4. How to use M5Unit-PoESP32 ?

How to use M5Unit-PoESP32 ?

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    Hi,

    I purchased a Power Over Ethernet ESP32 (M5Unit-PoESP32) thinking I could run sensors and send the data over to either Home Assistant, Blynk or my own server. But receiving the unit I realize I have no idea how to use it even after reading all the online doc.

    I purchased a USB Downloader Kit and I'm able to connect to it with my computer now and download the firmware.

    1. In Arduino IDE what unit type should I select? The closest I found was "ESP32-WROOM-DA" but have never been able to see the serial output.

    2. How do people use this device with the default firmware ??

    3. Is there I2C pins I can use to plug sensors ?

    4. In my Arduino IDE code I usually include WiFi.h. What is the replacement to have my same code work over ethernet?

    #include <WiFi.h> // importing all the required libraries
#include <WiFiClient.h>

    Thanks!
    Frank

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  • @frankqc said in How to use M5Unit-PoESP32 ?:

    M5Unit-PoESP32

    do you have any other controller to work with it?
    The way I see it is that ie you have let say M5Core with some I2C units (sensors) connected to it
    then add your M5Unit-PoESP32 connected to M5Core too over UART port (blue) to give whole setup access to local network and power ...

    docs examples etc

    0_1707209400835_poe0.jpg

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  • Hello @frankqc

    Scenario A : PoESP32 runs default AT command firmware and is used as unit connected to anther core.
    Scenario B : PoESP32 runs alternate firmware, runs standalone and is not a unit.

    Re 1. : for scenario B try something like a generic ESP32 board, e.g. ESP32 Dev Module

    Re 2. : for scenario A like @robski mentioned the other core sends AT commands to the PoESP32 unit. See examples here - section Example/Arduino.

    Re 3. : for scenario B the Groove port should be usable for I2C.

    Re 4. : for scenario B see example here.

    Thanks
    Felix

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