Questions tagged [ups]

This tag is for questions relating to Uninterruptible Power Supplies designed to provide power when a normal supply fails; inside the scope are: custom units specifically designed for the Raspberry Pi; general units more often associated with PC hardware; and "home-brew" devices. (Usually) based on some sort of Battery technology and almost universally designed to replenish them when the normal supply that it stands in for returns.

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Simple UPS by directly connecting 4 NiMh accumulators to power bus? [closed]

I have a Raspberry Pi 4 Model B powered by PoE (using the official PoE hat). Unfortunately, it sometimes gets abruptly disconnected, which sometimes results in unrecoverable data corruption. So I need ...
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45 views

Why does Pi4 running NUT need a reboot after power outage to connect to APC500 UPS

I have a remote Pi4 running Buster and Network UPS Tools 2.7.4. Most of the time it works fine, but after a long power outage and NUT shutdown, the Pi cannot connect to the UPS. pi@raspmountain:~/...
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0 answers
29 views

Battery Information on Raspberry Pi

I am currently using PiSugar 2 Pro for my Raspberry Pi 3B+. While I know that PiSugar has its own server where you can check on battery level, I was looking for a more direct integration with the OS, ...
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114 views

X728 UPS email setup

I`ve got an X728 ups hat and is working right, using the .sh provided by geekworm. What I expect next is to write some code make the .sh to send an email when power is down or up, or when batteries ...
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-1 votes
1 answer
200 views

edit UPS HAT safe shutdown script

I write this since I need advice with an RPi Hat that I purchased and the assistance told me to find a solution myself! I purchased an UPS HAT (UPS3 from geekworm). I need to perform some actions ...
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1 vote
2 answers
146 views

i2c values for UPS-Lite v1.2 report 0 in python, but correctly in cli

I have a Raspberry Pi Zero WH and I'm trying to read the voltage and capacity values in Python from my UPS-Lite v1.2 battery, but they're reporting zeros despite the CLI showing differently. I've read ...
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0 votes
1 answer
71 views

PI Supply, UPS, Pins used

currently I am working with the Raspberry Pi Zero W to build a UPS. Therefore I bought the UPS hat from Pi Supply. Nevertheless, I have to use 2 Pins for my measurments with the JSN-SR04T-3.0. Which ...
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1 vote
2 answers
64 views

Do I need to use a UPS with my RPI?

Whilst I am OK with software, hardware especially electronics is not my field. I have an RPi. It is enclosed in an water-proof case apart from an aperture that lets out a usb-c cable. Inside this ...
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1 vote
2 answers
972 views

Rpi4B Smart UART UPS PSU Troubleshooting Problem

I have a MakerFocus Raspberry Pi 4 Battery Pack (Amazon). Trying to figure out the serial interface for it but documentation isn't great. I've found only this packet so far that the board sends: ...
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80 views

UPS for Pi 3B and hdd

I'm quite new to the Pi world, but I need a UPS unit to power both a Raspberry Pi 3B and a 2.5'' hard disk used by the Pi. I thought a power bank could be the right choice for me, but I cannot find a ...
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37 views

Fast turn off of a Pi in embedded applications [duplicate]

Is there any documentation about what the Pi is actually doing during its (excruitatingly) slow power down ? I want to build a Pi4 into a product that will definitely have the power cord pulled on a ...
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1 vote
1 answer
84 views

Most recommended power-supply option from dual-port Powerbank

I have a Raspberry Pi 3 model B [1]. It's powered by a DC adapter that outputs 5.1V and 2.5A. Although I consider ocassional manual reboots, I'm planning to use a Powerbank as some kind of UPS, after ...
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1 vote
0 answers
258 views

Raspberry Pi UPS with LiPo Battery

I have been working on a battery back up for my raspberry. The idea is classic: connect power bank to wall outlet and raspberry to power bank output. It works well with only battery power. But when ...
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1 vote
2 answers
2k views

How to make ups hat run safe shutdown on raspberry when disconnected from the power source

It can be long discussion, because there is no single solution around this, so, to cut the story short, I will tell where I stuck on my way. It is AndroidAuto (media centre in car on raspi) project I'...
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1 answer
914 views

Detecting when a UPS kicks in

So, this is probably a matter of buying the right UPS but I am currently using a Pi to control my aquarium via relays. I'd like to hook the whole system to a UPS in case of powerloss. Ideally, I'd ...
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1 answer
181 views

Using Geekworm UPS HAT while powering the raspberry pi from micro usb?

