PZEM-004 (updated: 19 Jul 2019, 21:54:45)

PZEM-004t Power Monitor via MQTT/HTTP.

Reading data from the PZEM-004t power monitor.

Connect RX and TX to TX and RX of esp8266 module. For 3.3V power supply power monitor needs modification (R17 must be changed with 510 Ohm resistor)