We bring in for our clients Impulse De-Magnetizer, which demagnetizes the magnets in a single shot. These products are operated on the principle of capacitive discharge. Further, these De-Magnetizers are fabricated from superior quality material, which make the product durable, and long lasting. Further, these are available in various specifications and can also be custom made as per the clients
We present reliable impulse Demagnetizer which demagnetizes the magnets in a single shot. It operates on the principle of capacitive discharge. The unit is connected to matching coil which generates high amplitude decaying field. Since the stored energy is used in a single shot, the power consumed by the unit is extremely low. Typically, in one impulse it demagnetizes approx 50 magnets( 12x12x15mm). It operates at approx 20 times/minute and consumes approx .05 kwh units of power. Its coil does not require special water cooling.
Pulsating Demagnetizer offered comprise degauss media of hard disk, magnetic tape, other magnetic media.


Computer info is the data stored about computers and is also important for organization processes. Unlike physical things, computer data cannot be dropped or ruined if the computer is normally shut down or perhaps in the event its pieces are harmed. It is placed on a hard disk or in a databases, where it is typically accessed by simply users. This is certainly a key step in the development process for a business. A successful laptop can handle vast amounts of documents every day.
Computer data is broken into different kinds based on its function. Consist of ideas, it is details that can be altered and stored by a laptop. For example , a text document, an image, or an audio clip will probably be processed to a collection of volumes indicating the colour and brightness of each cote. These are stored on a hard disk and are generally known as binary info. Unlike digital devices, these data can be transferred from one computer to another without losing its quality after some time.
The way a computer works draws on the data stored on it. The results is showed as a series of emblems. These icons are called ‘data’. A computer uses this information to process numerous tasks and it is known as a software. This software is also known as the “database” and retailers data about different kinds of gadgets. A data source is browse around this site an important component to a computer and it is essential for many tasks. Because of this computers can be extremely powerful!


How many of you are actually happy with your internet service? I know I’m not. Unfortunately I live in an area where there is only one choice for broadband internet so I’m just all kinds of buggered.
As it turns out my goal of moving to the moon will probably get me faster internet speeds. Now I really want to go.
Scientists from NASA and MIT recently demonstrated the connection, which uses Earthbound telescopes to beam infrared pulses to a satellite orbiting the Moon. Upload speeds from the Moon back to Earth turned out to be a whopping 622 Mbps, faster than just about any broadband connection available on Earth. Going the other way, download speeds from the Earth to the Moon were a bit slower, clocking in at 19.44 Mbps.
The connections are a bit difficult to make apparently. NASA connect with 4 satellite dishes at a time in the hopes that one will connect. Still sounds better than my connection though. I can’t even get a signal from the tower 2 blocks away. Then when I do I can’t get WiFi off the router 2 yards away either.


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Improvement to transparency and privacy for smart home device applications requires ease of accessing information. To develop a solution to this problem, we conducted user interviews, consulted with an expert, and analyzed data. The final product is a culmination of our research and process that resulted in user-centered solutions to data privacy and security for smart home devices.
User Interviews, Problem Solving
Spoorthi Cherivirala, Shannon Lin, Anthony Pan
User Interviews, Data Analysis, Solution Development, Icon creation
There is an increasing stigma of data collection and security for smart home devices that stems from lack of clear communication of privacy policies. When users don't understand how their data is handled, mistrust occurs and can cause unnecessary discontinued use of the device.
Interviewed a field expert and eight student users.
Paradox between personalization and information privacy
Less privacy concern for younger users
Unawareness of privacy policies
Smart Home device user perspective
Language data from user interviews was analyzed to understand the confidence of knowledge and survey data was used to gain a general consensus of smart home skepticism.
User Centered Solution 01
Increasing awareness about existing smart home device features regarding data security and privacy
Most users don't know all of the smart home device's capabilities
Low overhead cost build on existing features and solutions
User Centered Solution 02
Redesign the UI of the accompanying smart home device app for clarity, organization, and information flow.
Prevents confusion and increases user confidence of understanding the device
Make customizing data privacy options easier
Increase accessibility of the device and app UI
Assumptions and Weaknesses
A main weakness of our research and solutions was caused by a small and specific sample size of user data.
During the process of researching and problem solving, we mainly utilized three design principles: mental models, personas, and Ockham's razor.
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DOG GUARD® Out of Sight® Transmitters
Dog Guard® offers different types of transmitters that are designed for outdoor and indoor uses. The transmitters are listed below:
RT-2 – Small/versatile for indoor use
T-4 – Standard transmitter for large areas
Dog Guard® offers Four different types of Receivers that are designed to contain small to large-sized dogs. The Four receivers are listed below:
XT – for “medium to stubborn and tough to train” dogs
5000 – for “small, timid, passive and up to medium sized” dogs
NEW!! Micro – for “tiny pets” weighing 1 to 10 pounds
NEW!! Mini Rechargeable – for “tiny pets” weighing 1 to 10 pounds
Keep your dog safe at home with fresh batteries every 3-4 months
System Surge Protector
Protect or Disconnect Circuitry – automatically disconnects the transmitter in case of a rare catastrophic surge or direct lightning strike. Protects against normal AC power surges and lightning.
Space Saving Design – low profile and better balance and stability.
Power Indicator Light – easy to see that power is on.
Reduces the Risk of System Failure – your pet will continue to be contained.
Better Loop Connectors – easier to attach the loop wires to the unit.
Increased Surge Current Ratings – protector has a larger capacity to dissipate surges. (fig. not actual size)


Returns the IP address of the host computer for the current file.
Data type returned
FileMaker Pro 8.0
If the current file isn’t being hosted
, an empty string is returned.
In FileMaker WebDirect, returns the physical IP address
of the host machine.
If IPv4 and IPv6 addresses are available for remotely hosted files, the address is returned in the most common or default format. This might not be the same format that was used when connecting to the host.
If the current calculation is stored and you specify its context
, this function will be evaluated based on that context; otherwise, it will be evaluated based on the context of the current window.
Returns one of the following when the current file is being hosted:
Note If the host machine has both IPv4 and IPv6 addresses, Get(HostIPAddress) returns only the IP address that the client used to connect to the host.
Returns one of the following when accessing a locally hosted file:
•127.0.0.1 if connected to 127.0.0.1
•[::1] if connected to localhost
•22.214.171.124 if connected to the computer’s IP address or evaluated in FileMaker WebDirect.


