Hi, on my equipment, the voltage across 2 ports is 1.93VDC when the equipment is active and the voltage drop to 1.25VDC when it is not. Could I please get a steer as to the best way for me to detect this via the arduino/ESP8266 for output to MQTT? all the guides I have read have a much wider difference between the active and unactive voltage for voltage detection. In my case the difference is only 0.7V or so.
Any ideas and thoughts would be most appreciated.
Thanks
Any ideas and thoughts would be most appreciated.
Thanks