i’m working on something like " smart laboraory " , so i’m trying to make a smart voltage sensor that can read voltage and monitor it on a mobile phone using openhab ( through mqtt ) .
my imagination is to use a voltage sensor with esp8266 module communicating e.g. via MQTT with OH.
i need any help about :
- the circuit diagram of the sensor and esp
- the program that would be loaded on esp
- config of openhab ( things , items , rules )