MicroPython Forum (Archive)

Thanks for reply. No I don't have pull up resistors on either line - I've only seen this mentioned in one Youtube video and this was when multiple devices were connected on the one I2C bus, all other references (youtube/code) to oled and Tiny/2040 make no mention of these. I will add these next and ...

Hi Mike2545,

I'm also getting EIO error with Tiny 2040 and oled 128x32, tried delays. Can you explain what you did to 'tying 3v3_EN High' ?

Thanks.