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UPS HAT (B) For Raspberry Pi, 5V Uninterruptible Power Supply, Multi Battery Protection Circuits
The 8.4V interface is the charging interface, which uses an 8.4V 2A power supply for charging. 5V OUT is a USB male port that can output 5V power. The 0FF/ON silkscreen is the power switch silkscreen.
Note 1: Please turn the power switch to OFF before you connect the battery, or the board may be damaged because of shorting. After installing, make sure that the Pogo pins are completely aligned with the pin header before turning on the power. If the Pogo pins are not conducting, you can press the pin to loosen it or use a knife to scratch off the oxide layer of the pin header.
Note 2: The board may not work when you mount the batteries for the first time, you need to press the Boot button to activate the circuit.
Note 3: When connecting the battery for the first time, you need to pay attention to whether the WARNING LED is on. If the LED is on, it means that the corresponding battery is connected reversely. Prohibit charging when the battery is connected reversely
Note 4: It is recommended not to exceed 4A when working for a long time and working with high current. It will heat up when working at 5A for a long time. Pay attention to heat dissipation..
Note 5: To use the power supply configured with the product to charge, using other power sources may cause the product to be damaged due to too large and unstable output power ripple.
Open the terminal:
sudo raspi-config Choose Interfacing Options -> I2C ->yes
sudo reboot
Fix the UPS HAT (B) with Raspberry Pi.
Open a terminal and run the following commands:
sudo apt-get install p7zip wget https://www.waveshare.com/w/upload/4/4a/UPS_HAT_B.7z 7zr x UPS_HAT_B.7z -r -o./ cd UPS_HAT_B python3 INA219.py
The terminal will print the IP address, battery voltage, current, and the percentage of battery quantity, as well as the CPU, GPU and memory information after starting the server.
Note: if the current value is negative, it means that the batteries are feeding the Raspberry Pi. If the current value is positive, it means that the batteries are charging.