Quote Originally Posted by Tom Bain View Post
So I built this sensor and it worked perfectly at first, but it's kind of "wigging out" on me more recently. When I trigger the sensor the controller/timer will count down as it should but then it won't turn the light on when it gets to zero. I know the light works because when I apply power directly it comes on as it should. I tried to re-program the controller but when I push the "set" button I get nothing (never shows P1). I'm guessing the controller is semi-fried and probably going to order a new one, but wanted to check with the experts here to see if I might be missing something.
I had a similar experience as I posted earlier.

I ended redoing it based on a different design based on a thread I found here. See:

https://sawmillcreek.org/showthread....lection+sensor

Somewhat simpler and is working. The sensor fits into the same size hole.

It is working. I think it's more sensitive as it flashes when I am putting a lot of chips into the bin, but that doesn't seem to be a problem.

Bob