Multiple PZEM-004T #2

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Playing with multiple PZEM-004T AC sensor module using their Modbus-RTU protocol
  1. Adam Alfath
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Комментарии
Автор

hi! looks nice! do you connect all RXes and TXes just parallel without any converter or buffer?

daiolix
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Hello, can you share your source code or sketch please? I got one PEZM on ESP32 running but not two of them with UART RX/TX in parallel.

Lieblingszuschauer
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Hello. There are 3 pzem-004t v3 in my project and I am trying to get data with nodemcu. I can retrieve data for each pzem one by one without any problems. However, when I connect to D3 and D4 pins, whether I define an address or not, only the last address is returned and mostly data is missing. Can I have your code that shows the sensor readings except the important parts?

irfansensoy
Автор

Does it properly calculate a non-linear load?? Phone chargers, AC motors, fridges?? Mine doesn't - lowering everything entries but voltage IN HALVES (or near in halves). Two options: I don't understand sth important, and all this theme is just TOTAL BULLSHIT... ??

schabanow