Questions tagged [usb-power]

Relates to powering USB devices from the Raspberry Pi

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1answer
2k 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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2answers
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 ...
0
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1answer
334 views

Problem installing Bluetooth Dongle on Raspberry Pi 3 running Windows 10 IOT Core

I recently bought the plugable Bluetooth USB adapter usb-bt4le and I want to use it with my RPi3. I have windows 10 core IoT installed on the RPi. I have disabled the on-board bluetooth and I wish to ...
1
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1answer
2k views

No effect when I set 'max_usb_current' in /boot/config.txt on a Raspberry Pi 3

I want recharge my iPhone from my Pi 3 Model B's USB port. In /boot/config.txt, I have set max_usb_current=1 This does not seem to have an effect any more. Why is this?
4
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3answers
805 views

How to halt Pi without turning off USB?

How do you safely shutdown or halt the Pi without turning off USB power? I have an application where an Arduino is connected to a Pi via USB. The Arduino manages a battery that powers both it and the ...
1
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1answer
59 views

Raspberry Turning on without really powering up. How?

My raspberry pi was trying to turn itself on without really powering up by USB cable. Although I am giving 12 volts to L298N shield from battery. I am making wireless RC car. When I give 5 volts from ...
-1
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1answer
136 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 ...
1
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1answer
179 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 ...
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3answers
758 views

Raspberry Pi Zero - split power

Given that the RPi Zero consumes about 1A, and I have a power adapter that gives 2.4A of DC output - I'd like to use the spare ~1.4A to power up some stuff on the throughhole board. Will that be ...
0
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1answer
85 views

Can I get both power and data from an external drive with an integrated USB hub?

I want to connect a power-hungry external drive to my Raspberry Pi 3. Normally this would mean separate external power supplies for the Pi and the external drive, or else plugging both the drive and ...
0
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1answer
54 views

Boot only with usb cable energy

My raspberry worked fine with a 5V-2A charger. From few days, It boots only with the energy coming from the USB cable from my computer. If I use the usual charger, it goes in a boot loop, displaying ...
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2answers
905 views

Is it possible to prevent the Pi from receiving power from a powered USB hub?

I have a Raspberry Pi 3 with an On/Off Shim from Pimoroni. If you're not familiar: it's basically a little device that gets soldered onto the first 12 GPIO pins and allows you to use a built-in (or ...
0
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1answer
786 views

Will my pi run on a 5v 1A/2.1A MAX power bank?

I have a SoundLogic solar-powered power bank which has a 5v @ 1A/2.1A MAX output, is it safe to use it with my pi 3? Im kinda worried about using it and it frying or breaking when the battery energy ...
5
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1answer
8k views

Powering Raspberry PI With Broken Micro USB Connector

The Micro-USB port has been brutally ripped off from the PCB on my Raspberry Pi along with traces connecting it. I know that I can power the device from GPIO 5V and GND, but there will be no ...
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3answers
2k views

Will a power bank short circuit a raspberry pi?

I was wondering if I could make my raspberry pi portable with a power bank however, I think it might short circuit the motherboard and then that would mean bye bye raspberry pi. Is it save to use my ...
3
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2answers
1k views

Two power supplies for RasPi and SSD. Does it work?

I'm planning to connect some old SSD what I've already to my RasPi3B. I ordered cheap SATA-USB adapter cable from ebay. It has two USB-a plugs, one is for data and power another is only for power. ...
1
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1answer
841 views

Arduino powered by rpi3

I hooked my Arduino UNO to one of the USB port of my rpi3. The Arduino itself power a small light sensor, later on i plan on adding LCD display, LEDs, etc Can the pi handle it without any fuss ? My ...
1
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3answers
2k views

External HD not spinning up even with max_usb_current=1

I have a Raspberry Pi 3 to which I need to plug an external HD. Such HD is a WD My Passport, which is powered directly from USB and it works perfectly with my laptop. At the first connection attempt, ...
0
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0answers
130 views

Accidentally fed 12V to the 5V-pin of Rpi2 [duplicate]

