Hi Nihn,
if the clear statement doesn’t work, you could try the display.fill(0) statement as workaround, or you can try to fill the whole display with a display.fill_rect with color set to 0.

Please can you give me a feedback if one of these tests works?

Hi Hans, thank you for your feedbck. Please can you share with me your GIMP file (.pbm) and a screenshot of what you get from your OLED display? You can send them to me at giuseppe@peppe8o.com

Thanks peppe80, yes I see that now. Thanks for clarifying

Hi Douglas,
your doubt is common to many people at their first approach with Raspberry PI boards and sometimes it can confuse people. If you look at the Raspberry PI Pico pinout you can see that every PIN has 2 numbering systems: the physical one (where you see the 21 and 22) and the “GP” one (which are the numbers used when coding, where you will find 16 and 17).
Hope you will find this more comprehensive with this

But I am a bit confused, though I am new to all this

So the code says

# setup the I2C communication
i2c = I2C(0, sda=Pin(16), scl=Pin(17))
display = ssd1306.SSD1306_I2C(128, 64, i2c)

But I seem to be using Pins 21 and 22 as in the diagram.

Just curious as to why is says i2c = I2C(0, sda=Pin(16), scl=Pin(17)) but not i2c = I2C(0, sda=Pin(21), scl=Pin(22)) or even i2c = I2C(0, sda=Pin(22), scl=Pin(21))

Hi Diwakar, please double check your wiring. Sometimes a wire not performing a good contact may create communication problems. Also check that the Raspberry PI Pico heading is soldered correctly (without bridges and without PINs physically moving). If the wiring is ok, you should see the OLED address from an I2C scan (refer to this post for the I2C scan instructions: )

Traceback (most recent call last):
File “main.py”, line 30, in
File “ssd1306.py”, line 118, in __init__
File “ssd1306.py”, line 37, in __init__
File “ssd1306.py”, line 76, in init_display
File “ssd1306.py”, line 109, in show
File “ssd1306.py”, line 127, in write_data
OSError: [Errno 110] ETIMEDOUT

Thank you for your appreciation, Wolfgang.
By the time, I need to update some posts that become not working because of software updates (quite all the time on Raspberry PI computer boards) or because I add some content for whatever reason. in these cases, WordPress (the CMS I use) sorts automatically the posts based on last update date.
If you want to look only at Raspberry PI Pico tutorials, you can anyway check on the Pico category from peppe8o.com menu (that means the following link -> https://peppe8o.com/category/raspberrypi/pico/). Or you can both subscribe my newsletter (where I notify only the last posts).
In the meanwhile, I’ll look for a plugin or something similar to highlight new posts in order to get them more visible.
Nevertheless, thank you for your suggestions, I really appreciated them.