Questions tagged [usb-power]

Relates to powering USB devices from the Raspberry Pi

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I would like to add a battery to my Raspberry Pi 4. Can i do this by soldering to tp7, tp12, or tp1 on the underside of the board?

I would like to add a battery to my Raspberry Pi 4. I am building a tablet that can be turned on and off by a switch that brings power from the usb port from a power bank to power the pi, can i tie ...
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1answer
48 views

Signal generator connected to raspberry pi via USB

Ido connect to the device from my raspberry pi and able to send commands. The power consumption of the SG is 2.5 W. That means that the current of usb port should be 2.5 / 5 = 500 mA. >>> ...
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45 views

can I use two 4 TB disk powered by USB on RPI-4? No external power supply

I use 1 usb powered 4 TB disk sda without issues on RPI-4. Now I added a second usb powered 4 TB disk sdb and receive lots of errors (from both devices): # lsblk NAME MAJ:MIN RM SIZE RO TYPE ...
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1answer
36 views

Raspberry 3+ b and two external usb drives: lack of current

I've encountered the following problem: when I connect 1 external usb hdd to my Pi, everything works fine. But when I connect second one with the same characteristics, both drives are not usable. I ...
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2answers
95 views

How to power a Raspberry Pi 3 for USB HDD for storage

I'm trying to use an external HDD for storage on my Raspberry Pi 3B+. The disk is a 0.55A 320GB Western Digital Blue always plugged in, and added to /etc/fstab with defaults,user options. I've checked ...
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45 views

Powering the Raspberry 3 B+ with PSU

I have a PSU from Amazon that provides 5V and I used my trusty multimeter to adjust the voltage to exactly 5.0V. I used it previously to run some silent fans, but I don't have any use for that anymore ...
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30 views

UPS for Pi 3B and hdd

I'm quite new to the Pi world, but I need a UPS unit to power both a Raspberry Pi 3B and a 2.5'' hard disk used by the Pi. I thought a power bank could be the right choice for me, but I cannot find a ...
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1answer
67 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 ...
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3answers
163 views

Rpi3B+ micro USB connector got 15V power. Is it dead? Can I save it?

I accidentally gave 15V to a Raspberry Pi 3 B+ Micro USB slot, when I observed some smoke I instantly removed in from the power supply. What can I do to restore my Raspberry Pi?
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1answer
540 views

Can the Pi 4 power 2 external USB 3 HDDs?

I would like to connect two external 2.5 HDDs a Pi 4. Can the Pi 4 power two of them at once? This is the model I have in mind: WD 2TB Elements
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USB Power Draw Plug In Order

I'm having some issues running a USB webcam and a USB speaker at the same time. If I plug in my webcam second, both devices work perfectly fine. If I simply boot with both plugged in, the speaker ...
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1answer
39 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 ...
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1answer
47 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 ...
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1answer
88 views

Will this work out (usb hub + rpi zero w + Zishan Z1 DSD)?

Well, I want to connect Rpi zero W and Zishan Z1/2 DSD in one case, but with both devices working in one port connected to PC. (with working usb device in Rpi if in "portable" mode or in both ...
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1answer
80 views

Powered USB3 Hub vs USB3 Y Power Cable

I have an issue that means I have to use a powered USB hub for the HDD that is attached to my RPI4 (long story). The hub just broke. My budget doesn't allow for a decent powered USB3 hub BUT does ...
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69 views

Is it possible to connect a Raspberry Pi 0 to the USB port of a router, to connect to the internet?

Recently I read (in articles such as this one) that it is possible to use the Raspberry Pi Zero in 'USB/Ethernet gadget mode'. Now my modem has two USB ports, which the manual says can be used for ...
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2answers
356 views

RPI4 won't boot with powered USB hub

I have an RPI4 running a Plex server, Pihole, etc etc. Power kept dropping while running certain tasks involving the attached HDD, so I started using a powered USB3 hub - problem solved. But now the ...
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2answers
1k views

Can the 3b+ power two usb SSD drives?

Can I power two usb drives using USB to satas or do i need a powered USB hub?
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3answers
6k views

USB Powerbank for Raspberry Pi 4

Is it yet feasible to use a USB powerbank to power the Raspberry Pi 4B? Are there any that you've successfully tried and could recommend? Can a 2.4A USB-C bank work?
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6answers
12k 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 ...
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1answer
47 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'...
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3answers
242 views

can i power 2 raspberry pi 3 B+ using a USB hub?

i like to power 2 Rsp3b+ via a Power USB hub, i have a usb power hub that is 12v @ 2A and im worrying it will blow or burn the ic's of the pi's due to over voltage, would this be true? I like to add ...
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21 views

Can I issue a command when a specific message issued in the syslog

I am having power problems with my USB devices which is proving difficult to resolve. However I can see on the syslog that there is a specific error message which shows there is a problem. What I ...
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80 views

Motion WebCam USB Errors - Unable to open Video Device

I have a Raspberry Pi Model B Plus Rev 1.2 with a Microsoft Corp. LifeCam HD-3000 connecting running Motion for a Webcam. I am getting periodic errors on the Webcam and it stops working. I am using a ...
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0answers
80 views

Trouble connecting USB devices with Raspberry Pi Compute Module on custom PCB

I am working with a team designing a PCB that works with the Raspberry Pi Compute Module 3 card. We are having a bit of trouble with the USB ports. The schematic of the USB portion is somewhat similar ...
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1answer
113 views

Raspberry Pi Shows Low Power Lightning Bolt When Only Using 1 of 3 Amps

My Raspberry Pi 3B+ is running Kali Linux on the official 7" display. I am using an Anker power bank that says: "5V=6A (3A max per port)" in the description. When using the Pi, it constantly shows the ...
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1answer
114 views

Do I need powered USB hub for WD External Drive?

