Questions tagged [power-supply]
The methods for powering the Raspberry Pi (typically via its micro-USB connection.)
138 questions
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Raspberry Pi Power Limitations
There are very many, often contradictory, claims about the power requirements and limitations of the Pi.
What are the exact requirements?
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How do I supply power through the GPIO?
I have seen some examples of people powering their Raspberry Pis by wiring a DC "barrel plug" style power supply to the 5V and GND GPIO pins.
What considerations should be taken when doing something ...
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How do I turn off my Raspberry Pi?
Should I just pull the plug? Or is it best if I exit LXDE and any other running processes first?
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Rpi freezes every now and then, how to fix it with a watchdog?
I'm building a system with a raspberry pi located in a very remote area connected to internet with an internet stick. The tests are promising so far but the pi freezes every here and then and I'm not ...
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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 ...
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Choosing a Pi4 power supply
I'm trying to decide what is the best option for powering a Pi4. The specs mention for a minimum of 3A. Let's consider we would also like to connect a 2.5" drive to the Pi4. Could someone more ...
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Use MacBook charger for Raspberry Pi 4
I am using the official 15.3W USB-C Power Supply to power up my Raspberry Pi 4.
I got my self a second Raspberry Pi 4 but I haven't bought the power supply yet.
Would I be able to use the Macbook ...
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Current draw for +/2/3/0 models
Essentially "What's the current draw and supply voltage tolerance?" but for newer models.
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How much energy does the Raspberry Pi consume in a day?
My searching efforts have failed when trying to find this. On average, how much energy does the Raspberry Pi consume in 24 hours (minimal usage vs. max usage in a day and USB vs. Micro-USB powered)?
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How to make a splitter cable for the USB2 OTG port on the RPi 4B?
According to the answer to Where is the USB2 OTG port on the RPi 4 Model B located? the Raspberry Pi 4B has a "hidden" OTG port in the USB-C power connector. I found at Very simple OTG on pi4 and at 4 ...
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Raspberry Pi 3 vs Pi 2 power consumption and heat dissipation
I've seen the announcement of the new Raspberry 3 but didn't find any info regarding power consumption and heating.
A 1.2 Ghz 64-bit CPU is great but does it draw a lot more power? Shall heat be an ...
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What's the current draw and supply voltage tolerance?
What's the current draw when the Raspi is at idle (min), and at 100% CPU/GPU (max)?
(With no peripherals/accessories plugged in)
What's the minimum and maximum voltage allowed to run the Raspi stably?
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What's the problem with backfeeding?
New to the Pi, so new in fact that my very first (a B+) hasn't even arrived in the mail yet...
I know that "backfeeding" or "backpowering" refers to powering the Raspberry Pi via a powered USB hub ...
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How can one control AC power (220V) with a Raspberry Pi?
I though about using the Raspberry Pi to switch on and off other electrical devices which unnecessary consume power in stand-by mode. In short, I'd like to control an AC socket or multiple sockets. ...
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How do I modify my Raspberry Pi to be powered over PoE?
Is it possible to modify the Pi, so that it can receive it's power via Power over Ethernet (PoE)?
I would like to be able to power my unit via the ethernet cable, so that I don't have to worry about ...
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Can I feed the device with a current rating that's higher than what's recommended?
The quick guide says that the power supply for my Raspberry Pi model should provide at least 700mA.
How about the upper bound? Is it fine to use a power supply with an high output current, say higher ...
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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 ...
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2 amp power supply for RPi2. Too much current?
I'm currently using a 5V 2A power supply; not sure if it is appropriate because some answers say that the max safe current is 1.2 amps. I'm a little confused about this. Is it safe to use my current ...
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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 ...
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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)?
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Will any external battery power a Raspberry Pi?
I am working on a project that needs the Raspberry Pi to work without a mains connection.
I have considered buying a 50000mAh USB power bank. Would this power a Raspberry Pi, and if so, would it ...
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Powering from a non-dedicated power source
While the quick start guide says not to power the device from a USB hub or from a computer, the only requirements for power listed are:
Micro USB power supply – make sure you use a good quality one,...
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Circuit to safely power-down Pi
I want to use my Pi as an XBMC server in the car. The XBMC docs say that you should always use the shutdown command before disconnecting the power.
I've been thinking that it should be possible to ...
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Can I power a Pi through a 5V pin?
The PIN mapping of the Raspberry 2B says:
The red ones are 5V pins. Are these just used as 5V out pins when power is connected through Micro USB? Or is it also possible to power the Raspberry Pi via ...
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Powering the Pi 4 - safe voltage levels and current requirements
How to safely power the Pi 4, more specifically:
What voltage levels are safe to power the Pi 4 via the USB-C connector or via the GPIO header?
What are the current requirements?
What Power ...
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Is there any point to a 2.0A (or greater) power supply, given the 1.1A polyfuse?
My question: it's my understanding, based on the official Raspberry Pi FAQ, the wiki, and numerous forum threads on Stackexchange and elsewhere, that the Raspberry Pi has a 1.1A polyfuse on the micro-...
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How can a 12VDC power supply stepped down to 5VDC for Rpi?
Good day,
I have a Raspberry Pi Zero W that I would like to deploy onto a tower that is supplied with 12VDC power from a photovoltaic solar panel.