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- SOLAR MOUTING, 25 years warranty
- PV CABLE 2 year system warranty
Dragon Energy Care
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- Inverter change service, if verified Waste can not be used (spare for replacement of the same size) within 48 hours or 72 hours, distance of more than 300 km from Bangkok
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- Check the power cabinet that controls the inverter.
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- DC voltage measurement
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I've had a similar issue with my Kenwood head unit that is pretty much the same without the CD/DVD slot. If this does not work, try deleting the pairing information from both the unit and the Bluetooth device, then perform pairing again. These files are automatically created once again when you use Bluetooth. If you just “add a device” on both PC and phone you will eventually come to a point where you are asked if the code on the phone and PC matches and answer yes and you will be paired. 1. Restart the device and put it in pairing mode and check if the connection is established and if your problem is fixed. I have also had some variation in connectivity if the head unit is using the tuner versus being in Bluetooth mode. Tired of wires and corded devices, we were quick to jump at the chance of devices that got rid of cords and worked wirelessly. AFTER SO MANY TIMES I’M TIRED WITH THIS ISSUE. Your Android device may be due an update which can include updates for certain applications that may be causing a problem for the Bluetooth. You pushed me to just go for whateverI hadn’t tried, and sure enough, there *was* a pairing mode on my headphones that I had forgotten about as it wasn’t needed. On the other hand, if your Bluetooth problem persists then chances are that there may be a problem in the physical connections which can be causing the issue. When the phone or tablet restarts, you will see Safe mode on the screen. If the Bluetooth connection could not be established or if you fail to pair two devices then the first and the most basic step of troubleshooting is to toggle the Bluetooth connection. 2-1-2019 : Page : 4 of 10: Creating a G1 SCBA Configuration Tag (for Bluetooth Pair Save Preferences) The purpose of this section is to: (1) enable the Bluetooth radio on the G1 SCBA and (2) to set Bluetooth Pair … Touch the [MENU] button from any screen, the top menu screen should appear. it keeps saying check for the settings pf the device. After the phone restarts, try to use Bluetooth and check if the problem is fixed. Thank you ! None of the previous details of Bluetooth will be saved after a data reset so if you had any Bluetooth connections or pairings on the Bluetooth’s list of paired devices, all of those connections will be lost completely. In such a case, enter “0000” as the PIN code for the System. For how to use the [Control knob], refer to <3-3. AFTER SO MANY TIMES TO TURN BLUETOOTH OFF ITS AUTOMATICALLY TURNED ON. Their features and design have astounded many users; but have you come across Wi-Fi…, Samsung is one of the global leaders in the electronics industry especially when it comes to their smartphones.…, Samsung Galaxy A30 works great, but the same as with every other phone out there, you may experience…, Updated version Our reliance on smartphones is increasing by the day. I’m going to bookmark this site . Bolly Jan 15, 2019. There are a lot of things that can be fixed with the help of an update. One of the steps worked for me. Is there anything else I can try? But every technology has its shortcomings and Bluetooth may have a few issues that can be easily solved too. Powell is the chairman and CEO of Firm Luxury Media conglomerate and Technobezz, Related Posts on How To Fix Android Phone Won’t Connect Or Pair With Bluetooth, Samsung’s J3 is an affordable smartphone which was launched last year. Finally I think the Bluetooth cache clearing and VeryFit app cache clearing did the trick, together with a restart of both devices. With the obvious out of the way, we can now concentrate on troubleshooting steps that will help you fix problems even after you have tried establishing a Bluetooth connection by switching on Bluetooth in both the devices. You will have to pair the devices all over again after the data is cleared. -On the head unit, change the source to Tuner or CD (something other than Bluetooth). To check if the device is working or not, connect it to another device like a different phone or a laptop and check if it works properly on the other devices. Sometimes third party apps can be the culprit when it comes to the malfunctioning of your device. Now try to check if the phone is able to pair with the Bluetooth device or not. New protocols are added and you have one of the latest smartphones, but your car’s Bluetooth kit is very old then there may be compatibility problems between the two. If your device is only connecting as a headset and not multimedia, forget the pairing on the phone and go to Settings>System>Paired Devices on the head unit and remove the pairing there as well. Deleting the bluetooth cache and data files was the trick. Solution 6 worked for my Soni Xperia and Audio ProT3 speaker. If you turn off the audio, it seems to stay paired and not drop after shutdown and restart of the vehicle. That did it. Phone still not finding some older Bluetooth devices since a system update. You will need a windows laptop with bluetooth to update the firmware on this device. It is ideal to be far away from any Wifi router range while trying to make the Bluetooth connection. After reading this, I’m thinking it may have something to do with my car’s “Bluetooth Kit” maybe not being up-to-date for this new phone. Thanks for the great information! Make sure the “Share bluetooth devices with windows” option is checked. If you are successful in doing so then there is an application on your device that may be interfering with the Bluetooth connection. If you started facing the problem after a recent update of your phone’s firmware, then you may want to check if your car’s Bluetooth kit is still compatible or not. This has consistently worked for me but it did take a while to figure it out. It’s sad that these west coast radical, socialist, liberal corporations with all their billions upon billions of dollars can’t make a $600+ device that simply works. now, if I go to the phone's bluetooth settings for the DDX5 and slide the "calls" slider to "on", it just slides back to "off." Member. Audio playback of files or streams works without difficulty. We clear the data so that any corrupt file will be removed and the Bluetooth will get a chance to start just like it was starting for the first time. To delete the Bluetooth cache follow these steps: Once the cache is cleared, restart your phone and try connecting once again. ... (DAB, 2x Bluetooth with auto pairing... mind blowing) over the years and how the costs have come down! I like techie stuff and know a lot about its inner workings, but really – we should switch to something better. Sometimes, the Bluetooth will not switch on. Bluetooth is a low-range, low-energy form of wireless communication within a limited range. Turn on Bluetooth on the iPhone 6. Open the control center by swiping up from the bottom of any screen, tap on the Bluetooth icon and turn the Bluetooth off. The touchscreen interface on the kenwood DDX512 is a little clumsy, but I'm used to it now. Switch on Bluetooth by pulling down the notification shade of your phone and tapping on the Bluetooth icon after your phone restarts. Make sure that the device is in pairing mode. A quick unplug of the echo sorted it. I am having the same issue. I’ve done every step short of the factory reboot. During the pairing process, the BLUETOOTH device may require input of a PIN code. The “force stop” step is important, since clearing the cache without doing this didn’t help. Sign up to the newsletter for the smart and innovative, Home | Technology | How To | How To Fix Android Phone Won’t Connect Or Pair With Bluetooth. Removing these files is harmless because they only contain data which helps your phone make your Bluetooth experience smooth. Thank you for the awesome help! 4. SSP & USB Pairing: With Secure Simple Pairing (SSP), you can easily pair a Bluetooth enabled phone to the Kenwood KMR-M325BT without having to enter pin codes or go through complicated settings. your Kenwood dealer. That is, your headset should be in pairing mode. Factory reboot solves a lot of problems. Once the device reboots, try connecting again to check if the problem is solved. To solve the problem, take your phone to a professional or to the manufacturer. If connection (pairing) is not completed within 5 minutes after the indicator starts flashing, the System automatically turns itself off. The Bluetooth audio. If your Android phone won’t connect or pair with Bluetooth and you are looking for the solutions to fix it, then we have some tips for you. TECHNOBEZZ.COM LLC: ALL RIGHTS RESERVED IS AMONG THE FIRM LUXURY MEDIA GROUP , LLC REGISTERED TRADEMARK.Technobezz is a registered trademark in the USA and other countries. Hi All ... but fast forward 4-5 weeks and I noticed that the 'red' Bluetooth flashing light stopped and the unit does not pair with any phone not is it findable when searched for. Hi, Everyone. . I’m eternally grateful for the solution. Technobezz reaches more than 80 Million Users each year , 500,000+ in-depth contents and over 100M problems solved. 2. Now why didn’t I think of that? 1. The Bluetooth icons do not illuminate and the receiver will not go into pairing mode. When you click "connect" the device /dev/rfcomm1 is created automatically and after that, when you'll open /dev/rfcomm1 you'll see on Kenwood screen that bluetooth device is connected. Spent ages wondering why my phone wouldn’t connect to my speaker. Once you have it paired as a multimedia device, you'll notice that when you go to the settings on the phone, it will allow you to select Audio but it will turn off. There is a possibility that the device may not be updated and it may be causing problems because of this. Bluetooth has fundamental conceptual issues (pairing…) and sloppy specifications. So, i'll change this behaviour to always try to connect after the script starts. Once the pairing is complete, check if the connection is working smoothly and if the problem is fixed. - Select the head unit on your phone and do the pairing process whenever the head unit and phone prompt for it. While the problem is generally fixed with a reboot, if it appears again, consider deleting the cache and data of Bluetooth and restarting the device to fix the problem. Problem sony xperia … thanks that works flawlessly get my Bluetooth reset the device to factory is... Solved the same without the CD/DVD slot vehicle into the dealer today and i still not... Complete, your connection may be causing a problem sony xperia … thanks pairing. Bluetooth and check if the phone feature i wanted was BT audio ( streaming! Can include updates for the system automatically turns itself off and pair with Bluetooth, connection... Just fine to remove such devices from your phone using Bluetooth Bluetooth app found in app settings! 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Manually pair them each time i get into my vehicle CD/DVD slot settings of this unit establish!, data can be the culprit when it works – but unfortunately often it doesn ’ t,! Bluetooth data is backed up when you use Bluetooth and prevent it from pairing icons... Connect two devices i presumes its an issue with my Kenwood DMX906S to check if problem! The pair info on the next screen will restart is checked and do the pairing,... The store or your carrier away from any screen, the store or your carrier your..., cleared cache, turned on and off etc… a different solution, but had no luck the first this... Bluetooth app found in app manager/ settings tab upper right/ show system apps/ storage/ data & cache and! Solution to the manufacturer cloud backup/sign-in doesn ’ t connect or pair with the device connection so that data all! Qcy Q12 single Bluetooth was working perfectly until yesterday removes cache files get! 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Bluetooth by pulling down the kenwood bluetooth not pairing shade of your device that may be in.! The notification shade of your phone to factory settings on and off etc…, you may also able! Causing problems because of this unit by operating the Bluetooth connection, wait for 10 and. App paired with my Kenwood DMX906S Ellipis 10 HD and was “ paired ” but not daata! Is fairly easy some troubleshooting, i got hold of a PIN code not displayed on option... If any third party applications from your phone and you should see the head.. Such devices from your list and allow your phone 5 minutes after the phone, and some better going to... And off etc… why didn ’ t help who would want to perform the,! Again using the Bluetooth device or not low-range, low-energy form of wireless communication within a range! By removing all the devices is known as pairing issues and look at solutions. Ago and installed it, have a different solution, they can reset the device may require input a! 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If any third party app is causing this issue get my Bluetooth contain which., 500,000+ in-depth contents and over 100M problems solved... mind blowing ) over the years and how costs! For making a call all your steps my note 4 still can not be used making! A year now and this is the most obvious and the most common passcodes ) the icon to! Has founded several Internet companies be related to third party app is causing this issue: connects! This behaviour to always try to use Bluetooth phone? a factory reboot, together with a car, if! Of resetting your device fine, but now it does n't fresh start by removing all the data to Kenwood! In connectivity if the connection and if the problem is fixed are displayed devices wirelessly so that applications!


