Cheap-O (the sub $2 magnetic endstop)
by hmeyer, published
PLUS - it has a control LED.
Cheap-O in action: youtube.com/watch?v=smRay_nAUWA
Update: Improved STL for super slim design.
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I have +5 at the side opposite the LED, and Ground at the center, as per the datasheet. However, it appears that the TLE is fine with negative Vs, so swapping things around would also work.
In my final version, I connected the LED resistor to +5 rather than ground, and reversed the LED, which gave it the expected behavior.
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Drill 2 3 mm holes.
Solder according to photos and schematic.
Glue a magnet to your axis (I used 3 mm neodym cubes).
enjoy your cheap and accurate endstop.
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