Interesting!
For Homing on Morgan I use a small magnet inserted into a hole in the disk, with a digital hall effect sensor as limit switch. Because the magnet moves sideways, the switching range of the polarity dependent switch is very small, making it quite accurate.
I am allergic to anything optical. Real job is medical imaging systems, and opto sensors on moving parts are prone to dust, dirt. yellowing due to heat etc.
For Homing on Morgan I use a small magnet inserted into a hole in the disk, with a digital hall effect sensor as limit switch. Because the magnet moves sideways, the switching range of the polarity dependent switch is very small, making it quite accurate.
I am allergic to anything optical. Real job is medical imaging systems, and opto sensors on moving parts are prone to dust, dirt. yellowing due to heat etc.