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.
The CTSX100, 200 and 300 series devices are now in volume production; they employ Crocus’ Magnetic Logic Unit (MLU) technology for higher performance and lower cost in multiple consumer and industrial sensing applications.