ChordCube
ChordCube is a music cube for little kids. Each face is numbered like a die, and each one has its own note, its own colored light, and its number in Braille. An accelerometer inside works out which face is up, and that face lights up and plays. Tip it onto an edge and it plays a chord.
One button switches between one note at a time and chords. The other drops every note down a third, so a group of kids can play harmonies together.
- Patent
- US 12,745,033 B1
- Title
- Accelerometer-Based Audio Signal Generator
- Filed
- Oct 30, 2025
- Issued
- Sep 22, 2026
- Claims
- 20
- Inside
- Arduino Uno, MPU-6050, Mozzi
Drag the cube to spin it around, or press Use tilt on a phone. Press Play to hear it. With Multi note on, tip it onto an edge or a corner to play two or three faces at once.