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

0
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2answers
21 views

How to increase voltage of USB ports on the Raspberry Pi 3 Model B?

I have been trying to build a Raspberry Pi laptop, and I found an issue where my screen required power at all times to run , so I decided to plug the screen in to the USB port in the Raspberry Pi. ...
0
votes
1answer
42 views

Using a RPi Zero to build a WiFi USB Stick with `modprobe g_mass_storage`

I am trying to build a WiFi USB Stick using a Raspberry Pi Zero W. I want to be able to plug in the RPI to a computer or whatever device able to output data to a USB port and then the specific mounted ...
0
votes
0answers
17 views

Why isn't my USB drive listed in /dev/block?

I plugged a USB drive into my Raspberry Pi and am trying to find it in /dev so I can mount it and use it. It doesn't appear to be listed in /dev/block. It's a headless Pi that I'm controlling from ...
1
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0answers
19 views

Is perfectly uninterrupted alsa sound over USB possible?

I am playing a sine wave from a Rpi3 via pure userspace ALSA to the hw device of a USB sound card (using the official PCM example, no sound servers installed). But the wave never stays perfect, after ...
0
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0answers
20 views

USB Webcam frame rate and resolution relationship

I have a Logitech c920 USB webcam connected to a raspberry pi 3. On executing: v4l2-ctl --list-formats-ext It outputs: Index : 1 Type : Video Capture Pixel Format: 'H264' (compressed) ...
0
votes
1answer
45 views

Raspberry Pi Zero as webcam

I read some case, like using dwc2 and g_webcam in /boot/config and cmdline. but hard to understand and doesn't work. and can't find a tutorial, there are some tutorials only about serial and ethernet. ...
-1
votes
1answer
17 views

Modifying input of HID via GPIO of PI (unless there is a better way?)

Basically I want to control the input of a USB HID via one or more other HIDs. I know there are commercial options available to do this however they are closed source and expensive. I'd like to get ...
0
votes
0answers
14 views

read data of water level sensor connected to USB port of Raspberry Pi3

How to I do communicate and get data of water level sensor using USB port of raspberry pi3? The sensor has RS232 port for communication. I have USB to RS232 Adapter connected to USB port of Raspberry ...
1
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0answers
18 views

Samson Meteor USB mic - low level “buzzing”

How can I diagnose and fix this issue? I have plugged my Samson Meteor USB mic into my Pi Zero W and run the ALSA arecord program. When I do, I get a low level "buzzing" that is quite audible in ...
1
vote
1answer
34 views

Connect to 3G (yet again)

I'm trying to connect to a 3G network via a Huawei E173 modem. Thankfully it is getting recognized as a usb modem without me having to deal with modeswitch Bus 001 Device 006: ID 12d1:1436 Huawei ...
0
votes
1answer
22 views

Can't achieve process about booting from USB

I'm trying to install RetroPie on an USB stick and I want to boot on it. So I follow this instructions HOW TO CREATE A RETROPIE USB BOOT DRIVE FOR RASPBERRY PI 3 The start of the instructions seems ...
1
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0answers
22 views

Using RPi as a 4g enabled dropbox usb stick

First of all hello, I am exceptionally new to the concept of the Rasberry, however I have an application that I am hoping it will be able to do. I was hoping someone may be able to give me some advice....
4
votes
1answer
90 views

A USB modem not working on Raspberry Pi 3 Model B+

I have been trying set up USB modem on my pi (Raspberry Pi 3 Model B+) but have not been successful. The modem in itself is recognized - lsusb shows the entry for the device - but I cant't get it ...
1
vote
2answers
94 views

Output sound over USB and into a computer (no 3.5mm jack)

I am trying to make a soundboard for my computer using my raspberry pi and a touchscreen. In order to mix the pi's sound out with my mic, I need it as a separate input to my computer (my mic uses the ...
1
vote
1answer
46 views

reading a dutch 'slimme meter' has USB troubles

In the Netherlands the energy providers are rolling out smart meters which allow you measure your energy usage in your house. There's a cable that you need to buy (this one) but you should be able to ...
0
votes
1answer
63 views

Raspberry pi 3B wont boot from USB with correct OTP settings

I'm trying to boot my Raspberry Pi 3B (not 3B +) from a USB flash drive. I've added the program_usb_boot_mode=1 line the /boot/config.txt I've changed the right bits in the OTP and checked it: pi@...
0
votes
1answer
17 views

