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erco wrote: »
Great Darth project, JonM! Tweak it a bit for Christmas! :)
localroger wrote: »
The spinning laser rig is basically a light spirograph. It makes trippy patterns you don't have much control over. It is a neat thing though, easy to build and fun to play with. I left mine with a *cough* party in the late 1990's and they ran the battery down watching it on what I was assured were a wide array of psychedelic assistants. All you have to do is mount a mirror on the shaft of a DC motor slightly tilted, so that if a beam hits it the reflection will spin. Aim the laser at two or three of them in succession and you get neat patterns on the wall.
If you want to make deliberate patterns it gets expensive fast, and if you want to make those patterns in colors it gets like five figures expensive even at the hobby level. Again it's not so much the lasers; lasers are cheap now, even RGB lasers, even high power lasers that can cut holes in cardboard. What's expensive now is the steering controls. The hardware for that hasn't changed much since 1990; it was expensive then, and it still is. The lasers are cheaper and the computer to run the show are cheaper but whipping those mirrors around in milliseconds in a guided manner still requires some pretty nontrivial hardware.
Carol Hazlett wrote:
... Brainiac. ...