Questions tagged [usb-power]

Relates to powering USB devices from the Raspberry Pi

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Spec for the power requirement of a Raspberry Pi-3

I am using a Pi-3 with a relay board to control my gate. The gate doesnt have the facility for automation, so I have the relays, effectively pressing the buttons on a remote. The Pi, relay board and ...
Rohit Gupta's user avatar
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Raspberry pi Zero W reboot after USB is disconnected/connected

I am using raspberry pi 3b+ and Zero W and a Waveshare 7 inch capacitive touch display. I am trying to turn off the back light of the display in various following ways in both the Pis. So if the turn ...
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GNSS module do not working with raspberry pi, but working on pc

I have an error with my GNSS module. I use it with an usb-uart driver, and when I connect it to my computer, and read datas with u-center or in a python script I get continously updated position ...
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UPS for Raspberry Pi, but as a single PCB

I'm building something which requires a system that would act as a UPS for a Raspberry Pi. In the system, the power might get abruptly for 2-3 seconds. I don't want the Pi to shut down or reboot then. ...
Vishal DS's user avatar
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How to safely power PI Zero 2W from external supply via +5V and allow USB connectors to be used

There are other posts indicating that bad things can occur if you are providing 5V from the external connector and plug in a USB cable with its own 5V supply. Various solutions have involved cutting ...
Chris Morgan's user avatar
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How to tell if my raspberry PI is working (Home assistant USB booting)?

I am trying to run HA on a Raspberry PI 3B via USB but I am having a lot of issues. My Setup: Raspberry PI 3B SATA to USB adapter with external power 500GB SATA SSD 5V 3A Power supply (up to 20V in ...
Andrea Zaffanella's user avatar
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How does the new RPi 5 function with a USB power supply?

Each new model of RPi "pushes the envelope" in terms of the amount of power it draws over a USB electrical interface. The RPi 4 was spec'd to require up to 15 watts: 3 Amps at 5 Volts. Three ...
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How to test SSD with rPi 3B+ without dedicated SSD power supply?

My 3B+ boots from a Western Digital Blue SSD. The nameplate under the SSD indicates 1.6A at 5V so, I am really puzzled how it works at all off a USB port with no external power. My WD Blue is wired ...
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Pi 3B+ and USB Power to SSD

I have a Pi 3B+ which I'm using as a home media server - it has been connected to an old 2TB Seagate HDD (with its own external power supply) for a couple of years and running openmediavault software. ...
Alan's user avatar
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Does an rPi 3B+ SSD require external power?

My 3B+ boots from a Western Digital Blue SSD. The nameplate under the SSD indicates 1.6A at 5V so, I am really puzzled how it works at all off a USB port with no external power. My WD Blue is wired ...
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Raspberry 3 with touch screen and RFID scanner power supply

I have some cheap scanner I'm playing around. It's USB connected and it works. I wonder can it be safe to make separate power for scanner, bcs allready have touch screen taking power from raspberry ...
ivanknezevic's user avatar
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Use external power supply

I'm a newbie I have a circuit which requires 12v to drive some ESCs that go to brushless motors and 5V that goes to pin 39 of a raspberry pi pico, they share a neutral / negative to complete the ...
Simon B's user avatar
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Does it matter whether I use internal or external or sata or nvme drive in terms of power consumption for RP4?

I want to use an ssd to use raspberry pi with home assistant and I’ve found some information that an external ssd may require too much power and be unstable with the RP4. Is this true? Is one type ...
Juan Ramirez's user avatar
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USB-C for power output when using PoE+ HAT

When using the PoE+ HAT with the raspberry pi 4B, would it be possible to use the USB-C port as a power output, rather than a power input, for instance for an extra fan when the GPIO pins aren't ...
Rik Schaaf's user avatar
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USB dongle for remote control doesn't wake up

A bit stumped on this one, hoping any of you fine people can assist... I have a 2.4g remote control with a USB dongle that I'd like to use on a Raspberry Pi Zero 2 W running Raspbian Lite 32bit. When ...
PepsiMax's user avatar
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Is it ok to usb micro male - micro male for USB device?

I am hooking up an arduino micro to my Pi Zero W. For space, I used a short micro male-male USB cable: https://www.amazon.ca/CableCreation-Micro-Kindle-Android-Tablet/dp/B01M5GZ3N0 When I use this on ...
Organnoise's user avatar
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Can I power my PI via USB if I Disable USB?

