In this project, we will be using potentiometer to vary the pitch of the sound. This is basically the same as controlling the LED, the only difference is we need to calculate a corresponding pitch …

In this project, we will learn how to use a speaker (peizo sounder) and use switch button to change the pitch of the sound. Sorry about this one, you might find it a bit difficult …

In this project, I will show you how to control multiple LEDs, and use a switch button to change displaying pattern. I will also show you how to include header file to make code tidier.

In our first project, I will be showing you the basic connections of a LED circuit. To make it more interesting and challenging, I later on replace the switch with a potentiometer, to control the …