Arduino Optical/Light Theremin – Make it Yourself! - Codrey Electronics
Theremin World - Open.Theremin.UNO Progress Report
Quick And Easy Arduino-powered Theremin | Hackaday
Starter Kit: Project 6 - Theremin help - Project Guidance - Arduino Forum
How to Make Arduino Theremin -Control Arduino With Proximity - Hackster.io
Arduino Theremin - Make:
Theremino | Arduino Project Hub
Pseudo-Theremin - Invent Electronics Tutorials
Project 6: Light Theremin Error in Arduino Projects Book - The Arduino Starter Kit - Arduino Forum
6 Project "Light Theremin" Arduino StarterKit- Constant, high steady tonee of - Project Guidance - Arduino Forum
Open Theremin
I'm trying to make a simple theremin project with the Elegoo Uno R3 following an online tutorial (link in comments), but there's an error of "redefinition of 'void setup()'", I'm pretty sure