code: def _find_devices():
      
      ret = []
  
      logger.info('Looking for devices....')
  
      if pyusb1:
          for d in usb.core.find(idVendor=USB_VID, idProduct=USB_PID, find_all=1,
                                 backend=pyusb_backend):
              ret.append(d)
      else:
          busses = usb.busses()
          for bus in busses:
              for device in bus.devices:
                  if device.idVendor == USB_VID:
                      if device.idProduct == USB_PID:
                          ret += [device, ]
  
      return ret
docs: Returns a list of CrazyRadio devices currently connected to the computer