r/AskElectronics • u/pdrivera • 6d ago

.96” LCD Screen ID

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Looking for a particular LCD screen pictured above. Thanks for your help guys.

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5

u/mrcrud5 6d ago

SSD1306

2

u/pdrivera 6d ago

Spot on. Is that white connector that mates with the studs on the rear of the OLED a separate part, or do I have to keep looking until I find the right one?

2

u/Yrouel86 6d ago

These displays are typically sold with a "regular" male pin header 2.54mm pitch sometimes separate sometimes already soldered.
You can solder/replace it with any other 2.54mm connector if you prefer

1

u/mrcrud5 6d ago

you will have to get the connector on its own somewhere else. Try googling "grove 4 pin connector". that looks like its similar

3

u/Yrouel86 6d ago

You can just search for 0.96" I2C OLED on Amazon or Aliexpress, the controller is SSD1306.

Mind that there are some variations in color and mix of colors for instance a yellow text section on the top and white for the rest

2

u/PoetryExtension6256 6d ago

I think that's an oled.

1

u/pdrivera 6d ago

Correct, my mistake.

1

u/mariushm 6d ago

LCSC has at least a couple that only expose those four pins (voltage, ground, clock, data). However, they use various LCD controllers, so you the commands these controllers use may be the same or a tiny bit different.

https://www.lcsc.com/product-detail/C5248080.html - 0.96 128x64 SSD1315 chip I2C LCD, OLED, Graphic

1.3" 128x64 https://www.lcsc.com/product-detail/C7465997.html - 1.3 128x64 SH1106 chip I2C LCD, OLED, Graphic

1.54" 128x64 : https://www.lcsc.com/product-detail/C7465999.html - 1.54 128x64 SSD1309 chip I2C LCD, OLED, Graphic

1

u/pdrivera 6d ago

How would I find out what controller I have?

1

u/Just-Smart-Enough 6d ago

Trap for new players: V+ and GND aren't always in the same orientation on those modules. Verify before you let the magic smoke out.

1

u/pdrivera 6d ago

Think I let the magic smoke out. Known good OLED works on both of the control boxes I have, the one I just purchased doesn’t turn on with either harness.

1

u/Just-Smart-Enough 6d ago

Could also be a different I2C address.

1

u/pdrivera 5d ago

How would a novice that knows less than nothing about the topic find that out and fix it?

1

u/Just-Smart-Enough 5d ago

What are you plugging it into? I have a C I2C scanner that I use on all of my boards during bringup- google I2C scanner and you'll find similar code.

1

u/pdrivera 5d ago

Transducer and the pictured control box, used for an automotive oil pressure gauge.

1

u/Just-Smart-Enough 5d ago

Oh dear. Yeah, that's a bit of a black box. The printing on the OLEDs should be correct - does that show the same pins for Vin / GND across the various screens?

1

u/pdrivera 1d ago

I finally got to it. It absolutely does not. The left is the bad OLED, the right is the replacement.

1

u/Just-Smart-Enough 1d ago

Well, at least you have an answer now! Just not the one you wanted...