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 ...

This goes through an OR gate and an inverter to drive pin 13 of my Arduino (the LED built into the board). The net effect is the LED will blink unless you ... function in the block diagram ...

Instructables user vatosupreme created the effect in the above video by constructing the eyes using ping-pong balls, LEDs, and wooden poles and connecting those LEDs to a control board built with ...