Hello Sara & Rui

Can you suggest whats wrong with the following to get the error shown. I have managed to suceed on my earlier challenges with your guidance I am trying to generate a battery graphic with the following code sent to the SSD1306 but have come to a dead end. I first want to just see if i can fill the ssd1306 with around 6 segment blocks of pixels. If I can achieve this I will code up to check battery volts and extinguish the segments as the battery voltage decays, so pretty easy just struggling a little with OOP

I have managed to create a file called battsegsdh.txt, which is a binary file containing just 0 and 1 for sending to the display, code ( saves me hopefully using masses of .Hline print statements). The code below is made up from some being mine and also googled

#Example of using graphics via framebuf
from machine import Pin, I2C, 
from time import sleep
import ssd1306
import framebuf
import display
#Graphics ESP32 Pin assignment
i2c = I2C(-1, scl=Pin(22), sda=Pin(21))
oled_width = 128
oled_height = 64
display = ssd1306.SSD1306_I2C(oled_width, oled_height, i2c)
#To display just blit it to the display's framebuffer (note you need to invert,
#since ON pixels are dark on a normal screen, light on OLED).
with open('battsegsdh.txt','rb') as f:
#f.readline() # Magic number # i dont need since i edited it out in imported file
#f.readline() # Creator comment # i dont need since i edited it out in imported file
#f.readline() # Dimensions # i dont need since i edited it out in imported file
data = bytearray(f.read())
#hopefully below i created an instance of framebuf with arguments in parenthesis)
fbuf = framebuf.FrameBuffer(data, 128, 64, framebuf.MONO_HLSB)
display.invert(0)
display.blit(fbuf, 0, 0)
display.show()
 
I get
>>>
Ready to download this file,please wait!
......
download ok
exec(open('trying to do bat.py').read(),globals())
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "<string>", line 6, in <module>
ImportError: no module named 'display'
>>>

but I have imported the display module???, others ask similar questions

Your help is appreciated since im a little stuck 🙁

Regards

Damian