Questions tagged [usb-power]

Relates to powering USB devices from the Raspberry Pi

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2answers
41 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 ...
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7 views

Sim7600 usb issues during GPS bursts

I have a RASPI2B+ connected to a LTE module SIM7600. In addition a wifi adapter RTL8188 is used as AP. I can connect easily with LTE network (AT+CNMP=38) but, when select GSM (AT+CNMP=13) it goes ...
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1answer
31 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 ...
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3answers
52 views

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 ...
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1answer
64 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 ...
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0answers
155 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. ...
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2answers
54 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 ...
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2answers
45 views

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 ...
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0answers
186 views

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/...
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1answer
77 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 ...
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0answers
34 views

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 ...
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1answer
52 views

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 ...
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0answers
47 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 ...
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1answer
85 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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2answers
994 views

Connect USB hub to RPi 4 USB C port to power the Pi and access peripherals?

I want to connect an RPi 4 to a bunch of USB peripherals and a power source that are about 3m away from the Pi, using only one USB cable (because that seems a lot neater than multiple cables and ...
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0answers
14 views

Programatically disconnect & reconnect a USB port or ethernet port [duplicate]

I have a device that is attached to the USB port on my RPi4 that sometimes has to be reset. The RPi4 is too far for us to physically disconnect/reconnect the USB cable so right now we are just ...
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3answers
55 views

How can I power a 4B from a DC power supply

I'm making a NAS with a Pi 4B, powered by a Meanwell RS-25 (5v 5a) psu. However, as far as I know, the Pi can only be powered via USB C, but the problem is all my breakout boards are limited to 500ma....
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0answers
174 views

Pi 4 doesn't recognise SSD

I bought new Pi 4 8GB from authorised seller including power cable. It recognises HDD and works fine. But it doesn't recognise SSD (crucial mx500 1tb sata 2.5-inch 7mm internal ssd). This SSD works ...
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0answers
30 views

Connecting hub to 1 USB port vs 2 USB ports?

The Pi 4B has 2x USB 3.0 ports. I have 2 choices to connect my hard drives: Using a single 10-port hub which connects to 1 USB 3.0 port. Using two 5-port hubs which connect to two USB 3.0 ports. ...
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0answers
25 views

Is it safe to change the power settings to allow raspberry 400 to power using usb?

I recently got a raspberry pi 400 and wanted to use it as a portable device but realised that it can only get full power when plugged into a power socket. I saw a video showing that you can use it ...
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1answer
476 views

Are schematics available for the newer RPi 4 with fixed USB-C power circuit?

Early editions of RPi 4 had hardware design issues in the USB-C port. (Ref: 1) Since then an updated board has been issued. However the official schematics still show the old USB-C Power In circuit (i....
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1answer
436 views

How to recover Raspbian/Raspberry Pi OS boot media after power failure

There are many questions similar to mine and none with a coherent applicable answer. Setup Raspberry Pi OS Buster; up to date. Raspberry Pi 4B. Red LED has a steady glow: current is stable. Both ADATA ...
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1answer
73 views

Raspberry pi voltage between PP3 - PP27 is 0.01V is this normal?

I measured voltage using a multimeter between PP3-PP27 and it was fluctuating between 0.01V to 0.06V is this normal? The entire problem can be found here: USB ports recieving power but not working on ...
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2answers
273 views

over-current condition on usb port when connecting arduino nano

Hi I am trying to power an arduino nano via usb port. I am using a 5V 3A power supply. I have 2 different usb cables. One lights up the arduino, but it is not recognized in /dev/ttyACM0 The other one ...
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0answers
303 views

USB ports recieving power but not working on Raspberry Pi 3B

I use external harddisk(connected via USB with its own power supply) to boot into dietpi on my raspberry pi. It works okay for a day(even with multiple reboots and poweroff). But the next day RPi ...
0
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1answer
150 views

Can USB ports blow polyfuse on Raspberry Pi 3B?

I suspect my RPi 3b polyfuse to be blown, but I don't know what's causing it. I'm using an external HDD for booting into DietPi with its own power supply and after every day or so all the USB ports ...
2
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2answers
87 views

Does Raspberry Pi 3B have polyfuse? Can USB ports blow polyfuse? [duplicate]

Does Raspberry Pi 3b have polyfuse? If it does, under what conditions can it be 'blown'? I suspect my RPi 3b polyfuse to be blown, but I don't know what's causing it. I'm using an external HDD for ...
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0answers
167 views

No power to usb ports on raspberry pi 3B

I use external harddisk(connected via USB with its own power supply) to boot into dietpi on my raspberry pi. It works okay for a day(even with multiple reboots and poweroff). But the next day RPi ...
0
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1answer
63 views

Powering raspberry pi using VGA port of a display monitor

Does anyone have an idea if you could use the VGA port of a standard display monitor to power the raspberry pi? Obviously you would need a 'VGA to USB' adapter but then would it be possible
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3answers
55 views

Performance of the Rasperris

The Raspberry pi 4 has a power supply that can deliver a maximum of 15.5 watts. How much power exactly does the Raspberry use without overclocking at maximum power so that I can connect the ...
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2answers
50 views

How voltage tolerant is the RPi 3 A+ micro-B USB power connection? [duplicate]

