Shop OBEX P1 Docs P2 Docs Learn Events
Trying to communicate with an LCD0821 rev 2.0 — Parallax Forums

Trying to communicate with an LCD0821 rev 2.0

Turnbull2112Turnbull2112 Posts: 65
edited 2011-01-02 13:58 in BASIC Stamp
Has anyone tried to use the LCD0821rev 2.0 with a BS2? There isn't any sample code available as far as I could find and I'm having issues trying to communicate. I'm using the three pin connector for what I believe is TTL. Should I be using the four pin connector?? Any help or example/direction to get me started would be greatly appreciated. Thanks,

Comments

  • FranklinFranklin Posts: 4,747
    edited 2010-12-31 14:41

    the rs-232 connector on the pc cable is wired so that a standard “straight through” serial cable may be
    used to connect the module to a standard serial port such as com ports on pcs. Note that this device
    complies with the eia232 standard in that it uses signal levels from ± 3v to ± 12v. It will not operate
    correctly at ttl (0 to +5v) levels.


  • Turnbull2112Turnbull2112 Posts: 65
    edited 2011-01-02 09:05
    There is example code on their website for use with the BS2, I assume there is a way to communicate with the LCD as is. I think my issues are jumper configuration etc.
  • $WMc%$WMc% Posts: 1,884
    edited 2011-01-02 09:32
    Turnbull2112 wrote: »
    There is example code on their website for use with the BS2, I assume there is a way to communicate with the LCD as is. I think my issues are jumper configuration etc.
    '
    Can you post the code your using?
    '
    '
    here's the link to the LCD0821
    http://www.matrixorbital.ca/manuals/LCDVFD_series/LCD0821/LCD0821
    _rev_20.pdf for the LCD0821 PCB 2.0 manual.
  • FranklinFranklin Posts: 4,747
    edited 2011-01-02 13:58
    Have you made the changes required to communicate with the module using TTL and a correct baud rate? What baud rate are you using and, as $WMc% asked, can you post your code (use the CODE tags in the advanced post window)
Sign In or Register to comment.