The setup
I've bought a pair of cheap speakers and pulled the cones out of them. One of the cones was accidentally destroyed (seen in the background in the process, so I've replaced it with a spare. THe mirrors are attached to the edges and centers of the cones, one horizontal (seen) and one vertical. This allows horizontal and vertical scanning control via stereo sound.
In this picture, my speakers are already aligned and there's a paper screen. Unfortunately my laser pointer ran out of juice as I got this working, so further testing will have to wait for a week. I'm also concerned that I didn't put as much weight on my mirrors as I should have - the beam reflection spreads a bit too much. Just a warning from testing with my laptop: the speakers WILL NEED AMPLIFICATION. Not sure of details on that yet, because my pointer isn't working to test it, but the mirrors definitely aren't moving enough. When I can work on this next, I'll try cutting out the speaker cones and see if I can squeeze a little better movement out of it without amplification.
In this picture, my speakers are already aligned and there's a paper screen. Unfortunately my laser pointer ran out of juice as I got this working, so further testing will have to wait for a week. I'm also concerned that I didn't put as much weight on my mirrors as I should have - the beam reflection spreads a bit too much. Just a warning from testing with my laptop: the speakers WILL NEED AMPLIFICATION. Not sure of details on that yet, because my pointer isn't working to test it, but the mirrors definitely aren't moving enough. When I can work on this next, I'll try cutting out the speaker cones and see if I can squeeze a little better movement out of it without amplification.
posted by Merlz at 6:10 PM
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