I have it hooked up with the diode as outlined in the manual. Could you share your config? Mine stays triggered in both the up and down position. I do have the neopixles hooked up to PBO. I will check the polarity.
I fallowed Nero3d on configing the TAP and already made the printer cfg changes before posting here. The black signal wire is going to PG15 and uncommitted that under Probe in the config. The results are the same. I then removed the sensor and used dark colored needle file handle to test the sensor. It stayed lit up red both ways...Should I try plugging the power and ground into a different socket?