Push Button LED
This simple flashing LED (Light Emitting Diode) circuit is based on the ARDX 07 circuit from Oomlout. It serves as an excellent introduction to combine inputs and outputs. It uses a Pull Down Resistor.
Start by gathering your parts together:
- 1 x Arduino Uno
- 1 x Breadboard
- 1 x LED
- 1 x 560 Ohm Resistor (Green-Blue-Brown)
- 1 x Micro Switch
- 1 x 10K Ohm Resistor (Brown-Black-Orange)
Step 1: Build the circuit

Step 2: Write your code

Now you can upload your code and see if it works.