[Valentin] wanted to experiment with 3D scanning some objects he had around the house, but says he didn’t want to buy a line laser for ... mirror on the actuator arm before firing up his laser.

You’ve built the perfect robotic arm. How do you drive it? If you are [angrymop] you interface a 3D mouse from 3DConnexion ... two lines of output. Each line has a unique identifying byte ...