Nielsen Speaker is a Toy Guitar Motor Controller Spinning Speakers Synthesizer #circuitbending
Alec Smecher assembled this project that produces synthesizer sounds with spinning speakers attached to a motor controller operated by a toy guitar:
Motor controllers and their matching motors make neat (often octave-ish) noises. In essence, a motor driver is a synthesizer of sorts.
Motor drivers are basically the same as amplifiers.
Plastic toy guitars are often horrible anti-instruments and need rehabilitation.
I’ve always had a soft spot for the Leslie speaker.
He walks through the build process in the first part, with the spinny sounds bits beginning around 3:45:
Make a robot friend with Adafruit’s CRICKIT – A Creative Robotics & Interactive Construction Kit. It’s an add-on to our popular Circuit Playground Express, FEATHER and other platforms to make and program robots with CircuitPython, MakeCode, and Arduino. Start controlling motors, servos, solenoids. You also get signal pins, capacitive touch sensors, a NeoPixel driver and amplified speaker output. It complements & extends your boards so you can still use all the goodies on the microcontroller, now you have a robotics playground as well.