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

Back to Subject List

Old thread has been locked -- no new posts accepted in this thread
???
04/29/09 08:02
Read: times


 		 #164926 - How to read and redisplay from LCD databus?
Hi,

I have a circuit board that use 2x16 character LCD (called board A). We want to see whatever show on the LCD of "board A" from a remove board which also has its own 2x16 LCD (called board B).

Therefore, I am thinking of using a micro controller (called board C)that connect to the input pins of LCD "A" (e.g. DB0 - DB7) to read, interpret then transmit the data to the remove board B to re-display.

Is there anyone have any idea about how to do that or having different idea, please?

You may think that's a crazy idea, but it's probably only solution I have since the board A already use RS485 to communicate with A1, A2,... and I cannot feed more data to that COM line.

Thanks,

List of 24 messages in thread
TopicAuthorDate
How to read and redisplay from LCD databus?            01/01/70 00:00      
   Spy on the Data & Control lines            01/01/70 00:00      
      Can be hard to be fast enough            01/01/70 00:00      
   Shouldn't be a problem            01/01/70 00:00      
      some HW might be needed            01/01/70 00:00      
         Monitor the LCD databus then send via 485            01/01/70 00:00      
         I don't see a place for the 805x            01/01/70 00:00      
      Re: Shouldn't be a problem            01/01/70 00:00      
         some basic questions            01/01/70 00:00      
            Re:some basic questions            01/01/70 00:00      
               20 Meters            01/01/70 00:00      
                  Re: 20 Meters            01/01/70 00:00      
      Signal timing and command timing separate issues            01/01/70 00:00      
         Check the datasheet ...            01/01/70 00:00      
            Re: Check the datasheet ... and test on LCD of board B first            01/01/70 00:00      
               A CPLD at each end would do nicely            01/01/70 00:00      
                  Re: A CPLD at each end would do nicely            01/01/70 00:00      
                     it depends on requirements            01/01/70 00:00      
                        Watch out for assumptions about busy            01/01/70 00:00      
                           If that gets to be an issue ...            01/01/70 00:00      
                              slave timing            01/01/70 00:00      
                                 I doubt that will work.            01/01/70 00:00      
   I had done something like this in past            01/01/70 00:00      
      Re: I had done something like this in past            01/01/70 00:00      

Back to Subject List