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Questions tagged [power-supply]

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

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1answer
48 views

What is the max voltage that the Raspberry Pi can handle over the USB plug? [duplicate]

I've been trying to make my own lower-cost power supply for the Raspberry Pi (my cellphone wall adapters don't provide clean enough 5V power for the Pi 3B+) with a 12V wall wart I have laying around ...
1
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1answer
26 views

Don't start Pi on power connection

I've currently got my raspberry pi setup with a power switch that wakes it up from power off (using GPIO3) and shuts it down safely using a simple python script. Pretty basic stuff. The problem ...
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1answer
31 views

3.5 inch HDD case/rack with seperate USB connection?

I want to build a NAS with RAID 1 using two 3.5 inch HDDs. I want to connect the HDDs via USB. Thus I'd need two cases for the HDDs with two seperate power supplies. Cases/Racks with two HDD slots ...
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2answers
48 views

Powerbank Qualcomm 3 fried my Pi Zero W

I tried running a Pi Zero W on a 10000 mAh powerbank with qualcomm quickcharger capability (https://www.biltema.se/kontor---teknik/mobiltillbehor/powerpacks/powerpack-10000-mah-2000041816) . The ...
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0answers
17 views

RPi 3b+ portable battery concern: enough voltage?

For starters, I am trying to use this power pank as a portable battery for my robot: https://www.costco.ca/PocketJuice-12%2C000-mAh-Portable-Charger-.product.100416339.html I connected the pi to ...
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0answers
18 views

How to power a stepper motor and vacuum pump?

For my robotics course, I am building a robot that plays tic-tac-toe. The design I have settled on is building a 3d printer-style robot, but replace the printer heading with a vacuum suction pump to ...
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0answers
25 views

Several Zero-W boards won't even light up

In the past, I had no trouble getting my first Pi Zero-W board to boot. Something seems to have happened, such that with: three different boards (two newly purchased, one old that I think was blown ...
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0answers
19 views

Possible to Power an IP camera from Pi

I have a raspberry pi 3 b+. I was thinking instead of using an USB camera or the camera module would it be possible to connect an IP camera? The raspberry pi will be powered by a battery and the pi ...
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1answer
25 views

Power Raspberry Pi using GPIO Pins and a 10A supply with 7805

I am currently working on a project where i have micro-controller,stepper drivers etc all powered through a single 12v 10a power supply. I was planning to use the same supply to power the raspberry pi ...
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0answers
33 views

Pi 3B, 2 Servos and 2 Ultrasonic sensors. Power Supply needed [on hold]

So right now I have the following items in front of me: Raspberry Pi Model 3B The power cable / plug that comes with it 2x MG995 Servo motors (<- open short compact datasheet for voltage info) 2x ...
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1answer
44 views

External 12v power supply to relay

I have a 12v 8 channel relay https://www.modmypi.com/raspberry-pi/relays-and-home-automation-1032/relay-boards-1033/8-channel-12v-relay-module which I want to connect to my RPi3 so I need an external ...
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1answer
44 views

Using a molex powered usb panel to power multiple pi's

I have been looking into multiple ways to power numerous rapsberry pi's from one power source. I am not an electrical engineer and as such some methods I have researched online are less than ideal, ...
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1answer
76 views

Can I give power 5V 2.1A to Raspberry Pi 3 B+?

I have already taken RPI 3 B + from post office and now I want start RPI 3 B +. But I'm seeing that I haven't got 5V 2.5A Power Block. So, I have a question. Can I give power 5V 2.1A to Raspberry Pi 3 ...
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2answers
40 views

Single power supply to RP3 and Adafruit Motor Hat

I have a project that includes a RP3 and an Adafruit motor hat (https://www.adafruit.com/product/2348), with 2 5v stepper motors (https://www.adafruit.com/product/858). In the guide they state the ...
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2answers
69 views

Raspberry Pi 3 B+ shuts down randomly [closed]

My RPi 3 B+ shuts down randomly. I have a official power supply and a 32 GB Toshiba microSDHC class 4 card. I'm using it as a host for a Discord bot.
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2answers
64 views

Powering Raspberry Pi and Arduino

I'm curious about powering Arduino Uno, Raspberry pi 3 b+ and motor driver L298n. I've got 11.1V / 2200 maH li-po battery. Firstly connected battery to motor driver, then feeded arduino from 5V out ...
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1answer
56 views

12V-to5V (3A) converter for car fuse box

I'm planning to setup a RetroPi (using Raspberry Pi 3) in my car with a direct connection to the fuse box with this 12V-to-5V (3A) converter module. The power requirements on the Raspberry calls for 5....
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1answer
34 views

Power from Pi 3 to 7" display

Does the 3v3 carried in the FFC cable at the display header of the Pi 3 B+ supply power to the 7" touch display? Or do I need to supply power at J1.1 and .5? If so this power can be pulled from the ...
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2answers
107 views

Powering Raspberry Pi using DC Power supply

I am trying to power my raspberry pi model 3 model b+ using this DC power supply. According to the official FAQ the power requirements seems suitable. But, I am not how to use the power supply to ...
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2answers
110 views

Is it safe to use this battery with the Raspberry Pi Zero?

