Dot Matrix LCD Pinout

Discussion in 'Electronics Resources' started by Arzulia, Feb 2, 2010.

  1. Arzulia

    Thread Starter New Member

    Nov 26, 2009
    5
    0
    I bought a bunch of these exact LCDs a few years ago. http://www.wellgainelectronics.com/alpsnea02151aa.aspx

    I've been going crazy looking everywhere for a datasheet for it so I can actually use them now. I can't find any information on them anywhere except some ebay users who are selling some. I've contacted them all and none of them have a copy of the datasheet or information on how to interface tot he device.

    If anybody has the datasheet or could steer me in the right direction to figuring out the 18 pin cable I would be immensely grateful.
     
  2. mik3

    Senior Member

    Feb 4, 2008
    4,846
    63
    Contact the manufacturer.
     
  3. Arzulia

    Thread Starter New Member

    Nov 26, 2009
    5
    0
    I tried contacting ALPS about it, whom I believe is the manufacturer of it all. Their response was that they had no information on the device. :(
     
  4. mik3

    Senior Member

    Feb 4, 2008
    4,846
    63
    Try to find the manufacturer otherwise buy other LCD modules.
     
  5. Arzulia

    Thread Starter New Member

    Nov 26, 2009
    5
    0
    I'm pretty sure I already contacted the manufacturer, as I said, unless it's not the one whose name is all over the board. I haven't been able to find information saying otherwise though.

    As for buying another LCD. I appreciate that your responding to me at all, but that's kind of useless. I said I already have these, and that I'm trying to figure out how to use them. I sincerely mean no offence, but telling me to give up and buy something else is a worthless statement.

    A friend of mine suggested using a multimeter to see which pins of the cable are connected to which pins of the chips on the board and looking up the individual chips. Sounds kind of insane but I might give that a try in the meantime.

    I would still greatly appreciate any actual advice.
     
  6. mik3

    Senior Member

    Feb 4, 2008
    4,846
    63
    Your friend is right. You can identify the pins of the module according to the LCD drive chip (if possible). If you do it correctly it will not blow up. :p
     
  7. Arzulia

    Thread Starter New Member

    Nov 26, 2009
    5
    0
    As it turns out after ripping the screen apart, there is no chip on it at all. So I guess whatever driver this thing would need is not included. :confused:

    So I think I might be screwed and have bought all these displays for nothing. :(
     
  8. mik3

    Senior Member

    Feb 4, 2008
    4,846
    63
    Can you post some picture of the displays?
     
  9. spinnaker

    AAC Fanatic!

    Oct 29, 2009
    4,884
    1,005
    There is a link in his first post. The link has pictures.
     
  10. spinnaker

    AAC Fanatic!

    Oct 29, 2009
    4,884
    1,005
    Have you tried contacting Well Gain? Maybe they have a datasheet?
     
  11. mik3

    Senior Member

    Feb 4, 2008
    4,846
    63
    ALPS does not manufacture displays. I think the seller is not someone you can trust.
     
  12. Arzulia

    Thread Starter New Member

    Nov 26, 2009
    5
    0
    The only image is available in the link I gave, but I will provide a higher quality version. It is the best that my digital camera could take: http://www.metametrics.ca/images/display-back.jpg
    The top cable is 4 output lines for x/y coords of the touchscreen. The other cable is supposed to power and control the display, it has 18 pins.

    Yes I have, and unfortunately they had no information to give.

    I'm not really sure what seller your refering to. Maybe Well Gain Electronics? I didn't buy it from them, nor did they give me any information though. My assumption that it was designed by ALPS is because "ALPS" is stamped on the boards.
     
  13. R!f@@

    AAC Fanatic!

    Apr 2, 2009
    8,754
    760
    I think U can get the onboard LVDS drive chip no. by desoldering the cable that connects the two board and lifting the upper board.
    I have seen these, the chip is on the underside of the TOP board.
    Give it a try, but be careful as the cable connecting the front panel to IO LVDS board is quite fragile.

    Rifaa
     
Loading...