Questions tagged [power-supply]

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

Filter by
Sorted by
Tagged with
4
votes
1answer
3k 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 ...
12
votes
4answers
12k views

Can I use a standard PC power supply to power a Raspberry Pi?

Can I use a standard PC power supply to power a Raspberry Pi, e.g. iMicro IM400W 400W ATX12V Power Supply (or just take one from an old unused computer)? Amazingly, these things are sold starting from ...
1
vote
1answer
302 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?
1
vote
3answers
975 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 ...
7
votes
1answer
5k views

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 ...
3
votes
3answers
4k views

How to control a 3V laser from GPIO

What's the best way to control (turn on and off) a low-power 35mA 3V laser from a Raspberry PI GPIO pin? The RPi GPIO pins support the right voltage but each can supply only a maximum of about 16mA, ...
0
votes
0answers
37 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 ...
1
vote
0answers
26 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 ...
0
votes
0answers
76 views

Accidentally fed 12V to the 5V-pin of Rpi2 [duplicate]

After it happened, smoke comes out near the micro USB port of the rpi. I replugged the power supply of he rpi but this time, the power LED(red) doesn't turn ON while the green LED keeps on blinking. ...
0
votes
1answer
79 views

Uninterrupted Power Supply needed for Raspberry Pi

We have designed multiple temperature sensors. its executed as well too. but we need external power supply or Uninterrupted Power supply for Rpi. I have chosen power bank ..but it works with only one ...
1
vote
1answer
102 views

Monitor misbehaving with stock power supply [closed]

I just bought a Raspberry Pi 3, bundled with the stock power adapter. When I use this power supply, the computer monitor I've connected to the Pi through HDMI is constantly turning on and off in a ...
23
votes
5answers
2k views

What do I need to know when choosing a dedicated power supply?

This question asks about what you'd need to know to power a Pi from a non-dedicated power source. It also links to the Quick Start Guide, which says: Micro USB power supply – make sure you use a ...
1
vote
1answer
47 views

RCB trip / switch-on can cause Pi to brick?

I have a Pi which is powered by a (official) Pi Power Adaptor (from Amazon). A few days ago, an electrician working in my hose switched off (by accident) and turned an RCB back on. I believe that ...
0
votes
0answers
218 views

How to determine if a USB power supply is safe to use with a Raspberry Pi?

I have a Raspberry Pi 3 that appears to have been destroyed this morning. I purchased a no-brand USB mains charger suitable for UK use (and CE certified) from eBay, and I am almost certain that was ...
0
votes
4answers
109 views

Phone power pack for Pi

Is it a bad idea to power a Pi 2,3, or zero from a mobile phone power pack? I understand that Pi power consumption is as follows, *** Idle *** Raspberry Pi 2 B: 420mA Raspberry Pi B+: 230-240mA ...
1
vote
2answers
901 views

Power Raspberry Pi using two 3.7v Lipo batteries

I was having trouble while booting up my Raspberry Pi powered by LiPo batteries. Ignore the components inside the blue circle I am just connecting the batteries, the darlington transistor and the ...
2
votes
1answer
128 views

I cannot run rpi 3 from 8 battery (14500)

I cannot run rpi 3 from 8 battery (14500) Series circuits 29.6v. I am convert 29.6v through dc-dc converter (XL4005 DSN5000) to 5v. The converter output can be 5A. But I cannot take more than 0.5A ...
0
votes
1answer
129 views

Powering the PI over micro USB with a dumb (PC) power supply?

This is related to some existing questions (eg Powering without using the micro USB), but they don't make clear one specific part. I want to power a Pi from a PC power supply's 5v rail, but I'll do so ...
1
vote
1answer
189 views

Creating a timelapse camera system in the Arctic using a Pi Zero

I am pretty much a total beginner when it comes to Raspberry Pi's and everything associated. Thus, I am relying on the people in this Forum to help me out:) I have a project in Greenland for which I ...
1
vote
3answers
4k views

Supply 3.3V via GPIO header (Pi3)

I need to power a Raspberry Pi 3 via its GPIO header: I have a beefy regulated PSU capable of providing stable 4.98V, which I planned to route to the 5V pins of the Raspberry as stated in this answer: ...
1
vote
1answer
68 views

Power required to run multiple appliances at once

I have an electronics question. I am no electrician and am trying to build an alarm pi Mark2. Currently I have a 12v power supply running through a relay which the pi turns on and off to trigger my ...
0
votes
1answer
77 views

Can a smartphone acts as a power supply to a Model 1A?

