MQTT for A1

eried · January 16, 2024, 1:25am

I want to do some automation, how do I connect to my A1?

this manages to “connect” but inmediately disconnects afterwards (password is the one from the LCD, that works on FTP)

Toorop · January 22, 2024, 8:10am

As far as i know there no MQTT on the A1

amzaldua · January 22, 2024, 8:52am

Maybe this solves your question.
https://www.reddit.com/r/BambuLab/comments/13hsoq0/how_to_publish_mqtt_messages/

Toorop · January 22, 2024, 9:04am

It’s for X series which have MQTT

amzaldua · January 22, 2024, 9:25am

I have an A1 which is communicating with Home Assistant through MQTT using this integration:

eried · January 22, 2024, 3:02pm

oh! maybe this integration uses another way? I wonder if it works when there is no internet on the A1 (to see if is actually using mqtt).

I will install it tho thanks for sharing

Toorop · January 23, 2024, 8:01am

It uses the Bambu Cloud:

Source code:

github.com

greghesp/ha-bambulab/blob/main/custom_components/bambu_lab/pybambu/bambu_cloud.py

from __future__ import annotations

import base64
import json
import requests

from dataclasses import dataclass

from .const import LOGGER

@dataclass
class BambuCloud:
  
    def __init__(self, region: str, email: str, username: str, auth_token: str):
        self._region = region
        self._email = email
        self._username = username
        self._auth_token = auth_token

    def _get_authentication_token(self) -> dict:

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iChris · January 23, 2024, 12:38pm

MQTT is available on the A1 Series, and it’s used the same way you use it on the X1.
But you can only connect when subscribing to “device/>YouPrinterSerial</report”, nothing else
No need to subscribe to the request topic, it will republish all requests in report.

All requests must be sent to “device/>YouPrinterSerial</request”.

Make sure to close both Bambu Handy and Bambu Studio as the printer can only handle a few clients. (2-3)

Toorop · January 23, 2024, 5:19pm

Thanks @iChris, I finally managed to log in !

Here is a short guide using https://mqtt-explorer.com/

Get your authentification pin and your printer serial from the printer.
Create a new connexion in MQTTExplorer:
Warning:
- Use 8883 for the port and not the standart MQTT port (1883).
- Activate TLS encryption.
  
  MQTT_Explorer_4gjwRfD8gp853×444 18.3 KB
Click on the ADVANCED button, add device/YourPrinterSerialHere/report

MQTT_Explorer_J4aLElK9iT851×443 16.5 KB
Click on CONNECT
Et voila !

iChris · January 23, 2024, 11:14pm

Do not forget to disable “Validate certificate”!

Thanks for the summary @Toorop.

Doman · January 24, 2024, 7:41am

Maybe next step will be integrate a A1 to OctoPi

user_3109663035 · February 15, 2024, 10:16am

Hi everyone, how i can start a print of gcode or 3mf file from mqtt? I’m able to connect to my a1 mini through mqtt but I can only send single gcode command, it’s possible to send all file or to start printing from sd file?

user_3109663035 · February 16, 2024, 9:29am

I solved the problem

D.M · February 16, 2024, 9:38am

Good for you. It will be very nice if you share the solution so that the next person looking for this can use it without asking the same thing twice.

edoardo.p.13 · February 18, 2024, 4:56pm

Hi, where can I find the password?

iChris · February 18, 2024, 5:02pm

You will find the passwords in the Settings on your A1 Printer. Go to Settings > Lan Only Mode. Use the access code displayed there as your password. You might experience some performance issues when trying to connect. Make sure to close Bambu Studio and the Handy App if that happens.

loredana.cirstea · February 22, 2024, 8:27pm

where is this serial number displayed on the a1 mini?

loredana.cirstea · February 22, 2024, 10:08pm

I was assuming - maybe wrongly- that you successfully connected the A1 mini…

gboy · February 23, 2024, 4:35pm

You can find in the menus of the screen or in the bambu handy app.

loredana.cirstea · February 23, 2024, 4:52pm

What I found there (on the printer’s menu and in the BambuStudio app) did not work with what @Toorop described with mqtt-explorer for my A1 mini. I thought there is a hidden place that is not obvious.