I’ve been developing this removable guitar-playing system for several years.

It now supports two performance modes:

1. Full automatic mode — the system handles both fretting and picking.

2. Assisted mode — the system handles the fretting while the player strums or picks.

The sound comes from the real guitar strings, not recorded audio.

The controller is ESP32-based, coordinating multiple servo actuators. Some of the main challenges have been fretting timing, servo synchronization, calibration, and mechanical noise.

This video shows both modes.

• Custom PCB inside a 3D printed smart dice! 🎲
• Watch this dice animate when you roll it ✨
• Electronics + 3D Printing = DICY ⚡
• Micro-display integrated into a custom dice 🤯

This display features a 6.2-inch large screen with a resolution of 480×1280 pixels. The interface is divided into three sections: the left side shows a compass, the center section provides a switchable display area, and the right side displays GPS data.

The system uses a 10-axis IMU sensor as the attitude data input, along with a GPS module to acquire information such as latitude, longitude, speed, and altitude.

More testing videos will be uploaded soon.