Questions tagged [usb]

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

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10 views

Can't return any values from ttyUSB0 [on hold]

I'm using a SICK S300 scanner connected via Diagnostic cable to my Raspberry Pi, and it shows the connection as /dev/ttyUSB0 however I can't retrieve any data from it whatsoever.
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18 views

Voltage drop when using inclinometer

I am working on a project that uses an inclinometer, which sends analog signal to an Arduino Uno via adc pin. The signal is then sent from the Arduino to my Raspberry Pi 3 B+ via the USB C cable. My ...
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28 views

shell script does not invoke define variable in autostart script

I try to use the raspberry pi for power point presentation. I want to run this as auto ( I mean once the raspberry pi started or rebooted the power point presentation should run). Basically it works ...
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18 views

Pi0W Crash on VNC Forwarding but not through SSH Tunnel

Short version: Pi Crashes when forwarding vnc port, but not when ssh tunneling the port. Full version: I've an old snowleopard OSX machine which has a defective keyboard and wifi, but I wanted to use ...
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15 views

Keyboard only working properly, if plugged in AFTER bootup?

If i plug my little keypad into my raspberry pi model 3+ and turn it on, it will boot and for a few seconds and a couple of key strokes it works... And then stops. It still shows in LSUSB but won't ...
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16 views

Using IR Remote usb c-type for android with raspberry pi 3

How can this usv device availiable? make device driver? thank you for reading
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36 views

My Raspberry Pi crashed after pulling out USB drive from it

My Raspberry Pi's OS is Raspbian Stretch Lite. My Raspberry Pi crashed after pulling out USB drive from it. I'm not able to access it via SSH. I have connected the SD card of my Raspberry Pi to my ...
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2answers
63 views

Is it possible to boot from both USB and SD-card

After following official USB boot instruction I was able to write program_usb_boot_mode=1 to OTP and boot from USB. But it looks like am not able to boot from SD-card anymore. Are these options ...
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23 views

Arduino Mega to Raspberry pi 3 Uart communication stops after a short while

I have been trying to setup a data stream from Arduino to rpi using an USB to Uart converter. I am using 4 startbytes and then reading all 36 bytes of data at once. Baudrate, parity and stopbits are ...
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1answer
28 views

usbmount runs correcty but mount does not show up

I have installed usbmount on Pi 3 "Raspbian GNU/Linux Debian 10 (buster)". After rebooting or pugging in a USB hard-drive, I see this in /var/log/syslog: Jul 25 15:44:03 gbox usbmount[538]: loaded ...
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59 views

Ugreen USB Soundcard - Microphone IN fail but Speaker OUT work

I am using the Ugreen usb soundcard because I have to build an SPL measuring instrument. I am using a Raspberry PI 3B+ with Debian. I've config the asound.conf in this way: pcm.!default { type ...
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26 views

reading EMG on Rpi3 using Teensy 3.2 on usb serial

We are using MyoWare EMG sensor and reading the RAW EMG pin as well as filtered SIG pin on the board. What it basically does is sends an analog value as a fraction of the input Voltage, which in this ...
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2answers
35 views

How to clone a ssd which I am using to boot

I have an SSD that is connected via USB to SATA cable to the Pi. I have a lot of files and settings saved on this SSD, I wanted to make a backup of this on another SSD, such that if something happens ...
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2answers
81 views

Resizing partition on an external disk renders it unusable as a root partition?

I'm attempting to configure my raspberry pi 4 to boot from an external disk, and it works pretty well! I've configured it to boot from the partition ID I get from sudo blkid corresponding to my boot ...
2
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2answers
95 views

Can I power raspberry Pi 4 with variable power supply?

I'm trying to power my new Raspberry Pi 4 via an external power supply, that only has positive and negative leads coming out of it. So I can set that to 5 volts, but then I need to connect it to the ...
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56 views

How to make a splitter cable for the USB2 OTG port on the RPi 4B?

According to the answer to Where is the USB2 OTG port on the RPi 4 Model B located? the Raspberry Pi 4B has a "hidden" OTG port in the USB-C power connector. My first idea to use this port was to ...
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1answer
112 views

What's different about a crontab reboot?

