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.
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