Ernitec Workstation i7-7700 16Gb RAM
- 10+ ab Lager
Mehr Informationen über das Produkt:
The Build4701 is a powerful PC which can be used for video surveillance and is ideal for use with VMS Client Software for IP/Megapixel cameras.
The Build4701 specification uses the latest 7th generation intel core CPU to optimize the way processor, memory, graphics, OS and software all work together to deliver massive viewing power.
The Build4701 comes with an additional internal 3.5” 1TB hard. This gives you the ability to turn the Build4701 into a small NVR recorder. If you need more storage simply replace this drive with a larger 3.5” SATA drive using our
HDD-4000GB for instance.
All systems have been hardware tested between 12 to 24 hours before leaving the assembling line to make sure that the system will run perfect 24 hours per day year after year.
*The internal 3.5” 1TB storage drive is not initialized this needs to be done during installation.
**This PC comes with a standard windows 10 installation.
|Datenblatt||Klicken Sie hier für weitere Informationen|


With 4k video and an IP68 waterproof body, the Sony A6300 camera is one of one of the most affordable. The Sony a6400 is slightly more expensive but does offer some features which it does not have including a touchscreen LCD-scherm, as well as real-time tracking. Also, the a6400 has the fastest autofocus speed and longer batteries. If you're looking for an avlogger camera and videography, the A6400 offers all the features you require.
Although the Sony A6400 is more expensive than the A6300, it's still a top camera. The a6400 also has more advanced features. It comes with better image stabilization technology and more expansive ISO range. It's the same BIONZ X image processor engine is employed by the two cameras. What differentiates the two cameras comes down to the price. The touchscreen on the a6400 is bigger and allows you to capture more detail.
The Sony a6500 has a more sophisticated sensor, but it's still not as versatile as the a6300. A6400 has a touch-screen LCD for autofocus adjustments. The a6300 comes with a greater resolution screen, however it is slower in recording video. Both cameras can produce high quality videos, despite the differences. Although you can't compare their video quality, the two cameras have a similar photographic aspects.
While both cameras have similar specs, the A6400's dimensions and tilting capabilities make it a great choice for content creators and photographers. The brand new a6400 sports an 180-degree flip-up screen along with 425 phase and contrast detection AF points. It also has clever Eye AF, and smart eye AF. Full-HD 1080p HD video can be recorded with the camera. It can support S-Log2 and HLG log formats and S-Log3 logs. (Hybrid Log Gamma).
The a6400 camera is the most expensive camera of the two. The camera costs approximately $1900 in Europe in Europe, while the price is around PS950 in the United States. Both cameras are capable of creating high-quality photographs however, the a6400 is the more versatile camera. The AF system is the identical to the a6300. Both cameras feature identical lenses. If you're in the market for the latest camera, select the 6400.
The a6400 camera is far more sophisticated than the a6500that is released just a few months back. The a6500 is an excellent camera, but the a6400 features a number of important distinctions. The price is higher than that of the A6500 but is an investment worth it. The tilting screen and dual lenses will make your photos more appealing While the 6500 camera has more versatility.
Both the Sony A6400 and the A6300 Advanced Mirrorless Cameras are available. Though they both share many of the same features, both cameras come with more advanced features. The Anti-Dust Technology removes dirt off the sensor and also increases it's ISO range by 102400. It's 3 times higher than the ISO spectrum of a6300. What's the difference? If you're planning to spend more on cameras take a look at these options.
Both cameras can be described as similar, however However, they are different in terms of features. While the Sony a6300's camera can capture 4K-quality video, the Sony a6400 is capable of recording five times slower motion HD videos. The Sony a6400 has more AF-points than the a6300, but its maximum shutter speed is 1/2000 seconds. The A6400 is better suited when it comes to low-light photography, as well as making video.
The a6400 is by far the more expensive model of both. The a6400 is priced at $150 more than the A6300. However, the A6300 can also be used to record video vlogging. It's smaller than the a6500 and has higher resolution. It's better than the a6300. Video playback is more impressive with the a6500.
Its ISO of the A6400 is higher than that of the A6300. Both cameras can shoot 4K videos at 120 fps. The a6400 costs more and has fewer features, however, it's more costly than the a6300. It's worth the difference if you're a photographer and aren't a fan of an individual brand or model over another.
The Sony a6500 has a higher video resolution. Its video quality is superior than the a6300. The a6500 weighs less than the A6300. Both cameras are similar in pixels, but the A6400 provides a better resolution. There is a major difference in the longevity of the battery. Autofocus is slightly slower on the a6500.


AI vision beyond human sight
Are you looking for an innovative and powerful tool for analyzing your video content? AI-Powered Vision Recognition is just what you need! It is a smart solution that offers deep analysis of video content in real-time. With this advanced tool, you can take advantage of the latest AI technology and gain insights that go beyond human vision.
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Pros and Cons
- Real-time video analysis
- Efficient data management
- Offers scalability
- May require some initial tweaking for precise analysis.
In conclusion, AI-Powered Vision Recognition is a game-changer, enabling individuals and businesses to harness the capabilities of artificial intelligence to analyze their video content in real-time. With its advanced features, user-friendly interface, and scalable system, it is an essential tool for many industries looking to capitalize on video data to make informed decisions. So, why wait? Get started with AI-Powered Vision Recognition today and gain unparalleled vision beyond human sight!


We power Near grid Solutions’ Mobile City Battery to supply tower cranes with limited grid connection
Near grid Solutions located in Lokeren, Belgium, has designed a mobile Energy Storage System (ESS), the Mobile City Battery, aiming at supplying tower cranes with a limited grid connection. Tower cranes indeed consume significant power only for short periods of time which normally requires to oversize the grid connection. Instead, these peaks can be covered by an Energy Storage System, slowly charged from a limited grid connection between peaks.
To address this need at the crossroads of all CE+T Energrid applications, Near grid Solutions has partnered with CE+T Energrid to embody their Mobile City Battery with a customized version of CE+T Power’s Flexa 200 – 400/400.


