@mrehorstdmd said in EndStop Accuracy Test:
................ I ran into one problem with opto endstops in my printer- the work room where the printer sits has a large, east-facing window and sunlight falling directly on the printer interfered with them. It took a while to figure out what was going on, but closing the curtains on the window solved the problem. I've never had any other problems with them.
That reminds me of a similar issue I came across. I use a slotted opto switch to get my bed somewhere close at highish speed before homing "proper" using the nozzle. When I first tried to test the switch, it didn't seem to be triggering until I realised that it was seeing straight through the thin piece of paper I was using as a "flag". 😊 (It doesn't see though a piece of 2mm thick aluminium though). ☺