Email: Password: Remember Me | Create Account (Free)

Back to Subject List

Old thread has been locked -- no new posts accepted in this thread
???
07/21/08 13:48
Read: times


 		 #156894 - Probably missing some problem
Responding to: ???'s previous message
I haven't tested colors, but intensity + scrolling + multiplexing + "effects" with a maximum of 960 * 32 diodes (only 240*32 connected - the rest of the bits sent out into the void).

But I'm probably missing something. The only really problematic thing for the software in regards to multiplexing is to adjust the intensity of individual diodes - something that I can't see easily solved with any other drive method, unless I have the advantage of having a single processor pin / LED.

A longer shift register would still require "over-sampled" data to make some characters light more or less, or are there shift registers that takes more than one bit/LED?

I just got my hands on a single-color 17280 LED multiplexed sign that I have to figure out something nice to do with. Vertically mounted it would be a quite big Tetris.

List of 35 messages in thread
TopicAuthorDate
Interfacing an LED grid to the 8051...            01/01/70 00:00      
   here            01/01/70 00:00      
   Clarify            01/01/70 00:00      
      That's how it is done!            01/01/70 00:00      
         and - most important            01/01/70 00:00      
      To clarify further...            01/01/70 00:00      
         LED Matrix            01/01/70 00:00      
            Can you please tell me            01/01/70 00:00      
               Advantages            01/01/70 00:00      
                  Thanks a lot, will get back to you            01/01/70 00:00      
                     series OC driver            01/01/70 00:00      
                        why not use the right thing            01/01/70 00:00      
                           If            01/01/70 00:00      
                              still, the right thing does it all, why wrestle ..            01/01/70 00:00      
   ABOUT THE LED            01/01/70 00:00      
      Please, no SMS            01/01/70 00:00      
      ABOUT THE LED already responded to            01/01/70 00:00      
         Using 10 Dot Matrix Display's            01/01/70 00:00      
            indoor or outdoor?            01/01/70 00:00      
               a brightness issue            01/01/70 00:00      
                  Indoor            01/01/70 00:00      
                     it depends            01/01/70 00:00      
                        Just tested            01/01/70 00:00      
                           I would not            01/01/70 00:00      
                     should, no - could, yes            01/01/70 00:00      
                        Thanks            01/01/70 00:00      
                           I have inherited a sign that multiplexes ....            01/01/70 00:00      
                              Why the dislike            01/01/70 00:00      
                                 well, my 'dislike' comes from            01/01/70 00:00      
                                    Probably missing some problem            01/01/70 00:00      
                                       no such advantage needed            01/01/70 00:00      
                                          The same way, with the same amount of work?            01/01/70 00:00      
                                             not really            01/01/70 00:00      
                                                Have to fight more with this later            01/01/70 00:00      
                                                   I do 16            01/01/70 00:00      

Back to Subject List