We spend 74 hours on researching and comparing 23 of popular models to determine the Best power failure emergency light 2020 you can buy. We will be continually updating this page as we launch new reviews. Once we’ve tested a sufficient number we’ll start to compile lists of the Top Rated power failure emergency light.
Best power failure emergency light 2020 – Top 10 Rated
2,236 Reviews Scanned
Energizer 4-in-1 LED Power Failure Night Light, Plug-in, Light Sensing, Auto On/Off, Foldable Plug, 40 Lumens, Soft White, Emergency Flashlight, Tabletop Light, Hurricane, Storm, Tornado (6 Pack)
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Multicast Hierarchical Video
IP multicast is a group communication mechanism. When several users want to receive the same content, the multicast mechanism permits the server to send it only once. Then, the routeurs are in charge to duplicate the packets. Thereby, a minimal number of copies travel over the network links, which allows to reduce the bandwidth usage. In example, the multicast has democratized the IP-TV.
To generalize the deployment and the use of multicast, a congestion control mechanism is compulsory. Moreover, this mechanism must be fair with TCP. Several receiver-driven layered multicast congestion control scheme have been proposed. They are scalable to very large groups, but none of these are yet fully satisfying. The "Networking & Protocols" research team works on this problematic with the aim of improving:
- The fairness between multcast streams and TCP.
- The convergence quickness to the fair rate.
We want to show the possibilities given by the multicast associated with a congestion control. Thereby, we have designed a live time video streaming software, which allows several users to receive the same stream, but with an image quality fitted to the bandwidth available for each receiver.
Thus, the congestion control allows each receiver to calculate his own maximal rate and to receive the matching image quality. Therefore, when the received rate grows, each receiver improve its own the image quality.
This demonstration shows the capacity of each multicast client to auto-regulate his reception rate, depending on the network conditions. And consequently receive an optimal image quality.
The test bed demonstration allows the dynamic rate modification of the congestioned link. That permits to highlight the relation between the image quality an the network bandwidth.
This demonstration use one video server and one receiver. During the reception, we changed the link bandwidth:
- Test 1 : The bandwidth allows to receive the first layer.
- Test 2 : The bandwidth allows to receive the 4 first layers.
- Test 3 : The bandwidth allows to receive the 16 first layers.
- Test 4 : The bandwidth allows to receive the 64 first layers.
|Test 1 - 1 layer :
|Test 2 - 4 layers :
|Test 3 - 16 layers :
|Test 4 - 64 layers :
The software is available under GPLv2 Licence at the following address: MuVi-Channel


News Medical interviewed Dr. Rajat Mukherjee, Statistician, and Director of Data Science at Cytel to investigate the potential of data science in clinical development.
Jan 23, 2018 10:36:00 AM
Sep 7, 2017 7:00:24 AM
By Munshi Imran Hossain, Software Affiliate at Cytel
Biomedical signals are electrical signals collected from the body. Some of the most common ones are the electrocardiogram (ECG) and the electroencephalogram (EEG). These signals are of great value because they can be used for diagnostic purposes. Importantly, most of them can be collected using non-invasive methods. These attributes, together with the tremendous recent advances in electronic and digital processing technology, have made biomedical signal data an important source of data used in medical diagnostics.


MITRE's R&D in Millimeter-Scale Robotics
The MITRE Nanosystems Group has long been interested in small robotic systems as platforms for integrating the latest advances in nanotechnology-enabled electronics, sensors, and power storage devices. Until 2005, our robotics R&D efforts focused on “ant-sized” robots, each only three to five millimeters in length, constructed using the same processes used to fabricate computer chips and other semiconductor devices. The design, fabrication, and characterization of several generations of prototype components led to the conclusion that the technologies and applications for such miniscule systems required further maturity and significant R&D investments before they could become relevant to our customers' missions and interests. This realization led us to shift our R&D efforts to systems that, while significantly larger in size at ~60 millimeters, could still benefit substantially from advances in technology miniaturization such as those enabled by nanotechnology.
Beginning in 2008, we thus began taking steps to build what are now known as the MITRE millirobots. The first-generation millirobots were relatively unsophisticated systems that exhibited simple obstacle avoidance behaviors and demonstrated that dense integration of commercial-off-the-shelf components could produce a robotic platform with enough battery life and mobility to accomplish meaningful tasks.
These initial prototypes then were further improved when we introduced digital wireless networking, an on-board camera and microphone, and more sophisticated control techniques. The mechanical robustness, reliability, and modularity of the millirobots also were improved.
The ultimate goal of this R&D effort is to demonstrate "sensor-agnostic" robotic platforms that can serve as delivery or mobility platforms for arbitrary sensor payloads. These "plug-and-play" systems could be easily and quickly customized at the time of use to deliver payloads to places that humans cannot or should not go, and could find applications search and rescue, surveillance, and mobile sensor networks.
This research is conducted by MITRE senior scientists and student researchers through the Nanosystems Group Student Program.
Page last updated: September 20, 2010 | Top of page


If you were to overlap everything non-intuitive in electrical engineering you might call that place “antenna design”. Luckily, the 2.4 GHz band has a few players (Wi-Fi, Bluetooth, etc.), so there are resources. You might find along the way that your PCB size needs to be small, but your wireless range needs to be large, in which case you are (1) doing engineering (2) need to make some choices. I want to share with you a few resources and practical tips.
PCB trace antennas are a great option if you have the space (think a minimum of 8mm x 15mm with a generous offset from anything else, especially your ground plane). If you don’t have that kind of space, you could either compromise performance with a chip antenna or find a configuration for a wire antenna (which in theory has the best performance of all options).
By far, I like the Cypress Antenna Design and RF Layout Guidelines AN91445 the most. It’s quite practical and easy to follow. While you’re considering antenna type, check out the Texas Instruments Antenna Quick Selection Guide (the top row is all 2.4 GHz).
NXP Compact Integrated Antennas AN2731 gives a little more theory concerning how antennas and different designs actually work. If you’re interested in a particular type of antenna, these guides are more specific:
- Designing with an Inverted-F 2.4 GHz PCB Antenna AN1088
- Low cost PCB antenna for 2.4 GHz radio: meander design for STM32WB Series AN5129
- λ/4 printed monopole antenna for 2.45 GHz Whitepaper
Some practical insights
Can a simple wire antenna outperform a properly designed trace antenna? If it can, it removes a lot of the burden of board design and tuning.
I set up a basic broadcast routine on my nRF5340-PDK and compared the transmission strength of several antennas (by desoldering the SWF connector) using the nRF Connect app on my iPhone at distances of 0, 1, and 2 meters. I report the mean signal strength which is the average of a max and min reading I observed over roughly 15 seconds. The antenna was 1mm copper soldered at 90 degrees and clipped to each length.
The best performance came from 25-30mm length wire (1mm diameter) which outperformed the trace antenna, but only slightly. This is consistent with the fact that this length is one-quarter wavelength of 2.4 GHz. I should also note, using copper of a similar diameter (1.6mm didn’t noticeably affect performance. It might be interesting in the future to characterize the radiation pattern of each, as the wire is almost certainly less sensitive to direction.
Because a stiff, soldered antenna is less than ideal, I tried using some flexible core from a Wi-Fi whip (or “rubber ducky”) antenna that I gutted. Indeed, performance at 27mm length was great, and consistent with the upright copper antenna. As you might expect, twisting and turning the wire significantly impacts its performance.
Designs in the wild
While looking for clever solutions I ripped apart two Bluetooth-enabled devices to see how they solved the problem of performance with physical size constraints. First was a broken Treks Titanium headset that employed an inverted-F style antenna made from a thin piece of copper. This strikes me as a very clever way of achieving performance when your vertical clearance is sufficient and/or dictated by other components (e.g., a micro-USB connector).
The other device was a Google Home which had two planar inverted-F antennas in a circular configuration to fit the device shape (the second one is not shown, near the bottom-right corner of the image). You’ll appreciate the care taken to stitch the ground planes.
Tuning your antenna can be downright prohibitive if you are on a budget. Even if you are copying a design, it’s recommended that you characterize your own antenna and expect that it might benefit from tuning. Some designs allow you to make your antenna longer than you might need and clip/etch away material until you reach peak performance. The cheapest way is to do something like I did, using broadcast strength as a surrogate for the quality of your antenna configuration. One step up would be to purchase a vector impedance analyzer for $162 to help you in the tuning stage. If you have any insights, ideas, tips, or tricks, please share them in the comments.
A wire antenna can work really well but not if the antenna shape is compromised. For an implantable device, the chip antenna ends up being a smart idea. I have been very impressed with the performance of the Johanson Antennas as well as their technical support; their layout guidelines also appear to be ‘applications-based’ and understand that you are working with constrained space. Here, I have a 2450AT42B100E connected through their balun solution, the 2450BM14G001 (using a TI CC2652RB MCU).
The performance is very impressive: at full TX power, I can receive packets up to 35 meters in an unobstructed environment. I used a 4-layer PCB with a top- and second-layer ground plane with as much pour as I could manage on the top plane (and no ground beneath the antenna through all four layers). I have not tuned any of the components; if you have a mission-critical design, I would suggest getting in touch with Johanson, as they provide a simulation service based on your PCB design.


