Relates to powering USB devices from the Raspberry Pi

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1answer
15 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
32 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
47 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 ...
2
votes
1answer
48 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 ...
4
votes
2answers
142 views

Is SD card corruption still an issue?

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
71 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
172 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 ...
1
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0answers
43 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
votes
1answer
164 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
50 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 ...
3
votes
2answers
335 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
133 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
122 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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0answers
91 views

Problem with Pi + Logitech C920 - after reboot, cam gets error - How to shutdown USB connection and restart it?

So I have a basic Pi + Logitec C920 cam setup where I want my pi running at all times taking pictures from the camera. I have finally set up to reboot the pi when it freezes. However, I have a problem ...
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vote
2answers
502 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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0answers
105 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 ...
3
votes
1answer
130 views

Raspberry Pi Franken-charger: A Mini-B-to-Micro-B Conversion

So I go to the thrift shop around the corner, and I'm met with these two boxes in the electronics' section: I'm sifting through these one by one, tangle by tangle, searching for a power adapter ...
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3answers
749 views

Power issues when connected to tv via usb

I have attached my raspberry pi to a tv and it is powered via the tv's usb port. The problem is that the raspberry pi shuts off a few minutes after it starts up. I am fairly certain that this is a ...
1
vote
1answer
413 views

Problem with an USB extension cable powering a HDD

I have a 2.5" HDD with two wires, one for USB data and another for USB power. It works perfectly if I connect the USB power cable to the power. Now, I need to move the raspberry pi and the HDD, so I ...
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vote
0answers
707 views

Can't connect to 3G using Sakis3G software

I am trying to connect to mobile network using USB dongle ZTE MF190 on my Raspberry Pi machine. I already successfuly established the UMTS connection directly on Pi's USB host, but later I added ...
0
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2answers
244 views

Mini usb power cable and ethernet connection

I bought a brand new Raspberry Pi. It came with a 5v ~ 1A power adaptor and a mini-usb cable. I plugged it in and plugged in my cat 5 into the ethernet port. The raspberry powered up but the Ethernet ...
6
votes
4answers
684 views

Long (30 to 50 foot) USB power only cable

I want to place my Raspberry Pi in a remote location to act as a surveillance camera and need to run a power-ONLY USB cable over a long distance of 30 to 50 feet. Can I safely extend a normal USB 2.0 ...
2
votes
2answers
3k views

Highest current raspberry pi can take from usb

I'm going to be working on a project from a DC power supply, and I need to know the maximum current the Raspberry Pi can handle from the USB port. I know my wall wart adapter that came with my Pi ...
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2answers
350 views

Power USB Hub from “Mains to USB” adapter

I'm thinking of building myself a small media center using a RasPi, but 2 USB ports doesn't seem enough to me. So I will need a USB Hub. I still don't know exactly what devices will be plugged on it ...
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votes
2answers
817 views

Can you transfer data through the microUSB?

The Raspberry Pi is powered through the microUSB port. If the Raspberry Pi is plugged into a computer instead of a power transformer, could you send data through that connection? I know iPhones and ...
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1answer
221 views

iPhone charges when using tethered internet (usb)

I'm using my iPhone to provide tethered internet to my Pi. However I see my iPhone is actually charging while connected. Would anyone considered this bad for the Pi? I never figured there would be ...
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3answers
3k views

Will a 2.1 Amp MicroUSB charger be OK for the RPi?

I know the RPi needs a 700 mA MicroUSB charger, but can it handle a greater amp, namely 2.1amp?
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5answers
10k views

Powering the raspberry Pi from USB + microUSB, is it safe?

I want to power a Pi model B from a powered USB hub. I got surprised that the Pi powers on with only the USB attached. A little search in the forums confirmed me that it is a working solution. I ...
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vote
2answers
201 views

Is the USB-Port generally faulty with the RP?

There is this saying that the USB-Port of the Pi(or the pi itself somewhere in it) had issues with synchronous data transmission, like sending and receiving data via bluetooth dongle at the same time. ...
0
votes
1answer
608 views

Raspberry Pi USB power from 5V S-ATA

I have a 3.5" HDD enclosure with external power supply. Inside I have a 2.5" HDD and there is space in there for the RPi. The problem is I don't want to have two power supplies so I was thinking to ...
1
vote
1answer
750 views

Can the keyboard draw too much power and cause damage?

I've been using a small, lightweight keyboard, fearful that one using a higher voltage would damage my Pi. Could I have invested in a better keyboard or did I do the right thing to prevent damage?
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vote
1answer
2k views

Serial versus USB connection for RFID reader

I'm a university student attempting to make a wall-mounted RFID reader using a Raspberry Pi device and a Parallax RFID reader. I'm still in the process of planning and ordering the components, and ...
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2answers
8k views

External power for USB HDD

I want to plug my 2.5 USB external hard drive to the Raspberry Pi, however, there is not enough power on the USB ports for it to work. I've had some problems with a cheap USB AC-powered hub from eBay ...
3
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2answers
1k views

How can I cut power coming out of the Pi's USB ports?

