There’s many complex systems for automatically pointing a telescope at an object ... and PC fully isolated from the motor circuits. but lets the Arduino take control of the mount.

Adafruit’s stepper motor controller boards provide the drive from an Arduino. The bottleneck in all of this is the i2C link with control of 6 steppers limiting the overall speed of the platform.

ClearCore CLCR-4-13 is an industrial IO and motion controller that can be programmed using the Arduino IDE. It handles up to four axes of step-and-direction motion control (500kHz max step rate), and ...