2014-08-03, 09:35 #1
- Join Date
- Apr 2003
- Thanked 0 Times in 0 Posts
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.
Subscribe to our Windows Secrets Newsletter - It's Free!
Get our unique weekly Newsletter with tips and techniques, how to's and critical updates on Windows 7, Windows 8, Windows XP, Firefox, Internet Explorer, Google, etc. Join our 480,000 subscribers!
+ Get this BONUS — free!
Get the most of Excel! Learn about new features, basics of creating a new spreadsheet and using the infamous Ribbon in the first chapter of Excel 2013: The Missing Manual - Subscribe and download Chapter 1 for free!
2014-08-03, 20:12 #2
- 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 http://www.supportforums.net/showthread.php?tid=11922Andrew Lockton, Chrysalis Design, Melbourne Australia