OLED12864 - Digole 128x64 OLED display I2C address 0x27.
sudo apt-get install i2c-tools
sudo raspi-config
3 Interface Options -> I5 I2C -> Yes
$ sudo i2cdetect -l
i2c-1 i2c bcm2835 (i2c@7e804000) I2C adapter
i2c-2 i2c bcm2835 (i2c@7e805000) I2C adapter