# Automated LED 

You are now ready to build your first circuit. You will need the components listed below.

```{admonition} Component list
- Microprocessor (for these examples either Arduino Uno or Raspberry Pi Pico)
- Breadboard
- LED light
- 220 Ω Resistor
- 2x M/M wires
```

Using an LED, you will see how the microprocessor can be programmed to control simple digital outputs.


```{admonition} What's new?
:class: tip
- Using modules
- Defining variables
- Creating loops
- Handling digital outputs
```