Power Management HAT for Raspberry Pi, Embedded Arduino MCU and RTC

Power Management HAT For Raspberry Pi, With Embedded Arduino MCU And RTC

Overview

The Power Management HAT is a smart power bank designed for Raspberry Pi. With the embedded Arduino MCU and RTC, the HAT features auto power management function which allows the Pi to work more power-efficient and more safely.

If you're looking for some convenient utilities for yor long-term working Raspberry Pi, such as longer battery life, or auto power on-off control, this Power Management HAT would be the ideal choice.

By auto starting up on specified period, and auto shutdown at other time, the HAT can greatly save the battery life. It will monitors the operating voltage/current status of the Raspberry Pi in real time, and can be configured to shut the Pi down according to the operating status. What's more, it comes with a handy power switch for easy on or off (safely shutdown the Pi by software), to avoid data loss caused by unplugging the power supply.

Features

Standard Raspberry Pi 40PIN GPIO extension header, supports Raspberry Pi series boards Onboard ATmega328P MCU, supports Arduino programming Onboard PCF8523 RTC chip, provides precise RTC information Onboard CP2102 UART converter, for UART communication or ATmega328P programming User-defined button, can be used for Raspberry Pi start up, safely shutdown, or other customized function Protection circuits such as: power supply anti-reverse, counter current proof, etc. ensures stable and safe operating Voltage/current monitoring circuit, monitors the Raspberry Pi operating voltage and current in real time Comes with development resources and manual

Specifications

Controller: ATmega328P-AU Communication interface: UART + GPIO Baudrate: 115200bps by default (programmable) Power supply interface: USB port or PH2.0 connector USB power input voltage: 5V PH2.0 power input voltage: DC 7~28V (regulated power supply or lithium battery) Embedded circuits: power supply anti-reverse, counter current proof, voltage monitoring, current monitoring Mounting hole size: 3.0mm

What's on Board

ATmega328P-AU MCU MP1584 power manager PCF8523 RTC chip CP2102 UART converter CAT24C32: EEPROM storage chip Raspberry Pi GPIO connector: for connecting Raspberry Pi PH2.0 connector: for 7~28V regulated power supply or lithium battery USB TO UART: for power input or UART communication DEBUG switch:
DEBUG side: power supply will bypass the Arduino and directly provides to Raspberry Pi
the opposite side: power supply is managed by Arduino PWR button: for Raspberry Pi power on/off, or user-defined function RST button: Arduino reset Status indicator Power indicator CR1220 button battery holder UART selection:
A: access Arduino via USB to UART
B: control the Raspberry Pi by Arduino
C: access Raspberry Pi via USB to UART

Example

Dimension

Development Resources

Wiki : www.waveshare.com/wiki/Power_Management_HAT

Weight: 0.104 kg

Note: the Raspberry Pi and 18650 batteries are NOT included.

1. Power Management HAT x1
2. 18650 battery case x1
3. USB-A to USB micro B cable x1
4. 2x20PIN female pinheader x1
5. RPi screws pack (2pcs) x1