I have a python script to log data from a USB weather station and present it via a flask front end. The USB on the pi (Pi2 model B) is flaky and occasionally hangs after 24-48 hours. The flask app ...
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2answers
30 views

Raspberry Pi 3 will not display to HDMI monitor nor ssh

I have Raspbian 9.9 installed on the SD card which runs fine and displays to my monitor via DVI to HDMI adapter. I formatted a 1TB SSD to ext4 and followed the https://pimylifeup.com/raspberry-pi-...
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0answers
33 views

Why does usb drives autmount only for pi?

Attached usb drives are automatically mounted in /media/pi/ What makes that they automount in that directory ? Obviously this is configured somewhere.. What would be the way to customize this ? ...
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4answers
693 views

Where is the USB2 OTG port on the RPi 4 Model B located?

According to this answer the Raspberry Pi 4 Model B has a total of five USB ports (two USB3 host, two USB2 host, one USB2 OTG). Where is the fifth USB2 OTG port located and how can I use it? Can I ...
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41 views

Internet Through USB

Is it possible to get an internet connection for a Rasberry pi zero from a USB connected to a Win 10 pc? or is it possible to connect to a Bluetooth wifi Hotspot without an OS on a Rasberry Pi Zero?
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20 views

How to pass through usb serial data

I have two slave USB devices, one microcontroller and one real-time target machine (the latter is interfaced with a USB to RS232 cable). I would like to send serial data from the microcontroller to ...
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1answer
24 views

Updating python code with usb

I have a folder in the pi/home directory with python code. Is there a way to update (replace) these files by using one of the usb ports? I would like to be able to plug in the usb, reboot the pi, if ...
2
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1answer
19 views

USB WiFi dongle not recognized as network interface: ar9271

I'm running raspbian stretch on a Pi 3. I used these instructions, to use it as a wifi and ethernet router with systemd-networkd while USB tethering with my phone: How can I set my up to be WiFi AND ...
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2answers
240 views

Raspberry 4 usbmount not working

As the title suggests, I am having issues on the new raspberry pi 4 with buster and USBMOUNT. Well, it's not working. At 3b+ there was a similar issue, you had to edit a file and change MountFlags ...
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0answers
43 views

uv4l usb camera stream not working

I am using a raspberry pi 3b+, trying to make the usb camera work with uv4l streaming. These are the packages I've installed: uv4l uv4l-raspicam uv4l-raspicam-extras uv4l-server uv4l-uvc uv4l-...
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35 views

Performance of OS install on SD vs USB 3

I was wondering if I should think about installing the OS on a USB 3.0 stick and using the USB 3.0 port rather than the Class 10 Micro SD card to enhance read/write speeds. Is there a performance ...
4
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1answer
437 views

OTP - Disadvantages of USB boot

TL;DR; What are the real-world disadvantages of setting the OTP on Pi3B for USB boot. A bit longer : As we know the Pi3B+ is pre-configured for enabling USB boot, but The Pi3B needs one-time ...
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21 views

ttyusb don't appear in raspberry

I work with a LTE modem. Normally when I plug it, ttyUSB0/ttyUSB1/ttyUSB2/ttyUSB3 appear. Suddenly it stops working and I don't know what happened. Why does it happen? Thank you in advance Update: ...
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1answer
6k views

Does the Pi 4 resolve the Ethernet+USB bottleneck issue of past versions?

The Pi 3 (and previous models) had an issue of bottlenecked bandwidth when using Ethernet and USB simultaneously. Is this resolved in the Pi 4?
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12 views

C920 cannot register after removing uv4l

I have a pi 3b+ running Raspbian stretch. c920 had been working out of box with the official v4l2 driver. I install UV4L to play with the webrtc features. But found some problems. So I did an apt ...
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93 views

How can I setup USB OTG with a Raspberry Pi Zero W and an iPad over USB-C using Arch Linux?

