Did you know that you can use Arduino to turn on an LED when you press a button? Well, it is true, you can do this! Leaving the joke aside, let me show how you can achieve this. You will need the ...

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 ...

When you read “Arduino wristwatch ... For example, if the time is 9:26 you’d get LED 9 (hours), LED 5 for 25 minutes, and the third press would show LED 1 for 1 extra minute.

Let it hit your red LED ... button presses would make it speed up even more. But there are really just the two speeds with the current programming. Inside the cool laser-cut box is an Arduino ...

The Arduino ... Once you push the button to start the timer, it will run for 25 minutes, display a count-up timer and a "Study time!" message on the LCD, and turn a green LED on.