12v battery monitor

Hi, I’ve installed WebThings on a RPI with a mobile internet in my sailboat. It’s going to be on sea this winter so I’m keeping an eye on temp and humidity. For now the system is running on power from shore, but I need to run it from my 12v battery.

It would be really nice to monitor the voltage on the 12v battery. Any tips ? Sensors, systems?


Try this: https://www.enigma14.eu/wiki/AD_Converter_PCF8591_for_Raspberry_Pi

thanks! I’ll try it and let you know