a magnet based probe

prusaprinters

<p>This is a total reshape of Unklicky, since microswitch is no longer used.</p><p>It is a compact design with just two sets of magnets, still providing sufficient stability.</p><p>It requires higher force for operating, so it's possible to touch the z-endstop directly with the probe pin.</p><p>Unfortunately the Klicky parts are not compatible with this model.&nbsp;</p><p>BOM:</p><ul><li>4x 6x2.6mm round magnet&nbsp;</li><li>1x&nbsp;6x2.5(~3)mm, hole 3mm, round magnet</li><li>1x 3x2mm round magnet</li><li>1x&nbsp;M3x12 SHCS (carbon steel screw with strong magnetic required, &nbsp;partially threaded screw preferred)</li><li>1x&nbsp;M3x5x4mm&nbsp;heat set insert</li><li>2x M3x16 SHCS (for Stealthburner toolhead mount)</li><li>1x 6x3mm round magnet (for side dock)</li><li>2x M3x16 SHCS (for side dock)</li><li>2x&nbsp;M3x5x4mm&nbsp;heat set insert (for side dock)</li><li>1x M5x10 BHCS (for side dock mount)</li><li>1x M5x30 BHCS (for side dock mount)</li></ul><p>Installation:</p><p>Note that you'll need to sand the pin for a smooth surface.</p><figure class="image"><img src="https://media.printables.com/media/prints/264374/rich_content/4f22c039-6328-45ee-b0d9-59030581b023/installation1.jpg#%7B%22uuid%22%3A%22c2faef9b-d068-4bce-979e-a82bc5b42c9e%22%2C%22w%22%3A1643%2C%22h%22%3A1471%7D"></figure><figure class="image"><img src="https://media.printables.com/media/prints/264374/rich_content/d27cb68e-6d8e-4507-a8bc-1448ddf86f7c/installation2.jpg#%7B%22uuid%22%3A%221592e655-d2dc-44e2-a550-a88768babe31%22%2C%22w%22%3A1558%2C%22h%22%3A1359%7D"></figure><p>Ensure these two magnets repel each other.</p><figure class="image"><img src="https://media.printables.com/media/prints/264374/rich_content/190fc7d4-1132-4442-be96-71e666fac907/installation3.jpg#%7B%22uuid%22%3A%228f34e239-156a-466b-9ca2-619142c6cc7d%22%2C%22w%22%3A1103%2C%22h%22%3A876%7D"></figure><p>&nbsp;</p><p>Offset values for Stealthburner:</p><p>(please verify these values before printing, they may need modifications for your case)</p><p>x_offset: 27</p><p>y_offset: 0</p><p>z_offset: 11.2</p><p>switch_offset: 0.02 (for automatic z offset calculation)</p><p>&nbsp;</p><p>Resources:</p><p>Unklicky: <a href="https://github.com/majarspeed/Unklicky">https://github.com/majarspeed/Unklicky</a></p><p>Klicky: <a href="https://github.com/jlas1/Klicky-Probe">https://github.com/jlas1/Klicky-Probe</a></p><p>auto z offset: <a href="https://github.com/protoloft/klipper_z_calibration">https://github.com/protoloft/klipper_z_calibration</a></p>