Questions tagged [power-supply]

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

Filter by
Sorted by
Tagged with
2
votes
4answers
9k views

Is there a code for the power LED blinking (I've noticed a pattern) or is it simply “blinking” and that's it?

I recently got my first Raspberry Pi (model 3 B+) plus a starter kit from Adafruit, and I have encountered my first challenge: boot the darn thing. The starter kit came with a micro SD with NOOBs ...
1
vote
1answer
268 views

Supply 5v to peripheral using solder pads and not GPIO?

This seems like a simple enough question but it hasn't been easy to find an answer! I have a Pi3 (with recommended PSU), official screen, official camera and I've now added the respeaker 2-mics Pi ...
0
votes
0answers
51 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 ...
0
votes
3answers
47k views

Raspberry Pi 3 Model B+ Stable Red Light When Powered Up

I recently got a new Raspberry Pi 3 Model B+ and I managed to flash the OS. But the problem seems to happen when I try to boot it. I do not have the official adapter, but I tried the following: with ...
0
votes
1answer
320 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 ...
2
votes
2answers
5k views

Raspberry pi 3 b+ and 7" touchscreen over poe

I have an issue, i want to power my pi and 7" touchscreen over poe but the raspberry pi poe hat supplies only 2.5 amp. 7" touchscreen requires 2.5 amp and rpi 3 b+ also requires 2.5 amp so i am in ...
4
votes
1answer
2k views

Powering Raspberry Pi Zero when USB OTG is in device mode

I'm using a Raspberry Pi Zero as a USB device, i.e. it is connected and powered via the OTG USB port to a USB host (in this case another Raspberry Pi, but it could be a PC or any other USB host): ...
0
votes
2answers
743 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
2k 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 ...
0
votes
1answer
171 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 ...
2
votes
2answers
1k 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
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 ...
-1
votes
2answers
6k views

How big of a power supply do I need to power a 3B+?

This chart shows the Pi 3B+ drawing upwards of 5.6 W under load. I know they recommend a 2.5a power supply, but is that an exactly accurate number? Would 2.4a be enough? How powerful of a power supply ...
0
votes
1answer
407 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 ...
0
votes
0answers
50 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 ...
1
vote
2answers
73 views

Raspberry Pi 3 Power Issue

I am using Raspberry Pi 3 Model B for my project purpose. The Pi 3 works fine when it is powered through a 5V/2A charger and I am able to use the inbuilt Bluetooth and Wifi using it, but when I try to ...
1
vote
1answer
46 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 ...
0
votes
2answers
970 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
0answers
943 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
1answer
401 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
81 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 ...
4
votes
1answer
405 views

Zero W: Cut USB power lines?

I understand that the Zero W USB port has just the power lines connected to all the power on the board (+5V and GND). I also understand that you can use something like Adafruit PowerBoost 1000C to ...
1
vote
2answers
664 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, ...
4
votes
2answers
773 views

Can I fix my bricked RPI3?

I've been having problems finding a good 2A+ power supply around the house that would stay above 5 volts but no dice. So I gave up and tried powering from a bench power supply to a variable dc-dc step ...
0
votes
1answer
1k views

Raspberry Pi 3: DC motor power supply problem

I'm newbie in electronics. I'm joining RPi's world through a starter learning kit but there's a wiring incongruity in DC Motor lesson: In the 1st image there's only RPi's 3.3V power. In the 2nd image ...
4
votes
2answers
6k 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 ...
2
votes
1answer
4k views

Can I use my S7 edge charger for my Raspberry Pi 3 Model B?

I have no charger atm and I am a bit strict on money right now. Anyways, I have a spare Samsung charger and it has 2 values. 9V = 1.67A 5V = 2A It's a fast charger so I don't know what applies to ...
-1
votes
1answer
136 views

Pi b+ power issues?

I have a raspberry pi b+ with raspbian stretch. My power adapter is rated at 5v 1.5 amp. I have a monitor and network cable connected, USB keyboard, USB mouse and 2 USB cameras connected via the 4 USB ...
3
votes
2answers
2k 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 ...
1
vote
1answer
173 views

Torrentbox Hard Drive keeps unmounting when copying files. How to avoid it?

My external hard drive is connected to a powered usb hub (5v 3000mA) then connected to rpi3. Whenever I copy any file that would take more than 30 sec, it would unmount and I have to mount the next ...
0
votes
2answers
195 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 ...
0
votes
1answer
248 views

Official 7" Display not functioning correctly

The first day I had the display, it booted fine, loaded and worked just fine, however I had a little bit of flickering from the screen. Today I tried to boot again and the screen comes up with some ...
2
votes
3answers
2k views

How many MAX7219 8x8 can a Raspberry Pi 3 power?