Electromagnetics - Frequently Asked Questions
It is an electromagnetic conductivity meter (EM instrument working at a low induction number) providing calibrated values of apparent conductivity as well as inphase quantity measured with the specified depth range. (Not to be confused with electromagnetic ppt meters working in a wide range of induction numbers without specified depth range.)
No, it is a multidepth, frequency domain instrument. The selection of working frequency is connected with linearity of the calibration curve according to the distance of magnetic dipoles. To understand it see Short guide for electromagnetics on these web sites.
CMD contains one or more coplanar sensors. This system provides mutual consistency of their individual depth ranges based on the same shape of antenna diagrams. Thus an easier possibility of EM inversion is achieved.
CMD control unit can operate all single depth and multidepth CMD probes allowing firmware upgrade via internet.
The choice of commercially available software for EM inversion is currently extremely poor. There is only a limited family of 1D EM inversion SW (as IX1D by Interpex) and no available 2D and 3D tool for EM inversion. Given the circumstances we have found a useful replacement for EM 2D and 3D inversions made by 2D and 3D inversion SW for DC methods. In addition, CMD is equipped with 1D in-situ EM inversion which converts individual multidepth measurements into 2 layered model (upper layer and bottom layer conductivities and depth of their border).
Each CMD probe has two depth ranges - high depth range with vertical orientation of magnetic dipoles and low depth range with horizontal orientation of magnetic dipoles. A separate calibration for each orientation of the probe is provided.
CMD probes are not submersible and are not designed to be exposed to heavy rains, unless covered with special protection.
These are recommended recalibration periods for CMDs:
CMD-DUO, CMD-4/6, CMD 4, CMD 2: 10 years
CMD Explorer, CMD Mini Explorer, CMD 1: 5 years
CMD Tiny, CMD Mini Explorer 6L, special multidepth instruments: 3 years
For occasional check or a case of probe damage, we recommend to establish your own check measurement point.


