Help with wireing a 44780 (URGENT!)

ChristianW · Post by **ChristianW** » Tue Feb 19, 2002 10:29 am

http://www.rendo.dekooi.nl/~fjbgp/smart ... onnect.jpg

I want to wire mine like that (with the software backlight on off) but mine has no (-) for the backlight. Only (+). (It has 15 soldering points and right now just a resistor from pin 2 to 15)

Can someone help me?

Christian...

Post by **Henry** » Tue Feb 19, 2002 10:49 am

Please note, this is a Matrix Orbital forum. We have it here for Matrix Orbital customers. We provide this service free of charge for our customers or potential customers to share ideas and support.

ChristianW · Post by **ChristianW** » Tue Feb 19, 2002 1:22 pm

I know. I'm planning on purchasing a MO gfx LCD sometime in the future. But right now I just want to get this one working. And besides, it's the only msgboard for LCD's around. (Not counting EIO)

Maybe you should make a forum called "Non MO products" or something?

Christian...

Post by **Henry** » Tue Feb 19, 2002 1:32 pm

On 2002-02-19 13:22, ChristianW wrote:
I know. I'm planning on purchasing a MO gfx LCD sometime in the future. But right now I just want to get this one working. And besides, it's the only msgboard for LCD's around. (Not counting EIO)

Maybe you should make a forum called "Non MO products" or something?

Christian...

But why should we spend money, time and resources on something that will take business away from us?!? It's like AMD having a Intel/Cyrex forum on their site. The reason a person buys a LCD froum us is for the support. If we started to do a EIO style we would let users fend for them selfs and that's not what we want to do.

_________________
Henry J.
Technical Support
Matrix Orbital

<font size=-1>[ This Message was edited by: Henry on 2002-02-19 13:32 ]</font>

sygyzy · Post by **sygyzy** » Tue Feb 19, 2002 11:55 pm

I have a MO product. How are my screws and spacers coming along Henry

?

Post by **Henry** » Tue Feb 19, 2002 11:56 pm

On 2002-02-19 23:55, sygyzy wrote:
I have a MO product. How are my screws and spacers coming along Henry ?

Being mailed tomorow

sygyzy · Post by **sygyzy** » Wed Feb 20, 2002 8:18 pm

You rock!

Post by **Henry** » Wed Feb 20, 2002 8:24 pm

On 2002-02-20 20:18, sygyzy wrote:
You rock!

I know

hehehe... I sent you several things, you will have to let me know what works out for you...

sygyzy · Post by **sygyzy** » Fri Feb 22, 2002 10:59 pm

You did indeed. I don't know what order they are supposed to be in. What are the black washers for?

Post by **Henry** » Fri Feb 22, 2002 11:32 pm

the black ones are just a different thickness, more or less see what works for you

mserrino · Post by **mserrino** » Sat Feb 23, 2002 3:43 pm

hehe....I've always wanted to go over to cf's forum and post questions about MO lcds for shits and giggles

Also, OT, but henry what are the chances of me getting a mounting kit for one of your 2x40 or 4x40 LCDs? Not the drive bay as I know they're too big, but just the black overlay part?

Post by **Henry** » Sat Feb 23, 2002 4:57 pm

ummm, none... we don't have them for that size... all I would be able to give you is a diagram of where the holes are... (I bet this is for your 4x40 // you just got eh?)

sygyzy · Post by **sygyzy** » Sat Feb 23, 2002 9:12 pm

Okay some interesting news for both you and customers.

You sent me two sized screws. Large = same size as the mounting kit ones but SLIGHTLY larger in diameter. And small = shorter ones. I also got some spacers that are the same height but much bigger width/diameter. And finally some black washers that fit perfect with the larger screws.

Remember now the problem we have is that when you put the filter on, it adds a few mm of spacing. So without the filter it looks like

Nut
White Washer
PCB
PCB
Screen
Spacer
Screw Head (Threads going up)

With the filter it goes
Nut
White washer
PCB
PCB
Screen
Filter
Spacer
Screw Head (Threads going up).

The problem is the filter renders the spacer useless. The spacer literally has nothing resting on top of it since the VFD rests entirely on the filter. That's a no no since it's uncessary weight. So what do we do to combat this? Two things, we need TALLER spacers and taller screws. Didn't get either.

But no worries. We'll make due. I took the black rubber washer and inserted them on top of the old spacer. This put (what seems like) just enough spacing to take the weight off the filter

Nut
White Washer
PCB
PCB
Screen
Filter
Black Washer
Spacer
Screw Head

The only remaining problem is we added both a filter and black washer and used the same length screw. The result? There is about 3-4 lines of threading that you can go into. The nut takes two lines so you are left with basically nothing to screw into which makes the whole setup kind of wobbly.

I appreciate your help Henry. Definitely top notch service, but MO should probably figure a better solution for future VFD+Filter customers.

If anyone is interested in pics, tell me and I will take them. The difference IMO is that the display is sharper but less bright. I got blue btw.

mserrino · Post by **mserrino** » Sat Feb 23, 2002 9:50 pm

On 2002-02-23 16:57, Henry wrote:
ummm, none... we don't have them for that size... all I would be able to give you is a diagram of where the holes are... (I bet this is for your 4x40 // you just got eh?)

actually I haven't got it yet, but it is on its way. Got it from linuxcentral, its actually the second MO I bought from them (I have the 20x2 pc bay one) and let me tell you they are an excellent distributor of your products.

Also, the diagram of the 4x40 would be awesome, that way I could use it as a template.

<font size=-1>[ This Message was edited by: mserrino on 2002-02-23 21:53 ]</font>