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

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22 views

Raspberry Pi 3: Raspian USB Sound as default

I have a Raspberry Pi 3. I have installed the latest version of Raspian (NOOBS). All I want to do is set the USB audio to the default output. I can test that the speaker is working by using ...
2
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0answers
11 views

USB devices gets new ttyU* while still attached raspberry pi 2

Conditions: I use RP2 for data collection purposes and i am testing its limits. I use it next to diesel engine and its alternator.(I know pi is not for industrial use and this is a prototype.) There ...
1
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0answers
9 views

sakis3g on raspberry pi2 not accepting any other interface other than ttyUSB0 or ttyUSB1.. how to make connection on other ttyUSB*

i am newbie to linux and raspberry pi. On my raspberry pi 2 , i use sakis3g to make the connection successful,it works fine when it is connected to ttyUSB1 or ttyUSB0 but wen i reboot the system with ...
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0answers
11 views

Slow TCP throughput with zd1211rw USB WiFi

I'm doing some throughput testing between an RPi "rpi-src" on WiFi and a wired ethernet PC "dest" attached to the WiFi AP. "dest" listens on a TCP port with nc (netcat), streams received data through ...
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0answers
7 views

Bluetooth A2DP conversion to / emulation of MTP

My goal would be to control music playback via car radio so that phone could stay in my pocket. Car supports only USB Mass storage and MTP protocols (actually Apple is supported as well but that is ...
0
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1answer
17 views

TV as Plex Client

As far as I know, the RPi cannot decode h.265 videos. I've tried to watch h.265 videos on my TV by connecting an external hdd and it was working without problems. So is it possible to use the TV as a ...
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0answers
12 views

Usb permissions

I can only get output from a connected usb robot arm when I run my Python script in sudo. I assume I need to give normal user permission for the usb device. How would I do this?
3
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1answer
65 views

How is the USB power regulated on +/2/3 models?

This question and my very tentative (dubious even to me) speculation that the cause might be the main polyfuse on the 5V regulated supply common to all (?) Raspberry Pi's left me wondering about how ...
0
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1answer
27 views

Run a command when wifi adapter is disconnected?

Is there any way to detect when a USB Wi-Fi adapter is physically disconnected from the Pi, and run a command when that happens? I'm using the Raspberry Pi 1, model B+, and the adapter is connected to ...
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0answers
20 views

Boot hangs if usb drive is plugged

I'm trying to set up a usb drive (fat32) as an automatic backup. I'm using raspbian (installed with NOOBS) booting to command line (no GUI). If I plug it when the pi is already booted I can mount and ...
1
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1answer
31 views

“RNDIS/Ethernet Gadget” Share Internet

(Moving this from apple.stackexchange.com) I've connected my Pi Zero over USB to my OS X laptop and under Preferences -> Network it shows up as RNDIS/Ethernet Gadget, with a self assigned IP. It ...
1
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2answers
13 views

Is it possible to write data directly from a mobile to a PC through the mobile's SD card slot?

I have to questions: -Is it possible to write data directly from GoPro to a Raspberry Pi through the GoPro's SD card slot? -How does Micro SD card function? I would like to use my GoPro (hero 1) as a ...
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0answers
54 views

Is my Pi dead after plugging in four USB hard drives, if the power and ACT LEDs still light up?

My Raspberry Pi 2 B (rev a01041) has been working great for ages. I usually have two hard drives plugged into it. Yesterday, I plugged in another one. Today I plugged in a fourth. Immediately, the Pi ...
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0answers
16 views

Reading data from Accupost USB Scale

I received an Accupost PP-10USB - 10 lbs USB postal scale for a project that I am working on. I would like to read data from it using this code erjiang/usbscale. After plugging it in and running ...
3
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1answer
78 views

Busted USB port on a Raspberry Pi 3?

