Relates to powering USB devices from the Raspberry Pi

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Pi / Pi 2 using modern 'smart' USB Power Adapters to supply power to the Raspberry?

Once upon a time there was only one way to charge a usb device and that was done at 5V and 500mA max, or so I've been told. 'Modern' USB Power Adapters like the Apple 1Amp, 2Amp and 2.4Amp and many ...
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26 views

I have just searched for a usb Y cable to power my HDD from another power source but also transfer data to my Raspberry Pi

So here the Y cable I'm thinking of buying it's to connect my Western digital Elements HDD to a different power-source rather than using the Raspberry Pi as an only usb power but also using the other ...
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1answer
79 views

How do I turn off my Rasperry Pi when it's connected to a battery pack?

I currently have my raspberry pi set up such that it's connected to this assembled 320x240 2.8" TFT + Touchscreen that I got from Adafruit (https://www.adafruit.com/product/1601). I am also powering ...
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1answer
35 views

Can I use a power only USB lead to connect Rpi and HDMIPi?

The HDMIPi assembly was originally designed for Raspberry Pi A, with a short lead supplied to power the RPi from the HDHMI driver board. When an RPi B+ or RPi 2 is used, the supplied lead is not ...
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52 views

Does the Raspberry Pi have USB power saving mode?

I have an issue with my Raspberry Pi 1 (Model B). It's connected to a USB hub (external power supply) with a card reader (keyboard emulated - plug&play). Everything works fine and all but if I let ...
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1answer
2k views

Is setting `max_usb_current=1` to give more power to USB devices a bad idea?

I've been searching around for more information on the /boot/config.txt configuration directive max_usb_current, trying to find out exactly what happens when that is set to 1, but it's hard to find ...
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1answer
123 views

How can I connect a kinect to my raspberry pi

The kinect plug looks close to USB but it's not quite the same. How do I get this to plug into my rpi? Do I need to cut the plug type and attach a regular usb plug instead? I've looked for a ...
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1answer
60 views

HDMI to micro usb?

If you got a Micro-USB cable and adapted it to a HDMI cable, then connected it between your Raspberry Pi B+ and your Kindle Fire HD, would it work as a monitor?
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5answers
329 views

Will a Duracell 9V battery power my Raspberry Pi for 24 hours? [duplicate]

Will a Duracell 9V battery power my Raspberry Pi (plus camera module) for 24 hours? I've tried power banks and the 50,000mAh rating seems a bit exaggerated, considering I'm getting just 5/6 hours ...
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118 views

Attached Storage Mount Problem

I recently purchased a WD Passport Ultra 1tb to use as a backup on my Raspberry Pi B+ but for some reason I can't see /dev/sda1 to mount it. After doing ls /dev/ only /dev/sda appears. I've ...
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63 views

Ext. HDD I/O Error - suspends, power issues?

My external USB HDD becomes repeatedly inaccessible after a long time of usage/idleness. The same thing happened before with a very old disk and I thought it was just failing. But I do have the same ...
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4answers
150 views

Raspberry PI A+ Power requirements

I want to get a raspberry pi a+. I am trying to figure out how I can power it. I will use it with a USB Bluetooth WiFi Combo Adapter. The power consumption of the combo adapter is less than 1.5W. As ...
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1answer
79 views

Why does plugging a usb 2.0 memory stick into a 2011 raspberry pi running openelec cause it to crash?

I have a 2011 raspberry pi set up and running with openelec (v13.2 "GOTHAM") running on it. When I power up the raspberry pi with a USB 2.0 memory stick connected to it, it causes the screen to flash ...
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1answer
36 views

problems running XBMC on 2011 Raspberry Pi

I have a 2011 Raspberry Pi and have been trying to get openelec (v13.2 Gotham) to run on it. I am powering the raspberry pi using a Sony phone charger outputting 5V at 850mA. Whenever I plug in the ...
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4answers
690 views

Can the pi power this 2.5" drive without a usb hub?

I want to use my PI model B as a NAS, but I'd like to avoid using a usb-hub. I have a 2.5" western digital 1tb usb drive (this one), and a 2A power supply for the pi that I'm planning on using with ...
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1answer
59 views

Is it safe to connect arduino with motors to pi via USB?

