IR sensors rely on an emitter (IR LED) and a detector (photodiode or photoresistor) to measure infrared light and convert it ...

Some readers may recall building a line-following robot during their school days. Involving some IR LEDs, perhaps a bit of LEGO, and plenty of trial-and-error, it was fun on a tiny scale. Now imagine ...

Here is a very simple and easy robot named Line following robot. The line follower robot is a basic robot that follows a specific path indicated by a line having some particular width. This circuit ...