Hall effect sensor tutorial - 3D printer end stops

This video shows how to use linear hall effect sensors to build end stops for 3D printers. The end stops are used to calibrate the absolute position of stepped moving parts. The end stops built in this tutorial are using magnets to detect the proximity of the magnet. The distance can be adjusted using a trim pot.

If you are interested in more practical applications using this sensors see my organ pedals project: https://www.youtube.com/watch?v=449UbRet27c&index=2&list=PLjUbKCHhzPEz8-heBN130AVvVgHStO5b6

More infos about the hall effect: http://en.wikipedia.org/wiki/Hall_effect

music: "Floating" by morgantj 2010 - Licensed under Creative Commons Attribution (3.0) http://creativecommons.org/licenses/by/3.0/ ... https://www.youtube.com/watch?v=9MegJCuHZjI