After it happened, smoke comes out near the micro USB port of the rpi. I replugged the power supply of he rpi but this time, the power LED(red) doesn't turn ON while the green LED keeps on blinking. ...
1
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1answer
58 views

Use USB as power only, no filesystem access on external device

I have a USB powered dash-cam that runs off a normal cigarette lighter for its power. I have a use for my car to run a raspberry pi and I wanted to use the pi to power this camera. I have written ...
0
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3answers
4k views

Using a quickcharge power brick to run a Pi 3

I usually use my phone power brick (rated at 5v 2.5Amps) to run my Pi 3 and it works fine for the most part. Now I bought a new phone which supports something called fast charge. So the power brick ...
1
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1answer
526 views

Raspberry Pi Zero usb port not working and no network access

I have a Raspberry Pi Zero V1.3. I recently tried making a portable device running Retropie. I attached a TFT-screen using the ports on GPIO. After a while I was trying to install modules for the ...
0
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2answers
246 views

How much power can I draw from the USB ports on a Raspberry Pi 3?

I am attaching my Pi 3 to two delicate sensors via USB. My question is, if i was to take the power cords from the sensors and attach them to a male USB cord. The problem is, anything more than 5.5V ...
0
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1answer
75 views

Pi Model 1A won't connect to my router via Ethernet cable

I have an old Raspberry Pi 1 Model A that I am trying to fire up for the first time. I followed the Ethernet Gadget tutorial exactly: I inserted an SD card into my laptop (MacBook Pro) I used Etcher ...
0
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1answer
84 views

How to power an RPi Model 1A with my Mac?

I have a MacBook Pro and a Raspberry Pi 1 Model A. I'm just trying to power the RPi (I need a power source). I've searched hi and low, and the best/easiest solution seems to be finding a USB A male-to-...
0
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1answer
115 views

Can a smartphone acts as a power supply to a Model 1A?

I have the following USB MicroB-to-A cable that I use for charging my phone (Samsung Galaxy S7 Edge): I'm wondering if I can power my Raspberry Pi 1 Model A with my phone?! The USB-MicroB end would ...
2
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2answers
570 views

Is it safe to switch off power to the Pi? [duplicate]

I'm planning on using 20+ R Pi Model B+ to run animated videos on 20+ PC screens, for an exhibition. I'm using Pi Video Looper, which runs on start up, and detects movies on a USB stick. I would like ...
2
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2answers
112 views

SSHing from Mac into Pi A

I have a Raspberry Pi 1 Model A, as well as a MacBook Pro (running Sierra 10.12.6), and would like to: Use a USB cable (from Mac -> RPi) to provide my RPi with power/voltage; and; and SSH into my RPi ...
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0answers
285 views

RPI Zero W gadget after plugging in turns my PC off

Hello I am making a rpi zero USB gadget but something is wrong with it I am sure that pads don't connect to each other
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1answer
918 views

Raspberry Pi not booting up over USB power supply

I am doing some stuff with Raspberry Pi. I have successfully burn my OS on SD card. I am able to boot up the system when I provide power with charging adapter. But when I powered up with my laptop USB ...
0
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1answer
586 views

Usb hub devices not recognized after reboot

I've currently got a headless Raspberry Pi set up to play music. In my previous home I had an ethernet connection, and everything was fine and dandy. Then I moved, and now I have to work over WiFi. ...
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0answers
76 views

How to fix Raspberry Pi hanging after start with 2 sound card controllers?

I have a Rpi 3 using with two sound card controllers (CM108). Rpi always hang after start if I connect sound card controller via usb but if I disconnect when booting and connect after booting is ...
2
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2answers
212 views

Vibration-induced power loss problem

I am a pilot using a Pi 3 as an ADS-B receiver for a gyroplane. It works really well provided I don't try to have the Pi mounted to the aircraft anywhere. As soon as I do, the vibration seems to cause ...
0
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3answers
74 views

Raspberry pi power issuses

i just want to supply power for other devices which uses 5 v dc from the raspberry pi by cutting and soldering the wires and also i want to connect all the USB ports with mouse keyboard WI-FI dongle ...
2
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3answers
12k views

Pi Zero W power through usb socket

Can I power a Pi Zero W and still use the usb hub at the sametime with this?
0
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1answer
1k views

Touchscreen with extern power supply

So, I have a 7 inch touchscreen from waveshare. The touchscreen works via HDMI to get the image and the power and touch function goes via usb to the pi. So the power comes from the pi... The problem ...
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2answers
6k views

How can I control power to a USB powered device?

