Questions relating to the Raspberry Pi USB ports and specific Raspberry Pi USB devices and device interaction.

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Raspberry Pi USB Devices

I have two USB RFID. They are connected to Raspberry Pi and sends data to pi. How can I know which one is sending data? Note: Running only one RFID at the same time. Thanks
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28 views

Keyboard and Wi-Fi dongle don't work after updating kernel [on hold]

I have installed Raspbian on my Paspberry Pi and was experimenting with developing for it. I have followed this tutorial and cloned the kernel on an Ubuntu VM to cross compile it with raspberry tools. ...
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0answers
27 views

USB Issues with recent kernel build

I am trying to roll my own image for the raspberry Pi, I am using a B+ model Pi. What I want to do is build my own kernel and for now have it load busybox or something similar, but I seem to be ...
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1answer
28 views

Mounting one USB stick to multiple locations

I have a USB stick permanently mounted to my Pi to increase its storage capacity and to reduce strain on the ever so volatile SD card. At present, the USB stick is mounted to one of the users' home ...
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1answer
111 views

Multiple Display Screens

I want to build a mini multimedia system based on the raspberry pi B+, which has 2 display screens: The main screen (like a 42" LED TV), which plays the main video in Full HD. HDMI RCA/AV/Composite ...
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1answer
38 views

Raspberry Pi as a link between a scanner and cloud storage

I've never had a Raspberry Pi in my hands. I'm just looking for a device to perform a specific single task and I wonder if Raspberry Pi could be my solution. My situation is this: I've got a portable ...
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1answer
19 views

Can I use PS/2 barcode scanner with the Compute Module?

I'm about to start a project for the Compute Module where I use a barcode scanner but I don't know if it's better to use the PS/2 or the USB version. If I could choose, I would go with PS/2. I what ...
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0answers
33 views

Running two camera at the same time (Pi Camera & USB camera)

I would like for my project to have one camera (PiCamera) Streaming video. And another USB Camera (PS3 Camera) taking pictures when I execute this function: def grabPicture(self): grab_cam = ...
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1answer
59 views

USB wifi won't connect after reboot

I have two USB wifi adapters plugged into a powered hub. When I reboot, one of them (wlan1) does not show. In order to get it to show I have to unplug it and reinsert it. Then wlan1 shows on a ...
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1answer
44 views

Is it possible to connect zigbee and a GSM modem over the same RX, TX GPIO pins of Pi?

I would like to connect a XBee module (Zigbee) and also a GSM modem for voice and SMS. From what I have seen, mostly both uses the Rx, Tx pins of Pi for serial communication. Other option would be to ...
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1answer
20 views

Missing /dev/ACMX on Arch linux ARM when connected to Arduino

I want to be able to communicate with my Arduino serially using the pySerial module; however, when I connect using usb, no /dev/ttys appear - the device only appears in /bus/USB/001. When I plug it ...
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1answer
76 views

The pi as a mobile, off-grid outdoor device

How can current Raspberry Pi power and display technology be used to create a practical, outdoor computer for light weight text editing or programming off-the-grid and in strong ambient light ...
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1answer
29 views

USB Wifi adopter Comfast CF-WU715

I would like to buy comfast CF-WU715 wifi adopter,In the description of this product they have mentioned that this is supported Win and linux. So can i use this with raspberry pi b+? description here ...
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1answer
32 views

USB drive is rejected

I stuck a USB Drive into my raspberry pi, both of which, obviously, have files on them. The pi violently told me that permission was denied, and I could not view the files on the USB Drive. Is there a ...
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1answer
136 views

Drivers for dwa-171 wifi usb dongle

I'm having trouble to compile and use drivers for dwa-171 wifi usb. I have tried a lot of things but currently i'm unable to load module. Recap of what i have done so far: Getting kernel sources: ...
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1answer
64 views

Connect my raspberry to my pc by usb

I would like know if it's safe to connect my Raspbery Pi B+ to my PC by usb please (usb to usb), I want display the micro sd card of my raspberry on my windows.
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1answer
57 views

