@karenbobiv
I doubt it's related to the MySensors communication. Are you using a Dallas temp sensor? Could you check that the is actually connected to the dallas sensor by using isConnected().
When googling your problem I found a few hits on -196.6 which is the error code (DEVICE_DISCONNECTED) converted to Fahrenheit.
Start debug mode (Config.h) to see what the sensor actually sends.
Thanks everyone for the answers. However what I would like to do is create a routine with Dzvents that when I have the "red" indication (as shown in the image) causes a switch to operate which cuts the voltage to a device. The value of ".lastUpdate.minutesAgo" seems not to be the right solution because it continues to be increased in any case, regardless of the temperature value and the status of the "red" or normal indication.
@mutantx, sorry for the late reply, but I was on holidays
I've no experience with this sketch code, nor the hardware build of this mp3 player.
Try to contact the author of this player or you can check the general documentation about the use of V_VARx / S_CUSTOM : https://www.mysensors.org/download/serial_api_20
Try to break up things in little pieces when accumulating knowledge about mysensors.
Big complicated sketches can be overwhelming.
I start always, when troubleshouting, with the cleanest version of the script, with minimum code required for operation. And then I build it up.
