Questions tagged [power-supply]

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

Filter by
Sorted by
Tagged with
0
votes
4answers
132 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 ...
2
votes
2answers
27 views

Can I power two Pi from a single Lithium battery?

I need to run at least 2 Pi together, one controlling hardware and another sensing its environment. I would like to keep weight down by using a single LiIon battery. I have one to connect to a PiJuice ...
1
vote
2answers
78 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 ...
27
votes
7answers
86k views

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 ...
3
votes
1answer
162 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 ...
1
vote
2answers
729 views

Camera causing Pi to reboot?

I have a Pi Zero with the version 2 pi camera. Lately, when running a program that takes pictures continuously (about once every 2 seconds), the device completely stops and reboots. The program works ...
2
votes
2answers
96 views

Convert 12V to 5V to power RaspberryPi

I have an Eleksmaker laser cutter which has a board with a 12V output (see top of image). I would like to power my RaspberryPi using this 12V output. What is the advantage of powering the ...
0
votes
1answer
35 views

USB OTG with power supply connection to Raspberry Pi Zero

I have connected my 5.2 V 2 A tablet charger to power USB port of Raspberry Pi Zero and USB port to my Linux OS Lenovo laptop, according to this post I must cut the 5 V pin of USB PC port, but I didn'...
1
vote
1answer
149 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 ...
2
votes
2answers
201 views

Raspberry Pi Zero W solar power setup

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 ...
3
votes
5answers
895 views

How to monitor if a remote Rpi freezes and reboots it, using a watchdog timer or otherwise

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 ...
1
vote
2answers
123 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 ...
-2
votes
2answers
28 views

Is L293DNE Dual H-Bridge Motor Driver Chip/Board also a 5V voltage regulator/converter to power the Raspberry Pi itself?

Have been reading many articles showing how to connect DC motors to the Raspberry Pi and of course a DC Motor Driver Chip/Board is needed to come between DC motors and the Raspberry Pi GPIO Pins to be ...
2
votes
3answers
20k 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 ...
67
votes
2answers
73k views

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?
2
votes
1answer
54 views

USB-C to USB-C Cable Recommendations for Pi 4

Based on the USB-C implementation issue in Pi 4 rev. 1, I'm looking for recommendations on a non e-marked USB-C cable to use for power. Having dug through my own cable stash, I've found a couple of ...
0
votes
1answer
62 views

Regularly power up an autonomous Raspberry Pi? (e.g. once a week)

I want to power a Raspberry PI from a power bank, which should give me - according to various sources on the Internet - 30 to 70 hours of operation. How can I power up the Raspberry Pi once a week to ...
0
votes
1answer
52 views

Reporting undervoltage, accidental reverse voltage

I've got a raspberry pi 3b+ mounted in my wall with the official 7″ touchscreen, and after some time i noticed the symbol in the top right corner notifying that it does not get the voltage it's ...
2
votes
1answer
94 views

rpi kind of turns off (not accessible by ssh / vnc, red light on), var/log with regulatory domain

I am using a rpi3 with an external usb disk and a 3A power source, but the system seems to turn off after 1-2 days of normal use. I know that because I cannot access it (ssh or vnc), but there is a ...
0
votes
1answer
110 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 ...
11
votes
7answers
4k views

Powering Raspberry Pi 3 from another Raspberry Pi 3

Is it possible to power a Raspberry Pi 3 directly from another Raspberry Pi 3 that is powered from a Micro USB socket. I understand there is a 5v rail and I am thinking that linking the 5v rails ...
0
votes
1answer
119 views

Power Raspberry Pi and charge Adafruit FONA from same source

I have 12v leisure batteries hooked up to solar panels, I want to be able to power my pi (5V 0.7A max) and charge the Lipo battery for the Adafruit FONA (5V 2A max) for a combined 2.7A max (i think) ...
0
votes
1answer
126 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 ...
0
votes
1answer
215 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 ...
1
vote
1answer
106 views

Compute Module 3+ Power supply

I am designing power supply for CM3+ board and got few questions. I decided to use 2 LDO's (3V3 and 1V8 outputs both from 5V usb VBUS). Wanted to ask if its good solution or maybe connect 1V8 to 3V3 ...
2
votes
1answer
149 views

Despite having powered USB Hub, Raspberry Pi 2+ doesn't detect Seagate 1TB HDD anymore

I'm trying to set up a raspberry pi 2+ as an always on torrent box. I had it set up one time and it was working, but then when I turned it off and on again it froze on start up. After flashing the ...
0
votes
1answer
176 views

How many amps does a pi with 11 sensors need?