Moving files on OpenELEC

I have a model B Raspberry Pi running OpenELEC v4.2.1. I have two attached usb sticks (formats: exFAT and FAT) and an attached hard drive (format: NTFS). When I go to the file manager in OpenELEC I ...
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1answer
57 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
38 views

RPi B v2.0 not accepting keyboards

I'm using a RPi B v2.0 ("Made in the UK" with the P5 connector). I've installed Raspbian to an 8GB SDHC class 4 card and can boot (the display shows nice boot log). When measuring between TP1 and TP2, ...
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2answers
55 views

Running raspbian from usb stick, does it matter what kind of usb stick I use?

I've read that running raspbian from an usb-stick can speed up your raspberry pi (as explained here). How to do this is clear to me, but I was wondering if it matters what kind of usb stick I'll use. ...
2
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4answers
204 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 ...
2
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1answer
51 views

How to configure a Pi model A for OTG usage (as a USB slave)

Seeing as how the model A supports OTG mode via the hardware (both the CPU and USB controller were designed for it) The USB host port inside the Pi is an On-The-Go (OTG) host as the application ...
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0answers
27 views

Ebola treatment unit wifi communication system using smart phones and Raspberry Pi without internet [closed]

I've volunteered to go to West Africa to work in an Ebola Treatment Unit this coming January. From what I've been hearing, the treatments units are going smaller and in more rural areas, thus there is ...
3
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5answers
142 views

Can I connect two Linux systems via USB?

I would like to hook up my new Raspberry Pi A+ to an older B model without having to connect the A+ to WiFi. Can I connect them somehow via USB? Can I do it with a hub in between?
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2answers
31 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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2answers
138 views

What's the best way to interface RPi with an Android app?

For my university senior project, I've been tasked with creating an Android app that will function as a HUD for the driver of a Formula Hybrid vehicle. The Raspberry Pi will gather all sorts of data ...
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1answer
63 views

Troubleshoot USB RFID desktop reader ACS ACR1281U

I have a USB desktop reader "ACR1281U" which is a basic keyboard emulation reader. When you "swipe" the card it'll output it's ID and run a ENTER-command. When I plug this into my Raspberry Pi it'll ...
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2answers
224 views

Will reformatting external hard drive to Ext4 from NTFS speed up data transfers?

I have two (externally-powered) external USB hard drives plugged into my Raspberry Pi. I use this to download torrents (using Transmission) and to share these with the other computers on the network ...
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1answer
49 views

Getting 3 new entries in /dev/ttyUSBx for each 3G dongle connected

I am trying to connect 4 3G dongles to Raspberry Pi B+, I have some troubles making them all reply to AT commands, and I see that each time I connect one dongle, 3 new /dev/ttyUSBx ports are created ...
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1answer
274 views

Raspberry Pi with USB DAC and ALSA audio not working

I finally got a USB DAC (HiFimeDIY Sabre DAC) for my Raspberry Pi (running on Raspbian Wheezy) today, but of course, just plugging it in doesn't do the trick. I've been messing around for quite some ...
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4answers
81 views

Powering a stack of Raspberry Pis

I'm looking at putting together a small stack (maybe 4 - 6) of Pis to host my currently externally hosted services, plus a router and a media server. Software setup is not a problem and basic hardware ...
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0answers
182 views

Streaming Audio and Video from a remote Raspberry Pi to my computer

Good afternoon, I've been working a couple of days on this issue. I need to set a stream up that streams audio and video (doesn't matter if I need to open seperate connections for it, as long as it ...
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1answer
70 views

How can I detect if specific USB port is being used, and then command an action?

I'm very new to Raspberry Pi/Linux/Python world and I'm trying to identify one of the ports on my RPi, so if someone for example, connects a USB Flash drive (or anything) to that specific port an ...
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0answers
30 views

How can I schedule a task to power down USB HDD and USB Wifi?

