SparkFun’s flexible OLED breakout board is a small grayscale display that can be bent up to 40mm radius without any damage. The 0.5mm thin display is attached to a controller board and can display graphics with high contrast. The 0.42g OLED display is 1.81″ long with 160 x 32 pixels (4-bit grayscale resolution) and a 3-wire SPI interface, and features 88 DPI pixel density. The 2.25g board can be connected to the MCU by soldering the header to the OLED breakout or by soldering wires straight to the breakout pins. The onboard buffer on the breakout operates from 3.3V to 5V logic without any conversion circuitry.