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This Oled display is currently in SPI mode (I2C convertible). Where do CS, DC, RES, SDA and SCL pin go on the Nano? Seems like they mixed up the name and I
A Guide to Arduino & the I2C Protocol (Two Wire) | Arduino Documentation | Arduino Documentation
Arduino Pro Mini SDA and SCL pins
Can't Get I2C to Work on an Arduino Nano? (Pinout Diagrams) | Big Dan the Blogging Man