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Author Topic: Pinout for 16x2 LCD  (Read 660 times)
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Hi

I have a 16x2 LCD panel (14 pin). Attached are the front and back pictures for the same.

It seem to have been attached on top of another board (wonder whats that for)

I would like to find out the pinout diagram. I am not able to find it on the web.

Also, will I be able to use this display with Arduino Uno ?

Thanks.


* Photo Aug 18, 12 22 40.jpg (1966.39 KB, 3264x2448 - viewed 33 times.)

* Photo Aug 18, 12 22 27.jpg (1822.96 KB, 3264x2448 - viewed 28 times.)
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I would desolder the display from the other board.
Maybe some text is visible on the bottom of the display pcb.
As it's only got 14 pins, and the way it looks to be constructed, the display seems to have no backlight.
Try to find indications for pin 1 and for some display manufacturer or the display type.
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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

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Its probably one of the Hitachi HD44780 LCD controller based modules.
Remove it from the other board and you should find it easer to identify.
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Sorry for the noobish post but my knowledge is 10 years out of date!

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You probably do not even have to identify it, just use it with any of the LiquidCrystal example programs.

[Edit] - On second thought you may indeed have to identify it or at least verify the pinout.  The devices with pins above the display are pretty standard, the pins are numbered 1 --> 14 starting from the edge of the board.  The devices with the pins below the display typically have a non-standard pinout and you may find the pinout reversed, with pin 14 near the edge.  Fortunately you do not have to deal with the backlight which would add more uncertainty.

I would start with just the power and GND leads and see what it takes to get a single row of blocks on the screen.  Connect +5 to the second pin and connect GND to the first and third pins.  If that doesn't work then try again at the other end.  I would recommend using a potentiometer to power pin 3 when you actually go to use the device.


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« Last Edit: August 18, 2013, 10:16:12 am by floresta » Logged

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Thanks everyone.

I desoldered and it was just like any other 16x2 LCD with 14 pins.

It works like a charm.

Thanks again.
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Can't see any backlight though.  They're not as much fun without.

Post straight-on pictures of the other board and it might have some useful functionality.
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Well 14 pins is all i got.

Here are the pics of the other board.


* Photo Sep 01, 11 55 54.jpg (1797.23 KB, 3264x2448 - viewed 27 times.)

* Photo Sep 01, 11 56 16.jpg (1783.03 KB, 3264x2448 - viewed 17 times.)
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Mostly these kind of lcds has a standard-wiring:

connect 1,3,5 to Ground, 2 on power, 6 to RS and 7 to 14 as DB0 - DB7 (the dataports in 8Bit Mode)

Alternative connect 7-10 to ground,too and 11 - 14 as DB0 - DB3 (the dataports in 4bit Mode)

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