i2C scanner not working for 7 pin OLED

Other Hardware Displays
1

I can't seem to get the address for my 7pin OLED display. It kept popping out " no device found. Anyone knows how?
Here is my connection ( in the picture) . I followed the online instructions but they were all 4 Pin. I am using 7pin OLED And arduino UNO R3.

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2

You may have better luck getting an answer if you request that a moderator move your post to the Display section. Use the report to moderator link to make your request.

3

groundFungus:
You may have better luck getting an answer if you request that a moderator move your post to the Display section. Use the report to moderator link to make your request.

thanks. now i am at the display section.
Now i need some help with my problems .

4

let me send again...what do you mean more of SPI than I2C? i though they come together?

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5

You have an SPI display. All the popular SSD1306 libraries support SPI mode.

If you want to turn it into an I2C mode display you must post a photo of the display pcb. It will require some delicate soldering to change mode.

Life is easier if you just use as an SPI display. It uses a few more pins but is faster than I2C.

David.

6

But the project i am doing requires I2C functionality . and you mean this picture of the PCB?

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7

Yes. Configure for IIC by moving the 0R resistors.

If you are not happy with soldering, buy a 4-pin I2C display from Ebay or your local supplier.

David.

8

AARONYAP:
But the project I am doing requires I2C functionality . and you mean this picture of the PCB?

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And just why do you think your project requires I2C functionality? :astonished:

Not just because you kinda feel like it ... :roll_eyes:

9

Paul__B:
82184722_2672033732888952_8134053770926489600_n.jpg
And just why do you think your project requires I2C functionality? :astonished:

Not just because you kinda feel like it ... :roll_eyes:

its A PONG game. look it up. i need the iic address. . like 0X3C. I mean better to have it to ease my job as a beginner as i am not good at coding and i usually just copy coding from others and upload to my arduino. anything goes wrong will make me frustrated as i don't know how to fix .

10

So in fact, no reason not to use SPI.

Just read the instructions for the library. David should be able to explain.

11

Paul__B:
So in fact, no reason not to use SPI.

Just read the instructions for the library. David should be able to explain.

even if i can use the SPI. I don't know how. just making my life simple and use the IIC. i also didn't see any instructions in the library for SPI.