Arduino projects can ... sensors. The main code is a simple 14-line piece with a simple if-else statement you can readily modify. As an upgrade to the project, you can add an LCD monitor ...

Sometimes you need a little utility device to do a very simple job, and do it well.This one-shot IR helper from [Gregory Sanders] is just that. [Gregory] had a TV that didn’t support automat… ...

Build a Battery Tester. An Arduino can be used to test the life of any battery with less than 5 volts, Boxall says. So, for a quick way to see how much juice your AAA, AA, C, or D batteries have ...

The principle of this setup is somewhat simple and self-explanatory. In this circuit, the infrared emitter IRED1 is modulated by connecting its anode (A) to ~38kHz signal yielded by D9 of the Arduino ...