On 9/28/2012 4:41 PM, Matt Pobursky wrote:
> Those look interesting. Did you happen to find any datasheets for those
> parts? Kind of hard to do a PCB layout or write code for them without it.
>
> I just did an online search and couldn't find anything.
>
> Matt Pobursky
> Maximum Performance Systems
>
>


They use the Pt6961 chip and I already have one of them working now.
The code is a bit strange at first but the pinout for the displays=20
looking from the front, is
VSS , Data out, Data In, Clock, Strobe, VCC
I used +5V supply, may work with 3.3V

Pull the strobe high, send a command byte,strobe low,  strobe high, send=20
data byte, strobe low
That does the setup routine
setup sequence is:
0x0c

The digits are accessed slightly different.
Pull strobe high, send digit command followed by digit data, strobe low


Code is below , written with Mplabx and the xc8 compiler

Have fun
Mark


/*
  * File:   main.c
  * Author: Mark Hanchey
  *
  * Created on September 28, 2012, 10:02 PM
* Sample code for driving PT6961 LED display
* Using Pic18F4520 @ 8Mhz
  */

#include <p18cxxx.h>
#include <xc.h>
#include <stdio.h>
#include <stdlib.h>

#pragma config OSC=3DINTIO67, WDT=3DOFF,MCLRE=3DON
#pragma config DEBUG =3D OFF ,LVP =3DOFF
#pragma config PWRT=3D OFF
#define _XTAL_FREQ 8000000
#define STB LATDbits.LD0
#define DIO LATCbits.LC5
#define CLK LATCbits.LC3

void delayMs(int x)              // MS delay
{
int i;
     for (x ;x>0;x--)
     {
     for (i=3D0;i<=3D110;i++);
     }
}


void Write_6961_data(int temp)
{
     int i;
     for(i=3D0;i<8;i++)
     {
        DIO=3Dtemp & 1;
        temp>>=3D1;
        CLK=3D0;
        CLK=3D1;
     }


}



void Write_6961_cmd(int cmd)
{
      STB=3D1;DIO=3D1;CLK=3D1;
      STB=3D0;

     Write_6961_data(cmd);
}

void Set_6961(void)
{
     Write_6961_cmd(0x02);

     Write_6961_cmd(0x40);

     Write_6961_cmd(0xc0);

     Write_6961_cmd(0x8f);


}


int main(int argc, char** argv) {
     const char DISP[]=3D{0x3f, 0x06, 0x5b, 0x4f, 0x66, 0x6d, 0x7d, 0x07,=20
0x7f, 0x6f, 0x77, 0x7c, 0x58, 0x5e, 0x79, 0x71,0x80};
     TRISC =3D 0;
     TRISD =3D 0;
     Set_6961();

      while(1){

   for(int i=3D0; i<17; i++){

      Write_6961_cmd(0xC0);
      Write_6961_data(DISP[i]);
      Write_6961_cmd(0xC2);
      Write_6961_data(DISP[i]);
      Write_6961_cmd(0xC4);
      Write_6961_data(DISP[i]);
      Write_6961_cmd(0xC6);
      Write_6961_data(DISP[i]);
      delayMs(10);
    }
    }


     return (EXIT_SUCCESS);
}





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