UPS-Hat-for-Raspberry-Pi

UPS Hat is a 5v power supply, It fit at the top of the raspberry pi, it gives power backup, while raspberry pi's USB power is cut off. It has various protections like short circuit protection, reverse battery protection and indicator, overcharge/discharge protection, and over current protection. It has a 5V USB output, convenient for powering other boards.

Features

• Two on board battery reverse indicator Led's
• Two on board USB power port for external devices
• Onboard oled display, for displaying current, voltage,power and battery percentage of UPS HAT
• Onboard Battery Pack Protection and Charge Balance IC

Specification:-

• Output voltage : 5V USB
• Charger : 8.4V 2A (Recommended)
• Commuincation : I2C
• Power monitoring IC : INA219
• Battery Supported : 18650 Li Battery
• Display=>
  • Type : OLED
  • Screen Size : 0.91"
  • Resolution : 128x32 pixels
  • Color : Monochrome
  • Interface : I2C

Code

First of all, you need to enable I2C in raspberry pi, for this you need to go sudo raspi-config then go to "interface options->I2C->yes->press enter"

This folder contains two python files and Images, Fonts folder:-

• INA219_UPS.py -> This file you need to run, displays the load voltage, current, power, and battery percentage on the terminal as well as in OLED
• oled_091.py ->This is the OLED display library
• Images folder contains images which we display in OLED display
• Fonts folder contain various fonts, which we use in the OLED display

Steps To Use UPS HAT (Follow These Steps) (Important *)

Connect the type c power to the raspberry pi first, then turn on the UPS HAT, then disconnect the type c power from the raspberry pi or turn off the raspberry pi external power (at this time raspberry pi restart due to sudden power drop)Then reconnect the type c power to the Raspberry Pi after that ( In this process your raspberry pi needs to restart one time if you use UPS backup), The Raspberry Pi now does not restart if the type c power is turned off or if the external power is turned off.

You need to follow this process when you use UPS HAT. if you use this process, your OLED problem is also resolved(static noise pattern)

• Fix UPS HAT at the top of the Raspberry Pi

  

• Plug the Power cable to raspberry pi

  

• Now Switch on UPS HAT using slider switch,then disconnect the type c power from the raspberry pi or turn off the raspberry pi external power (at this time raspberry pi restart due to sudden power drop)Then reconnect the type c power to the Raspberry Pi after that ( In this process your raspberry pi needs to restart one time if you use UPS backup)

  

  Disconnect the external power

  Reconnect the external power

Run a Program On Your Raspberry Pi At Startup (*optional)

Go to below directory

sudo nano /etc/rc.local

sudo python3 /home/pi/UPS-Hat-RPi/INA219_UPS.py &

Press Control+X then press Y to save

Working