I'm trying to figure out how many MAX7219 8x8 LED matrix can a Raspberry Pi 3 handle without the need of external power. I would like to connect an array of 8 but I suspect I'll need an external ...
2
votes
1answer
1k views

Moto Turbo Charger for Raspberry PI 3 Model B

I have recently brought Raspberry PI 3 Model B, however still don't have power supply which give output as 5V and 2A min. Moto Turbo Charger output read as Standard - 5V/2.85A Turbo1 -9V/2.85A ...
1
vote
1answer
118 views

With the Pi Zero W plus a 2.4A adapter, can I safely draw up to 2A from the 5V pin?

Since the Zero W doesn't have a polyfuse, am I right in assuming that the 5V pin can safely supply whatever current the power supply puts out minus the draw from the Zero W board itself (and any ...
3
votes
2answers
266 views

How long does a power interruption have to be to bring down a Raspberry Pi?

I'm working on providing a stable supply of 5V power to a Raspberry Pi over the micro USB input port. One possible issue I've noticed is occasional instantaneous dropouts when switching over from ...
0
votes
1answer
201 views

5.6V with official touchscreen [closed]

As I mentioned earlier I am getting low power warnings with a 5V adapter, and have now obtained another one that says 5.6V. Am wondering if this might work, or if it will damage the Pi and/or the ...
0
votes
0answers
264 views

Using Raspberry Pi with Powerbank Accumulator

I wanted to power my Raspberry Pi 3B plus some sensors and an additional Huawei modem with a Powerbank. When turned on that's no problem, everything works fine. But I want to measure some enviromental ...
0
votes
1answer
54 views

Boot only with usb cable energy

My raspberry worked fine with a 5V-2A charger. From few days, It boots only with the energy coming from the USB cable from my computer. If I use the usual charger, it goes in a boot loop, displaying ...
3
votes
3answers
2k views

Low power warning using touch screen

I have a RPi 3 and a 7" touch screen, powered by a MW GS18E05 adapter. It says output 5-6V, 3.0-2.5A, max 15W. The top right corner yellow flash low power warning shows up when I boot and then it ...
0
votes
0answers
36 views

Power Draw Requirements for multiple components and PI

I am building a rover, that ideally I would like to power from a single 12V Marine Battery. The battery provides power to all the components: Pi3 through a Power Converter 12V LED computer monitor, ...
2
votes
1answer
45 views

How can I limit the power from a battery for my RPi3? [closed]

I am taking an old HP G62-407DX apart, and I have replaced the motherboard with a raspberry pi. With some help on Superuser, I figured out what the display used. Now, I would like to know how to limit ...
3
votes
1answer
211 views

Can someone explain what backfeeding is and how I can protect my Pi from it?

So I read something about "backfeeding" and that it can damage my Pi. What exactly is it? I didn't understand the article. BTW, I'm a complete noob so please try to be as un-technical as possible. I'...
4
votes
1answer
7k views

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 ...
1
vote
5answers
11k views

Powering a RPi with +24VDC for an industrial application

I need to Power an RPi from a +24VDC industrial power supply. The RPi is mounted in a DIN-rail mounting box, in which there is plenty of space. The +24VDC is quite reliable and does not vary by more ...
1
vote
3answers
2k views

Will a power bank short circuit a raspberry pi?

I was wondering if I could make my raspberry pi portable with a power bank however, I think it might short circuit the motherboard and then that would mean bye bye raspberry pi. Is it save to use my ...
1
vote
1answer
368 views

Power Supply for Raspberry Pi Model b [duplicate]

I recently bought a Raspberry Pi 3 and forgot to buy the power supply. Could I use a phone charger (1.5v, 0.75amp) to power the Raspberry Pi 3?
3
votes
2answers
1k 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
0answers
39 views

2 Raspberry Pis 1 Battery

I'm working on a project, here's the deal... I have 2 raspberry pis (3B, and a zero w) and 1 battery (3.7V LiIon 1200mAh). I bought a PowerBoost 1000 (A "DC/DC boost converter module can be powered by ...
2
votes
0answers
27 views

Question about Power supply for Raspberry Pi Zero W V1.1 [duplicate]

I recently got a Raspberry Pi Zero W V1.1 as a gift....and I'm a bit confused about the power requirements for it. I have a 5V~2A mobile-charger and a 5V~1A mobile charger. Can I use any one of the ...

1
3 4
5
6 7
14