Hello, I need help with diy arduboy. Ive been using arduino uno and oled ssd1306 i2c. And it just dont work. Can somebody help me?
There have been countless threads on this forum regarding the ATmega328p and i2C displays. Please check/research before you create a new thread 
We can only help you if you could send a picture or explain what in detail what the issue is (if you get an error while uploading, etc.).
It is important to note, however, that the vast majority of games can not run on the Arduino Uno/Nano/Atmega328p. You have to use this library instead: GitHub - harbaum/Arduboy2: Arduino Nano port of the Arduboy miniature game system. The i2C display is also not as fast as an SPI display.
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