Automatic Guitar Tuner made for a Electrical Engineering Design Project at Washington University. Tuner is controlled via an iOS app. Hardware built with an arduino and a stepper motor.
The app is pretty useless without the hardware. It all can be purchased for under $40(assuming you have access to a 3D printer).The components are:
- Arduino Uno
- Tuner Clip ( .cad available in source)
- 3.5mm audio cable
- BYJ48 Stepper Motor
- ULN2300 Motor Driver
- IRF640 Transistor