Bridge fails to connect to printer #1

New Issue

dkuba4 · 2026-04-25T20:33:10+02:00

dkuba4 commented

2026-04-25 20:33:10 +02:00

So I opened Anycubic Slicer, I've selected the printer from the LAN tab, and then run the python script to get the credentials, I made sure to paste them on the website, after I just rebooted the script, and I get the following output:

[20:30:13] INFO Verbinde mit Drucker 192.168.1.102:9883 …
[kobrax] TLS: TLS_AES_256_GCM_SHA384
[20:30:13] WARNING Drucker nicht erreichbar (CONNACK failed: 20020005) – starte im Offline-Modus
[20:30:13] INFO Bridge läuft auf http://0.0.0.0:7125
[20:30:13] INFO OrcaSlicer → Klipper → Host: 0.0.0.0  Port: 7125
[20:30:13] INFO Ctrl-C zum Beenden
[20:30:13] INFO Drucker erreichbar – stelle MQTT-Verbindung her …
[kobrax] TLS: TLS_AES_256_GCM_SHA384
[20:30:13] WARNING Verbindungsaufbau fehlgeschlagen: CONNACK failed: 20020005
[20:30:16] INFO Bridge beendet

Printer information:
Kobra X (Firmware version 1.2.0.2)
KX Bridge version: 0.9.1-beta10

So I opened Anycubic Slicer, I've selected the printer from the LAN tab, and then run the python script to get the credentials, I made sure to paste them on the website, after I just rebooted the script, and I get the following output: ```❯ python kobrax_moonraker_bridge.py ✔ [20:30:13] INFO Verbinde mit Drucker 192.168.1.102:9883 … [kobrax] TLS: TLS_AES_256_GCM_SHA384 [20:30:13] WARNING Drucker nicht erreichbar (CONNACK failed: 20020005) – starte im Offline-Modus [20:30:13] INFO Bridge läuft auf http://0.0.0.0:7125 [20:30:13] INFO OrcaSlicer → Klipper → Host: 0.0.0.0 Port: 7125 [20:30:13] INFO Ctrl-C zum Beenden [20:30:13] INFO Drucker erreichbar – stelle MQTT-Verbindung her … [kobrax] TLS: TLS_AES_256_GCM_SHA384 [20:30:13] WARNING Verbindungsaufbau fehlgeschlagen: CONNACK failed: 20020005 [20:30:16] INFO Bridge beendet ``` Printer information: Kobra X (Firmware version 1.2.0.2) KX Bridge version: 0.9.1-beta10

viewit added reference master

2026-04-25 22:06:47 +02:00

viewit self-assigned this 2026-04-25 22:06:57 +02:00

viewit commented

2026-04-25 22:10:10 +02:00

Docker or Standalone ?
Ping Printerip is ok ?
It looks like your login credentials are incorrect. Please try running the password recovery tool with the --verbose parameter and test the passwords it finds. Does your username start with “user”?

Docker or Standalone ? Ping *Printerip* is ok ? It looks like your login credentials are incorrect. Please try running the password recovery tool with the --verbose parameter and test the passwords it finds. Does your username start with “user”?

dkuba4 commented

2026-04-26 12:10:41 +02:00

Ye everything was fine, I ended up booting my laptop, and installed ASN there and just extracted the credentials from there, it is working, other than the camera.

viewit commented

2026-04-26 13:03:42 +02:00

Do you use Windows or Linux? For Windows, ffmpeg.exe must be in the same directory as the bridge. I'm currently working on an update for the Windows version as well. A few bugs have been fixed, and the README has been updated accordingly. I'm glad to hear that it works in principl

dkuba4 commented

2026-04-26 13:35:58 +02:00

I am using a docker container that just runs the python script. I've also found another issue, should I report it here, or make a new bug report, it is related to what I would assume is filament parsing.

services:
  kx-bridge:
    image: python:3.12-slim
    container_name: kx-bridge
    working_dir: /app

    volumes:
      - /mnt/Ext_Drive/SMB_Share/Docker/kx-bridge:/app

    command: sh -c "pip install --no-cache-dir -r requirements.txt && python kobrax_moonraker_bridge.py"

    ports:
      - "7125:7125"

    restart: unless-stopped

    logging:
      driver: json-file
      options:
        max-size: "10m"
        max-file: "3"

I am using a docker container that just runs the python script. I've also found another issue, should I report it here, or make a new bug report, it is related to what I would assume is filament parsing. ``` services: kx-bridge: image: python:3.12-slim container_name: kx-bridge working_dir: /app volumes: - /mnt/Ext_Drive/SMB_Share/Docker/kx-bridge:/app command: sh -c "pip install --no-cache-dir -r requirements.txt && python kobrax_moonraker_bridge.py" ports: - "7125:7125" restart: unless-stopped logging: driver: json-file options: max-size: "10m" max-file: "3" ```

viewit commented

2026-04-26 14:04:01 +02:00

add

RUN apt-get update && apt-get install -y --no-install-recommends ffmpeg && rm -rf /var/lib/apt/lists/*

see dockerfile in repo .

add `RUN apt-get update && apt-get install -y --no-install-recommends ffmpeg && rm -rf /var/lib/apt/lists/*` see dockerfile in repo .

viewit commented

2026-04-26 15:15:31 +02:00

Fixed in v0.9.1-beta12:

The error message for wrong MQTT credentials (code 20020005) is now human-readable: Wrong MQTT credentials (wrong username, password or device ID).

Make sure extract_credentials is run while the Anycubic Slicer is open and connected to your printer.
Fmpeg is now not needed .

Fixed in v0.9.1-beta12: The error message for wrong MQTT credentials (code 20020005) is now human-readable: `Wrong MQTT credentials (wrong username, password or device ID)`. Make sure `extract_credentials` is run while the Anycubic Slicer is open and connected to your printer. Fmpeg is now not needed .

viewit closed this issue

2026-04-29 14:55:31 +02:00

Sign in to join this conversation.

2 Participants

Notifications

Due Date

No due date set.

Dependencies

No dependencies set.

Reference: viewit/KX-Bridge-Release#1