I just received my Unit V2 and was wondering the same about running MQTT. Doing some digging on the chip and I found they already include the mosquito broker, and it works right out of the box.

I also got the wpa_supplicant to connect this device to an ssid of my network. Now the device can just startup without the serial wire.

Has anyone connected the existing server.py code to MQTT or other interfaces?

Is the best approach just to modify the server.py code to start performing the additional operations, like publishing the JSON data over MQTT?

thanks.

I received the M5 unitV2 and with an up to date firmware, the "Code Detector" feature of the camera isn't working as defined. Basically the camera display isn't showing the found QR codes. But I found the internal file "server_log.txt" is printing out that it finds them.

But the error reported is (with example QR = "http://qr.com")
[line:311] - WARNING: pipe_result_rx_queue full, discard: b'{"code":[{"prob":0.943542421,"x":335,"y":125,"w":90,"h":96,"type":"http://qr.com,"content":""}],"num":1,"running":"Code Detector"}'

I'm new to this forum and didn't know where else to report this information.

Also, does anyone have pointers to startup an MQTT client?

thanks.