Charlie-plexing


Results 1 to 40 of 60

Thread: Charlie-plexing

Threaded View

  1. #1
    Join Date
    Jan 2005
    Location
    Montreal, Quebec, Canada
    Posts
    2,597

    Default Charlie-plexing

    The need to control a lot of LEDs arose in my residential alarm project, the most efficient I could google was charlie-plexing. I thought I'd share a chart showing combinations:

    EDIT: MUST USE 1 RESISTOR PER PIN

    Name:  CharliePlex.GIF
Views: 4154
Size:  18.3 KB

    Robert


    Reference: http://ww1.microchip.com/downloads/e...Doc/40040b.pdf

    EDIT: Even better reference courtesy of Charlie, clearly explains the technique:
    http://www.instructables.com/id/Char...s--The-theory/

    Skip down to working code and videos:
    http://www.picbasic.co.uk/forum/show...132#post130132
    Last edited by Demon; - 18th December 2014 at 06:25. Reason: Added information

Members who have read this thread : 3

You do not have permission to view the list of names.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts