Warning! This board hasen’t been tested yet, there might still be issues that needs to be addressed. Watch out for future revisions!

Note (180314): A previous and tested version of this design is available here: https://oshpark.com/shared_projects/wrF9XJDk

The quick and dirty mockup code is available here: https://github.com/overengen/Pedestrian_Crossing_for_the_RPi

The pin layout has been changed in this later revision of the PCB, but this is easily corrected in the program by swapping out a few numbers accordingly.

Update: v0.5 - Adjusted position af the mounting holes and dimensions around the corners that was slightly of and smaller in arc.

Update: v0.4 - Rearranged som of the graphic, redesigned the wiring and pinout to make them follow a more logical order and easier to use while programing.

GPIO Reference:

P20 - Red 10mm

P21 - Yellow 10mm

P22 - Green 10mm

P23 - Red 5mm

P24 - Green 5mm

P25 - White 3mm

P26 - Switch

P27 - Buzzer

This is my first attempt to design a PCB for the Raspberry Pi. It’s a dead simple design and supposed to fit on top of a Raspberry Pi (65x56.5mm). With a bit of coding the Raspberry Pi should be able to control all the LEDs, the buzzer and read the push button. My intention is to use this as a base for a coding project at school. Pin numbers (connecting to the switch, the buzzer and the LEDs) are written on the surface of the PCB as a reference in order to make coding a bit easier.

BOM:

3 x 10mm LEDs (red, yellow, green).

2 x 5mm LEDs (red, green).

1 x 3mm LED (yellow or white).

1 x Switch 4pins, 6mm.

1 x Buzzer

6 x Resistors (~50 Ohm)

1 x Connector (20x2)