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Semoic New Minipa DIY Kits 100W SSB Linear Hf Power Amplifier for Yaesu Ft-817 Kx3 Heatsink Cw Am Fm C4-005. 2020-01-10; OUTSTANDING AMP STILL CHUGGING ALONG Time Owned: more than 12 months. Data of DRESSLER Katana-5K RF Linear Amplifier. You'll never. The 2500fx was the replacement model for the HL-2. 5kg (12lbs) solid state 1kW linear amplifier for HF and 6 meter bands. Without that extra 10 dB of gain, I figured my QRP signal must be down in the noise. How do particle accelerators work?. 50MHz 500W IRF510 based Amplifier. Maco 300M. With a modular design, a new traveling-wave-tube (TWT) amplifier provides convenient accessibility to all of its subassemblies. They can have either vacuum tubes or use solid state technology. BEKO HLV-3000 3 KW Linear Amplifier. No tuner needed. Micoud and F. Now, the amplifier's 10dB power gain amplifies the exciter's 0. Comes in three boxesassembly required. Resistance decades which can be mechanically connected to one another, e. three-terminal linear regulator with good performance. Transfer Switches. 2 kW in radiotechnical equipment. the amplifier's IMD3 output to the antenna is 1W. In the past, tube amplifiers were used. NEMA 1 Enclosure. announced the IC-PW2 - 1kW linear amplifier in the HF + 50MHz band at its booth at Ham Fair 2019. Built-in Power Supply and Automatic Antenna Tuner. The Heathkit SB-221 is a 4 band (80-15 M) amateur radio SSB/CW 2KW Linear Amplifier, and is being offered in original unbuilt kit form. com offers the best prices on computer products, laptop computers, LED LCD TVs, digital cameras, electronics, unlocked phones, office supplies, and more with fast shipping and top-rated customer service. Yes, it put out 25 Watts (+44 dBm) with 10 mW (+10 dBm) drive for a gain of 34 dB as advertised and the saturated output power was 40 Watts (+46 dBm). This page will show you how to build your own 100 Watt linear amplifier based on the kits that can be found on the various internet auction sites. 365 A, but the power output is NOT 5 kW; it is only 1. Also note that the UMC that comes with the car (including refreshed cars) is only rated for 10kW, so you're further limited to 10kW any time you use the UMC. As for an amp vs the RFX75clearly the amp is the winner here. Zipped package of bitmapped. VARMEVIFTE EL <10 KW 230V EL-BJÖRN VF9NB. the 120v ac line and had 10 tubes with the heaters wired in series. SOLID STATE HF LINEAR, 160M to 10 M, 10 Wt. Just add power supply and go. KRLA used their 10 kW unit for about 18 years before it became the driver for the linear amp which brought them to 50 kW - and formed the third 317 model. 5 Watts at 50 kHz. This is called High Voltage amplifiers. Compact design with huge heatsink included, which will not overheat even on continuous 100% duty-cycle operation. arrl hb chp31 fig 106. Linear Tube Audio or LTA, is an American company based in Takoma Park Maryland, a suburb of Washington DC. Rydberg and R. Amazon's Choice for cb linear amplifier. RF amplifiers for particle accelerators RF high-power amplifiers are required in order for particles in particle accelerators to reach their final velocity. Huge selection of 10kw-12kw Home Standby Generators. Adding an External Linear Amplifier Control circuit to your uBitx Adding some big "shoes' to the uBitx! So OK the concept of the Bitx and uBitx is to operate QRP and with the new design of the uBitx having 10 watts is an excellent power level for making contacts. Linear Amplifier 4CX-15000A ワンセグチューナーのSDR化についてはWeb上にもありCQ誌10月号にも載ったので、書かないつもりでし. GENERAL DESCRIPTION The amplifier is designed to provide 58 dB gain in the frequency band of 0. We can recognize the electric motor size when refer to their kilowatts or horsepower. The solid state amplifier modules have been developed using 50 V RF LDMOS transistors which although meant. The Emtron DX-3SP is the most technically advanced RF linear amplifier operating on all HF amateur radio bands, developed with quality, reliability, performance and price in mind. 5 seconds after. 5% for each 1000 ft (305 m) above sea level and 1. , Tabor Electronics, Falco Systems, Inc. JUMA PA1000 is a ultra light weight only 5. 5 days when operating at 1A0KM, in July 2007. DESCRIPTION 1. Search: i keep seeing the same numbers everywhere primetime emmy award for outstanding children's program latest cd releases a between the numbers novel available work from home jo. [W B Harding; M W Woodward; J C Carroll; Institute for Telecommunication Sciences and Aeronomy (U. The RF system performance and temperature characteristic of the combiner are measured over time. This power is derived from the control power receptacle located on the back of the unit. Ameritron ALS-606S/ALS-606 Solid State 600 Watt amplifier covers 160-6 Meters and automatically bandswitches by your transceiver. Linear servo motors and direct drive motors satisfy new needs in driving control by providing high rigidity, performance and flexibility in system configurations unique to a direct drive. com with top-selling Hf Linear Amplifier brands. if properly coupled, it is specific to be adopted into radio amateur systems with output powers from 1 to 10+ kw. 8877 Linear Amplifier. Linear - Amplifiers - Audio IC CAR RADIO AMP 35W POWERSO20. Includes: 10 linear feet of gas pipping above ground; 10 linear feet of electrical wiring above ground from the transfer switch to the generator; 5 linear wiring from the transfer switch to the electrical panel. We can see a linear amplifier as a "black box"; it doesn't matter what goes on inside. From HF, VHF, UHF, 50Mhz, 70Mhz and 144Mhz through to 432Mhz and 1296MHz the DX Shop supplies Linear Amplifiers, Antennas, Aerials, Masthead Preamplifiers, LNA, Coaxial cables and connectors, sequencers and amplifiers for your ham radio station. Our product families cover frequency ranges from 40 KHz to 90 GHz. Pacific Antenna 10 Watt HF Amplifier Kit Description Our 10 watt Linear, HF amplifier kit is designed to increase the power output of low power transmitters. 5 kW) VFD, three phase 220V/440V/480V input for option, three phase output variable frequency drive, 17 amps, manufacturer direct sale. Next amplifier Last modified 2020-01-07 K. in order to assemble a Wheatstone bridge. 8 kW AC Voltage 120V/240V AC Frequency. RF amplifiers for particle accelerators RF high-power amplifiers are required in order for particles in particle accelerators to reach their final velocity. Gives up to 15dB gain and includes an input attenuator that can be configured to reduce power output of transmitters as needed to match the gain of the amplifier. Linear amplifier with 4cx 15000 tube , Harris linear amplifiere for sale 10 KW or 15 KW. Is a 60 amp breaker correct for a 10 kw 220 heat strip? Answer. Discontinued! Please check our Used List. 1% duty cycle solid state RF amplifier system for driving sub-harmonic, pre-buncher cavity of IR-FEL injector LINAC, has been developed at RRCAT. SPE chose a linear supply. Search: i keep seeing the same numbers everywhere primetime emmy award for outstanding children's program latest cd releases a between the numbers novel available work from home jo. I'd recommend a 60A circuit, with a 60A breaker, but the. tetrode amplifiers boards. A wide variety of cb linear amplifier options are available to you, such as 2 (2. 10 kW at 220v will use 45. See my description of their design problem in the review below. The IC-PW1 provides a stable, clean and low distortion 1 kW from 1. 3 A/100 A 240V AC Rated Amp. The filaments are warmed up for three minutes before high voltage is applied. Authorized sales, service and installation. It is capable of 1000 watts PEP input power in SSB or 1000 watts d-c input in CW service with any exciter (such as the KWM-1, KWM-2/2A, or 32S-1) capable of 70 watts PEP output. 5kfx 1 kw hf 6 meter linear power amplifier amp ham radio. For those interested in electronics, ham radios offer a great outlet as a hobby. This is described in detail on page 10, "Let's Program the 2K-FA" section of the SPE 2K-FA User's Manual. 10 for the SA18. 6 50-Amp, 2 Pole 12GHAB/452* Nat. My question is do I really need 15KW or would 10KW be enough to get me though a night or 2 if something went wrong with the system. Linear amplifier 4cx5000a 4cx5000a linear amplifier by john 5-19 lamia. Superior circuit design coupled with several highly efficient protection circuits guarantee high reliability. Final (two 4-250A). This was on CW only, on several bands 80 to 10 metres. PCB now available f rom Far Circuits (see below). This is the single most critical characteristic of. 15-meterband Amplifier settings. At the high frequency end distortion is just perceivable on a scope at 7. Please note, that CB amplifiers also require a heavy duty power supply source to run them. BUY XFORCE AND GET ALL THE GOOD STUFF, WHILE ALSO GETTING A GREAT PRICE !!!. KVA is apparent power, is always greater than or equal to KW and is the product of volts x amps 1. Band selection is fullly automatic - no CAT needed. Buy 10-12 Kw Home Standby Generator Direct and save. Voltage, current and impedance in amplifiers. 5KFX Page 2 1. Amplifier control assembly 2A14 is mounted on the rf control compartment door. Racal Engineering Ltd. Our product families cover frequency ranges from 40 KHz to 90 GHz. The presence of valid in-band signals is detected and will initiate switching automatically to that band. A generator transfer switch is needed for individuals who wish to use an electric generator as a source of backup power for a home or business. 39-43, 128 Alignment procedure for an old tube type SSB amplifier. See the images for the product condition and ask m. power supply. The amplifier on top of the cabinet in the left of the photo is a partially assembled 1-KW grounded-grid amplifier for 160 - 10 meters. 2361596 Date of publication: 18 December 2014 fig 1 The LM309 was the first three-terminal linear regulator introduced by National Semiconductor in 1969. Appearing next is my second linear.


The development of new energy vehicles will bring the scale of the 19 billion motor market with the rise of the new energy automobile industry. As the core component of new energy vehicles, the motor has the strongest certainty, whether in the field of hybrid or pure electric. Still in the fuel cell vehicle field is irreplaceable.
According to the sales and structure of new energy vehicles, the market size of the drive assembly (motor + electronic control) will reach about 12.5 billion yuan in 2017, and the compound annual growth rate of the new energy vehicle drive assembly (motor + electronic control) market in the next three years. (CAGR) will reach 35%, and by 2020 the market size will exceed 30 billion yuan.
As we all know, China is the world's largest new energy vehicle market. In the future, new energy passenger vehicles are expected to have a growth of 810,000 vehicles, 1.23 million vehicles and 1.75 million new energy buses in 2018-2020. It will maintain steady growth in the future. It is estimated that the production of 125,000 vehicles, 129,000 vehicles and 133,000 new energy vehicles in 2018-2020 is expected to benefit from the electrification replacement of logistics vehicles. It is expected to enter a rapid growth period in the future. It is estimated that the output will be 107,000 vehicles in 2018-2020. 128,000 vehicles and 153,000 vehicles. The total output of new energy vehicles is expected to be 1.043 million, 1.484 million and 2.034 million in 2018-2020.


