Pololu Micro Maestro 6-channel USB Servo Motor Controller (Assembled) motor_controller and you may need external

and you may need external charging circuit like this one

Piano HAT pinout

A heap of useful (unprotected) 3v3 goodies from the GPIO

Monitoring the digital output pin (D) could know the environment is bright or dark

Instrument cycle button (great for use with synthesizers)

Pololu Micro Maestro 6-channel USB Servo Motor Controller (Assembled) motor_controller and you may need externalThe Micro Maestro is a highly versatile servo controller and general purpose I O board in a highly compact (0. 85"1. 20") package. It supports three control methods: USB for direct connection to a computer, TTL serial for use with embedded systems, and internal scripting for self contained, host controller free applications. The channels can be configured as servo outputs for use with radio control RC servos or electronic speed controls (ESCs), as