T&L Publications

Thanks for the feedback. The weight sensor requires a lot extraneous mechanical hardware. I would like to rule that out, there are some designs based upon that solution and they do not work very well, are subject to cheating.<p>I want to mount an optical unit in the case above the bin across the pla...

A lot of folks are more inquisitive about the specific application, than they are with providing a specific solution. I am looking to build a sensor device which will detect whan a product drops into the delivery bin of a vending machine. It cannot be infrared as the beam will be broken by a non liv...

I will try to answer both questions. First off sensitivity would be related to be able to make sure that something quickly passing through the beam would trigger it. The other is to be able to adjust the width of the beam. In other words in a garage door opener you can compromise the safety beam by ...

I am looking for a circuit similiar to a garage door safety sensor. I am looking for a setup where I can have an adjustable beam shoot across a distance of no more than 36" and detect a break in the beam,like a pen falling off of a desk and breaking a horizontal beam. I am also looking for a la...