Questions tagged [power-supply]

The methods for powering the Raspberry Pi (typically via its micro-USB connection.)

Filter by
Sorted by
Tagged with
131
votes
7answers
28k 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 ...
0
votes
2answers
8k views

12V DC buck converter to power Raspberry Pi

I found a DC-DC buck (step-down) converter on amazon that will drop my 12V supply to a 5V 3A max with micro USB already attached. can anyone foresee any issues with using this following product in ...
0
votes
2answers
994 views

Powering Raspberry Pi 3 with 5v/3A Buck converter

I am using Raspberry Pi 3 with Raspbian OS. I will be powering my Pi 3 board from a output of 24V battery. So I will be using a 5V/3A buck converter. I will be connecting my GPS, Pi camera and 4G ...
95
votes
14answers
150k views

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. ...
2
votes
2answers
5k views

Pi 3 not turning on red LED only lights up and the green LED lights up for 2 seconds before turning off

I am trying to turn my Pi on but it is not turning on. Only the red LED remains on without blinking. The green LED is on during startup for 2 seconds and then turns off. I have tried many power ...
0
votes
1answer
32 views

wifi - WiFi sometimes does not work

When I powered the Raspberry Pi 3B on (I use Gentoo), WiFi was working. After reboot, it stopped working, both ip link list and ifconfig commands do not list it (they do if WiFi is working). I am ...
0
votes
1answer
44 views

Using Raspberry in Nanosatellite [closed]

I want to use raspberry pi in space projects like cubesats. I worry about effects of space radiation on raspberry.Is this possible to do?or i need to choose another board or something like that?
1
vote
1answer
1k views

Not enough power to the Raspberry Pi B+

I have a problem with my Raspberry Pi B+. First the problem was that I didn't get the keyboard or mouse to work and I have now found out that the Pi do not get enough power. When I looked on forums, ...
4
votes
1answer
14k views

Can I power a Raspberry Pi 3 with a Smart TV's USB-Port?

We use a Raspberry Pi to display infos on a TV. The content is more or less HTML with some Animations. Currently we use a Pi2 and the power does not seem to be a problem. Recently we came up with the ...
0
votes
1answer
65 views

Automatically bring back the Pi while it shutdown

I've experienced several P3B+ automtically shutdown cases, by skiping the analysis of the root cause, I wonder what is the solution to automatically bring back the Pi again while it shutdown, I mean ...
4
votes
4answers
6k views

Battery pack for model B RPI, Thoughts?

Thinking of getting the battery pack linked to below for my model b Raspberry pi, i am wondering if anyone knows anything about it and how could it is because for first glance it looks amazing. Thanks ...
71
votes
3answers
115k views

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)?
0
votes
3answers
2k views

Powering RPI 3 and using relay from same source

I want to build something of a smart home device such as a smart switch /outlet for example that controls something like a light. However, I don't know what the wiring should be Like, if it's possible....
1
vote
1answer
269 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
votes
2answers
155 views

underVolt shows but DC meter +5

volt and current measurement dongle from power supply shows 5.00 volts within 4% and current is less than 500 ma but lightning bolt showa undervoltage. WHY?
3
votes
2answers
807 views

Two power supplies for RasPi and SSD. Does it work?

I'm planning to connect some old SSD what I've already to my RasPi3B. I ordered cheap SATA-USB adapter cable from ebay. It has two USB-a plugs, one is for data and power another is only for power. ...
0
votes
2answers
373 views

Powering a number of Pi from a single bench top power supply [closed]

I'm thinking of investigating the Bitscope Blade QUATTRO to host up to forty boards. Looking at the details each Blade can power the boards off a single supply, which need not be at 5V with up to 3A (...
1
vote
1answer
806 views

RPi 3 B+ under voltage with Retropie

I recently acquired a brand new RPi Model 3 B+ and decided to try and install Retropie (v4.4) on it. I managed it to boot properly and I got a PS3 controller to work via USB. The problem is that I ...
0
votes
2answers
832 views

