E-Ink Display Console

This is a small battery powered display console.
Main incredience:
* 2,9 inch 296x128 E-Ink E-Paper Display Modul
* ESP32 Lolin board
* 3 Buttons
* LiPo 3,7V

**Note:
LiPo batteries cause a fire risk. You should test the proper charge and discharge behavior of the used board. Purchase high quality products. Don't use damaged or puffy LiPo batteries. Check regularly. Never leave the device charging while unattended. Remove the LiPo battery if the device is not used and store it safe. Respect correct disposal of the battery.
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I am using this device to control some home automation features. It's controlled via the 3 buttons, which are used as soft keys. The ESP32 is normally in deep sleep mode and wakes up every minute to update the time, or if the right button is pressed. The communication is based on Bluetooth LE to a central, which provides the current time and different characteristics to control the home automation functions.
I have chosen BLE in order to consume l