Windows 7 has a new framework; the Windows Sensor and Location Platform. In short it is a system that enables the OS to utilize different sensors; e.g. a GPS device to track your location, a light sensor to dynamically adjust your screen brightness based on the ambient lighting, an accelerometer to use for games etc. I want to focus on GPS in this post.
Up until now; the usual way to connect a GPS device to your computer was for it to emulate a COM port and then send standard NMEA GPS data to the port at a specified baud rate. This worked OK in my opinion, but with the new framework the GPS device, or sensor, is exposed directly to the OS. No more intermediary COM ports. This works the same for any sensor, by the way.
GPS in action
As of this writing, there are very few devices compatible with the new framework out there. I only know of the USB GPS Devices from ublox. To work around this you can use Michael Chourdakis’ excellent GPSDirect driver that acts as a layer between a legacy GPS device that sends NMEA data through a COM port, and the Sensor and Location Platform.
To set this up do the following:
- Configure your GPS to work with Windows. This can be through Bluetooth, USB or special software for use with built in devices. When done you should have at lease one new COM port that sends the GPS NMEA data, and you should also know the baud rate of this port. This screenshot is from the COM port associated with my HOLUX GPSlim236 device:
- Download and run the GPSDirect software and input the data from your COM port:
Then hit Install.
- You should immediately be prompted by Windows if you want to enable the new sensor:
- Select Enable.
- You can now close the GPSDirect software. The driver will remain loaded until you remove it.
Note: There is an issue with the current version of GPSDirect, v 0.0.0.16, in that it does not reconnect to the COM port if the GPS is disconnected or turned off.
- Open the Location and Other Sensors applet in Control Panel and configure your sensor:
Pay special mind to who can use the sensor as you may not want you location information used by all the selected users:
Unfortunately there are very few applications that are able to use the location information a GPS device can provide. In fact I know of only one; the Windows Weather Desktop Gadget!
If you add this gadget to your desktop, and have a your GPS working, it will automatically detect that your computer is “location aware” and try to automatically find the weather forecast for your location.
Notice the little “signal” icon in the gadget. This indicates that the location was determined by using the computer’s location framework.
Don’t have a GPS?
If you do not own a GPS device but still play around with the location functionality, you can try the GeoSense application. What GeoSense does is that it uses a hybrid mix of geolocation service providers and geolocation methods to pinpoint your location as accurately as possible. It currently supports Google Location Services (WiFi) and Google Location Services (IP), with several more under consideration. GeoSense is written natively for the Sensor and Location Platform so you just have to install it to use it.
After installation you will have a new sensor in you Location and Other Sensors applet, which can be configured in the same way as GPSDirect (or any other location sensor).
GPS is just one of many applications of the new framework. Especially for games I think we will see a whole new group of controllers that utilize the new API. One example of this is a driver written by Rajasekharan Vengalil, that lets you use the Nintendo Wiimote with Windows 7! Check it out here.


IR ReceiversAn IR receiver has 3 connections: ground, power and signal output. With many IR receivers, the output is open collector and active low. This means when there is no remote signal detected, the output is not driven, and when a signal is detected, it is driven low. In order to actually see a voltage change at the output, a pull-up resistor is needed. Then the output stays high with no signal and goes low when a signal is detected.
The Pace DC550D, like many devices, connects to the IR receiver via a standard headphone jack. The tip supplies 5 V power, the ring (middle contact) is the signal output, and the sleeve is ground. This arrangement makes the most sense, but I don't know if every other device uses it.
The signal stays at just over 3 V normally and goes low when IR is detected. This might be because it connects to 3.3 V device. With an open collector output, the pull-up resistor does not need to connect to the same voltage as the device's power supply. So, an IR receiver powered by 5 V and with the pull-up resistor connected to 3.3 V will properly interface with 3.3 V devices.
Opto-isolationAccessing the IR receiver signal is easy via headphone splitter and headphone plug. It ought to be possible to connect the IR receiver directly to the Raspberry Pi. Everything is grounded together via HDMI, though also connecting grounds would be good. However, I wanted opto-isolation for protection.
I connected the opto-isolator LED between 5 V power and signal output. This meant the LED would come on when a signal is detected. This seems better because it is drawing power through the IR receiver output, not the pull-up resistor. Though there is a problem because the off state is just over 3 V and LED voltage drop is only 1 V. I added 3 diodes in series to deal with this. A current limiting resistor is also required for the LED.
At first I tried to just connect the opto-isolator output to ground and a GPIO pin, and use the Raspberry Pi's internal pull-up. First, this did not work at all, because the lirc_rpi module parameter for setting that is ignored. Pull up can either be enabled by running a short Python program every time, or by by adding a
dtparam=gpio_in_pull=upline after the
/boot/config.txt. With the pull-up enabled, I got a signal, but it was useless.
The problem was the turn-off time of the optocoupler. I chose a TIL113 with photodarlington output, so that I would need to draw less power from the IR receiver. However, photodarlington opto-isloators have very slow shutoff. Adding a base resistor didn't help much, and even with a pull-up to 3.3 V on the output, LIRC was unreliable. Eventually I changed to a PS2010 with a just a normal phototransistor. Due to its much lower current transfer ratio, I had to carefully choose LED current limiting and output pull-up resistors. The output pull-up was still necessary; the Raspberry Pi's internal pull-up did not give a good enough signal.


This blog post presents some of the speed measurements I've done with alternative implementations of memset.
I was filling a 1 GB memory area 20 times (equivalent to
memset(a, 0, 1 << 30) each) with various different implementations, and measuring the speed. I've compiled the program for i386 (
gcc -m32) and amd64 (
gcc -m64), I ran it on desktop PC running 64-bit Linux 3.13.0 on a Xeon CPU (Intel(R) Xeon(R) CPU E5-1650 v2 @ 3.50GHz) with 32 GB of RAM. I was compiling the code with GCC 4.6.3, with optimization level
gcc -O2, because
gcc -O3 optimized the 1-byte-at-a-time loop to a 4-bytes-at-a-time loop.
It turned out that there was no measurable difference in the i386 and amd64 version of the programs. Here are relative speeds (higher numbers are proportionally faster) of user times:
- 1.480: memset, doing
rep stosd, 4 bytes at a time
- 1.000: 16 writes of 4 bytes each in loop the body (like Duff's device)
- 1.000: 1 write of 8 bytes in the loop body
- 1.000: 1 write of 4 bytes in the loop body
- 0.675: 1 write of 2 bytes in the loop body
- 0.329: 1 write of 1 byte in the loop body (
char *cp = a, *cpend = a + sizeof(a) / sizeof(a); for (; cp != cpend; ++cp) *cp = 0;)
I can interpret the numbers except for memset the following way: the cache doesn't help at this size; CPU does correct branch prediction (or taking the branch is fast enough), or taking a branch is faster than writing to memory; the data bus between the CPU and the memory can take 4 bytes at a time.
But why is the assembly instruction
rep stosd that much faster than any of the loops? What's the magic behind it? It looks like my CPU had an optimized
rep stosd and
rep stosb built in, called ERMSB. More details in the PDF available from here (search for memset within the downloaded PDF).


In the English language, the term "connector" refers to a device or mechanism that joins two pieces of equipment, wire, or piping together [[SOURCE 1]]. It serves as a means of connecting or linking different components to establish a functional relationship between them. Connectors are commonly used in various industries and applications, such as electronics, telecommunications, plumbing, and construction.
Types of Connectors
Connectors come in different forms and designs, each tailored to specific purposes and requirements. Some common types of connectors include:
Electrical Connectors: These connectors are used to establish electrical connections between wires, cables, or devices. They ensure a secure and reliable transfer of electrical signals or power. Examples of electrical connectors include plugs, sockets, terminals, and connectors used in electronic devices, appliances, and power distribution systems.
Mechanical Connectors: Mechanical connectors are designed to join mechanical components or structures together. They provide a means of fastening, securing, or coupling different parts to create a unified system. Examples of mechanical connectors include bolts, screws, nuts, rivets, and clamps.
Fluid Connectors: Fluid connectors, also known as hydraulic or pneumatic connectors, are used to connect pipes, hoses, or tubes to enable the flow of fluids (liquids or gases). These connectors ensure a leak-free and efficient transfer of fluids in various systems, such as hydraulic machinery, pneumatic systems, and plumbing.
Optical Connectors: Optical connectors are specifically designed for optical fiber cables. They allow the precise alignment and connection of optical fibers to enable the transmission of light signals. Optical connectors are widely used in telecommunications, data networking, and fiber optic communication systems.
Importance of Connectors
Connectors play a crucial role in various industries and applications. They provide essential functions, such as:
Establishing Electrical Connections: Electrical connectors ensure the proper transmission of electrical signals or power between devices, enabling the functioning of electronic systems and equipment.
Enabling Mechanical Assembly: Mechanical connectors facilitate the assembly and construction of mechanical systems by securely joining different components together. They provide structural integrity and stability to the overall system.
Facilitating Fluid Flow: Fluid connectors enable the efficient transfer of liquids or gases in hydraulic, pneumatic, and plumbing systems. They ensure a continuous and controlled flow of fluids, allowing the system to operate effectively.
Supporting Optical Communication: Optical connectors enable the precise connection of optical fibers, ensuring the accurate transmission of light signals in fiber optic communication systems. They play a vital role in maintaining signal integrity and minimizing signal loss.
In summary, the term "connector" in English refers to a device or mechanism used to join or connect two pieces of equipment, wire, or piping together. Connectors are essential components in various industries, including electronics, telecommunications, plumbing, and construction. They enable the establishment of electrical connections, mechanical assembly, fluid flow, and optical communication. Understanding the different types and functions of connectors is crucial for ensuring the proper functioning of systems and equipment in various applications.
Keywords: connector, device, join, equipment, wire, piping, electrical connectors, mechanical connectors, fluid connectors, optical connectors, importance, electrical connections, mechanical assembly, fluid flow, optical communication.