I'm planning to connect raspberry pi to DAGU mini driver, just as shown here. I have a question regarding the minidriver drawing current from the Pi USB port. As far as I know if there is no battery ...
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1answer
104 views

Pi dead: U3 IC gets extremely hot

I got two Pi's, and both of them have the same problem. To the first one, I connected a 3.3V power supply to pin 1, following which the board didn't boot and no LEDs lit. The board seems to be dead, ...
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2answers
37 views

Read load of battery via USB

I don't know if it is the right forum to ask the question but I just post it here. I have a power bank connected to my rpi b+ and I want to ask if it is in general possible to read the current load ...
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1answer
92 views

Connecting a 12V USB device to Pi [closed]

I'm planning to use a long range USB RFID reader (12V) like this with Pi. As Pi USB can supply only 5V, how can I connect it to Pi USB, if it is not external powered..??
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0answers
77 views

Pi not recognizing USB ports with an adequate PSU

So I got the Raspberry Pi B+ about 3 weeks ago and it hasn't been functioning 100% correctly... I have a PiHub to power my ehdd (1tb WD Elements), Wifi Adapter Realtek 8188CU, and (usually) the ...
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73 views

Why did my wireless USB adapter suddenly stop working on a powered USB hub after it worked for weeks?

I set up two Raspberry Pis to power a 50" television each about a month ago. On each I have Raspbian running, with slight modifications so that it boots into a Midori browser kiosk that, by default, ...
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3answers
2k views

How to use usb ports on raspberry pi?

Raspberry Pi B+ has four USB ports. But pi cannot provide enough power required for USB devices like external hard disk. Now, if pi cannot provide power, what's the use of having more USB ports? What ...
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1answer
1k views

Extra power to usb port on raspberry pi

I have a model B raspberry pi and an external hard drive that requires more power than the usb port on the raspberry pi can provide. Is there any way to increase the power to the usb port so that I ...
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4k views

Why do people use powered usb hubs?

I have the RPi B+. It has four usb ports. At the moment I am powering an Arduino Mega, a small RFID reader and a keyboard. I plan to also power a wifi dongle and an arduino uno. Will this just work? ...
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1answer
278 views

Is it possible to toggle individual USB ports?

I have a motion-detecting PiCamera set up running, which is fine and dandy until it gets dark. I could get another Pi with the NoIR camera instead, but a simple solution occurred to me the other day - ...
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1answer
171 views

RaspPi / raspbmc is turning on my TV

newby here, I have a raspbmc connected via HDMI to a CEC enabled smart TV. power is also coming from the TV via USB - everything more than fine, I really like it. BUT: When I turn off the system ...
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2answers
700 views

Power external hard drive though USB — safe to use USB charger?

I would like to connect an external hard drive to the Raspberry Pi. This hard drive must be powered through USB and comes with a cable that has two ends (to ensure sufficient power). The cable is ...
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1answer
268 views

powering pi with a 5v regulated power supply

I am considering the following 5v regulated ps module. I have a coinacceptor that connects to a board. I am going to cut the coin acceptors 12v cable and put the -ve and +ve behind the regulated ...
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2answers
613 views

Raspberry pi reboots when usb wifi (Edimax EW-7811UN) is plugged without usb extension cable

This is an odd issue that there have been quite a bit of discussion about even on this forum. Possible suggested issues range from insufficient power to bad internal hardware design of the pi. When ...
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1answer
356 views

How to connect the connect to a PiHUB?

I just got my PiHUB but there are no instructions on how to use it :( I need: To connect it to 3 USB devices, The USB devices need to be controlled by 1 Rpi, That Rpi would (preferably) be powered ...
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1answer
189 views

Are there USB powered speakers with an Analog port?

I have built a raspberry Pi Jukebox, specially modified for a handicapped user (voice feedback on all songs, large buttons) but I have one.... last.... problem. The speakers I used ran off the analog ...
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1answer
98 views

Voltage controlled current amplifier [closed]

How to amplify current 1A, 5V from the 5mA, 5V??. More Particularly, In input side, i have 10mA and 5V and output side required 1A, 5V. Thanks.
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2answers
3k views

Looking for 3G USB Dongle (with low-power consumption )

I'm developing for my #iot project with a device, a Raspberry PI, positioned in places without any internet connectivity. So I'm looking for a really cheap internet connectivity solution; using a ...
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41 views

External USB HDD with powered usb hub

Please has somebody some idea how to fix what I described at http://www.raspberrypi.org/forums/viewtopic.php?f=28&t=47218&p=546350#p546350? It worked yesterday and today I attached a Nexus 7 ...
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1answer
97 views

Felt current on my Pi, could this have damaged it?

