Many moons ago Ray Wilson and Ron Romeo created a small company that sold PC boards and kits. We called it “Waveform Processing” The WP-20 Mini-Synth was our premier product. As I look back at it now I see many things I would do differently today but I wanted to leave it as it was 25 years ago. It’s a great project and it makes some very cool sounds. I hope you have fun if you decide to build it. This would make a great junior-high or high-school electronics project.