In this example we will display a QR code on an OLED display with an ESP8266, in this case a Wemos mini. This will require a couple of libraries to be imported into the Arduino IDE. Layout Code You will need a couple of libraries https://github.com/anunpanya/ESP8266_QRcode and https://github.com/squix78/esp8266-oled-ssd1306 Now for a simple example, […]