OLED or organic light-emitting diode is a light-emitting diode (LED) in which the emissive electroluminescent layer is a film of organic compound (millions of small LED lights) that emits light in response to an electric current. An 128×32 OLED device can be considered as a matrix of 4,096 individual pixels that each can individually be set ON – they light up – or OFF – just background. Because background is ink black the ON pixels stand out pretty nicely and readability is perfect. Due to this pixel configuration it is possible to design and display graphic bitmaps: logos, avatars, sprites. The display uses the SSD1306 chip and can be interfaced with any microcontroller through I2C/SPI communication protocol. Features Interface: I2C Resolution: 128 x 32 Diagonal Screen Size：0.91″ Display area: 7mm x 25mm / Board Size 12.0mm x 39mm Thickness: 4mm Pixel Size (mm)：0.159 × 0.159 Technology: OLED Blue Graphic Driver IC is SSD1306 Wide input voltage: 2.5V-5.5V