I learnt that I can disable the USB circuitry with this command: echo '1-1' |sudo tee /sys/bus/usb/drivers/usb/unbind Does doing this disable USB power too? Or just data/connectivity? I would test ...
Tom J Nowell's user avatar
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Powering RPi 4B via USB-C Intermittent

The USB-C port on one RPi 4B is not making a good connection. If I apply side pressure to the USB-C power cord, the connection is made, and the RPi powers up, but when I release pressure it dies again....
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Disable USB until boot is complete

TLDR; I want to disable the USB hub on a RPi4 until boot is complete. Hi, I am trying to solve a problem that I have not seen posted about. I have a RPi4 with multiple RPiZs plugged into it acting as ...
Rusty's user avatar
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What damage can a Y-Cable plugged to the the USB-A 3.0 port do to the PI400? [duplicate]

I'm using a USB Y-Cable with my Pi400 to power and use an old WD 2TB MyPassport Usb3.0 HDD. I'm using a separate 5v-1a PSU so the HDD doesn't have brown-outs. So far I've been using using the cable ...
luckyluca's user avatar
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Y Cable to power Usb3 HDD on Pi400

I'd like to use an external usb3 2Tb WD MyPassport 5200rpm HDD with my Raspberry Pi400 for a large Retropie project. I think having it running powered from the Pi400 alone is not giving enough power ...
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Which micro usb port if preferable to power pi zero?

Pi zero w has pwr micro usb and normal micro usb. Both of them can be used to power the pi. What is the safest way to power pi zero w, via pwr micro usb or data micro usb?
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Can the Raspberry Pi 4B power 2.5 hard drive and SSD without a USB hub?

Does Raspberry Pi 4 model B power one 2.5" Seagate 2TB external hard drive and a M.2 SSD connected via USB? Will official power supply suffice powering both and Pi? Any help or insight is highly ...
hulk_in_the_spa's user avatar
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Can Raspberry Pi 4 benefit from 3.5A power supply?

Experiencing external SSD data corruption issues which I believe are related to power issues. Evaluating if it’s worth upgrading power supply from official Raspberry Pi 3A USB-C power supply to Argon ...
sunknudsen's user avatar
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I broke SSH access to my Raspberry Pi

I had my Raspberry Pi 3B+ running old Raspbian Jessy. I was connecting to it by ssh. I have installed uhubctl. uhubctl is a tool which can turn off power supply for USB port. I got # uhubctl Current ...
Dims's user avatar
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How to support the power supply of servo motors using an ordinary AC-to-USB adapter?

I normally power my Raspberry Pi Pico via a USB connection to my computer. However, when working with servo motors, the motors can draw quite a bit of power, destabilizing the USB communication ...
normanius's user avatar
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Troubles with External Dual USB SSD Drives for NAS Setup

I am attempting to create a Raspberry Pi 4 NAS setup. I purchased two Seagate Ironwolf 125 1TB SSD USB (pdf warning) disks. The trouble that I am having is that the RPI will not always recognize the ...
hooknc's user avatar
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How best to run a raspberry Pi 4 from a 12V DC supply

The Raspberry Pi 4B uses the USB-C input as its power supply. To the best of my knowledge a full power USB-C supply is 20V or is it any voltage up to 20V? If it's variable, is there a good way of ...
111111's user avatar
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7 votes
1 answer
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Maximum power draw on Pi Pico 3.3V rail with USB power

The Pi Pico datasheet recommends a maximum power draw on the 3V3 pin (pin 36) of 300mA. However, the RT6154B datasheet indicates that up to 3A can be drawn when Vin > 3.6V, which is the case when ...
ma3oun's user avatar
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Insufficient power for RPI + 7" Touch Screen

I have a raspberry pi 3B. It is connected to a 7" RPI Touch screen, (made by RPI). The screen gets 5v from the pi and the pi is connected to a 5v, 2.1A USB power pack. For some reason the power ...
X Builder's user avatar
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4 answers
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Raspberry pi-4 powered usb hub backfeed issues

I have a Raspberry SC15184 Pi 4 server and I'm looking to power 3 USB peripherals each with a 3-6W power requirement (which should be 0.6-1.2A given pi-4 operates at ~5V). This is above the 1.2A ...
Discombobulous's user avatar
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2 answers
140 views

Is 4A enough for a NAS?

I have recently turned by Raspiberry Pi 4B into a small NAS. However, I noticed that the Pi disconnects from Ethernet from time to time. Whenever this happens (e.g. ssh not responding or Pi not ...
Roysten R.'s user avatar
1 vote
2 answers
678 views

Using a PD USB hub for power and data for Pi 4

I want to use a 7" LCD (not the official Pi 7" LCD) together with the Pi 4. According to the LCD documentation, it requires 2A. I was planning initially to power the LCD through one Pi. Now ...
Zaffresky's user avatar
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Raspberry PI4 usb 3.0 seems not working properly [duplicate]

I am using a Raspberry PI4 with Google Coral TPU and a Telit Lte modem both attached on USB 3.0 ports. I get a lot of "Under-Voltage" messages also using the Raspberry power supply(5.1V, 3A)...
Andrea Lancioni's user avatar
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299 views

