Update hot.py
Use analog sensors on CPX, display potentiometer heat changes on NeoPixels
import time
+import board
+from analogio import AnalogIn
from adafruit_crickit import crickit
+import neopixel
print("Heating Pad Demo")
-# For signal control, we'll chat directly with seesaw
-ss = crickit.seesaw
-TMP36 = crickit.SIGNAL1 # TMP36 connected to signal port 1 & ground
-POT = crickit.SIGNAL8 # potentiometer connected to signal port 8 & ground
+pixels = neopixel.NeoPixel(board.NEOPIXEL, 10, auto_write=False)
-heating_pad = crickit.dc_motor_2
+def show_value(heat_val): # Show throttle on NeoPixels on CPX
+ num_pixels = int(10 * heat_val)
+ for i in range(num_pixels):
+ pixels[i] = (10*(i+1), 0, 0)
+ for i in range(num_pixels, 10):
+ pixels[i] = (0, 0, 0)
+ pixels.show()
+ return
-while True:
+TMP36 = AnalogIn(board.A3) # TMP36 connected to A3, power & ground
+POT = AnalogIn(board.A7) # potentiometer connected to A7, power & ground
- voltage = ss.analog_read(TMP36) * 3.3 / 1024.0
- tempC = (voltage - 0.5) * 100.0
- tempF = (tempC * 9.0 / 5.0) + 32.0
+heating_pad = crickit.dc_motor_2 # Set the motor object to heating pad
- heat_value = ss.analog_read(POT) / 1023.0
+while True: # Loop Forever
- print((tempF, heat_value))
+ voltage = TMP36.value * 3.3 / 65536.0 # Read temp sensor, get voltage
+ tempC = (voltage - 0.5) * 100.0 # Calculate Celsius
+ tempF = (tempC * 9.0 / 5.0) + 32.0 # Calculate Fahrenheit
+ tempF = (tempC * 9.0 / 5.0) + 32.0 # Calculate Fahrenheit
- heating_pad.throttle = heat_value # set heat value to Motor throttle value
+ heat_value = POT.value / 65536.0 # Value (0.0 to 1.0) to drive pad
- time.sleep(0.25)
+ print((tempF, heat_value)) # Display temperature and drive
+ show_value(heat_value)
+
+ heating_pad.throttle = heat_value # set Motor throttle value to heat_value
+
+ time.sleep(0.25) # Wait a bit before checking all again
