You need

An old PC Any model of Pi Zero Micro USB lead Minimum 4GB USB flash drive

An RGB LED (common cathode)

5x female-tomale jumper wires

1x male-to-male jumper wire

1x 330 Ohm resistor (orangeorange-browngold) 1x Push button A breadboard All of the Python code and a highresolution diagram can be downloaded from https:// github.com/lesp/ LXF235-GPIO_ Expander/archive/ master.zip.