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  1. #1
    New Lounger
    Join Date
    Apr 2003
    Thanked 0 Times in 0 Posts

    Question Can I read the USB port state using VBA within PowerPoint 2010 to trigger slide advance?


    I am looking at the possibility of controlling a PowerPoint 2010 slideshow using VBA to pick up a trigger signal to advance the slides via the USB port. The control signal would come from an analogue reel to reel tape recorder via a switching circuit.

    Same idea as using a tape recorder and a slide synchroniser to trigger a 35mm slide projector.

    The show would use a four channel reel to reel tape recorder;

    • • tracks 1 & 2 for music background,
    • • track 3 for commentary
    • • track 4 for the synchronising signal

    Tracks 1, 2 & 3 would be mixed live into the amplifier system and the track 4 synchronising pulse would be fed into the USB port of the laptop containing the PowerPoint slideshow.

    I envisage the pulse signal could interface to the USB port using a CMOS logic gate chip.

    The question is; Can I read the state of a USB port using VBA in PowerPoint?

    Thanks in advance.

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  3. #2
    Super Moderator
    Join Date
    Jan 2001
    Melbourne, Victoria, Australia
    Thanked 143 Times in 136 Posts
    I really have no idea on how you would do this. I have never seen a topic on this forum that has posed such a question either so I don't know if anyone who might read this would be able to help.

    Perhaps this link is useful to get you started
    Andrew Lockton, Chrysalis Design, Melbourne Australia

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