Tagged Questions

The methods for powering the Raspberry Pi via sources other than its micro-USB connection.

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1
vote
2answers
155 views

Car computer how to connect to car battery and also not drain battery when the car is switched off

I am doing research on creating a car computer with raspberry pi (so I have all the basics down before I start this project) and I am looking on a way to switch the whole device automatically whenever ...
1
vote
1answer
42 views

Do 5V/3A External Batteries exists? [on hold]

Need one to power my PiHUB so my project gets portable, and I don't need a cable. Unfortunately the battery packs I find on amazon, are 5V/3A ad in: 1 USB 5V/2A, and 1 USB 5V/1A ... so 2+1 = 3A ...
1
vote
1answer
40 views

Portable power supply for a PiHub?

I love my PiHUB and would like to have a or table power source, so I can make my projects mobile :) Is there any product that I could use? It uses 3A 5.2V. Alternatively I'd appreciate any ...
1
vote
0answers
56 views

UPS for raspberry pi

I want to be able to power my pi like a smartphone (ie from battery or from mains (while charging the battery), hot swappable) I know there are boards like the MoPi that achieve this, but the ...
0
votes
1answer
62 views

Powering multiple full-size bulbs

I'm working on a Pi project where I will need to have 4 lightbulb turn off and on based on schedule. The programming aspect is no problem but I'm guessing the GPIO pins are not powerful enough to do ...
2
votes
0answers
78 views

Raspberry power supply via PoE (power over ethernet) [duplicate]

is it possible to supply a raspberry pi via PoE? if not - why :D ? kindly
2
votes
2answers
236 views

Can I use an ATX power supply to power a graphics card, the USB3380EVB and a Pi?

I am going to plug a GT4640 using the USB3380EVB. This board connects to the USB slot of the Pi. The USB3380EVB has his own power supply which provide energy to the GT640. I am concern about ...
0
votes
0answers
129 views

RPi shutting down after powered from 5V pin

My RPi is working fine and automatically connecting to wifi when powered from USB but when I try to power it from a regulated 5V supply on the extension headers I can see that it goes on but then ...
0
votes
1answer
478 views

Powering motors using seperate power source and relay circuit ?

I'm looking to make a toy car using the raspberry pi. I've figured I can power the pi using 6 AA's and a voltage regulator, and connect to the 5V and a GND pin (pins 2 and 6 I think). Then power the ...
3
votes
2answers
1k views

How many volts can you safely connect to the Pi?

I want to purchase this power supply (battery pack) for mobile projects (I know, it isn't a lot of power), and I was wondering if, with a bit of modding, like adding a micro usb tip to the power or by ...
5
votes
5answers
10k views

Powering a PI from 12V

I'm thinking of installing my Pi down at my wife's stables which have a 40W solar charged 12V DC lighting circuit. Since the Pi runs at 5V I'm thinking that a quick and easy way to step down the ...
4
votes
4answers
12k views

Powering the raspberry Pi from USB + microUSB, is it safe?

I want to power a Pi model B from a powered USB hub. I got surprised that the Pi powers on with only the USB attached. A little search in the forums confirmed me that it is a working solution. I ...
1
vote
3answers
4k views

Suitable power supply for DC power through GPIO

I'm trying to follow this tutorial on adafruit, which powers the Pi, and a 1 metre LED strip, through the GPIO using DC. I'm not sure however what power source to use as I'm not very experienced with ...
5
votes
1answer
3k views

Waterproof solar battery enclosure for my Pi?

There are numerous topics out there about powering Raspis from batteries or from solar or just making a waterproof enclosure... But I'm a programmer, not an electrician. I would end up plugging the ...
4
votes
2answers
2k views

How long can a RaspberryPi run for on 4 or more AA batteries?

I'm looking to power my RaspberryPi via rechargable batteries, but I would like to know how long can it run for running X number of batteries. I want to eventually be able to mount it outside and ...
8
votes
2answers
3k views

Powering Raspberry Pi and other USB devices through a single USB Hub

I bought a powered 7-port USB Hub, which has 7 downstream ports, 1 up stream port and one power port. My question is can I connect both Raspberry Pi and the USB devices that I want to use with ...
6
votes
2answers
3k views

Can the USB ports be used to power the Raspberry Pi?

Does the power need to be supplied via the micro USB port or can one of the two normal USB ports be used as well? I intend to use SSH only, so the USB port would not be used in any other way, but I'd ...
2
votes
1answer
637 views

Dual Power Supplies (Redundant/Spare/Backup)

I have two separate power feeds presented as either two IEC C13 or two UK 3 Pin sockets (the choice is mine). I would like to connect my Pi to both power feeds so that if one power feed fails, the Pi ...
7
votes
1answer
943 views

If I power my Pi from GPIO, can I detect that it's not being powered by USB?

I'd like to create a backup power solution for my Raspberry Pi, and I'd like a notification to come up that the Raspberry Pi is running on this backup power. This notification has to tell me that ...
3
votes
3answers
634 views

Trouble powering pi from batteries

I have an 8-cell NiMH battery pack (10V) connected to a UBEC voltage regulator, so that it provides a constant 5V as the batteries discharge. This is wired to the micro-USB connector that's connected ...
51
votes
11answers
41k views

How do I build a UPS-like - battery backup - system?

As we all know, the Raspberry Pi doesn't really use that much power (5v + 700mA is the spec). I'd like to build a battery backup for power outages in a DIY-ish fashion. I don't need surge protection ...
26
votes
6answers
12k views

Powering without using the micro USB

Is it possible to power the device without using the micro USB? For example, is it possible to use PoE (Power over Ethernet)?
78
votes
4answers
19k views

How can I run the Pi on Solar Power?

Has anyone successfully set up their Pi to run on solar power? If so, what would be the cheapest way to sensibly and reliably achieve this, using a combination of solar cells / batteries / voltage ...
51
votes
10answers
20k views

What do I need to know to power from batteries?

What voltage range can it accept? What sort of batteries are appropriate?