We know that LED is a two terminal semiconductor device. It is used in most of the electronic circuits as a sign or visual representation to the normal human to know that circuit is working properly.

Simple Sound Processor presented here is an ultra-simple circuit module suitable for almost all basic electronics and microcontroller projects. For example, this module can be used as a front-end in ...

If you are searching for a simple way to learn about electronics that requires no soldering and is delivered to your door on a monthly basis you may be interested in Crazy Circuits which take the form ...