Recent content by eRazed

could I get rid of the first issue by using an LED to replace the object? Wouldn't doing the experiment in a dark room fix the noise problem? If not, how would I do an ultrasound sensor? I'm not really very familiar with them.

Homework Statement I am just about to start my AS level Advancing physics - Sensors coursework. I was wondering whether it would be a good idea to build a proximity sensor using an LDR in a potential divider. I would reflect an LED off an object, and move the object at different...