Hey , I'm a new user of attiny85 usb dev .
I have connected it with arduino IDE , the blink code work ,attiny85 is working !
I have tried to connect it with oled 128x64 I2C.
After few different researches I found the correct librairie , and I used the example of digistump, and it worked !! (I just run the code without modification) .
But few day later, I may have endomaged the screen accidentely, because when I reconnected it with attiny85 it didn't work.
After few tries; like wiring changes, power checking; attiny85 checking, I tried with arduino with another code , and it worked, the screen blinked and my code was working .
Then I tried it again with the attiny85 and it still didn't work .
After few tries , I connected the screen with arduino and when the code was running and the alight, I change the I2c connection of the arduino with I2c connection of Attiny85 and i was surprised when the code of attiny85 run on the screen and if I disconnect totally Arduino the attiny is still working with the screen normaly but if I reboot attiny by it own the screen don't work!
I didn't understand why the Attiny can't "boot" the screen by it own but if I "boot" the screen with arduino then change I2C cable , the attiny85 works .
Thank's you for your help , (I'm sorry for my english level I'm a french student !)