Product Overview
2/12/2018 GitHub - PiSupply/PiJuice: Resources for PiJuice HAT for Raspberry Pi - use your Pi Anywhere
https://github.com/PiSupply/PiJuice 3/5
Long press of at least 10 seconds to halt (soft shutdown).
Long press of at least 20 seconds to cut power (hard shutdown).
LED1- Charge status:
with Pi off
Green blinking: Standby
Blue blinking: Charging
Red blinking: Low battery
with Pi on
Green steady: Power on - Battery over 50%
Blue blinking: Charging
Orange steady: Low battery - level < 50%
Red steady: Low battery - level < 15% or battery absent
On board the PiJuice there are three buttons and two multicolour LEDs please refer to
thehardwareand thesoftwaresections to find out more.
Power management
The PiJuice provides an onboard intelligent on/off switch allowing you to have control on when the
Raspberry Pi will be switched on or off without having to plug or unplug the PSU as you would
normally have to do.
Note: Turning on the Raspberry Pi via the onboard intelligent switch only works when the power is
provided to the micro USB on the PiJuice.
When the Raspberry Pi is off, for example due to a scheduled power off via the onboard RTC, the
PiJuice will enter a low power deep-sleep state which guarantees only a minute fraction of the battery
charge will be required to keep the circuitry on ensuring long periods of inactivity between recharges.
This is for example ideal when dealing with recyclable energy sources like solar panels. At all times the
PiJuice will still be able to trigger a wake-up call to the Raspberry Pi via interrupt or calendar event.
The PiJuice has been designed so that it can accept power sources of different nature. It accepts power
sources providing between 4.2V and 10V which can be applied on different onboard connectors.
You can find out more in thehardware section.
UPS and remote functionality
One of the main functionalities provided by PiJuice is to ensure that the Raspberry Pi always remains
on when it needs to and shuts down safely when low on power. It provides a hardware watchdog
timer to keep your Raspberry Pi up and running for mission-critical remote applications and works as a
full uninterrupted / uninterruptable power supply solution.