I have the following USB MicroB-to-A cable that I use for charging my phone (Samsung Galaxy S7 Edge): I'm wondering if I can power my Raspberry Pi 1 Model A with my phone?! The USB-MicroB end would ...
0
votes
1answer
50 views

How to power an RPi Model 1A with my Mac?

I have a MacBook Pro and a Raspberry Pi 1 Model A. I'm just trying to power the RPi (I need a power source). I've searched hi and low, and the best/easiest solution seems to be finding a USB A male-to-...
1
vote
1answer
626 views

Raspberry Pi not booting up over USB power supply

I am doing some stuff with Raspberry Pi. I have successfully burn my OS on SD card. I am able to boot up the system when I provide power with charging adapter. But when I powered up with my laptop USB ...
0
votes
2answers
2k views

Can I use a Y-cable or Dual-Power cable to get additional power for a single USB powered hard drive?

I'm planning to attach multiple portable 2.5" hard drives to a Raspberry Pi 2 Model B. These hard drives are powered each by a single USB cable, which is a problem, because the Pi does not provide ...
4
votes
1answer
930 views

Safe to power Raspberry Pi 3 with 5.25 v out of BEC?

So I'm using a Lipo to power my Pi 3 and to be safe, I installed a 5v 3A UBEC. Upon checking the voltage output, I saw the BEC was only stepping the voltage down to around 5.25v, rather than 5v. I ...
1
vote
3answers
1k views

Wall plug to usb block to raspberry PI

Would the raspberry pi be damaged or effected at all if I simply took a usb block that you would use for a phone plugged it into the wall and used that for the power with a random micro usb cable?
0
votes
1answer
54 views

Raspberry Pi Zero w/NOOBs preloaded SDcard with Ricos OS selected Boot problem

When I power up Pi Zero, I get to the page to boot into safe mode and the screen goes black for a few seconds and then flashes and shows four colored squares in the top right corner of my screen. If I ...
7
votes
2answers
10k views

Will router's USB port supply enough power for the Raspberry Pi?

I'd like to use the Raspberry Pi as a small server. My Linksys WRT610N router has a rear USB port and I'd like to use it to supply power to the Raspi. That way, the Raspi doesn't need to have a ...
2
votes
1answer
863 views

Zero W Shuts down when connecting usb converter

I just received my Pi Zero W and Pi 3. The Pi 3 works perfectly, the Pi zero boots up nicely but then shuts down when I connect the usb converter... any ideas? I can now obviously not connect a ...
0
votes
1answer
800 views

Touchscreen with extern power supply

So, I have a 7 inch touchscreen from waveshare. The touchscreen works via HDMI to get the image and the power and touch function goes via usb to the pi. So the power comes from the pi... The problem ...
0
votes
1answer
197 views

NO display with raspberry Pi.High voltage at 3.3V output.(Is it dead?)

Recently I was using raspberry pi which was working fine. I tried to use GSM module with it and powered it using the 3.3V pin of raspberry pi and suddenly my raspberry pi rebooted and after it gained ...
-2
votes
2answers
49 views

Help with resistors

I have a raspberry pi 3 that runs on 5.1v but I have a battery that is 7.4v, what transistor do I need so I don't fry the rpb3?
0
votes
1answer
3k views

Rainbow screen, Raspberry Pi will not boot

I just got a new Raspberry Pi 3 Model B. I am trying to set it up and when I plug it in, am only getting the rainbow screen with the little square on the upper right-hand side of the screen. From ...
0
votes
1answer
495 views

