This shield extends the D1 Mini with an OLED display. - I2C interface - I2C address definable via jumper (0x3C or 0x3D) - Supply voltage: 3.3 V - Display size: 0.66" - Resolution: 64x48 pixels Pin assignment - 3.3 V: 3.3 V Power supply - D1: SCL - D2: SDA - GND: Ground Useful links https://docs.wemos.cc/en/latest/d1minishiled/oled066.html NoteDelivery incl. pin strips