Draw a QR Code How a QR code is used will vary greatly from project to project. For example: Display on an OLED screen (128x64 nicely supports 2 side-by-side version 3 QR codes) Print as a bitmap on a ...

QR Code stands for Quick Response Code and is a type of matrix barcode (or two-dimensional barcode) first designed in 1994 for the automotive industry in Japan. QR Codes are now widely used in various ...