Witty Pi 3 Mini: Realtime Clock and Power Management for Raspberry Pi

After installing Witty Pi 3 Mini on your Raspberry Pi, you get some amazing new features:

You can gracefully turn on/off Raspberry Pi with single tap on the switch.

After shutdown, Raspberry Pi and all its USB peripherals’ power are fully cut.

Raspberry Pi knows the correct time, even without accessing the Internet.

Raspberry Pi knows the temperature thanks to the sensor in RTC chip.

You can schedule the startup/shutdown of your Raspberry Pi.

You can even write a script to define complex ON/OFF