One phase pzem004 meter
thingiverse
Case for esp8266 + pzem004 + power supply HLK-PM01 5V For connections ask google. Only power and rx/tx connections used. Also make a cover for oled display (I2C 0.96" OLED 128x64) but doesn't test it. esp board(why? bcs I have one): https://www.aliexpress.com/item/1000001129692.html Software: ESPHome (https://github.com/esphome/feature-requests/issues/49)
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