Transparent OLED SSD1309 - hoiyuyiu/u8g2 GitHub Wiki
SparkFun Transparent Graphical OLED is OK!
System:Transparent OLED Board:RED Board turbo Connector:Qwiic
Contructor Command:U8G2_SSD1309_128×64_NONAME0_F_HW_I2C u8g2(U8G2_R0,U8X8_PIN_NONE,21,20);