Faze4 is open source 3d printed robotic arm that used cycloidal gearboxes and stepper motors.

More info on: Instagram: https://www.instagram.com/5arcrnjak/ Youtube: https://www.youtube.com/channel/UCp3sDRwVkbm7b2M-2qwf5aQ/videos Github: https://github.com/PCrnjak