Grove OLED 1.12' V3.0 Monochrome Display Seeed Studio Grove OLED 1.12' V3.0 Monochrome Display provides a 128x128 resolution and excellent performance with both I2C and SPI available. The OLED (Organic Light Emitting Diode) Display works on both 3.3V and 5V supply voltage and features self-emission, high contrast ratio, slim/thin outline, wide viewing angle, and low power consumption. Either the I2C or SPI interface lights up the display with a microcontroller to display words or images. However, the SPI brings a quicker image reaction for a better product experience.