Raspberry PI4 + Coral TPU + Telit LTE get "Under-Voltage"

I am using a Raspberry PI4 powered by the Raspberry power supply(5.1V,3A) and I have also a Coral TPU and a Telit Lte Modem attached on Raspberry USB 3.0 Ports Hub. According with the Coral Power ...
Andrea Lancioni's user avatar
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Random disconnection of an USB Camera with Raspberry Pi 4

I've got a Raspberry Pi 4 with an USB2.0 camera connected through a slip ring. When I boot, there's no problem at all, but sometimes the Raspberry is unable to detect the camera while streaming (I'm ...
Adrián Álvarez's user avatar
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1 answer
558 views

How to Use RTC Module (DS1302) to specifically Execute a Program at a Certain Time

I had already completed a Setup of DS1302 on my Raspberry Pi 3B+ and fortunately its working just fine. I also already solved the Problem of Turning On and Off the USB Port using "uhubctl". ...
Little Intoxicated's user avatar
1 vote
2 answers
66 views

How much overvoltage for a few ms

i'm trying to build a system with a Raspberry Pi and 2 switchable 5V DC Batteries (USB Powerbanks). I want to switch using Arduino and Relays. I would like to switch almost instantaneous, in order to ...
Beat Richli's user avatar
2 votes
1 answer
352 views

Delay booting devices or booting the kernel

BLUF: I'd like to see if there's a solid way to delay the boot-up of the kernel to keep a Pi from sucking up a lot of juice out of the gate, or the USB bus to delay the devices' boot-up until after ...
jmcdee's user avatar
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Is there any advantage powering up a RPi 4B with a PSU rated for 8A @ 5V?

I have a Raspberry Pi 4B 4GB RAM variant that will be running 24/7 with the following attachments: an ethernet cable leading to a router for internet connectivity a 2.5" external HDD attached ...
Ossum jake's user avatar
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1 answer
927 views

Can I use USB 3.0 port to power RPI4 + external SSD?

On the Pi-4B, can I use one of the USB 3.0 ports for power, instead of the USB-C port? I will be powering the Pi-4, an SSD drive (Sabrent 512GB Rocket Nano), and a Conbee II — which btw currently ...
Douglas McDonald's user avatar
2 votes
0 answers
3k views

Is it safe to power Raspberry Pi Zero 2 W directly from computer?

A great feature of the Raspberry Pi Zero is that you can tether it to a PC, Mac or iPad Pro by connecting it directly to a USB port. It can act as a USB-Ethernet-adapter and you can ssh into the Pi. ...
gray's user avatar
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2 votes
2 answers
504 views

Phone charger for powering Pi 4?

I just bought the Raspberry Pi 4 Model B 2GB RAM and I forgot my charger at my house which I won't be able to get to in a few weeks. I was wondering if I could power the Raspberry Pi using a phone ...
Bottle's user avatar
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2 answers
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Can I use a 3A/5V phone charge for powering my pi 4?

I have a completely fine and working type C charger with a stable voltage supply. The concern that I have is that my pi 4 is going to run 24/7 performing web scraping and analysis. Surely I have a ...
midnightFirefly's user avatar
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Error opening device /dev/video0: video capture not supported

I am trying to set up USb camera with RPi4. It is working well with PC windows10 default 'camera' application but failed with RPi4. I use mjpg-streamer to access the streaming. /usr/local/bin/...
Emlinux's user avatar
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482 views

Pi Zero 2: insufficient power from USB port

i want to use my EzCap269 video grabber with my new Pi Zero 2. Unfortunately the video grabber won't work (power led is off) - so i assume it's getting not enough power (it's a USB3 device). I'm using ...
Fuxi's user avatar
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Can you damage the pi's USB controller by constantly applying and removing power to it?

I have a pair of USB powered fans. I currently have them connected to a Raspberry Pi 3b+ via one of the USB-A connectors, drawing power from the pi. I have two cron jobs set on the pi - one that ...
Matthew's user avatar
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Does the power port of the Raspberry Pi 3a+ have lines for transfering data?

Im getting a Pimoroni Power On Off Shim for my Pi 3a+ and wonder if i could use the original power micro USB-port for data stuff, like connecting a 3D printer or a webcam - since the 3a+ lacks ...
Lilian Korba's user avatar
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273 views

Cutting power to USB port on a RPi 3A+

I am running a Raspberry Pi 3A+ in my car as a DIY Android Auto head unit (using Crankshaft). In order to not have the RPi immediately shutdown when you remove the key from the ignition (or have it ...
Compizfox's user avatar
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1 vote
1 answer
645 views

Powering multiple hdds to work with raspberry pi 4

I have a rpi4 with the default 5v 3A charger. However, when I hook up all my usb peripherals (2 mechanical hdd and a cc2531) I run into power limitations and things do not work properly. I am thinking ...
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