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JhonControl / PZEM-004t-basic-ESP32-Arduino-ESP8266-Python-RPi

PZEM-004T Basic Test & ESP32, Arduino Nano, ESP8266, Arduino UNO + Shield Ethernet W5100, Python with Raspberry Pi.
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PZEM-004t v3 #1

Open NA7KR opened 4 years ago

NA7KR commented 4 years ago

Has anyone got this working with PZEM-004t v3 in Python

I get no response from unit.

wouterdebruijn commented 4 years ago

Has anyone got this working with PZEM-004t v3 in Python

I get no response from unit.

Hi, did you find something that worked?

NA7KR commented 4 years ago

I have been working on some code can post to github what I have over weekend

Sent from iPhone

From: Wouter de Bruijn notifications@github.com Sent: Friday, January 24, 2020 6:20 AM To: JhonControl/PZEM-004t-basic-ESP32-Arduino-ESP8266-Python-RPi Cc: NA7KR; Author Subject: Re: [JhonControl/PZEM-004t-basic-ESP32-Arduino-ESP8266-Python-RPi] PZEM-004t v3 (#1)

Has anyone got this working with PZEM-004t v3 in Python

I get no response from unit.

Hi, did you find something that worked?

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cmheong commented 2 months ago

My pzem-004t v3 uses Modbus protocol. Try changing the communications codes. This worked for me on Raspberry Pi via a USB-serial TTL dongle. class PZEM:

setAddrBytes = [0xB4,0xC0,0xA8,0x01,0x01,0x00,0x1E]

    #readVoltageBytes       =       [0xB0,0xC0,0xA8,0x01,0x01,0x00,0x1A]    
    readVoltageBytes        =       [0x1,0x4,0x0,0x0,0x0,0xa,0x70,0xd]      
    ...
    ...