I2C Display not working

Other Hardware Displays
1

Hello! I have been working on an Arduino Due for some time now and decided that it was time to use my 8-pack of OLED displays I had. So I wired the things up GND to GND, VCC to 3V3, SCL to SCL, and SDA to SDA. So, I did that, and eager to try it, flashed the code from the library (LiquidCrystal I2C). Then, sadly it didn't work so I googled and googled until finding hd44780. Ran the diagnostic from that and it told me my I2C was working and didn't call it a display oddly. However, I continued to run the HelloWorld example sketch from the library and it didn't work (didn't flash an error code at me). I also tried connected the 5V pin to VCC on the OLED. I have tried like 5/8 displays in the pack. Can anyone help me?
Thanks in Advance.

(Note: I couldn't find the images of the wiring I took)

2

Are you sure that the display controller is the hd44780 controller? Can you post a link to the displays that you have or a data sheet or a photo of one?

Copy and post the output from the diagnostic program.

3

Amazon.com is the amazon link. I would like to note that me trying that other library was out of me googling super hard so I don't know if my board is hd444780.

4

You have a 128x32 OLED not a character LCD

Install Adafruit_SSD1306 via the IDE Library Manager.
Use this constructor:

Adafruit_SSD1306 display(128, 32, &Wire);
5

Can I just do display.print/display.println or is there a special thing i need to do?

6

There should be examples with the Adafruit_SSD1306 library that will show how to use the functions of the library.

7

Oh wait, figured it out! You can use display.print and display.println!

8

The I2CexpDiag sketch should have reported "No working LCD devices" since that display is not a hd44780 LCD with a i2c backpack.

Which "HelloWorld" sketch did you run?
If you run the one in the hd44780_I2Cexp i/o class it should blink an LED when the initialization fails.

--- bill

9

It did blink an LED and I knew it failed.