Raspberry Pi Stack Exchange
Raspberry Pi Stack Exchange

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.

For the main RPi units there are at least the following custom items:

  • Pimodules UPiS "Basic" & "Advance" models (26-Pin GPIO) and the later "Pico" model (40-Pin GPIO).
  • CW2.Pi New "+" version due January 2016
39 questions
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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 end) but reboots the Pi (not sure why exactly). A…
kaay
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4 answers

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 about 2-20 hours of uptime, a "data stale" error…
Malachi
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6
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2 answers

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 power blackouts. So, I decided to make a basic UPS…
vaha
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2
votes
2 answers

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 the power bank is plugged to the wall at the same…
Frederick van Lingen
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2
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3 answers

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 that it's a bit more complicated than just sticking…
schmop
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2
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2 answers

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 ideas? BTW I am using PoE to power the Pi because I…
adam kearn
2
votes
1 answer

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 a MCP23017 port expander + transistor etc on a…
Jacek Radajewski
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1 answer

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 UPS is an APC Back-Ups Pro 900 and I correctly…
matteodv
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1 answer

How to set up Raspberry Pi to shutdown and boot based on whether UPS is plugged in or not

I am building a golf cart and want to install a Raspberry Pi as a dashboard computer for it. For this purpose, I am using a Raspberry Pi 4 model B and I have a RPi UPSPack V3 for a UPS. I have it wired up so that when I power on the golf cart the…
richzrich
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3 answers

Do I need to use a UPS with my Raspberry Pi?

Whilst I am OK with software, hardware especially electronics is not my field. I have a Raspberry Pi. It is enclosed in a water-proof case apart from an aperture that lets out a USB-C cable. Inside this case are my RPi and a USB power pack powering…
user11286
1
vote
1 answer

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 ensuring that it's capable of taking AC power to…
Pestro
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vote
2 answers

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'm currently working on, and I'm stuck on…
EKreger
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1 answer

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 and Micro USB 5 Pin Male To DC 5.5x2.1mm Female…
ccpizza
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1 answer

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 turn off the Pi. Is there a way I can reduce this…
user1147964
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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 come from a car-power-supply. Now, I have a maximum…
Robin
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