Electronic ink display when not refresh screen, very save energy consumption, combined with Realtek (Realtek) ARM Cortex M33 core microcontroller RTL8722 use, can save more energy, the MCU is dual-band WiFI and BLE 5.0, the maximum clock frequency of 200 MHZ, thus can parse the URL of the long string and locally generated qr code, in this demo, we will show you how to generate qr code and displays it on the electronic ink display,

B station demo video: https://www.bilibili.com/video/BV1vC4y1t7hN/