Large-scale laser shows require a lot of gear, of course, but that doesn’t mean you can’t get in on the fun yourself using something like this homebrew X-Y laser projector.

The 35 laser modules are arrayed in a 5 x 7 matrix, slotted into basic PCB board. Each is wired up to a microcontroller – in this case a PIC16F722, though an Arduino would do nicely too – via ...

If you fancy building your very own robot, you may be interested in a new project tutorial that allows you to create an Arduino-based delta robot with Delta 3D printer.