I'm pretty fresh to the Raspberry Pi scene and decided my first project is to design a smart humidifier for a Cigar Humidor. I looked online at some projects other people have used, but it involved a ...
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0answers
237 views

RAVPower USB Battery Pack as Power Source [duplicate]

I know there have been several questions about USB battery packs posted throughout Raspberry Pi forums across the internet and I have read as many as I could find but I still feel like I don't have a ...
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0answers
115 views

What happen if I power the Raspberry with both the USB and external power voltage simultaneously? [closed]

I'm newbie on Raspberry pi. I just want to know, What happen if I power the Raspberry with both the USB and external power voltage simultaneously? Would this burn the controller?
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2answers
79 views

Powering External Devices

I am wanting to use a Raspberry Pi 3 to communicate with two Texas Instruments CC2538s (over serial USB), I am wondering if the RP will be able to provide enough power over its USB ports to power ...
0
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2answers
643 views

Does the pi 3 have data lines?

I saw a tutorial that said you could ssh into a Pi Zero by using a different port and modifying various boot files, would this work on a Pi 3? Does the micro USB used for power have data lines?
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0answers
332 views

How to give PS3 controllers charging handshake on connected powered hub?

I have a Raspberry Pi 3 with a powered USB Hub ( 7 port Anker ) running retro game OS Lakka. The PS3 controllers work great with the system, but I want to be able to charge them as well. Currently ...
3
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0answers
174 views

Pi 3 - insufficient USB power available for dual-band Wi-Fi adapter?

This question says "How much current can draw from the USB ports? ......The limit for Pi3 is 1200mA." However, my Rosewill RNX-N600UB Wi-Fi dongle will only operate in the 5 GHz band when plugged ...
2
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0answers
901 views

Trying to get 3g connected to Raspberry pi

So I have on hand a 3g usb dongle that I'm trying to get connected to the raspberry pi, I've used the process described in: https://www.thefanclub.co.za/how-to/how-setup-usb-3g-modem-raspberry-pi-...
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1answer
2k views

Power Supply for PI Zero [duplicate]

I was thinking about getting a cable for Pi Zero, this one: https://www.adafruit.com/products/1995 But it's 2.4 ampere, won't that overcharge the little Pi Zero and damage it? The specifications say ...
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1answer
57 views

USB unmounts after first access

I am currently running Raspbian Jessie on a four-node Pi cluster server. I run an nginx load-balancer on one, and three Apache2 server clones on the others. I recently added a new domain and virtual ...
5
votes
1answer
571 views

Pi Zero OTG with backup power?

I have my Pi Zero connected to my laptop in OTG mode and it is scheduled to take temperature readings every 5 minutes, then send the data to the laptop on the hour. I was wondering if I was able to ...
1
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1answer
1k views

Raspberry pi powering issues

I am using Raspberry Pi 3 with latest pixel image: Linux raspberrypi 4.4.21-v7+ #911 SMP Thu Sep 15 14:22:38 BST 2016 armv7l GNU/Linux In the right top corner of the connected lcd screen, there is a ...
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0answers
607 views

Raspberry Pi B+ power-supply and USB problems

I have two Raspberry Pi B+. One of the two is rather unstable (details below) and I would like to understand if it is just a defect or if I might have broken it so that I can avoid making the same ...
2
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1answer
1k views

No power on Pi-3 USB ports after 2 succesful booting

First time on the Raspberry Pi family, I just unboxed my Pi 3 model B with two successful boots after installing Raspbian. Later I tried to boot again and I got a yellow flash symbol at the left side ...

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