Display issue ne3ed help please

[dr_duino]

I have the same problem ! I already tried the address 0x3D and 0X3C , none works . All black screen . I2C scanner does not return anything. I ask for help if someone can guide me better. thanks. OLED Display 128x128 I2C

[david_prentice]

Please post a link to the actual display that you have bought. e.g. Ebay sale page.
Please quote the Arduino model e.g. Uno, Zero, Due, ...

Then we don't have to ask endless questions.

David.

[Ballscrewbob]

Topic split from another topic. Please do not add your own questions to the end of other people's topics.

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[Idahowalker]

If I2C scan does not work, then the program will not work. Show an image of your project.

Which display are you using?

[groundFungus]

I would be really helpful if you were to post some clear photos of your wiring and setup.

[gilshultz]

You have to get the I2C scanner operating showing the ports first, if it cannot find them nothing else can either. I will take a SWAG and say you pull ups are absent or not low enough in resistance. I use 4,7K for 5V and 3K for 3V3 as a starting point. This is on the bus not each module.

[groundFungus]

Or connecting to A4 and A5 on a Mega board or ... Without concrete information, we could guess on and on.

[dr_duino]

I thank ! I've managed to make it work. I'm using the monochrome 128x128 Oled I2C. I installed the pullup resistors , and the option U8G2_SSD1327_EA_W128128_1_HW_I2C u8g2(U8G2_R0, /* reset=*/ U8X8_PIN_NONE) . Doubts: screen height is only admitting 96 Pix, is it correct?

[dr_duino]

OK !! Thanks

[dr_duino]

OK I've managed to make the display work! thanks