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Thread: Direct Audio to drive galvo's?

  1. #1
    Join Date
    Nov 2007
    Cairns, Australia

    Default Direct Audio to drive galvo's?

    Just thinking about how the signalling for galvos work, would sending a audio signal into the galvo amps cause the gavlo's to move with the electrical signal from the audio?

    Just a thought

  2. #2
    Join Date
    Jan 2008
    Stockholm, Sweden


    Certainly, that's the way I first ran my scanners. Playing normal music through your scanners can give some interesting visual results, especially with electronic music. Funnily enough, you will be able to hear the music playing through the scanners.

    The problem is that the signal level is very low compared to the +/-5V you typically feed your scanners with, so the image will be small. It is also offset from 0V.

    James Lehman ( is the expert on using sound cards for this though, you should have a look at his posts.

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