I have two questions actually: 1) is it safe to use this battery and these wires with the raspberry pi zero? 2) if yes, where do i solder the highlighted (red square) ends to the zero board?
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1answer
48 views

Can i use 2.5Amp on Raspberrypi 3B GPIO 5v pins? [duplicate]

I'm thinking of using a 5V and 2.5Amp power supply to power up my Raspberrypi 3 model B over it's GPIO 5V PIN. Is it safe to use 5V 2A IN GPIO PIN?
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1answer
144 views

How to power Raspberry Pi from a lab power supply via USB?

How can a Raspberry Pi be powered from a lab power supply via USB? I have a lab power supply that can easily output 5 V/4 A and I would like to use it to power a Raspberry Pi (version 3B and 3B+). ...
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1answer
46 views

Prevent Pi Zero W from turning on after receiving power

My Pi Zero is powered by a small ATX PC power supply that is also powering a few other components: projector, audio amplifier. I'm using the gpio-shutdown device tree overlay to add a power button on ...
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1answer
138 views

accidently reversed polarity power to Raspberry Pi 3B+

I was trying to make a custom power source to supply power to the micro usb port on the Pi B+ and I reversed the + and - by accident and then smelled something like burned plastic. The SD card doesn'...
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1answer
175 views

Pi shuts down every day at 11:23 PM

I have a Pi Zero W running Raspbian Stretch Lite (June 2018). I'm using it to turn the crank on an automatic cat feeder. I've barely changed the base configuration: apt-get-installed git and samba, ...
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2answers
144 views

Overcurrent protection

Are there any over-current protection measures on RPis? Either on GPIO or power supply pins. Are there differences between versions? Unfortunately two of my 3b+ boards are dead now because of brief ...
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2answers
276 views

Powering Motor with Raspberry pi and h-bridge

I am trying to control a 3-6 volt motor with a raspberry pi and h-bridge. I have a separate power source for my pi and my motors. I have tried a 6v, 9v, and 12v power source. However, the motor ...
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1answer
82 views

Is it okay to power the Pi Touchscreen by plugging into the Pi?

I have the official raspberry Pi 7 inch touch screen, and I have mounted to it a Pi 2. Lately I have been using it and I have been plugging the power into the Pi itself. I however recently remember ...
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0answers
34 views

Portable Raspberry for Recalbox

Today is the day where the beta of Recalbox for 3b+ is out. For the moment, it's working. I want to know how to make my RBerry portable, so that I can play with it everywhere. I'm new to all that ...
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2answers
324 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 ...
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1answer
160 views

Monitor Displaying “No Signal” with RetroPie at Powerup

I'm in the process of building a game console using RetroPie and a Raspberry Pi 3. I'm connecting the Pi to a monitor via HDMI, and I'm powering both using a power strip with an on/off switch, to ...
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1answer
24 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 ...
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1answer
39 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?
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2answers
1k views

safeness of using 18650 + battery casing for raspberry pi

I am planning to use a 18650 battery and a casing like below to run a raspberry pi zero W outside on my watch, but I hear bad stories about lithium ion batteries, like 18650, exploding on a regular ...
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1answer
56 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 ...
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2answers
107 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?
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2answers
135 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 (...
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1answer
214 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 ...
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1answer
646 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 ...
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3answers
837 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....
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2answers
413 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 ?
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1answer
69 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
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1answer
76 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 ...
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1answer
796 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. ...
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0answers
18 views

Turn on WittyPi via ligth

I want to use my Pi outdoors for measurement. I measure the temperature and some other things periodically via the wittyPi. But I also want to make the wittyPi turn on when light hits a solar panel ...
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2answers
64 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 ...
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1answer
359 views

Raspberry Pi Low Power Warning

RPi Model B+ Raspbian 7.11 Kernel 4.14.41-v7+ I've been getting low power errors during startup (lightning bolt), and continue to see them in my syslog. I have tried multiple different USB cables, ...
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0answers
14 views

Bootup problem, freezing Pi, power problem with IR camera or USB

When I bootup my py with latest version of raspbian with only one IR camera my Pi wont bootup. The red led blinks red. This same PI, Img, and SDCard were working weeks with same camera + nova PM ...
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4answers
97 views

Power Requirement for Pi 3

I have a Raspberry Pi 3 Model B, and I wish to make a tablet with it. I am using the WaveShare 7inch touchscreen, the pi camera V1, a USB hub and an external CD/DVD drive. But when I got everything ...
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0answers
76 views

Raspberry Pi external power supply for sensors

I am working on a project that involves a Raspberry Pi 3B+ and multiple sensors (temp/humid DHT22, pH probe and EC probe from atlas scientific, cameras....). I am trying to figure out how to power my ...