One of the 4 USB port on my new pi-3 isn't behaving Is the port busted, or is there something about the Raspberry 3 USB system that I don't understand. (Or both)? If I plug a camera in any of the 3 ...
0
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1answer
33 views

Raspberry Pi Zero as Hardware Bypass

My girlfriend has been working on a project for a high level university CS class. The requirements are that input is take from a gaming controller, steering wheel, et al, and sent simultaneously to a ...
1
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0answers
32 views

Reading / writing to USB storage on a Pi

I set up my Raspberry Pi about 6 months ago, (October) and everything seemed to be working fine where I could using Tight VNC to remotely access it and download torrents e.t.c. However, eventually ...
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0answers
30 views

Usb and ethernet port don't work

I have raspberry pi 2 model b. And now the raspberry pi port doesn't work. Not the usb port and not the ethernet port. I tried to replace to power supply to my phone charger. I have tried to combine ...
0
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1answer
23 views

Setting separate usb cards for output and input on Raspbian Jesse

I'm a newbie. I have a separate usb for sound output and sound input(mic). How do I configure Raspbian Jessie to default to them?
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2answers
88 views

Raspberry Pi USB 3 HAT or alternatives

I am looking for a cheap way to utilize USB 3.0 speeds for my external peripherals. The latest Pi 3 model B still has USB 2.0 ports and from what I have read, until USB 3.0 prices fall, it will be a ...
0
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1answer
50 views

Help to build Mini PCI-E add-on card for Raspberry Pi 2

Is it possible to build an add-on card that has mini PCI-E slot, SIM slot and LED and that can be attached to Raspberry Pi 2 GPIO header? It would save me one USB port and it would be more neater ...
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0answers
61 views

USB Microphone Raspberry Pi

I am using Raspberry Pi 3. What I am trying to do is test my USB microphone. I first type in "lsusb" to see if the raspberry pi detects my device. It does. "BUS 001 Device oo8: ID 0d8c:013c C-Media ...
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0answers
78 views

Unable to make USB sound card as audio card 0

I am using Ubuntu Mate in Raspberry Pi 2. I want to change use my USB sound card as default audio card. For this I check my audio card number from command aplay -l and this is my output:- **** List ...
0
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1answer
40 views

Kiosk python app shutil.copyfile files empty on restart

I have a kiosk app written in python which is launched on startup (starting x server but not the window manager as I learnt about here), usbmount is installed to handle automatically mounting pen ...
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0answers
13 views

Rasbperry Pi 3 as an USB storage device [duplicate]

I would like to know if it is possible to use the Raspberry pi 3 as an external USB storage device. My goal is to plug it to a computer with an USB to USB cable an being able to store some files in a ...
5
votes
2answers
328 views

max_usb_current possible values

I have found many hints mentioning that setting max_usb_current=1 in /boot/config.txt allows USB ports to draw up to 1.2 A My question is what are other possible values that can be assigned to ...
0
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0answers
29 views

USB Serial control

I am having a problem with an USB serial connection to my receiver and couldnt find anything on the internet. I am now hoping any of you guys can shed some light on my problem. I did as follow: I ...
0
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0answers
32 views

Issue interfacing GPS module with USB to ttl cable

I am following this tutorial https://learn.adafruit.com/adafruit-ult ... rything-up on connecting GPS module with pi. However, when I do sudo cat /dev/ttyUSB0 I do not see any output from the device. ...
3
votes
3answers
1k views

How do I know which USB device is my device?

I'm using two devices which are an USB to Serial converter and a GSM module. Both of them are shown as /dev/ttyUSB(0 and 1). How can I determine which file descriptor (FD) is which USB device?
0
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2answers
55 views

Multiple questions about power and USB hubs

I am planning to use my RPi as a basic desktop. I have a few questions I am using the first model of the RPi I am planning to connect a keyboard, a mouse, a bluetooth adapter, a WiFi adapter, and ...
0
votes
1answer
31 views

How tp get USB to USB UART console without linux

I'm trying to develop my own OS kernel from scratch for the raspberry pi and I want to be able to debug my code from my computer over putty through a cable. Now I've did a little googling and found ...
0
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1answer
76 views

How i can boot Raspbian from USB? [duplicate]

I got hands on my Raspberry Pi 2 Model B in just few months and when i used it soo much the SD card got bent in here and it want to snap apart but when i removed it i was trying to rebend it back with ...
0
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1answer
31 views

Does anyone know if has the wifi keeps doing USB disconnect problem been solved [closed]

Does anyone know if the wifi USB disconnect problem been solved in newest kernel and drivers?
0
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1answer
59 views

How to transfer files from PC desktop app (written using nw.js) to Raspberry Pi?

