Recently I was work on the esp-discord library (component) for easy way of making Discord Bots on the ESP32 chip, by using ESP-IDF framework.
Here is interesting video about how to use Discord as a secured server for OTA updates:
https://youtu.be/u8uhCy-IJwM
As well, here is interesting project where I was create RFID Attendance System with Discord Bot on the ESP32:
https://youtu.be/m5QvkdEDR54
Hope you will like it
Best regards,
Alija