Is this OLED faulty?

Other Hardware Displays
1

Hi all,
I have got a SH1106 OLED display.
As I was experimenting with it a vertical line of pixels appeared on the right of the screen and they cannot be removed.
I have also noticed that text aliment is set at minus 2 pixels.
These faults can be seen on the picture below.

Is my OLED faulty, or there is something I can do?
Regards and thank you.

Code and screen shot below.

include <SPI.h>
#include <Wire.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SH110X.h>

#define OLED_MOSI     26
#define OLED_CLK      25
#define OLED_DC       14
#define OLED_CS       12
#define OLED_RST      27


// Create the OLED display
Adafruit_SH1106G display = Adafruit_SH1106G(128, 64, OLED_MOSI, OLED_CLK, OLED_DC,
                           OLED_RST, OLED_CS);

void setup()
{
 testme();
}

void loop()
{}

void testme()
{
  display.begin(0, true);
  display.clearDisplay();
  display.setTextSize(1);
  display.setTextColor(SH110X_WHITE);
  display.setCursor(0, 0);
  display.print("Text at 0,0");
  display.setCursor(1, 20);
  display.print("Text at 1,20");
  display.setCursor(2, 40);
  display.print("Text at 2,40");
  display.display();
  delay(1);

IMG_20220804_145449397
IMG_20220804_1454493971920×1440 162 KB

2

Which OLED do you have? Any link to the details about it? Is it a 128 x 64 pixel display?

3

I ran your program on a genuine SPI SH1106 on a M0 Pro via the Web Editor.
My display hardware looks like your photo. But the output was correct.
Of course we really need to see the pcb view for a proper comparison.

Anyway, my display worked just fine (with up to date Adafruit_SH110X library)

Using library SPI at version 1.0 in folder: /home/builder/.arduino15/packages/arduino/hardware/samd/1.8.13/libraries/SPI

Using library Wire at version 1.0 in folder: /home/builder/.arduino15/packages/arduino/hardware/samd/1.8.13/libraries/Wire

Using library adafruit_gfx_library_1_11_3 at version 1.11.3 in folder: /home/builder/opt/libraries/adafruit_gfx_library_1_11_3

Using library adafruit_busio_1_13_1 at version 1.13.1 in folder: /home/builder/opt/libraries/adafruit_busio_1_13_1

Using library adafruit_sh110x_2_1_7 at version 2.1.7 in folder: /home/builder/opt/libraries/adafruit_sh110x_2_1_7

You don't say which Arduino you are using.
I can see where the display.display(); is going wrong.
I suspect that you have an obsolete Adafruit_SH110X version.

David.

4

HI David.
thank you for setting me on the right track.
I did check the library and it was the latest.
However I re-installed i the library and now the problem is gone.
Thank you to all.
Have a nice day.

5

My advice is always : Post a link to the actual hardware display that you have bought. e,g. Ebay sale page.

This generally has photos of front and back. Best way to identify the item.

Yes, I know that your screen output was "wrong". It seemed to be a SH1106 library problem. And you have resolved it by re-installing / updating the library.

But often we don't know or can't trust the user's description.
Advertising Photos are the best way to give the information. i.e. a picture is worth a 1000 words!!

David.