Move a Bambu Lab print head and bed in Home Assistant

README.md

Setup

If you haven't already, install Bambu Lab from HACS.

1. (Optional) Create an "Input Select" Helper with options 1, 30, 50. This is used as a default movement distance.
2. Create a new Script, switch to YAML mode and paste the contents of bblab_move_axis.yaml.
3. If you haven't created the input select helper, update the distance variable to {{ iif(is_number(distance), distance, 10) }} so that the default movement is 10mm
4. Update the sensor IDs throughout the script to your own device, e.g. sensor.p1s_print_status

Usage

You can either call the script as part of an automation, or add a button. The only variable requirement is direction (up, down, left, right, forward, back).

Example template button:

# Move the print head backwards on the Y axis by 50mm (i.e. towards the rear of the machine)
type: custom:mushroom-template-card
primary: ""
secondary: ""
icon: mdi:arrow-up-thick
tap_action:
  action: perform-action
  perform_action: script.p1s_move_axis
  data:
    direction: back
    distance: 50
grid_options:
  columns: 2
  rows: 1

Caution

This has only been tested on a P1S, it won't work on an A1 or A1 Mini. I also haven't tested this when there's multiple printers configured.

bblab_move_axis.yaml

sequence:
  - variables:
      distance: >-
        {{ iif(is_number(distance), distance,
        states('input_select.axis_move_distance')) }}
  - condition: or
    conditions:
      - condition: state
        entity_id: sensor.p1s_print_status
        state: failed
      - condition: state
        entity_id: sensor.p1s_print_status
        state: idle
      - condition: state
        entity_id: sensor.p1s_print_status
        state: finish
  - condition: template
    value_template: >-
      {{ direction in ['up', 'down', 'left', 'right', 'forward', 'back']
      }}      
  - condition: template
    value_template: "{{ distance > 0 and distance <= 50 and distance % 1 <= 0 }}"
  - variables:
      axis: >-
        {{ iif(direction in ['up', 'down'], 'Z', iif(direction in ['forward',
        'back'], 'Y', iif(direction in ['left', 'right'], 'X', ''))) }}
      distance: "{{ distance * iif(direction in ['up', 'left', 'forward'], -1, 1) }}"
      speed: "{{ iif(direction in ['up', 'down'], 1500, 3000) }}"
  - action: bambu_lab.send_command
    data:
      command: |
        M211 S 
        M211 X1 Y1 Z1
        M1002 push_ref_mode
        G91 
        G1 {{ axis }}{{ distance }}.0 F{{ speed }}
        M1002 pop_ref_mode
        M211 R
    enabled: true
alias: P1S Move Axis
description: ""
icon: mdi:axis-arrow
fields:
  distance:
    selector:
      number:
        min: 1
        max: 50
        step: 1
    name: Distance
    default: 10
    required: true
  direction:
    selector:
      select:
        options:
          - label: Up
            value: up
          - label: Down
            value: down
          - label: Left
            value: left
          - label: Right
            value: right
          - label: Forward
            value: forward
          - label: Back
            value: back
        multiple: false
        mode: dropdown
    name: Direction
    required: true
    default: down