I have a simple device connected to the Raspberry Pi, a small USB fan. The problem is that the fan does not have a on/off switch so I must unplug the fan every time I want it to stop. My question is: ...
3
votes
1answer
263 views

Can I power two Raspberry Pis from one Powered Hub?

I have this hub: Mod My Pi 4 Port USB Hub, which is recommended for use with the Raspberry. I have two Raspberries but one Hub. My Question is: Can I power both Raspberries at the same time, without ...
8
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1answer
8k views

How much energy does the raspberry pi consume in a day?

My searching efforts have failed when trying to find this. On average, how much energy does the raspberry pi consume in 24 hours ( minimal usage vs max usage in a day AND usb vs micro usb powered)?
2
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0answers
292 views

Pi - Detecting hdmi out or power interrupted

Does anyone know of a way to script this? The idea being that using raspbmc / hdmi to TV / Tv USB to Pi mini USB (with a battery for buffer)... You could have your Pi running off the tv's usb. When ...
2
votes
1answer
557 views

3G Dongle / USB Device Appears and Disappears

I have a 3G dongle plugged into my Pi. Running lsusb only occasionally shows the device occasionally in the list. When I tail /var/log/messages I see the following: Feb 7 17:09:07 raspberrypi ...
3
votes
4answers
4k views

Powered hubs, backfeeding and safety

I've got my RPi set up as a media centre, running Raspbmc, using a powered hub to run a bunch of peripherals including terabyte external HD and a hacked-together IR remote. All very nice, but it's ...
4
votes
1answer
423 views

Power issues with 2 external hard drives connected

I'm using the B model pi which has two usb ports. I originally had 1 1TB external usb hard drive connected to it and then tried to add another 1TB drive and it seemed like that one would not power ...
1
vote
4answers
4k views

High Power USB Power Hub

I currently have four raspberry pi's connected via ethernet to each other. They are currently powered by four 1A power adapters which works fine. But I was wondering if there are any devices out there ...
8
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2answers
3k views

Powering Raspberry Pi and other USB devices through a single USB Hub

I bought a powered 7-port USB Hub, which has 7 downstream ports, 1 up stream port and one power port. My question is can I connect both Raspberry Pi and the USB devices that I want to use with ...
3
votes
2answers
2k views

one power supply for raspberry pi and external HDD

I have my Pi and a USB powered external hard disk. I am looking for a way just to have one plug for the both of them. At the moment my Kindle Charger doesn't have adequate power to power them both. ...
3
votes
3answers
4k views

DIY External Powered USB hub not working

I have put together a DIY External Powered USB Hub by following the instructions. (Instructables, htc-linux) USB hub with 4 ports 5v 2A AC/DC power supply (It varies when tested with multimeter, ...
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votes
4answers
3k views

External Hard Drive w/ Powered Hub will not mount

I recently purchased this USB hub for use with my raspberry pi. However I've been having issues with it and my external hard drive. When I plug the drive in everything appears to be okay. The LED on ...
2
votes
2answers
1k views

RPi rev 2 and USB powered harddrive

I am getting my RasperryPi Rev2 soon, and I plan to use it as a media centre. I have a WesternDigital Elements 1TB USB3 2.5" USB powered external harddrive. I know that a normal USB port outputs ...
6
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2answers
3k views

Problems with External Hard Drive - kernel: journal commit I/O error

I'm having issues keeping a 3TB USB 2.0 External Hard drive (self powered) mounted on my pi. I'm using a 1.0 A wall charger to power the pi. I'm connecting the hard drive to a powered Belkin USB hub ...
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votes
7answers
4k views

What is the lowest power, most compatible, most compact usb wi-fi adaptor that works out of the box with the Raspberry Pi?

It seems that several people (myself included) are having great difficulty getting different wi-fi adapters to work reliably with the Pi. Some adaptors seem to require excessive amounts of power and a ...
8
votes
1answer
696 views

Alternative to polyfuse mod

I have one usb device that will not work because of the limited usb current. I don't want to add a powered usb hub (saving cost and space) and I don't want to solder on my pi (polyfuse mode). Can I ...
2
votes
1answer
2k views

Raspberry Pi USB hub failure

I'm planning to create a media center with Raspberry Pi. For that I would like to attach a 500 GB USB hard disk drive that I already own. Right now, I'm trying XBian, but I already tried Raspbmc ...