Rpi Zero W ( not Rpi 2,3 ) - power consumption, idle and GPIO operate [duplicate]

Spec wise - all raspberries require 5v 2A input. My project needs multiple remote rpi’s to send periodical status of GPIO using python script ( runs on Raspbian Strech Lite ). Is a 2A a must ?
1
vote
1answer
138 views

Official power supply not working (no LEDs)

I just bought a new Raspberry Pi 3 Model B+ with the official power supply. When inserted, it does absolutely nothing. None of the LEDs light up, with or without an SD card. However, a cheap phone ...
1
vote
1answer
82 views

Power LED blinks at first boot, but fine during second boot

I have a Raspberry Pi 3 Model B+. When I turn it on, it works fine but the red PWR LED keeps blinking. Everything else works fine, with no issues, but when I power it off and turn it on again, then it ...
7
votes
5answers
1k 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
2k views

Can I provide 1A, 5V to Raspberry Pi Zero W

I want to design a Power Supply Unit(PSU) for Raspbery Pi Zero W. I will have a camera https://www.raspberrypi.org/products/camera-module-v2 connected and running, two relays and few gpio's running. ...
0
votes
2answers
135 views

Is there a way to control the power output from raspberry pi3?

I'm new to electronics and I'm thinking of building a small racing car. I have this toy car that has a DC motor and a servo motor to control the direction of the car. My plan is to write some software ...
0
votes
0answers
1k views

lightning bolt on first powerup

I purchased the CANAKIT Raspberry pi with the Canakit power supply. I purchased the pre-loaded microsd card. On first power up I got the rainbow and the lightning bolt (no menu) I've tried 3 alternate ...
1
vote
0answers
227 views

Hardware setup for LED with external power supply

I am looking for help to use a raspberry pi 3 as a multiple LED switcher. The setup should be: 6 LEDs at 3W, 9.6V and 300mA (each!) a external power supply for the LEDs a breadboard to put everything ...
5
votes
2answers
13k views

How to configure Raspberry Pi in my car [closed]

I have a plan to put a Raspberry Pi in my center console of my 2012 Nissan Maxima. I'm new to Raspberry Pi, but have experience with technology of this sort. In the center of my car, I have a: USB ...
1
vote
1answer
277 views

Supply 3.3V sensors using GPIO pins

I am using a RPI zero to receive some data from sensors. All these sensors use 3.3V supply. A teacher gave the idea of using the GPIO pins(not the VCC's itself) to supply power to the sensors, so ...
6
votes
5answers
26k views

Multiport power supply for powering multiple Pi's

I would like to run about 4 or 5 Pi's at once and in searching the internet for a multiport power supply, what comes up is chargers. Does this semantic difference (power supply versus charger) matter ...
0
votes
0answers
41 views

Power supply for prototyping with Raspberry PI and motor

I'm going to be working on controlling a motor from the RPI board. The motor needs 12V. I'm thinking of buying a single power supply, to supply both the RPI and the motor with during prototyping. For ...
4
votes
2answers
617 views

Raspberry Pi (Low) Power - Damage?

If the Raspberry Pi B+ is not receiving enough power and I try to use it, will it damage my Pi or peripherals?
0
votes
1answer
186 views

usb to eth adapter hot-plug on pi zero w causes reset

RPi zero w v1.3 running RASPBIAN LITE stretch I would like to use an ETH adapter to connect to the pi, but if I plug it before starting the system all works fine, while in case of hot-plug it causes ...
0
votes
2answers
518 views

Power Pi Zero with 3.5V?

I have an old, completely analogue phone-entry system in my flat. I'd like to play with using a Pi to interact with it, e.g. sending a notification to my phone when the buzzer rings. I've measured ...
3
votes
3answers
1k views

How to protect Raspberry Pi when powering via 5v pin?

