In this tutorial, we’ll learn led interfacing and programming with arduino uno. Anode of led is connected to digital pin 13 of arduino uno. Light emitting diode is a two-terminal device, which emits light when connected in forward biased mode. forward biased means, anode of led to positive terminal of battery and cathode of led to negative terminal of battery. you can also simulate this circuit in proteus simulation software.
- Arduino uno
- 330 ohm resistor