So the project today is how to measure AC voltage up to 250V, in both 50Hz and 60Hz, using the ZMPT101B, that’s the name of the transformer only, but you’ll find it around with this name or “AC voltage sensor”. Watch the tutorial for further explanations. It’s this way if you need to measure AC current as well: Measure any AC current with ACS712 and Arduino + LCD / OLED pay attention and be very careful it’s dangerous. Hello guys, and welcome, before we start anything, I want to warn you about messing with domestic voltage, power line, wall power…. Need this with ESP8266 12E (NodeMcu)? Check: Measure any AC voltage (250VAC) with ZMPT101B and ESP8266 12E with Android App / Adafruit IO MQTT
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