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Is there a simple way to get just the inductive probe status?

Posted by PeteDD

PeteDD

Is there a simple way to get just the inductive probe status?
April 02, 2021 05:46PM

Registered: 3 years ago
Posts: 3

I would like to just test the Z-axis inductive probe (for example by holding an Allen wrench under the probe) and get feedback to my BTT TFT43 display that the inductive probe is triggered.
I know I can issue an M119 command and get all the limit switch statuses, but I only want the status of the Z-probe.
Thanks!

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rq3

Re: Is there a simple way to get just the inductive probe status?
April 02, 2021 06:25PM

Registered: 4 years ago
Posts: 285

I apologize that it's not a Marlin fix, but can you wire a low current LED to the probe signal line? I've done that to the piezo probe on my delta, and it is nice to be able to see the LED flash when the probe is triggered. There is a need for what you want in Marlin. It's a neat idea, and you may want to add a feature request to the Marlin github. It should be easy to do, if it doesn't already exist.

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PeteDD

Re: Is there a simple way to get just the inductive probe status?
April 02, 2021 07:18PM

Registered: 3 years ago
Posts: 3

Yes, we have an LED on the probe but what I was hoping to have is a more complete test that lets me know that the Marlin software is actually seeing the probe being triggered without depending on the user to check the LED on the probe.