This was for a school project in which we had to design a shield for the Arduino Uno.
The goal was to program a small 'roulette table' with 13 LEDs. Pushing the button would play an animation to simulate a rolling ball until it came to a halt at a random LED.
This PCB was not difficult to design, the focus of the project was on management and documentation. The documentation is in german.
Warning: each LED needs around ? mA current to be driven. As the ATmega328P-AU is only rated for up to 200mA of current drive capabality you should not activate too many LEDs at the same time.
D1, D2, D3, D4, D5, D6, D7, D8, D9, D10, D11, D12, D13
Thick Film Resistors - SMD 1/8watt 10Kohms 1% 100ppm
R1, R2, R3, R4, R5, R6, R7, R8, R9, R10, R11, R12, R13, R14