openlase

There's openlase https://github.com/marcan/openlase with which you can use the audio output through amplifiers to control galvos of a laser projector. About 10 years ago a buddy of mine built a home-made RGB laser projector, using a red, green and blue lasers, and dichroic mirrors, and managed to drive it with MAME to run battlezone and some other vector games. The laser projector itself is quite dangerous, and we're probably lucky we didn't end up blind, so I wouldn't really advise doing this. Battlezone: https://www.youtube.com/watch?v=S2JKr-Vkz8A SEGA Star Trek: https://www.youtube.com/watch?v=VBALyh1hw5Y Short clip of the home-made laser projector: https://www.youtube.com/watch?v=-aV0RRmO4gI Simple rotating cubes demo: https://www.youtube.com/watch?v=OHbsrLW-iag Running Word War vi via the laser projector: https://www.youtube.com/wat

Reminds me of OpenLASE: - https://github.com/marcan/openlase - https://www.youtube.com/watch?v=hoWCNKhZCbk

Word War vi[1] is a little game I made long before the laser projector, and we were looking for things to do with the projector, so I converted word war vi to be able to use it. You can look in the commits here to see how MAME is hooked to the projector. https://github.com/jv4779/openlase-mame/commits/master I believe the jist of it is MAME already has to start with lines meant for a vector display and rasterize them one way or another for a modern computer. Before this happens, the data can sent to the openlase library[2] which generates signals on 5 channels of audio: 2 channels for control of X and Y galvos, and 3 channels for red, green, and blue laser power control. These signals then get sent to amplifiers and then to galvos and laser controls. [1] http://smcameron.github.io/wordwarvi/ [2] https://github.com/marcan/openlase