I am trying to get a cheap SH1106 1.3" OLED from eBay working with my Raspberry Pi 2. Frm the eBay description, it says that it supports "I2C/IIC Interface, need only 2 IO". I am however not able to have it detected by i2cdetect (only gives me --).
The module has 7 pins: GND, VCC, CLK, MOSI, RES, DC, CS. I have tried different wirings. Is this module SPI only? (wrong description).
Which pin is supposed to be connected as SDA/Data if using I2C?