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This blog post is a very detailed writeup of some A4988 stepper motor driver heatsinking experiments.
This small hexapod using the Micro Maestro is controlled remotely using a Bluetooth module. Very detailed build information is available in this blog post.
This art installation by Matthew Richard uses 10 OctoBrite DEFILIPPI modules, 80 RGB LEDs, 40 servos, 7 servo controllers, and an Arduino.