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Datavision 160x160 Dot Matrix LCD DG-16160-11-S1FTLY

it's a sed1335f controller that I just can not to seem to get to work at all. The best I get is flickering black lines up and down the display when using hypelcd or LCD studio. I've tried several wiring schemes and nothing seems to work for me. Any help would be appreciated

Here is a link to the data sheet

http://personal.nbnet.nb.ca/dunnbarr//DG-16160-11-S1FTLY.PDF

Can you post how you have yours connected? That would help quite a bit.

j1
LCD --- PP
1------- 1
2-------17
3-------14
4-------16
5------ +5 ( 10k resistor)
6-13 == 2-10 data pins

J2
LCD
1-------Ground
2------ +5v
3--------- negitive voltage (-12)
4--------whipper on pot other end of the pot goes to ground
5------- +5
6and7 LED power and ground

For data pins, I'm sure you just meant (lcd)6-13 to (PP)2-9...no connection on pin 10. For you J2 connection pin 1 (ground), what do you have that going to on the PP? Pins 18-25 should be grounded on the PP, and tied to pin 1 on J2.

On your contrast adjust, what do you have the other sides of the pot tied to? They should be VCC(pin2) and VLCD(pin3). Does your LCD have an onboard negative voltage generator? Or did you already have a circuit to generate the -12vdc?

Check all that first.

Wiring looks correct, Make sure it's good, use a multimeter to check the connections. Can you adjust contrast?
Also i assume that you have configured LCDHype / LCDstudio to match your wiring scheme.

_________________
My Plexeon-Insane LCD!-Or this one!-LCDinfo-LCDStudio

I think I am going to put this display aside for now, but would like advice on whitch of these two displays would be the simplest to connect?


http://cgi.ebay.ca/ws/eBayISAPI.dll?Vie ... %3AIT&rd=1


or


http://cgi.ebay.com/ws/eBayISAPI.dll?Vi ... 7511835034

All of them will pretty much require the same amount of time and effort to connect. Don't give up so easily on your DataVision
You'd still have to check everything just mentioned previously, regardless of what kind of LCD you have or plan on getting. Think of it this way, yours already has a controller built in....a lot of them don't.

Truthfully I think I have borked the display, I don't even get the blacklines anymore.

Edit, I got the test on the sed 1335 driver on lcd studio to output a black screen on the LCD but I still can't get data outputed to the screen.

Indeed don't give up on it. As it appears that you get unpredictable results when hooking it up i do suspect some wiring error, relax and re-wire the lot !
Can you adjust the contrast or not?
Black lines across the screens are typical SED1335 symptoms, doesn't mean it's borked.
edit: those 2 ebay LCD's are nice but quite expensive IMHO

_________________
My Plexeon-Insane LCD!-Or this one!-LCDinfo-LCDStudio

I can't adjust the contrast at all it seems. I will take it apart and rewire it compleatly and let you know if it helps or not.


any hints on where to get LCD's like those on ebay but less expensive?

Abby_Normal...

O.k., I went and bought some of these displays off of Ebay ($10/ea with a controller on board is a pretty good price )

I hooked mine up like yours, didn't even bother with LPT 18-25, with my VLC voltage of -20vdc (you stated -12 in yours...don't think that's enough) with the contrast adjustment going to VLC, center to Contrast and other side of pot to VDD (+5vdc). I used maxim's MAX637 for the negative voltage generation and followed their example right on page 1 of the datasheet. You could request free samples of this IC from them (make sure you request the MAX637 which gives you -15v).
http://www.maxim-ic.com/quick_view2.cfm/qv_pk/1381

Here are some pics...

lights on

lights off

Here is the negative voltage power supply breadboarded together

Hope this helps a little.

Abby_Normal, were you able to try this out?

Not yet, still waiting for the chip to arrive

Hi everybody. I'm new to this message board. I recently bought a graphics LCD controller off of ebay with the sed1335 controller on board. It seems to be the exact same one mentioned in this list. I was able to get the contrast working and the backlight works well. That is the extent of the success I had.

Mainly, I'm unsure on how to initiallize and write data to it. I am having trouble understanding how to calculate the TC/R value for the init sequence. If anyone has some working code, perhaps just a Hello World program, could you please post it here. Thanks a bunch in advance.

Matthew

Why bother writing the code when Henri has done such a wonderful job with LCDinfo

If you really are looking to write your own stuff, you may want to start here instead:
http://forum.lcdinfo.com/viewforum.php?f=9