Think about a piano that has no keys, makes some tone from movement of hand. That’s what this project is all about.
The micro:bit has an accelerometer and a magnetometer. By moving the board 360 degree round and upward/downward can be sensed with these sensors. There are block functions to generate square waves and showing text on 5X5 matrix. By adding an external speaker/buzzer/peizo tone can be created. Combining all these an air piano can be realized.
Stop breadboarding and soldering – start making immediately! Adafruit’s Circuit Playground is jam-packed with LEDs, sensors, buttons, alligator clip pads and more. Build projects with Circuit Playground in a few minutes with the drag-and-drop MakeCode programming site, learn computer science using the CS Discoveries class on code.org, jump into CircuitPython to learn Python and hardware together, or even use Arduino IDE. Circuit Playground Express is the newest and best Circuit Playground board, with support for MakeCode, CircuitPython, and Arduino. It has a powerful processor, 10 NeoPixels, mini speaker, InfraRed receive and transmit, two buttons, a switch, 14 alligator clip pads, and lots of sensors: capacitive touch, IR proximity, temperature, light, motion and sound. A whole wide world of electronics and coding is waiting for you, and it fits in the palm of your hand.