Use an ESP8266 to replace RPI and Arduino. Running BrewPi without Pi, therefore, BrewPi-Less
To use the temperature reading of iSpindel as Beer sensor, run Device Setup, and assign the External Sensor as “Beer Temp”.

The report period of iSpindel should be less than 1-3 minutes.(To be tested.) If no report from iSpindel for over 5 minutes, the sensor is considered as disconnected.