I'm currently looking at powering the Pi Zero W ...
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How to add Capacitors to Raspberry Pi
My goal is to add capacitors to the Raspberry Pi power-supply.
Currently I have my raspberry Pi plugged straight into a portable 5v battery, this works fine.
However, I want to be able to swap from ...
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What do I need to know to power from batteries?
What voltage range can it accept? What sort of batteries are appropriate?
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What can I use to power my Raspberry Pi Zero with rechargeable battery?
Is there a 5 V rechargeable battery and cables compatible and comparative in size with Raspberry Pi Zero?
I don't want to have to plug my Raspberry Pi in every time and nonrechargables get ...
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Can I power Raspberry Pi using the mini USB to USB cable connected to a computer?
My question is quite simple. I'm asking if I can use the power cable you get along with it as a USB power supply. Instead of plugging it to a power socket, can I use the USB to connect directly to my ...
user8830
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Powering a 3-12V water pump on raspberry pi
I've got a 3-12V water pump, a raspberry pi, a relay (5V 10A/120VAC, and a breadboard power supply supply 3V-5V.
The questions are :
Is it possible, to rspi to breadboard power supply usb, and a ...
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What are the cooling requirements for Raspberry Pi 3?
The new Raspberry Pi 3 has been beefed up from the previous version. Now it comes with a Broadcom BCM2837, which is an ARM v8 quad-core Cortex-A53, clocked at 1.2GHz. I have also seen somewhere a ...
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Powered hubs, backfeeding and safety
I've got my RPi set up as a media centre, running Raspbmc, using a powered hub to run a bunch of peripherals including terabyte external HD and a hacked-together IR remote.
All very nice, but it's ...
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Powering Raspberry Pi via battery pack and buck converter - how to solve low voltage reboot issues
I'm trying to power a Raspberry Pi 4 via a 6-AA battery pack via buck converter which steps it down to 5V but it gets stuck in a reboot loop on boot up.
Watching the display on the buck converter, the ...
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Cut power supply to pi after shutdown and power on after button press
I am building a pi project that is battery powered and is powering something through the 5V GPIO. What I want the pi to do is to start up on a button press, do its thing and turn itself off again ...
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Turn on pi at specific time with RTC to save battery
I'm looking into powering my raspberry pi via a powerbank. I already have a button and a relay to turn it on manually and when the pi shuts down flip the relay back to off position. Now I would like ...
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mix power and data for usb HDD
I have a raspberry pi being powered by a cellphone charger (1A)
I try to connect and HDD but the power is not enough. I don´t have a powered USB hub BUT i do have other power supplies. So I tried ...
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Powering Raspberry Pi 4 'on the move' using power bank [closed]
There are good official resources that state that recommended power supply must be 3 amps (e.g. official RPi power supply via mains). However, for use 'on the move' or remote locations this may not be ...
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Powering RPi 4 Model B with 5v 3A Car Power Supply Module
I would like to use a buck converter between a 12V DC power supply and my RPi4, and found this car power supply to be appealing. It claims to step down from 12V to 5V 3A, which is almost the same as ...
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Strategies to deal with unpredictable power supply
I want to install a Pi in my car and use it to record GPS data. What strategies (in my program) can I follow to minimize problems due to power being interrupted when writing to the SD card?
So far I ...
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Does the Raspberry Pi 3 regulate the voltage on its 5V pins?
I need to supply 5v analog power to an adc. I am supplying the pi with Li-ion batteries, so the voltage falls over time, but does remain within range of the pi's required input.
If the input voltage ...
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Preventing SD card corruption in the event of power failure
I have a project that uses Pi's in remote locations (roadside cabinets dotted around a city next to important bits of water infrastructure) to read data via USB from some specialised data collection ...
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Powering the Pi with 2 AA batteries
I've tested the Pi with a single 3.7V 18650 battery and this < 5$ power boost/power bank.
It works, and this single battery runs for at least 1.5 or 2 hours.
(Sidenote: during my tests, the ...
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Powering Raspberry PI With Broken Micro USB Connector
The Micro-USB port has been brutally ripped off from the PCB on my Raspberry Pi along with traces connecting it.
I know that I can power the device from GPIO 5V and GND, but there will be no ...
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Power led randomly blinking every 1 minute on b+
I've just bought my rpi b+. Power supply for raspberry is 4.94V (which is in appropriate 4.75-5.25Vrange).
Raspberry pi working good, but there is one possible trouble. I don't know why, but power ...
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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 ...
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Powering WS2812B LED strip from Pi brownouts
I have a Raspberry Pi 3 Model B currently controlling and powering a strip of WS2812B LED's. A separate 5V 15A power supply powers the Pi through pins 2 and 6, while the LED's are powered off of pins ...
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rPi2 model B v1.1 smoke comes out near power port
I am trying to control 2 motors using the E-gizmo Motor driver shield but suddenly smoke comes out near the power port of the raspberry pi 2 so I immediately unplugged the power supply. After that, I ...
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Raspberry Pi 3 Power supply - chargers for mobile phone
I ordered new Raspberry Pi 3 for testing Win 10 IoT. Have a question about power supply.
I have two chargers for mobile phone and which one do you recommend to use:
Sony Xperia Z2 = 5v 1500mA
Galaxy ...
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