An Arduino Nano is the heart of the build, paired with a shield that lets it run a number of servo motors. The servos, one per key, are each assembled into a 3D-printed bracket with a cam-driven ...

The Nano ESP32 supports both Micropython and Arduino programming languages, providing a clear path for those already familiar with one platform to easily switch back and forth as needed.

An Arduino Nano or a Micro might be the best options If a small board sounds like the most appropriate choice.

The Raspberry Pi Pico is both faster and cheaper than the Arduino Nano, but the nano has better resources and community.