
This Nextion display tutorial covers how to generate QR code on Nextion display. In this tutorial data being data over serial connection.
This tutorial also covers interface with Arduino pro mini board.
Here is code for arduino.
https://drive.google.com/open?id=1_I5Z9U4fIQNHrBMCjifxOamwZ2Cmf5Z6
Github location for QR HMI file and Arduino .ino file.
https://github.com/stechiez/NextionDisplay/tree/master/qrcode
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