I have received so much support from this community by reading already answered questions. But now I got one that hasn't been asked yet. I have nearly a dozen sensors connected to my pi 3 so it's only ...
8
votes
5answers
4k views

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 ...
0
votes
1answer
105 views

Power Pack for RPi 3

Is there a popular ups power shield that can be used to with RPi 3? Ideally I would like to write some code in Python to monitor the battery status of the power pack and also still have access to the ...
3
votes
1answer
41 views

How to power on multiple LED through 3.3V rail ? (Power supply problem)

I'm trying to use the 3.3V rail to power up 10 LED (20mA/LED). I read that the raspberryPi could supply until 1A through this 3.3V rail, that's a lot more than needed when all the LEDs are powered on....
1
vote
1answer
306 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 ...
1
vote
0answers
27 views

Reboot issues when plugging other devices into power

Model: Raspberry Pi 3b+ Raspberry pi 4.19.66-v7+ Raspbian Buster July 2019 edition Offical PSU. I have an Arduino uno powering off one of the USB ports on the PI. Nothing else attached. I have my ...
0
votes
2answers
428 views

How Much Current for GPIO Power Supply?

I'm working on an audio project where the Raspberry Pi will be powered off the GPIO. I was trying this using an LM7805 voltage regulator to get 5v from the 9v power supply that is standard in a lot of ...
0
votes
1answer
217 views

Low power alert logo

While simple tasks like browsing web, a lightning bolt appears in the top right part of the screen. I'm using a 2A charger. Is this really dangerous, for the pi or the SD card or the peripherals ...
1
vote
1answer
92 views

Can a Raspberry Pi 4 be used as USB gadget but draw power from elsewhere?

Assuming that the Raspberry Pi 4 is attached as a slave to emulate different devices/gadgets using the USB OTG functionality available on the USB-C port: Is it possible to power the Raspberry from ...
1
vote
1answer
156 views

How to choose a power source for Raspberry Pi 4?

I bought a R-Pi some days ago. We all know raspberry pi needs 5V 3Amp to operate. I have these options for the power source: I have an SMPS (Detached from a Desktop PC) which have 5 V and 15 Amp ...
2
votes
1answer
135 views

part incompatibilities

I am trying to control a 4.5V motor with a pi. I am going to use this to control the motor: https://www.ebay.com/itm/2X-L298N-Dual-H-Bridge-DC-Stepper-Motor-Driver-Controller-Board-Arduino/...
246
votes
15answers
552k views

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?
2
votes
1answer
147 views

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 ...
2
votes
1answer
32 views

powering raspberry pi zeroW via computer usb port

I ran out of wall plugs for the Pi and I would like to power a zeroW via a USB port from my laptop. There are 2 microusb ports on the zeroW should which 1 should I use, the one near the edge or the ...
1
vote
1answer
44 views

Whether using a 3.4 Ampere adapter or Qualcomm QC 3.0 adapter to power a Raspberry Pi 3B+ can cause damage? [duplicate]

So here it goes,after looking out hundreds of pages regarding powering of Raspberry Pi 3B+ still some hesitations here. I have totally read this out very detailed & nicely written answer by ...
1
vote
1answer
563 views

Powering 12v and a Pi from the same battery

I'm building a game that contains: rpi (5v) 2x 9g micro servos (5-6v) 5m RGB led strip (12v) Right now I use 3 different sources: 4xAA battery packs (6v) for the servos 8xAA battery pack (12v) for ...
1
vote
1answer
1k 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, ...
13
votes
8answers
7k views

What is the highest voltage from the power supply a Raspberry Pi 3 B can handle without getting damaged?

I am using Android things on Raspberry Pi 3 B with a 7-inch touch screen. Currently, I always see a yellow thunder bolt sign on the screen which means that the Raspberry Pi isn't receiving a high ...
0
votes
2answers
54 views

About Power supply for Pi 4b [duplicate]

I have bought Pi 4b but now I don't wanna buy separate power adapter for it, I already have 5V,4A power adapter of my smartphone so can I use it for Pi 4b also??
0
votes
0answers
25 views

RPi 3B power supply and external USB Hub issue

I am building a project with a custom USB hub attached to one of the RPi USB ports. On the custom hub I attach 7 USB devices powered by their own batteries. The custom USB Hub is equipped with an ...
1
vote
2answers
43 views

The best way to connect the 7” touchscreen

I have a pi 3 model B+ and the official raspberry Pi PSU, and the official 7” touch screen. I’m running Raspbian with all the latest updates. I have connected the display using a USB cable as ...
1
vote
2answers
32 views

do RPi3 3.3/5V pins output constant voltage even if the RPi power supply is changing voltage?

I want to power my RPi with a lithium ion battery. The RPi will be powering some devices which require constant voltage to power them. If I use a battery as supply for the RPi (which changes as it ...
1
vote
2answers
291 views

powering the RPi 4 + a 2.5" HDD with 1 power adapter

Ok, so here's the problem: I want to build a RPi 4 machine for gaming. From what I've read, if I want to attach a 2.5" HDD via usb 3.0 to the Pi 4, it will have to be powered somehow, since the Pi won'...
0
votes
1answer
829 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 ...