DFRobot recently release a new line of development boards called Firebeetle. Fortunately I had a chance to try the Firebeetle ESP32 IoT board and the dot matrix cover. Then something popped up in my mind to build a wearable device from those two pieces of hardware.The Project
So, I came up with this interactive badge that could be programmed using MicroPython. The Firebeetle has a Jst connector for lipo battery and I have a lipo battery lying around that I can use. Because the ESP3288 has the capability to connect to the WiFi, this badge also could grab the data from openweather API to give information about the weather.
You can tweak the code to make the badge display any kind information you want, just make sure you have enough memory space.