Here is what happened. I have a Belkin Surge Protector. I have connected my iPhone charger (5v 1A) to this and it powers my Pi. I have also connected powered USB hub, transcend hub3k to this surge ...
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1answer
73 views

RPI with GPIO connector AND micro usb Power supply?

if I use both the GPIO connector and the micro usb does this double the Amper value and the voltage value or only the amper value ?
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2answers
349 views

Safest way to power a hungry Wifi adapter and the Pi from a single 5V source

My Pi is destined for the skies, so it will receive power at roundabout 5.3V via the BEC (battery eliminator circuit) which will be capable of delivering up to 10A (heavy duty BEC it is), so sourcing ...
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2answers
68 views

Battery packs without “blip”

The Battery pack I am using for the has just one problem... plug in the pack to charge the pack itself, and it blips, rebooting the pi (not the mention shutting down most ungracefully.) Are there any ...
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1answer
128 views

Powering external hdd exclusively from sector

Hi I'm working on powering my Sony external hard drive disk. I want to power the drive from the sector and link it to the RPi without drawing any current from it (and also because i'm a afraid of ...
5
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1answer
4k views

Is SD card corruption still an issue? [closed]

For a project I'm using a 16GB class 10 Sandisk micro SD card (in an Adafruit micro SD card adaptor). I've got a Model B Raspberry Pi that's not overclocked, nor has it ever been. Since I'm running it ...
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1answer
705 views

Simulated unplugging of Huawei E220 USB modem

I found out that my 3G modem keeps closing the connection every couple hours. I tried to set up a reset script, everything works fine and I know how to do it, with one little problem: The only way ...
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1answer
3k views

Hard drive not detected by the Pi

My raspberry pi is unable to detect my external hard drive, I'm wondering if I might have messed up in my setup. The hub is connected to the pi in two ways: from the hub to the pi's microusb to give ...
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0answers
190 views

Raspberry Pi & Focusrite Scarlett 2i2

I'm trying to build a project which involves a Pi connected to an Arduino over USB and to a Focusrite Scarlett 2i2 over USB as well. A small diaphragm condenser microphone is to be connected to the ...
2
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1answer
2k views

USB stick gets very hot

I have a 32GB, USB 2.0 ICIDU USB stick that I want to connect to my Raspi for storing ownCloud files. The stick is FAT32 formatted, from factory. My Raspi is running ownCloud 6 using this image: ...
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2answers
112 views

Will customizing USB pinout help with backfeeding issue?

I am trying to make my Pi (B) work as both Wi-Fi router and NAS. Setting up software for that isn't a problem for me. But all comes down to connecting USB devices and power supply issue. Apparently ...
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2answers
7k views

What to know about powered USB hub?

I'm a bit lost in electricity stuff, but I want an USB hub to power supply my Raspberry Pi and my hard drive. I know that there are lists of USB hubs for Raspberry Pi that works perfectly, but I want ...
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4answers
408 views

Alternative ways of attaching power to a RPi

I found a nice metal case to house a Raspberry Pi for a project. It has near-perfect dimensions and properties, but it lacks space to attach a power supply via Micro USB. I think the main USB ports ...
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1answer
296 views

Need advice on completing my raspberry vehicle setup

Lets start with my goal: I want to control my raspberry pi tracked vehicle via wifi using nodejs. See the attached picture, it is awesome already. I've got the following working: rolling tracked ...
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2answers
2k views

4 USB camera framerate and resolution

I understand that the raspberry pi can record from USB webcams. My question is, if I use a powered hub to get extra USB ports, what kind of frame rate will the raspberry pi be able to record video at ...
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145 views

RPi shutting down after powered from 5V pin

My RPi is working fine and automatically connecting to wifi when powered from USB but when I try to power it from a regulated 5V supply on the extension headers I can see that it goes on but then ...