Witty Pi is small electronic circuit board that can add realtime clock and power management to your Raspberry Pi. Witty Pi 3 Mini is a new member of the third generation of Witty Pi, and it has pHAT shape (Raspberry Pi Zero size).

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 sequence. Monitor external voltage and turn on/off your Raspberry Pi accordingly. Witty Pi 3 Mini supports all Raspberry Pi models that has the 40-pin GPIO header, including A+, B+, 2B, Zero, Zero W, Zero 2W, 3B, 3B+, 3A+ and 4B.

Comparing to Witty Pi 3, Witty Pi 3 Mini uses the same RTC chip (DS3231SN) and same micro-controller (ATtiny841). The main difference is the LDO voltage regulator (LM29150) is not populated on Witty Pi 3 Mini. This reduces the cost for those who don’t need this LDO, and also make things easier to integrate a different DC/DC module into Witty Pi 3 Mini.

Each Witty Pi 3 Mini package contains:

Witty Pi 3 Mini board x 1 M2.5 x 10mm plastic screw x 4 4mm spacer x 4 M2.5 plastic nut x 4