Raspberry Pi 3 GPIO disconnect power supply

I have a power supply connected to Raspberry Pi through digital switcher. What I want to do is disable power supply when Pi ends shutting down process. Currently it works like this: There is a script ...
0
votes
2answers
3k views

Powering a Raspberry Pi from a vehicle battery 24/7

I am working on a project where my Pi is always connected to a vehicle to provide its GPS information. Seeing such a device must be always turned on, I am attempting to tap into a battery line that ...
0
votes
0answers
18 views

Why is one of my Rpi3B power lights flashing? [duplicate]

I have a handful of Raspberry Pi 3B systems and one of them is doing something odd. It is working fine but the red power light is blinking. It is linked by serial to an Arduino Nano (to read ...
1
vote
0answers
34 views

Pi rebooting on 1 specific apt-get installation

I am experiencing a very peculiar problem with my Raspberry Pi 3 (model B V1.2), running the latest version of Raspbian (the June 2017 version). Whenever I try to install nginx using apt-get, my Pi ...
3
votes
3answers
296 views

Is it possible to use powered USB hub as power source and Hub on raspberry PI

I would like to use one hub to power Raspberry Pi and use it as a hub. So attached is the diagram: Is it OK that raspberry Pi gets power from the hub and it is the hub? I would like to be able to ...
0
votes
0answers
541 views

xiaomi Power bank for Rapberry pi 3 [duplicate]

Will this power bank Original Xiaomi 20000mAh DC5.1V 3.6A Dual USB Output Fast Charge Power Bank work with raspberry pi 3? If so how long will it last? Do we need any extra circuit between rpi and ...
6
votes
3answers
22k views

Undervoltage rainbow despite good power supply

I have my Raspberry Pi 2 since a week and noticed that little rainbow on the top right corner of the screen. Seems like this is a alert for under voltage. I tried different power supplies and my best ...
0
votes
1answer
2k views

Can I power a RPI3 from a USB-C 3A power supply and a USB-C to Micro adapter?

I'm a little confused by the power standards. as far as I can tell, USB PD (power delivery) specifies a maximum of 2.1A. The RPI3 requires recommends 2.5A, 0.4 more than the spec. Canakit's power ...
0
votes
1answer
307 views

L293D, Raspberry Pi3, 12 V DC Motor - GND connection?

Is this correct connection of GND? Will I not fry the Pi? 5 V from Pi to power L293D, (9-12 V)battery to power DC. 9 V minus and Pi GND pin connected together with L293D GND.
7
votes
5answers
6k views

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 ...
2
votes
0answers
149 views

Best Way To Power Raspberry Pi Zero and External 4.5 - 36v Circuit

I am creating a drone where I have a Raspberry Pi Zero, and a Motozero. I need to supply the Motozero with power from 4.5 to 36 volts as well as the Raspberry Pi Zero. What is the best way to do ...
1
vote
5answers
2k views

Not getting enough volts - is the problem the power supply or the pi itself?

I've been having trouble getting my Raspberry Pi to work, and I found out that the power supply I was using had only been supplying 4 volts (give or take half a volt). I bought this one from Adafruit, ...
2
votes
1answer
987 views

RPi model 2 - USB ports receive no power

The USB ports on my Raspberry Pi 2 model B V1.1 do not receive any power. I measured the USB pins with a multi-meter, which should have 5V, but have none. I tried different power supplies, which work ...
1
vote
3answers
108 views

Do I have to buy a powered USB hub?

Tomorrow I will buy a RPi 2 B, which I would like to use with an external 2.5 HD (5v 1A) and a single 2A charger (connected to the microUSB port). Will I be able to run both of them by adding ...
1
vote
1answer
161 views

Rpi3 power issues: USB,LAN not working, No signal on ACT LED-

I am using Raspberry pi 3 as media center with OSMC on it, it was working fine with 5.2V 2A power supply for about 3 months. But now LAN and USB ports are not working, green LED is also not blinking ...
0
votes
0answers
293 views

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 ...