User Manual

1
What is Witty Pi (Mini)?
Witty Pi is small extension board that can add realtime clock and power management
to your Raspberry Pi. After installing Witty Pi on your Raspberry Pi, you get some
amazing new features:
 Gracefully turn on/off Raspberry Pi with single tap on the switch.
 Fully cuts power for Raspberry Pi and all its USB peripherals after shutdown.
 Raspberry Pi knows the correct time, even without accessing the Internet.
 You can schedule the startup/shutdown of your Raspberry Pi.
 You can even write a script to define complex ON/OFF sequence.
 When the OS loses response, you can long hold the switch to force power
cut.
Witty Pi supports all Raspberry Pi models that has the 40-pin GPIO header, including
A+, B+, 2B, Zero and 3B.
Witty Pi Mini is a new member in Witty Pi family. It has same features with Witty Pi
Mini and is much smaller (pHAT shape). Comparing to Witty Pi Mini, Witty Pi Mini
uses a super capacitor (0.08F, or 80000uF) for realtime clock off-power time keeping,
and use two surface mounted switch to replace the red and blue jumpers in Witty Pi
Mini. Thanks to the small dimension (65mm x 30mm x 4mm), Witty Pi Mini is very
suitable to be used on Raspberry Pi Zero (V1.2, V1.3 or W), although it could also be
used on other models.
The picture below shows how Witty Pi Mini looks like: