Is It Possible To Control A PowerPoint slide show with VBA via USB port
I am looking at the possibility of controlling a PowerPoint 2010 slideshow using VBA to pick up control signal to advance the slides via the USB port. The control signal would come from a 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 into the USB port of 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 USB port state using VBA in PowerPoint?
Thanks in advance.