Overview
This is the first real project, and so we should celebrate with fireworks. Except that fireworks are dangerous (Mr. Wizard taught me that) and so we will use the somewhat safer LEDs available.
We have already made the onboard LED blink (in Project 0). In this project we will explore more interesting LED effects, such as colormixing, fading (using Pulse Width Modulation), and persistance of vision (a controlled form of PWM).
In Project 4 we will return to this project and improve on it using interrupts and on-chip peripherals (!).
Regardless, LEDs are pretty to look at and a lot can be done with simple PWM.
Required Equiptment
For this project you will need the following parts, in addition to the basic Atmex setup and tools.
| Picture | Description | Qty. | Manufacturer & part no. | Buy From |
|---|---|---|---|---|
| RGB LED (full spectrum) | 1 |
Kingbright WPF5WAEMBGWBW | Mouser | |
| Super bright red LED (2000+ mcd) | 8 |
Mouser | ||
| 100 ohm resistor | 11 |
Mouser |