| Button2 | Arduino/ESP library to simplify working with buttons. |
| ESP Battery | Arduino Library to calculate the ESP8266 (Feather Huzzah) battery level. |
| ESP Rotary | ESP8266/Arduino Library for reading rotary encoder values. |
| ESP Telnet | ESP8266/ESP32 library that allows you to setup a telnet server. |
| M5FacesEncoder | Arduino Library for reading encoder values from the M5Stack Faces Encoder Module |
| OTAWrapper | ESP Library to simplify OTA setup. |
| SimpleFSM | Arduino/ESP state machine library. |