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Fast delta auto calibration using differential IR Z probe

Posted by dc42

dc42

Fast delta auto calibration using differential IR Z probe
June 01, 2015 08:33AM

Registered: 10 years ago
Posts: 14,672

I have been asked a few times to do a video showing delta printer calibration using my fast auto-calibration algorithm, and also to show my mini differential IR Z probe. So you can now see a video that demonstrates both at [youtu.be].

Large delta printer [miscsolutions.wordpress.com], E3D tool changer, Robotdigg SCARA printer, Crane Quad and Ormerod

Disclosure: I design Duet electronics and work on RepRapFirmware, [duet3d.com].

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Zedsquared

Re: Fast delta auto calibration using differential IR Z probe
June 07, 2015 09:29AM

Registered: 12 years ago
Posts: 153

Nice and swift smiling smiley

Is the black paint under your glass necessary for the IR (to catch only the top surface reflection perhaps)?

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dc42

Re: Fast delta auto calibration using differential IR Z probe
June 07, 2015 11:54AM

Registered: 10 years ago
Posts: 14,672

Yes. The reflection from the uncoated top surface of the glass is quite weak, and without the black paint, the strong reflection from the aluminium underneath would affect the sensor too much.

Large delta printer [miscsolutions.wordpress.com], E3D tool changer, Robotdigg SCARA printer, Crane Quad and Ormerod

Disclosure: I design Duet electronics and work on RepRapFirmware, [duet3d.com].

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dc42

Re: Fast delta auto calibration using differential IR Z probe
June 10, 2015 06:11AM

Registered: 10 years ago
Posts: 14,672

I will shortly be making a new batch of mini IR sensors. See [forums.reprap.org] for prices and ordering instructions.

Large delta printer [miscsolutions.wordpress.com], E3D tool changer, Robotdigg SCARA printer, Crane Quad and Ormerod

Disclosure: I design Duet electronics and work on RepRapFirmware, [duet3d.com].