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Topic: new life for an old lcd display (Read 1 time) previous topic - next topic

schiller

Jan 17, 2013, 10:26 pm Last Edit: Jan 17, 2013, 10:32 pm by schiller Reason: 1
hi there,

i just recovered an old lcd display from a broken master keyboard.
Any suggestion about how to make it work with arduino?

I mean, do you think i just need to write some code, a breadbord to plug lcd pins to Arduino or would it be necessary a "serial input/output common-cathode display drivers" like max 7219?

pics attached..

Thanks in advance..


MAS3

#1
Jan 17, 2013, 11:39 pm Last Edit: Jan 21, 2013, 11:43 pm by MAS3 Reason: 1
Those pics don't show anything worthwhlie.
Except for the headers.
I can count 8 pins but am guessing it's 2 rows of 8 so 16 pins.
There's no clue as to any chips on your pcb (or epoxy drops, meaning a chip glued forever to the pcb).
Is there anything printed on your pcb ?
Can you see any lines and a number of characters ?

It's quite likely you can use this display but you'll need to offer more info about it for any of us to be able to help you.
Have a look at "blink without delay".
Did you connect the grounds ?
Je kunt hier ook in het Nederlands terecht: http://arduino.cc/forum/index.php/board,77.0.html

schiller

Yes, there are 16 pins.

I noted on two new pics of any number and lines i could read, hope this will be helpful

thanks






MAS3

I'm sorry for not being clear.
Take a good look at the display itself  (the glass).
You might see the separate pixels, and they could be grouped in 5 x 7 blocks or something alike.
My question was how many of these blocks can you see.
Are there 2 (or 4) lines of 16 blocks, (or 8, or 20) ?
That was what i was asking for.

The new photo's show the epoxy "drop" (that black thing), meaning the chip is glued to the board.
The "310597" is probably a production or design date of that board (may 31st 1997).
L1 and L2 seem to be the connections for the lamps (they appear to be tubes) of the backlight for that display, and the red/black cable visible in the first set of pics would be to power these lamps.
What do you mean with serial port adapter cable, and what board is that in the first pic of your last post?

All other text you copied from the board, are component numbers (R for resistor, C for  capacitor).
Have a look at "blink without delay".
Did you connect the grounds ?
Je kunt hier ook in het Nederlands terecht: http://arduino.cc/forum/index.php/board,77.0.html

schiller

Yes, backlights for the display is provided by tubes.
The board in the previous pic was the one attached to the display pcb by a serial port adapter cable.

I disassembled the lcd and took more pics.


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