If you like projects that are equal parts electronics, mechanics and pure chaos, this Arduino-controlled robotic drum is a great one. The build, originally shared on Instructables, turns a standard drum kit into an automated drummer using linear actuators driven by Arduino boards.
The core idea is simple: each drum strike is handled by an actuator and stick assembly, while the Arduino handles timing. Because the hit timing is programmatic, the robot can hold tempo very consistently, ramp BPM up or down quickly, and play repetitive patterns without fatigue.
In the original build, the maker used car door lock actuators as the striking mechanism, paired with Arduino motor control hardware for easier duplication across multiple drums. That modular approach is one of the best parts of the project: once one strike unit works, you can repeat the same pattern for snare, toms or cymbals.
A big chunk of the guide is mechanical construction rather than code. There are bracket "sandwich" assemblies, threaded pipe mounts, stick linkages, and kick/cymbal mounting tweaks to get enough force and reliability from each hit. It is not a tiny weekend breadboard project, but it is very buildable if you work through it section by section.
The result is a drummer that can run like clockwork and makes a brilliant live companion for solo instruments like guitar or synth. If you want to build one yourself, the full walkthrough is on Instructables.