Here is a simple Arduino Camping Light project. In this design, only one push button switch is used to control the light output (from a bunch of white LEDs) between off, dim, medium, and full ...

Now lets see the schematic and how I’ve connected the 8 leds + resistors and 1 button + pull-up resistor to the Arduino Board (this was the easy part). In the first picture you have the schematic as ...

With a modern cellphone, you don’t really “hang up” and there ... phone dial using an Arduino. The idea behind a phone dial is actually pretty simple. When you pull the dial back to ...