Have you ever been in a awkward situation where you’ve been in a office for a long time, but your colleagues just can’t remember your name clearly. Now there is a marvelous name badge for you to solve that problem. This badge is made of tricolor E-ink display designed by DFRobot. You can DIY own style for the name badge and add your unique idea into it. Just like this!
The positive pole of the battery → The left pin of the push-button switch
The right pin of the push-button switch→ ESP32+
ESP32→ The negative pole of the battery
Fasten the Display to ESP32
The product WiKi on DFRobot website really helped me a lot.
First, we need to draw a monochrome bitmap image on the drawing board of Windows. And then convert the image into arrays via the software lcd-image-converter.exe in the WIKI. The arrays are the code of the program. So I will just skip over it here.