I just got a WD MyPassport external drive, that is solely powered via USB (there are no other plugs). I have seen in various places that a powered USB port is suggested for the RPi, but I can't quite ...
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2answers
76 views

Powering Rpi won't boot using custom microusb and supply

I'm attempting to power my Raspberry Pi with my own power supply. As you can see from the picture, that is the micro usb I have modified to connect to my power supply. However, when I connect it to my ...
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160 views

Connecting Raspberry Pi to old found TFT display

I have an old car DVD player sitting around that has a fairly decent secondary TFT LCD screen (hannstar 721h440b19-a1) that I thought I could use with my Raspberry Pi 3 Model B. I opened up the unit,...
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2answers
2k views

Is it safe to power my external hard drive with a Raspberry Pi 3 B+ USB port?

I have a external hard drive that has written on it "5V ⎓ 1A". Both power and data transfer happen over a single USB. I have been reading about powering this hard drive with the USB ports on my ...
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2answers
2k views

Car Powered Raspberry Pi: Safe Shutdown and Power On

Apologies if this is a duplicate, but I can't seem to find a suitable solution. I need to power a Raspberry Pi in a car, and for obvious reasons need to shutdown gracefully, however, I need it to ...
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1answer
310 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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2answers
162 views

Choosing a USB hub

I've read that using self-powered USB hubs with Raspberry Pi tends to be problematic. My first discovery today is that I will prevent some problem buying a USB-2 hub. My second concern is to power on ...
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1answer
69 views

PL2303 USB: Why connect the red wire +5V?

An instruction video at T=2:12shows the red +5V source connected to the rPi. In what scenario would one want to do this? I ask because I would expect the rPi to have it own power supply (in ...
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2answers
517 views

Raspberry Pi SD in RAID1 with a USB-Stick

I am using my raspi for my smart home monitoring and I don't want any system crashes because the SD card fails. So is there a way to build a raid 1 with the SD card + an additional USB stick (or maybe ...
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2answers
2k views

Raspberry Pi 3 Model B (not B+) USB polyfuse location

Usual problem - USB power has gone. Where is the fuse located on the board? The reduced schematics on the RPi webpage does not show the USB at all.
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1answer
97 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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2answers
178 views

Power rpi with 2 ports from usb hub

Ok so I have not been able to find this specific question on the interwebs. I am looking for a USB hub that will power the pi and a few other things. I'm not concerned about the over all power rating ...
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0answers
21 views

USB Dongles worked on first boot okay but after restart it stopped working

I have a Raspberry Pi 3 Model B flashed with Raspbian by Etcher.io. When I booted it for the first time , I was playing some YouTube videos and it worked fine with keyboard and mouse. However, after ...
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1answer
5k views

USB Boot From SSD not booting — Rapsberry Pi 3b+

So I'm having issues getting the USB boot mode working on my new raspberry pi 3b+ and a couple of different SSD's I'll first go through all the things that I've done, and what I'm seeing. Installed ...
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60 views

Power AND Data on a SINGLE port with Adafruit PowerBoost 1000

I would like to be able to power my Raspberry Pi with the Adafruit PowerBoost Charger1000 and use USB data while exposing only a single USB port on my device. One idea I had was to simply split a USB ...
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1answer
131 views

Missing L4 chip near HDMI port, not boot up and usb port no power output

My rpi work perfectly until I touch it, It not boot up then I found the L4 chip HDMI port is missing(I have touched HDMI port I think my fingernail pull it off...). I found that tiny chip in the box ...
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4answers
767 views

Dual power supply for Raspberry Pi 3

I am using a Raspberry Pi 3 B+. Now I want to power up my Pi through GPIO pin 2 or 4 using a LM2576, and it should also work with USB power supply from adapter. I want to know which supply is ...
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6k views

How Can My Raspberry Pi 3 B+ Power All My Devices?

I've a bunch of questions, I have searched LOTS but I can't seem to figure this out. I hope an expert can answer this for me. I read that a Raspberry Pi can only output 0.6A for those 4 USB ports in ...
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0answers
58 views

Raspberry Pi HDMI blacking out and keyboard,mouse freezing

My setup consist a Raspberry Pi 3 model B running raspbian jessie. It is powered through GPIO header by a 5V, 5A switching regulator. I had a HDMI monitor, a flash drive and a USB hub connected with a ...
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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, ...
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4answers
142 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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1answer
207 views

usb to eth adapter hot-plug on pi zero w causes reset

RPi zero w v1.3 running RASPBIAN LITE stretch I would like to use an ETH adapter to connect to the pi, but if I plug it before starting the system all works fine, while in case of hot-plug it causes ...
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1answer
960 views

Powering Raspberry Pi Zero when USB OTG is in device mode

I'm using a Raspberry Pi Zero as a USB device, i.e. it is connected and powered via the OTG USB port to a USB host (in this case another Raspberry Pi, but it could be a PC or any other USB host): ...
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1answer
6k views

How big of a power supply do I need to power a 3B+?

This chart shows the Pi 3B+ drawing upwards of 5.6 W under load. I know they recommend a 2.5a power supply, but is that an exactly accurate number? Would 2.4a be enough? How powerful of a power supply ...