[Bug] Current layer value changes automation not working

[Alvie]

Home Assistant Version

2024.11.3

Bambu Lab Integration Version

v2.0.38

Describe the bug

On creating an automation for current layer change, I am receiving an error message saying "Message malformed: must contain at least one of below, above:

To Reproduce

1. Create New Automation
2. Choose your Bambu Lab Printer as a trigger device.
3. Choose "Current layer value changes" for the when
4. Choose any action (e.g. Send notification)
5. Save

Expected Behaviour

I expect the automation to save. Ideally whenever the layer number goes up, it triggers an event, without needing an above / below value.
config_entry-bambu_lab-01JDBB762Y7GMWCJ8JKY843MP8.json

What device are you using?

A1 Mini

Diagnostic Output

[config_entry-bambu_lab-01JDBB762Y7GMWCJ8JKY843MP8.json](https://github.com/user-attachments/files/17878141/config_entry-bambu_lab-01JDBB762Y7GMWCJ8JKY843MP8.json)

Log Extracts

No response

Other Information

No response

[AdrianGarside]

Home assistant is telling you that the automation you are creating requires an above or below value to be configured. This is unrelated to this integration.

[Alvie]

Home assistant is telling you that the automation you are creating requires an above or below value to be configured. This is unrelated to this integration.

EDIT: I think I have now just realised these triggers are not at all from the integration, I am sorry about that. I don't know where they are from, but perhaps a layer change trigger will be available in the future?

EDIT 2: I just read the message on
#777 and that answers my question, I'll have to find another way to do this then, thanks!

#777 (comment)

It seems that it is expecting there to be a value for above / below for the "current layer change" but there is no input to set this.

For the print length distance change, the inputs do appear.

Regardless, is there a way to trigger an event when the layer changes? I ask because I want to program the gcode to move the head out of the way (at the start of the layer), and eventually to get a different camera to take a snapshot so I can create a timelapse. Right now I just tried to get it to send a notification to my phone but I cannot even get it to do that.

Please let me know if this trigger is possible with this integration, thanks.

[AdrianGarside]

The integration must be indirectly influencing how home assistant is categorizing the sensor type. I’ll take a look.

[Alvie]

The integration must be indirectly influencing how home assistant is categorizing the sensor type. I’ll take a look.

Thanks, sorry if it's a bit different to what I initially posted but it'll be good if it's fixed. I hope that I haven't confused things.

[jowlo]

You can definitely do an automation triggered by layer change. I often forget to put a pause at the layers in which i want to insert hex nuts. You can't add a pause to the gcode after sending off the print, so i have an automation that pauses the print when the layer changes to the one i want to pause (before), and sends a notification to my phone.

This is the automation in yaml format, it has saved me a few times already :)

alias: 3d-printer:pause-at-layer
description: ""
triggers:
  - trigger: numeric_state
    entity_id:
      - sensor.a1mini_01020c010203f_current_layer
    # remove this and change the trigger to 'state' to trigger on every layer change
    above: 27
conditions: []
actions:
  - action: button.press
    metadata: {}
    data: {}
    target:
      entity_id: button.a1mini_01020c010203f_pause_printing
  - action: notify.mobile_app_my_phone
    metadata: {}
    data:
      message: Print paused
mode: single

[AdrianGarside]

But presumably you had to craft the automation in yaml since HA doesn't have the above file in the UI?

[jowlo]

But presumably you had to craft the automation in yaml since HA doesn't have the above file in the UI?

No, i created it using the UI, you can either select the entity directly in a trigger for a numeric state (what i did) or first select the device and then choose the Layer Change event. It's all in the UI.

I just pasted the yaml output here because you can copy-paste it better.

[AdrianGarside]

What version of home assistant / integration? I see the same as OP - no UI for above/below and an error when saving. I had to make a code change to set the unit type to a space character to get the UI to appear as it does for other measurement sensors.

[jowlo]

I am running HA 2024.11.2 and Bambulab Integration v2.0.38. However, it has been working for me for a long time, with older HA and integration versions.

I did have some connection problems with newer firmware versions with Bambu Studio, so I downgraded my A1 Mini firmware to the one it came with. It was two versions older than the current one, I don't know where to look it up (during a print). Is the firmware version relevant here?

Note: Added screenshots of the UI to the comment above