Electronics Design & Production

For these 2 weeks, I wanted to build a sound synthesizer that would work when I completed the circuit with my body. I also wanted to produce a PCB of a custom hand-drawn design.

Prototype with Breadboard

Make a prototyping board:

PCB design

Make the schematic. Make own symbol + footprint for BOB-11570:

v2: Hand-drawn!

I printed all the footprints on the piece of paper with a regular printer, making sure that all dimensions remained the same. Then I drew parts and connections by hand.

I converted JPG to SVG, and overlaid it with the original parts to ensure the right scale.

Final results. The interaction works great, I can measure the gradual drop in voltage whenever I touch two fingers of the device. I will try to learn the audio library Mozzi and turn this little PCB into a sound synthesizer in the future!