Pinout of LCD Display ANAG VISION - AV1623?

[drukob]

Hey everyone!

I've got this cheap LCD module AV1623YFTY and I am having trouble getting it to work.

The data sheet that is supplied by the website can be found here: Datasheet

Unlike almost all other tutroials online, this display does not have the 16 inputs in a line, which need to be soldered, but has a 2x8 pin connector attached already. However, according to the datasheet the order should be pretty much the same as the default.

I am following this tutorial here and I am stuck at the contrast regulation and I cannot see any black boxes, no matter the setting of the potentiometer. The backlight works, however, the datasheet seems to be wrong in this regard, as I had to switch pins 15 and 16 (15-->GND, 16-->5V). This leads me to believe, that the data sheet might be wrong and the other pins might be switched somehow too? I cannot find another data sheet for this display though.
Or maybe the pin-order on the connector is different than I thought? I assume it would be like this:

|1|2|
|3|4|
|5|6|
|7|8|
....
|13|14|
|15|16|

I have not even attached the arduino yet with any script, since to my understanding, the contrast setting and the black boxes should appear independent of any logic, right? So currently only pin 1-3 plus the backlight 15, 16 are connected.

I tried many different pins to power the display, could it be that I damaged the display in that process? Does anyone have the same type of display and got it working? Or is it maybe just a faulty display? (Will try to get another one and check if that one works in the same setup)

(Btw. what's normal regarding the heat development of such an element? The back of the screen is getting incredibly hot when powered, so that I can barely touch it in certain areas)

Thanks Everyone,
Drukob

[drukob]

Hey,

no one here that can help me with this specific module?
I've added pictures of the setup that shows the backlight working but no boxes appearing, no matter the setting at the potentiometer (or connecting pin 3 directly to ground). I'm just kinda sad that I cannot even get such an easy setup working. Checked all the pin connectors, so I do not think it's a soldering problem of the headers either. Any help would be appreciated!

Thanks,
Drukob

[mik_l]

Hey,

the datasheet is not wrong and shows the correct pinout, but the IDC socket was assembled to the wrong side pretending another labelling and that might be the reason why this module is being sold for less than two euros. So you were mislead to connect the potentiometer to Function Select (pin #4) instead of LCD Drive (pin #3). Just try to gently pull the IDC socket shell from the PCB to reveal the "truth":

Now the numbers are the same like in the tutorial.

Mike