he opted to keep it simple with RC servos which produced a nifty solution that we really like. The arm is made out of a series of 3D printed ball joints, allowing rotation in any direction.

Versatile servo arm: 25T aluminum arm included, with 90-120°±2° remote control angle. Robust and reliable: Plastic case with aluminum center band, weighs only 50g.

The arm (the robot arm, not the processor) itself is well done, made from Lego Technic parts and common RC servos. Not that this is the most amazing thing we’ve ever seen built from Technic ...