I have reglaurly heard that while it is possible to power the Raspberry Pi via the 5v rail, you do so at your own risk. This is because the rail lacks any of the protections that the USB port has ...
2
votes
2answers
712 views

Diagnosing power supply issue

I am running LibreELEC 8.2.4 on a RPi3B. I have attached a USB disk BUFFALO HD-PNTU3 (1To). For the last week the disk has shown some issues which may be related to low power (making some noise while ...
0
votes
0answers
48 views

Power supply or pi card?

I have a pi sd card with raspbian on it. The version of the Raspberry Pi I am using is the Pi B 2 When I tried to boot it up with a normal power supply (micro-usb) it started to boot fine, but it got ...
0
votes
1answer
158 views

Raspberry Pi power supply

This has been asked and answered many times, but my specific question is not in the list of results when I search. I have a nominal 2.6A supply here, and it remains stable at 5V up to exactly this ...
0
votes
1answer
8k views

Raspberry Pi 3B+ won't boot; red LED blinking [duplicate]

I just got a new Raspberry Pi 3B+ with the official case and official power supply. When up, I get a blinking red LED, and on the screen (HDMI) I see a big rainbow-ish square and a lightning symbol in ...
5
votes
2answers
986 views

When to power GPIO projects from external power source?

I am working on a home automation project using: rPi 3 with 2.5 A power source 3 x MCP23017 for GPIO port expansion 3 x 8 ch solid state relay board by Sainsmart 20 x physical wall switch (future) ...
0
votes
1answer
403 views

What is it about the redesign of the new Pi 3 B+ power supply that's discussed here? [closed]

Today's announcement at raspberrypi.org: Raspberry Pi 3 Model B+ On Sale Now at $35 describes several improvements. In the linked YouTube video changes to the power supply are discussed between 04:30 ...
1
vote
1answer
42 views

Pi and h-bridge power issue

I am following this tutorial in my attempt to create my first Pi based robot. I am using a Pi 3 model B and I believe I have things wired up correctly however while the H-Bridge is powered up, the Pi ...
29
votes
5answers
29k views

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 ...
0
votes
0answers
656 views

Disable Power Over HDMI

I built a Retropie using a PI Model 3B that is powered via the GPIO pins. Specifically with this case which adapts micro usb to the GPIO power. Everything works fine except when I turn the system off. ...
0
votes
2answers
730 views

Powering Raspberry PI Zero W using IC 7805 Voltage Regulator

I want to know if its possible to power PI zero w using 7805 voltage regulator. Max current rating of 7805 is 1A. What is the max consumption of PI zero W? Would it require more than 1A of current? I ...
0
votes
1answer
286 views

False-positive button press on power interference

I'm having a rather funny issue with GPIO & tactile switch. The issue is as I understand purely electric. My RPi is connected to a cheap usb "Extreme Style 5V 3.1A" PSU. Same power outlet is ...
-2
votes
2answers
73 views

Why RPI need such a high current?

I am little bit confused. All my colleagues tell me that I need 2.5 or 3A power source. Indeed, it does not work with with "smaller" source. However, the general knowledge and this site (and many ...
1
vote
2answers
421 views

Pi keeps turning on and off when I have a number of USB devices

So I have a Raspberry Pi B+ - I've had it for several years now, which I think may be the cause of this problem, though I'm not sure how. Basically, it's fine when I have just a keyboard plugged in, ...
1
vote
1answer
4k views

Will an anker powerport+ work to power multiple pi's?

I'm not an electrical engineer so apologies for the rather basic question. I've found myself with multiple pi's and felt it was about time to look for some other power solutions other than powering ...
0
votes
2answers
167 views

Multiple problems with my Raspberry Pi 3

I am not new to the Pi 3 and now have it for quite a few months now. However, I started to face multiple problems: My pi 3 would shut down and restart when I was working on it. At a time, only the ...
1
vote
1answer
1k views

dtoverlay=gpio-poweroff not working on raspberry pi 3 B

Problem: I have a Raspi 3B rev: a02082 (Q1 2016 3 Model B 1.2 1 GB (Mfg by Sony)) running raspbian jessie kernel 4.9.35-v7 I want to signal to a power management circuit that filesystems ...