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.
31
questions
1
vote
2answers
33 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 ...
0
votes
0answers
66 views
Alarm system built with raspberry + sonoff rf bridge
I am developing a personal project at the end of which I should be able to create a sort of homemade alarm system.
All this should be proof against voltage drops / failures, the whole circuit will be ...
0
votes
1answer
43 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 ...
1
vote
2answers
56 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 ...
1
vote
2answers
583 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: ...
1
vote
0answers
55 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 ...
0
votes
0answers
36 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 ...
1
vote
1answer
67 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 ...
1
vote
0answers
213 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 ...
1
vote
2answers
1k 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'...
0
votes
1answer
696 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 ...
0
votes
1answer
166 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 ...
1
vote
2answers
458 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 ...
1
vote
1answer
304 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
...
1
vote
1answer
502 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 ...
0
votes
0answers
333 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/...
9
votes
1answer
9k 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 ...
1
vote
0answers
341 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 ...
5
votes
2answers
5k 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 ...
5
votes
1answer
15k 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 ...
1
vote
1answer
587 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 ...
0
votes
0answers
36 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 ...
1
vote
1answer
881 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 ...
0
votes
2answers
561 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 ...
1
vote
3answers
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 ...
2
votes
2answers
116 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 ...
1
vote
0answers
469 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 ...
0
votes
1answer
236 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 ...
2
votes
1answer
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 ...
0
votes
1answer
651 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 ...
3
votes
0answers
899 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 ...
