Just hacking an 18 V battery into the existing wiring and controls ... But perhaps the most exciting part of the PowerJeep project is the ESP32 that’s been added into the mix.

Seeed Studio IoT Button is an inexpensive ESP32-C6 button powered by a rechargeable 18650 battery and designed to easily and quickly control Smart Home ...

The ESP32 is the successor to the wildly popular ... the module doesn’t have a display. [G6EJD] wanted to connect an ILI9341 TFT display and he put the code and information on GitHub.