LED Interactive Copper Etching

I created this project as a nice memento to mark the birth of my little boy. After experimenting with a copper etching of his newborn hands and feet, I decided to take it a bit further and add electronics. Each hand and foot etched from a copper PCB forms a capacitive sensor plate. An arduino measures differences in charge on each plate caused by the presence of a human hand. Depending on the relative ‘signal’ detected on each plate, the arduino alters the colour of 4 RGB leds set behind the board. This is kind of a proof of concept ible. I’ll talk you though what I did, but hopefully this will inspire others to modify my idea and come up with something unique.”