Code to link the Lambda Shield 2 for Arduino to an mqtt server
This code was written to use the Lambda Shield 2 from Bylund to measure the oxygen content in the exhaust of a wood stove. Through mqtt this can be used in home assistant.
Update your wifi network name, password and IP address in the code. When starting up the serial port shows information about the wifi networks and their quality.
Code based on the example of Bylund.