Overview

The Pico-UPS-A is a dedicated UPS (Uninterruptible Power Supply) module designed for Raspberry Pi Pico. It incorporates a Li-ion battery switching charger with power path management, and a voltage/current monitoring chip, which allows monitoring of the battery operating status via the I2C bus.

Features

• Standard Raspberry Pi Pico header supports Raspberry Pi Pico series boards
• Incorporates Li-ion battery switching charger with dynamic power path management, more stable power supply
• I2C bus communication, monitoring the battery voltage, current, power, and remaining capacity in real-time
• Multi battery protection circuits: over charge/discharge protection, over current protection, short circuit protection, and reverse protection, along with the equalizing charge feature, more safe and stable
• Onboard recharging indicator, power indicator, and battery warning indicator to check if the battery is connected correctly

Documents

• Schematic
• ETA6003 Datasheet

Demo codes

• Demo Codes

Specifications

• Recharge voltage: 5V
• Control bus: I2C
• Battery support: 14500 battery (Not included)
• Dimensions: 60 x 21mm

Pinout

Setup Environment

You can refer to the guides of Raspberry Pi: https://www.raspberrypi.org/documentation/pico/getting-started/

Working with Raspberry Pi

1. Access Raspberry Pi and open the terminal
2. Download the download and unzip it to the Pico C/C++ directory. You need to follow the guides of Raspberry Pi to install SDK first.

wget -P ~/pico https://www.waveshare.com/w/upload/9/92/Pico-UPS-A.zip
cd ~/pico
unzip Pico-UPS-A.zip

C examples

• Press the BOOTSEL button of Pico and connect the Pico to your Raspberry Pi by USB cable and then release it.
• Build and run the C examples

cd ~/pico/Pico-UPS-A/c/build/
cmake ..
make
sudo mount /dev/sda1 /mnt && sudo cp Pico_UPS.uf2 /mnt && sudo sync && sudo umount /mnt && sleep 2 && sudo minicom -b 115200 -o -D /dev/ttyACM0

• The expected result should be as figure below:

Python examples

• Access Raspberry Pi and open the Thonny.
• Open the example by the IDE and save

• Click the Run button to run the codes

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