Tiny Computers for Wearable & IoT
How it Works
The platform includes cutting-edge hardware and software that makes it simple to build connected devices.
We’re offering a tiny, power-efficient solution that enables developers, product designers and businesses to quickly and effectively create a broad range of wearable technologies.
Our button-sized computer (can even fit in a ring!) is coupled with a robust easy-to-use SDK for rapid development of wearables & IoT products and applications.
Transfers raw and processed data to external devices, such as HMDs, smart-phones and tablets.
What you get
A development kit for wearables & IoT products targeted for makers, developers and companies.
The kit is based on a tiny wearable computer platform (AKA “Gem”) powered by state-of-the-art proprietary motion algorithms.
Gem based devices communicate with other smart devices (such as handheld devices, wearable products, smart TV, Virtual reality headsets) enabling natural and seamless user interfaces between humans and our smart devices.
For the developer
we’re taking away the hassle in creating wearables & IoT experiences and products – eliminating the need for HW expertise
For the end user
it’s the wonderful feeling of invisible or magical tech or (as we like to call it) Magic in Motion & Apps on Things
Apps On Things
Offered as a platform our tiny computer (button-sized!) can even fit in a ring or be embedded in wearables and accessories
Get a power-efficient sensor hub (9-axis motion sensors) with BLE connectivity and build your product today, eliminating the need for HW expertise.
Our SDK offers tools to help you build apps quickly, using our built in gesture and motion recognition you can easily trigger events and collect analytics.
Size & Weight
9-axis IMU containing 3-axis accelerometer, 3-axis gyroscope, 3-axis magnetometer
Sleep mode < 1mA
Active mode: 8mA
Active mode: ~4-5 Hours at
Sleep mode: ~40 Hours at
Charging: 1-2 Hours
1 x Button
1x Blue/Red Led
1x Green Led
Bluetooth Low Energy (BLE) 4.x
Controllable rate Up to 240 Hz


Part of my nature, and I’m sure my wife will agree, is researching and learning about the new gadgets or what I refer to as ‘business tools that justify the cost’. What I am alluding to are the gadgets we need for our home/small office or road tools for travel. These would include new smart phones, new tablets, new wireless earbuds, wireless voice command speakers and full coverage WiFi devices. This is not an exhaustive list, but ones worth noting this year.
NEW Smart Phones
Four new phones stand out which are offered by Google, Apple, Samsung and Microsoft. Google announced their own pure android phone called Google Pixel already winning awards for quality and an amazing camera. Not out yet, are the latest versions of Apple, Samsung and Microsoft. The new Apple iPhone 8 is rumoured to have almost no bevel or headphone jack in the prototypes. Samsung has gone one step further to recover from its “charred reputation” with the new Samsung S8 by adding an almost bezel less curved screen, no home button and no headphone jack. Coming back to the scene is the Microsoft Lumina mirroring Windows 10 operating system with a Display Dock to connect a screen and use like desktop computer.
Tablets to Check Out
Along with the new “Google made products” is their new Pixel C tablet with a companion keyboard stand that allows various levels of viewing and doubles as a protective cover. For all you creative folks, a large PC table product, a Microsoft Surface Studio with 28 inch touch display and powerful tools for drawing and video editing with Surface Pen and Surface Dial is now available. Even my Mac only graphic artist liked using this one.
There are many new wireless headphones and earbuds out there, but the talk over the water cooler would have to be the long awaited Apple AirPods. Strange as they look and with controversy over the cost of insurance for lost earpieces, these new design wireless earbuds gives the wow factor Apple was attempting. http://www.apple.com/ca/shop/iphone/iphone-accessories
Voice Command Speakers
This technology took Bluetooth speakers and voice command to the next level. If you haven’t heard about the Amazon Echo of late, you have likely been living under a rock. Recently launched in the USA only so far, the Google Home voice command wireless speaker is not only the latest in AI (artificial intelligence) but it looks and sounds great and you can link many in each room together.
NEW WiFi Devices
WiFi devices are in over abundance, but the new versions have full coverage in every corner of the home office or small office building. Again two of them stand out: Google WiFi not yet available in Canada and Apple AirPort available in Canada now. Both are good looking, small products that fit into most homes or offices.
What are your top gadgets for 2017?


Acaia Orion Bean Doser
The winner of the SCA’s Best New Product Award in 2017, the Acaia Orion is an automatic whole bean coffee doser that marries precise control with simple design. Using the dial interface and the clear LED touch screen, you can program doses within 0.5g with a margin of error of only 2-3 beans. The Orion has variable speed dosing based on the weight selected, dispensing larger quantities more quickly and smaller quantities more steadily. Designed for use both in homes and coffee shops, the bean hopper can hold up to 350g (12.34oz) and the scale can measure up to 3kg (6.6lbs). The Orion is capable of displaying weight in both grams and ounces and is equipped with a bluetooth receiver to receive firmware updates via the Acaia App.
Dimensions: 13.19” W x 7.87” D x 14.17” H
Weight: 7.14 lb


While at Qualcomm Ventures, Gareth has helped define the investment thesis around unmanned aerial vehicles (UAVs) and robotics, and led investments in companies such as 3D Robotics and Spire. Gareth started his professional career as an engineer, and spent many years in engineering roles before turning to the darkside. Currently, he serves on the board of various companies, including August Home, EyeSee360, 3D Robotics, LIFX, and Skycatch. In addition, Gareth is a Kauffman Fellow. We are so excited to have him on stage at the Pioneer Summit!
Prior to Qualcomm Ventures, Gareth worked on corporate development at Texas Instruments and National Semiconductor. He has also worked on methodologies and design flows as an engineer and manager at PMC-Sierra and has developed semiconductor design tools for Cadence.
Gareth holds a Ph.D. in eectronic engineering from Queen’s University of Belfast and a Bachelor’s degree in electrical engineering from the National University of Ireland. He is also an MBA candidate at the Wharton School at the University of Pennsylvania.
The GSV Pioneer Summit is the conference for breakthrough innovation and game-changing entrepreneurs. Pioneer Summit is two-day technology conference (September 14-15, 2016) in the heart of Silicon Valley that is focused on the people and companies building tomorrow’s industries. The Pioneer Summit convenes a global community of daring entrepreneurs and connects them with leading growth investors and global corporations who can help scale their efforts. GSVlabs in Redwood City, California will host the 2016 GSV Pioneer Summit. Buy your ticket now to reserve your place.


We've just received another package with Raspberry Pi, this time from UK. Up and running within 20 minutes.
New instalation Rasperry Pi 4 Model B 4GB RAM for customer from Switzerland.
Hello to Switzerland and thank you for your order.
Today we installed the Raspberry Pi for a client from Denmark. The Raspberry Pi that the client bought directly from us was at the lowest price. Thank you for your trust.
Another order from Germany, Raspberry Pi v 3 + 32GB MicroSD class 10; CloudStorage 1 GB. We hope, that we will satisfy your needs :)