ESP32: count LED pulses on your utility meter to track kWh
Read your utility meter's blinking LED with an ESP32 photoresistor and count real kWh: interrupt pulse counting, kWh math, and MQTT for a live whole-house power figure.
Tag
#meter
1 tutorial
Tag
1 tutorial
Read your utility meter's blinking LED with an ESP32 photoresistor and count real kWh: interrupt pulse counting, kWh math, and MQTT for a live whole-house power figure.