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Revision to BLTouch Troubleshooting

Marc Boivin

* '''Check the Pin.''' The BLTouch won't function reliably if the pin is dirty or damaged. The pin can be removed for cleaning or replacement. The set screw at the top of the BLTouch holds the pin inside the body, and also acts as the ferrous core for the electromagnet to draw up the pin. Try loosening or tightening the set screw slightly to adjust the trigger sensitivity.
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+* '''Make sure you have all the required files''' if you are coming from another probe or endstop to the BL TouchYou need to make sure you change your homez.g, add releaseprobe.g and deployprobe.g.

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