Summary

A autolevel for K8200 using a hall endstop.
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Update on 2014-10-9 : Adding photos
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Update on 2014-10-19 :

Support1b-V1.04-2 -> Support1b-V1.05 : bigger hole for the cable connector
Tests Ok With Marlin
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Update on 2014-11-25 :
Adding electrical schema
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Update on 2014-11-28 :
Publication of a more compact version, that can be mounted on the right side of the hothead :
http://www.thingiverse.com/thing:568621

Instructions

This autolevel usethis type of hall endstop :
http://www.reprapdiscount.com/electronics/18-set-hall-endstops3-pieces.html#
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This montage requires 2 magnets, the first for the detection and the second for the park (this detectors are sold with two each).
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For the screws you will need :