Here's my situation: I wrote a desktop app using nw.js (a node.js-based platform to write desktop apps within an offline Chromium browser that has access to the file system). Users will make ...
0
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0answers
48 views

JUYAO dual arcade controller will not register when playing games on Retropi

I am building an arcade cabinet and almost have the entire thing complete. However I wired up my Joystick last night to find that it was not working correctly. I have all of my buttons and joysticks ...
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0answers
34 views

How to connect multiple Pi Zero ethernet gadgets to a Pi 2?

I followed this guide to turn my Raspberry Pi Zeroes into ethernet gadgets and I did not change anything in the /etc/network/interfaces or /etc/dhcpcd.conf files. All of the SD cards were fresh ...
0
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0answers
32 views

Raspberry Pi Zero Ethernet Issue

I've found a weird issue while using the pi zero. I have a RJ-45 Ethernet to MicroUSB adapter that works, only when plugged into my NETGEAR WN2500RP Extender. I've tested the connection on both the ...
0
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0answers
28 views

Problem Ralink driver for RT3092 with miniPCIe

Please help me. I have purchased a Raspberry Pi3 board and a mini-PCIe Wi-Fi board with a chipset of Ralink rt3092l. I have connected the Wi-Fi board using a USB-miniPCIe adapter board, but PI3 could ...
2
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0answers
62 views

802.11ac and 802.11n at 5GHz on Raspberry Pi with Windows IoT

Is it possible on a Raspberry Pi 2 (or 3) with Windows 10 IoT Core to have Wi-Fi 802.11ac and 802.11n at 5GHz? I know the list of compatible hardware: Hardware Compatibility List - WiFi Dongles ...
0
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1answer
241 views

Kali Linux Wifi Monitor Mode

I have installed Kali Linux on my Raspberry PI2 Model B. I have also bought Raspberry PI USB Wi-Fi Dongle. When I try to put the adaptor into "monitor mode" using airmon-ng start wlan0 I get an error ...
0
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0answers
244 views

Raspberry pi 3 analogue (headphone jack) audio output and usb microphone as input

How can I use the default audio analogue (headphone jack) output and as input a usb microphone together for voice recognition? I want to use the onboard audio output and record from a usb microphone, ...
0
votes
1answer
101 views

Qt 5.5 application using usb device as keyboard and hidraw

I have a specially designed board connected via USB to my Raspberry Pi 3. This board provides a keyboard interface. But it also provides additional USB "reports" that can be retrieved - for sensor ...
0
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0answers
37 views

Does a USB reed switch exist?

Thinking on building something to warn me when we forgot to lift the baby's crib gate. But I'm not interested in building the electronics to hook the switch to the RasPi, so wondering if there's ...
1
vote
1answer
91 views

Solder USB to Raspberry Pi 2

Alright guys, I have a question in how to solder an additional USB port to the board. I have an old security camera system dvr that I've taken apart and gutted to install my raspberry pi and tb hard ...
0
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3answers
87 views

Why do the USB ports and Ethernet port share the same controller?

It is my understanding that the USB ports on the Pi share the same controller as the Ethernet port. This means if one was to use the Pi as a NAS, data transfer over the network would be restricted, ...
0
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0answers
41 views

USB sound card detected but not listed in aplay -l

I am using a Frontech JIL 0815 sound card with the Raspberry Pi model 2 B using the latest version of Raspbian. The USB audio when connected is shown under lsusb and dmesg, but not as a card under ...
0
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1answer
65 views

Raspbian won't boot when hard drive is connected

Not sure if this has anything to do with the make/model of hard drive I'm using, but when I connect my WD MyPassport Ultra to my Raspberry Pi 2 and then reset Pi, Raspbian doesn't load. If I just plug ...
1
vote
1answer
52 views

dual usb power supply for 2 rpi

i'm working on a double solution in my one with 2 rpi one is for the domotic part (a rpi 1b+ with ethernet and wifi dongle, no usb device or hdmi display for now) and one as mediacenter (a rpi 2b with ...
0
votes
3answers
65 views

RasPi sees keyboard but does not accept input

When I run lsusb (on a separate keyboard) the keyboard that I have to use shows up but when I press any of the keys it doesn't input. The keyboard used to work on the RasPi and still works on a ...
3
votes
1answer
280 views

USB camera with new Pi 3

I'm trying to take snapshots with my Pi3 + USB camera. I've tried a few different things, but all with different results. I've tried: mplayer -vo jpeg -frames 1 tv:// And the output text is: ...