In this article I will add some simple Arduino LED projects starting with basic ones like how to turn on an LED, blinking, and more ... I love all about electronics, circuit diagrams and crazy ...

It is a pretty common first project to use an Arduino (or similar) to blink an ... view of the LED. You might use this as a safety light that only works in the dark. A simple circuit, but it ...

As you can see from that sketch and the circuit diagram, the LED is connected to the digital pin 13 of the Arduino. Once you verify (compile) the sketch and upload it to the Arduino board, you should ...

You could put the Arduino in deep sleep, if you wanted to and that LED will still blink. With a little work, you could probably adapt this idea to any number of circuits out of the 555 playbook ...