An example of this would be the train that is in the North block. Instead of just sending it to the TIL displays it can also be sent to the Arduino which you might be using to control switches or ...

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 ...

Setup 1. Run Arduino. 2. Open the LED blink example sketch: File > Examples > 1.Basics > Blink. You should see a window like in Figure 2. 3. Choose Tools > Board, then select your board, like in ...

This is tutorial number 1 from our series of Arduino tutorials and in this part I will talk about blinking an LED using the one already available on the Arduino Uno board or using an external LED to ...

I created a really simple Arduino sketch based on the "Blink" example. The program just blinks the Arduino LED and writes some data to the serial port: // Pin 13 has an LED connected int led = 13; ...

[NerdRalph] had noticed that the “blink” example program actually includes over 1 kB of extraneous code, and that more complicated programs include even more cruft.