I recently ordered a Geek-worm UPS HAT Board included with a 2500mah Lithium polymer battery. Can I connect this to my raspberry pi and power it on and then provide power to the raspberry pi through ...
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1 vote
2 answers
475 views

Raspberry Pi UPS - Thoughts for off shelf items

I've been looking at off the shelf raspberry pi UPS/shutdown controllers. I've come up with 4 and wanted somebody to weigh in on the choices. My use case is pretty strait forward. I want the pi to ...
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1 vote
1 answer
321 views

Uninterruptible Power supply for PI 2 B+

Will it be possible to provide short term power to the B2+ model with the following setup? 5V 2A 44W Uninterrupted Power Supply Alarm System Security Camera Dedicated Backup Power Supply 6-10 Hours ...
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1 vote
1 answer
550 views

UPS Pico - Change Shutdown time delay

I've got a UPS Pico for my Raspberry Pi (https://www.modmypi.com/raspberry-pi/power-1051/ups-boards-1051/ups-pico) and it works perfectly except for the fact it takes about 1-2 minutes to actually ...
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0 votes
0 answers
349 views

Using Raspberry Pi Zero W connected to LM7805 or dc buck converter from UPS LEAD acid battery

Planning to build battery backup for raspberry pi zero w that last for days from 12v lead acid PC ups battery. Parts PC UPS, https://www.youtube.com/watch?v=-Ur-D37-juo LM7805, https://www.ebay.in/...
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10 votes
1 answer
11k views

How to make a simple, reliable 15-second UPS for shutdown?

Use case: On power loss, the pi is to gracefully close all I/O (already kept to a minimum) and shut down, to be manually rebooted later. A supercapacitor works (I think; not sure of voltage near the ...
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1 vote
0 answers
352 views

Raspberry pi UPS with dual power supply

I'm now building a project with a raspberry pi, and GPS module, a touchscreen and a UPS. Now, when I use the UPS, I need to supply power from the UPS to the pi. However, the soyrce o the power will ...
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  • 115
7 votes
3 answers
8k views

NUT + CyberPower data stale

I've got upsmon (nut-client) and upsd (nut-server) set up and almost fully working on an RPi3. Connected is a CP1500PFCLCD UPS via USB. upsd and upsmon start up perfectly every time. However, given ...
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  • 173
5 votes
1 answer
16k views

DIY uninterruptable power supply (UPS) for Raspberry Pi Zero

I have several pi-zero boards and I utilize them to monitor environmental conditions (such as humidity, temperature and intrusion) of each room in home. For continuous operation, I want to eliminate ...
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1 vote
1 answer
596 views

Raspberry pi shutdown and power back on with UPS

So I have an UPS, but I want to be able to shutdown the pi and power it back on (by pressing a button or so). But I don't know how I can do this... The UPS I'm using is te Geekworm UPS: Someone ...
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0 votes
0 answers
41 views

Raspberry PI UPS that doesn't shutdown the pi [duplicate]

So, I want to make an UPS for my raspberry PI, but the UPS needs to be able to supply power to the pi for several hours. So I mean this: The pi originally gets power from the wall socket, but in ...
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  • 115
1 vote
2 answers
958 views

Battery power supply and safe shutdown on power outage

I'm completely new with Raspberry Pi. In fact I'm just planning to buy a Raspberry Pi 3 Model B, but I don't have anyone yet. I want it to be running 24/7 so I'm worried about power outages. I've been ...
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  • 143
0 votes
2 answers
620 views

Making a battery pack UPS with GPIO signal

I'd loke to build a UPS for in-car use. I am powering my pi with a 12v to 5v DC-DC converter. I'd like to use a phone battery pack as the ones sold at dollar stores with a relay/transistor that sends ...
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2 votes
3 answers
2k views

Easiest way to delay shutdown by a few ms after power loss

I'm looking for the easiest way to delay the loss of power to the pi (for a duration on the order of milliseconds) after the power supply is lost. I'm no good at designing circuits and I'm guessing ...
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2 votes
2 answers
126 views

Year Long Raspberry Pi Timelapse

I am making a year long Raspberry Pi time lapse, I have a script that takes a picture every day but if there is power cut, the Pi turns off, and the script is stopped so I need the Pi on 24/7—any ...
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1 vote
0 answers
492 views

Using external cellphone backup battery as "UPS" for Pi?

I'm currently experimenting using an external power supply (for cellphones) as a type of "UPS" for my Pi. It seems to work quite well. Can anyone think of a reason why this isn't a good idea? I got ...
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0 votes
1 answer
413 views

Drawing 5V from USP Pico when Raspberry not powered

Is it possible to draw 5V from the UPS PIco module when the Raspberry Pi2 is not powered (i.e. when the UPS is powering the Raspberry)? My setup is as follows: The primary source is 12V. The 12V ...
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2 votes
1 answer
2k views

PI2B safe shutdown procedure on low battery and auto start

I have a RPI2B controlling a mobile CCTV setup. System runs on 12V (solar panels + batteries) with a low voltage disconnect (LVD) and PI powered by a buck step-down converter. RPI drives a relay via ...
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1 vote
1 answer
851 views

For how much time does a 600 VA UPS run my RPI 2?

I am planning to buy a 600VA UPS as power backup for my rpi 2. Can someone please help me to find out how much time it can run my rpi? I am running rpi with a 5.3V 2A usb charge and connected a 500 ...
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3 votes
0 answers
1k views

Unable to shutdown Raspberry connected to UPS

I'm quite new to Raspberry world and I need you help :) I've configured my Pi as a small NAS and download station but I also use it to manage some sensors in my house, so I bought an UPS. The ...
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