USB-Serial converter mapped to /dev/ttyUSBx on boot, but not on plug

I have a USB-RS232 converter with an FTDI FT232R chip (VID:PID=0403:6001) that is detected and mapped to /dev/ttyUSBx on boot of the RPi 3B, but does not map to /dev/ttyUSBx if it is simply plugged in ...
0
votes
2answers
28 views

Running programs, saving results

If I'm using Pi 3B+ to learn SQL and Python and doing exercises, should I install programs on an external USB drive because of limited size of Pi?
0
votes
0answers
23 views

Apple/Mac USB Keyboard with Pi Zero and 3 :-(

I brought my Pi Zero W and 3 to The Netherlands to share with my grandson what I'm doing and to equally learn what he (12) is doing with his Pi 3 - last years Chrissy present. At home (UK) I have ...
1
vote
1answer
129 views

How to power Raspberry Pi from a lab power supply via USB?

How can a Raspberry Pi be powered from a lab power supply via USB? I have a lab power supply that can easily output 5 V/4 A and I would like to use it to power a Raspberry Pi (version 3B and 3B+). ...
0
votes
3answers
36 views

Cannot SSH Raspberry Pi Zero W on Windows via USB

I am using Raspberry Pi for the first time. I did the conventional setup that most people mentioned. This includes 1.Flashing Raspbian onto a SD card Edit Config/cmdline files and add an ssh file (...
0
votes
1answer
45 views

Soldering devices to the USB ports

In this project the maker of the project desolders and removes two of the USB ports on the Pi and solders on a USB Hub to the pads at the bottom. I'd like to solder devices to the USB pads in the ...
6
votes
1answer
247 views

Boot from USB without use of SD card at all?

I have a raspberry pi whose SD card slot is broken so I cannot change the boot options at all like YouTube tutorials say, is there a way to boot my device from a USB without the use of an SD card? ...
0
votes
0answers
34 views

Strange USB behaviour with PoE hat

This might be without PoE hat too but my device uses PoE hat. Everything was working great, I have two USB ports used on the Pi: a USB hub with a keyboard and mouse and a 256GB Pen Drive And that'...
1
vote
1answer
60 views

Cannot seem to write to usb drive using pi user

Really simple problem, I have run the following commands: sudo mkdir /media/usb sudo chown -R pi:pi /media/usb show chmod -R 775 /media/usb Checked everything and made sure that pi owned the ...
0
votes
1answer
63 views

cdc_subset: probe of 1-1.1:1.0 failed with error -22

I have a FreeAgent DockStarTM Network Adapter running on a debian Stretch OS with its rootfs partition on an external USB memory stick. Using this Ethernet Gadget tutorial and this USB Mini 5Pin ...
0
votes
2answers
41 views

Is there a multiple USB to Ethernet hub?

I want to create a network of raspi 0's connected to Ethernet. Can I connect them all to one Ethernet wire via a USB hub? Thanks
0
votes
1answer
18 views

Multiple TTL sensors on serial RX GPIO 10

Is it possible to read more than one TTL sensor on serial RX GPIO 10? I know you can add multiple serial sensors on /dev/ttyUSBx Does the same apply to /dev/ttyAMAx ?
0
votes
0answers
45 views

Using Raspberry pi as USB bridge

I wanted to use my raspberry pi as USB bridge between multiple devices. We can assume that I want to connect my iPad which has POS software on it to my thermal printer. Most of star or Epson thermal ...
1
vote
0answers
73 views

Rpi 3 model B+ USB enable pin

I am using USB 3G modem with my RPi 3 modem B+. Modem gets freeze sometimes so i need to reset it. I was using https://askubuntu.com/questions/645/how-do-you-reset-a-usb-device-from-the-command-line ...
2
votes
1answer
121 views

Controlling an old APC UPS with a Raspberry Pi 3B using a USB 2.0 to RS232 Male DB9 Serial Cable

Is there a way of Controlling an old APC UPS with a Raspberry Pi 3B using a USB 2.0 to RS232 Male DB9 Serial Cable? There seems to be two apps that would be needed. One for the cable conversion from ...
0
votes
1answer
306 views

USBIP: cannot attach devices (Raspbian Stretch)

I have USBIP installed, and it seems to be working in so much as I list USB devices, but attempts to connect fail. I have tried with the raspberry pi (zero W) configured as server and as client, but ...
1
vote
0answers
41 views

CM3 - How can I use USB_OTG on carrier board? How does this differ from CMIO board?