I have a RaspberryPi B+ which I connected to an USB HDD and a USB Wifi adapter. Both works great. Also, I have running a webserver and a seafile server. Now, I want to set up a task (scheduled at ...
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1answer
686 views

static sound when recording with USB sound card mic/input on a B+

I have a Raspberry Pi B+ model and I am using a USB sound card to record audio. The problem is that I am only getting static and loud humming when recording, with nothing else actually recorded. I am ...
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0answers
109 views

raspberry pi web server using USB HDD

I have to create an Apache tomcat web-server on a Raspberry Pi. However, I want to install Apache tomcat, java, mysql on an external hard disk and run them from there. How can do this? Also, which ...
0
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1answer
73 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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1answer
601 views

Barcode Scanners compatible with Raspberry Pi

I would like to buy a barcode scanner to use with Pi, so which one will be compatible with Pi..?? Something around $50 would be great, like the Barcode Scanners we use at POS (Point of Sale), ...
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0answers
39 views

How can I use an encrypted folder as a Seafile repository?

I have an external HDD connected with USB. I want to encrypt the HDD with encfs (see: http://www.howtoforge.com/encrypt-your-data-with-encfs-debian-squeeze-ubuntu-11.10) Furthermore I want to use my ...
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1answer
370 views

Raspberry Pi B+ usb port disable

Is it possible to enable/disable arbitrary usb port in ArchLinux via console on Raspberry Pi B+ and at the same time others still work?
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1answer
70 views

Can I connect Garmin Oregon 600 to my Pi B+

Seems simple enough to try but I can't find my GPS unit at the moment. I'm also not finding anything online that suggests this is possible. I want to connect my Oregon 600 to my Pi B+ and process the ...
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0answers
207 views

Raspberry Pi Model B as FM radio receiver

I've got an idea- FM radio tuner on Pi, and it could be done with usb fm-receiver and any radio app, but Pi has a bad bug- with anything connected to usb, from usb-flash to usb powered hub, sometimes ...
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2answers
101 views

Can I measure provided current/power by measuring voltage over resistor? [closed]

Background I'm trying to get my scanner (CanoScan LIDE 100, USB 2.0, back says power input 5V/500mA) working with a Raspberry Pi. Whenever I issue a scan command it usually gives me a device I/O ...
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2answers
134 views

USB Modem rebooting problem

I have a python program that sends text message using a USB modem, it works fine.. But sometimes when I reboot my device the program cant find the device, so I need unplug than plug back again to ...
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0answers
203 views

Raspberry Pi B+ direct interface with usb camera

I would like to know if it is possible to connect usb cameras directly with RPi B+...?? While working with RPi Model B, I had to use a powered USB hub to interface with my i-ball camera, but with 4 ...
2
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1answer
64 views

Can't find the menu for adding an usb game controller

A couple weeks back I was setting up my pi and going through a ton of info about setting it up and I remember coming across a menu to set up USB game controllers (the USB human interface device). ...
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0answers
36 views

Alternative to HDMI4PI?

I'm looking for an LCD kit with touchscreen support that connects over VGA for the LCD and USB for the touchscreen, with a screen that is 4.3"-5" Essentially, a less expensive alternative to this ...
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0answers
153 views

Can't get Wi-Fi dongle to work

I bought a generic Wi-Fi dongle that, according to the comments of the people who bought it, worked out of the box on Raspbian. Well, turns out it didn't. I'm struggling to make it work. I'm using ...
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0answers
98 views

Kernel module usbnet for Raspbian?

I'm looking for a faster way to exchange data between two Raspberry Pi (raspi). The ideal scenario would be, having one raspi A connected to an external hard-drive, and mount this hard-drive via ...
1
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1answer
316 views

How can a USB Bluetooth Dongle be used as login TTY

I would like to be able to use a Bluetooth Dongle - not the HC06 module, but a simple USB dongle (the pretty generic kind, or even poundshop type) as a serial login console/tty. I have already tried ...