Help: Ubable to Connect Zigbee2MQTT to Sonoff USB

[dmcnaugh15 (Dean)]

PROBLEM DESCRIPTION:
When clicking “open web UI” in Zigbee2MQTT the UI fails to load; instead a popup window says “The add-on seems to not be ready, it might be starting. Do you want to try again?” In the background (outside the window) it says “502: Bad Gateway”. See screenshot. Additionally, the add-on does not stay enabled (i.e. green); it reverts to disabled (red) - see screenshot.

SETUP:
Server: Raspberry Pi 4 (no Docker)
Zigbee device: Sonoff 3.0 USB Dongle
Device path (identified in System → Hardware → All Hardware): /dev/ttyUSB0
Mosquitto broker version: 6.2.1
Zigbee2MQTT version: 1.32.2-1
Home Assistant 2023.8.2
Supervisor 2023.08.1
Operating System 10.5

Zigbee2MQTT CONFIGURATION SETTINGS: (see screenshot)
mqtt:

• server: mqtt://core-mosquito:1883

serial:

• port: /dev/ttyUSB0

[francisp (Francis)]

Two questions :

• Sonoff Dongle P or Sonoff Dongle E ?
• ZHA is not installed ?

[dmcnaugh15 (Dean)]

@francisp It is a P and ZHA is running.

[francisp (Francis)]

then you can’t connect to Zigbee2mqtt… only ZHA or Z2M can use the stick, not both at the same time.

[dmcnaugh15 (Dean)]

Good info. Wonder if you can answer a couple [related] followup questions for me… the reason I was trying to install Z2M was because my Aqara Magic Cube stopped working. I don’t know why it was working for over a year and then stopped. Perhaps an update broke it, but idk. As I read more, it sounds like you need the Aqara hub for it to work; preferably the v1 hub - but you can’t buy that anymore. Then I read people get around the need for a hub by using Z2M. So… these are my followup questions:

1. In general, do you think Z2M is a better option than ZHA, when considering reliability and functionality?
2. Any idea if Z2M would be likely to fix my original issue with the Aqara cube?

[dmcnaugh15 (Dean)]

Actually… just did some online reading on ZHA vs Z2M. Found this: Zigbee2MQTT vs ZHA vs deCONZ. I think it answers my follow up questions.