Currently trying to figure out how to setup USB_OTG on the CM3 using my carrier board. I posted on the RPI forums and got an answer which was to connect pin 4 (ID) on a usb micro AB connector ...
1
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0answers
94 views

USB mount not able to auto mount external drive due to MTP error

I'm trying to auto mount external hard drives to raspberry pi B+ (raspbian stretch lite image) using usbmount (link). But auto mount fails with the below error saying the device is not MTP. Unlike ...
0
votes
1answer
78 views

USB RS232 turn on/off beamer

I'm streaming a video to a beamer. But I want it too turn it off after office hours. I found /opt/vc/bin/tvservice -o and /opt/vc/bin/tvservice -p to turn off the screen. But that does not turn off ...
0
votes
0answers
68 views

RPi3 's usb port fail

Mouse and keyboard does not work properly when connect to my pi3 modelB's usb port. It worked perfectly a day ago. But wifi dongle can process as usual. dmesg show below [ 3410.013515] usb 1-1.2: ...
0
votes
0answers
39 views

USB on Raspberry Pi Zero W not working

I brought out wires from the PP22 and PP23 USB pads on the rear side of Pi Zero W to an external connector. Also, took out wires from PP1 (5V) and PP6 (GND) for providing power to Pi Zero externally. ...
0
votes
3answers
250 views

Get the /dev/tty??? for raspberry pi

I'm connecting a usb to rs-485 to my raspberry pi. How do I know which /dev/ttyXXX does it correspond to? I'm using raspberry pi model b+ Update with goldilocks answer:
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0answers
29 views

My Pi seems to be duplicating my USB stick in the file manager

I formatted my USB stick and called it STORE-1 But after some time, File Manager showed me this: Before it was SETTINGS and STORE-1. Now access is denied to STORE-11 and STORE-1 and I can only use ...
2
votes
2answers
41 views

How can you detect if a USB device is powered via an USB Port?

I need to power a Raspberry Pi through the USB port of another computer. Is there any way to detect on the PC if the RPi is powered on? Running dmesg as well as lsusb commands on the PC didn't show ...
0
votes
1answer
30 views

Pi Zero system not seeing USB port

I’m a nooby who built a Pi Grrl Zero, and it was working fine. I could plug my mini keyboard dongle into the USB data port and it worked. Then I plugged in an audio adapter. That was a mistake! ...
0
votes
0answers
26 views

ALSA RPI - Can I create a virtual array of microphones using two different input devices?

I have two PS3 eye (each one has an array of 4 mics) and I was wondering if I could create a virtual microhpone array using ALSA to acquire and use the two devices as if it was one array with 8 ...
0
votes
0answers
42 views

SSH Tunnel Network interface to USB Interface

I want to SSH into my Raspberry Pi 3 B+ via a network interface, which can then SSH tunnel into another unix-based machine via USB Serial Interface. I am able to ssh into the RPI via network, but I ...
2
votes
0answers
211 views

Setting up Pi Zero W Wi-Fi through USB SSH

I am having lots of problems connecting my raspberry pi zero to wifi. I have followed a number of tutorials. 1. What I have tried This was my wpa_supplicant.conf file ctrl_interface=DIR=/var/run/...
0
votes
0answers
42 views

Receive HID Feature Report in USB Gadget mode

I have set up a RPi zero as a USB Gagdet and successfully send/receive hid reports from windows pc, but I am not able to receive or send HID Feature reports. The file /dev/hidg0 only reads HID reports,...
1
vote
0answers
17 views

USB Dongles worked on first boot okay but after restart it stopped working

I have a Raspberry Pi 3 Model B flashed with Raspbian by Etcher.io. When I booted it for the first time , I was playing some YouTube videos and it worked fine with keyboard and mouse. However, after ...
1
vote
0answers
90 views

autorun on flash drive when it's connected

I have a bash script that is on a flash drive that I would like to run automatically when the flash drive is connected to my Pi. I've seen instructions on how to do it in Ubuntu, but I can't find the ...
0
votes
1answer
59 views

Pi will not boot after unplugging external USB drive

I successfully mounted an external USB HD by editing the /etc/fstab file as detailed here, and everything worked great, until I tried booting up my Pi without the drive attached. The Pi refused to ...
1
vote
1answer
102 views

Problem with ethernet and usb controller after update/upgrade

I use a Raspberry pi 3 Model B Today I tried to update my Raspbian OS(installed with berryboot) version from 09.05.2017 to the latest version. I was ssh'ed into the raspbian pi user(root) and typed: ...
0
votes
0answers
30 views

Is it possible to “convert” from GPIO to usb?

I have an the RFID-RC522 Reader (link) which is connected to my raspberry pi 3 over GPIO. My idea is to build a case for the reader and make the reader portable. This means that I need the plug&...