I've been reading about power supply requirements for RPi and want to learn more about the practical limits in addition to the design limits. What is the power protection circuit (if any) on the micro-...
0
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1answer
71 views

Use Pi to control power to usb-connected device

I have a digital microscope connected to my pi (usb) that you can use in a browser with a java web app that I have written. The microscope is also powered through the usb. There is no on or off switch,...
1
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1answer
418 views

Powering Raspberry Pi 4 'on the move' using power bank [closed]

There are good official resources that state that recommended power supply must be 3 amps (e.g. official RPi power supply via mains). However, for use 'on the move' or remote locations this may not be ...
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2answers
2k views

Max networking performance with RPi 4 (Gigabit ethernet), with/without a USB3 external disk connected

I want to use my RPi4 as a small home NAS. To do that, I'm trying to benchmark the maximum file transfer performance. Workflow: Rpi4 connected to home router with a 1 Gbit cable computer connected ...
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0answers
111 views

Raspberry Pi3B USB ports not working

I have a Raspberry Pi 3B v1.2 2015 which always worked really fine. But today I want to use it to read a serial comm from a BMS but the USB ports don't work. There are 5 volts reaching the port, to ...
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3answers
563 views

Can the Raspberry Pi work with Ethernet using a USB-Ethernet power adapter?

I have a Google Chromecast Ultra power adapter which includes Ethernet. My thinking, this is a USB to Ethernet adapter that also provides 5V power. Does this work with the Raspberry Pi Zero W to give ...
0
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1answer
89 views

My Raspberry Pi 4 consumes only 0.3 A [closed]

I have a Raspberry Pi 4 that's is powered on the USB port by a circuit I made. The key component is a Buck Regulator (LM2576-5.0WT), the input is a AC adapter (12 V - 8 A). The regulator is able to ...
0
votes
1answer
291 views

Pi 4: Keep USB powered when rebooting

I'm using a ClusterHat v2.3 on a Raspberry Pi 4. On rebooting, the USB Ports losing power, so the cluster nodes as well. Is there a way to configure the Pi 4 to keep the USB power on when rebooting / ...
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0answers
48 views

Can I use a TP4056 Micro USB 5V 1A instead of a powerboost 1000c to a Raspberry Pi Zero?

I am using a Raspberry Pi Zero and to make it rechargeable I need a Powerboost 1000c (from https://www.adafruit.com/product/2465) would I be able to supplement this for a TP4056 Micro USB 5V 1A? This ...
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1answer
70 views

Short circuit with male-2-male usb cable

My RPi 2B constantly sensed voltage drops on my 2 A charger. Since I know that I can additionally use one of those old USB Y-cables from external disk drives to support the power rail on my RPi 3B (...
3
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1answer
314 views

Pi 4 - How to be sure to order a model with usb fixed?

I discovered that some initial lots of the Raspberry Pi 4 may have a sort of hw/sw bug that may be related to USB 3, and maybe also to thermal management and throttling. I would like to understand ...
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1answer
31 views

Raspberry Pi B don't start [closed]

I try to boot from Rasbperry PI 1B version 2011.12, but it only shows the Red light but nothing happen. I try difference OS with no luck. The problem is the power?
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4answers
90 views

power troubleshooting

I am trying to power a raspberry pi 3 over a long distance (5 meters). I can power the raspberry pi with the standard power supply from Raspberry Pi itself, but when I use these: https://www.digikey....
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2answers
480 views

How to remove under voltage issue with Raspberry Pi 4

I have a project where I am using raspberry pi 4 and 5inch touchscreen. This screen is from waveshare but I have not enabled touch in it. I am using a USB splitter cable which on one end has usb male ...
1
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2answers
61 views

Do I need to use a UPS with my RPI?

Whilst I am OK with software, hardware especially electronics is not my field. I have an RPi. It is enclosed in an water-proof case apart from an aperture that lets out a usb-c cable. Inside this ...
0
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1answer
116 views

Mirabox Capture Card and External Power Source

I'm looking to power my Raspberry Pi 4B from a 12V tractor battery. I have a buck converter which can be found here. I am considering using this device to step-down the battery voltage and hook up the ...
3
votes
2answers
1k views

Raspberry Pi random reboots (Raspi 3B+)

I have a raspberry pi 3B+ model that I bought back in February 2019. For sometime, I "remember" it was working fine (although I can say from experience - memories can be deceiving). Then I ...
0
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1answer
69 views

external power supply [closed]

Using Rpi4. Using camera and IR lighting. Would like it to be powered by rechargeable batteries. What are my options.. I have found 'holding cases' for AA batteries but only for Raspberry 3s. I have ...
2
votes
2answers
355 views

Raspberry doesn't recognize me disconnecting a USB device

I have a Raspberry Pi with an Amazonbasics 10-port USB hub which has a PPPS (port per port switching) function, basically, it can turn off power to any power via a tool called uhubctl. When I use ...
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3answers
4k views

Power Raspberry Pi 4 with a phone charger [duplicate]

I've got a phone charger that delivers 4.5 A at 5 V (Huawei SuperCharge), which should be enough to power the the Pi 4. Can I use this charger or do I have to buy the original one? Thanks in advance

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