I want want a laser projector http://hackaday.com/2017/03/08/light-replaces-electrons-for-giant-vector-graphics-asteroids-game/#more-247247
I once lived near Archway tower in London and wanted to laser project Tetris on to the building from our roof.
I once lived near Archway tower in London and wanted to laser project Tetris on to the building from our roof.