Arch Linux systemd-networkd I want my Raspberry Pi Zero W to show up as an ethernet device to my iPad. It is doable. It's been proven to work. The problem is in the details. After ensuring there is ...
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2answers
89 views

VNC Client on Raspberry PI Zero

I need to use VNC Client on Raspberry PI Zero. It doesn't have network interfaces, so I probably need to connect Raspberry via mini-usb to my Android phone. How to configure such network (via USB)? ...
2
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1answer
38 views

Would it be possible to boot a live distro from DVD or CD-rom

For a secure key generator using Yubikeys to back-up master private keys and seperate Yubikeys to containt authetication subkey private keys I'm looking for a way to run a Raspberry Pi zero with no ...
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0answers
37 views

RPI 3B+, Wifi super slow (10x slower than onboard) when using USB Wifi despite huge antenna

TL;DR, usb-wifi works, but it's extremely (!) slow compared to onboard wifi, even though the dongle has a big antenna and a a better signal quality. I looked far and wide and did all I could find, but ...
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27 views

Prevent Automount of Camera

I am about to build a photobooth with my Canon DSLR and a RasPi. Now when I plug the USB of the camera, raspbian will automatically mount it and prevent my command line scripts from using it (device ...
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1answer
98 views

USB Wifi driver installation Error: /lib/modules/4.14.98+/build: No such file or directory. Stop

i need to install the USB wife EDUP into my raspberry zero, so i try installing the CD container driver which is similar to main GitHub container _RTL8188C_8192C_USB_linux_v4.0.2_9000.20130911_ ...
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0answers
29 views

RTL wifi dongle does not create an interface at startup and doesnt connect

I have a Raspberry pi 3 with Raspbian GNU/Linux 9.9 (stretch) and I am trying to use a USB Wifi dongle (Realtek Semiconductor Corp. RTL8188SU 802.11n WLAN Adapter). The external wlan adapter has an ...
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1answer
47 views

USB3 drive and Pi Zero

I'm trying to connect a 3.5" drive to a Pi Zero. However, the drive is not detected by the Pi: pi@lolcat:~ $ dmesg | grep sd [ 0.913523] sdhci: Secure Digital Host Controller Interface driver [ ...
2
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1answer
43 views

raspberry pi serial communication function (serialdev)

I'm working on a radar project and I want Matlab to send commands and collect radar data remotely from the USB port of a Raspberry Pi 3 B+. My setup is as follows: I have the radar connected to the ...
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1answer
29 views

Boot's cmdline.txt and config.txt files changed after install new package in rasbian at pi zero (USB OTG Connection)

I am using raspberry zero with USB OTG to my linux LMDE based this instruction , so when i install something like lcd 5inch driver, the files which changed in the boot's SD card folder. and the files ...
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0answers
10 views

Suddenly halt when updating the raspi zero

I am updating the raspi zero (sudo apt-get update)via USB OTG Ethernet via my laptop internet but suddenly my terminal which connected to raspi zero hang and don't respond you could see in this pic ...
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0answers
30 views

Raspberry Zero USB connection Lost and don't detected again in Linux OS As USB Devices

I was installing my LCD 5 Inch TFT files in my raspberry Zero which connected to my PC (Linux LMDE), and after a while i have a mistake pressed accidentally some keyboard bottoms and then with this ...
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0answers
24 views

Stream USB mic input to 3.5mm audio jack output

I am trying to stream a USB mic input to the raspberry pi's built in 3.5mm audio jack output. I am not sure how to do this. I essentially want to use the Pi as a DAC. How could I do this?
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25 views

Raspberry Zero USB connection Lost and wasn't detected again in Linux OS As USB Devices

I was installing my LCD 5 Inch TFT files in my raspberry Zero which connected to my PC (Linux LMDE), and after a while i have a mistake pressed accidentally some keyboard bottoms and then with this ...
1
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1answer
56 views

SD card vs USB stick: best secondary storage for sudden shutdowns projects

I have a Raspberry Pi with Raspbian Raspbian Stretch Lite on a read-only SD card which periodically saves files on the secondary storage. Since there will be sudden shutdowns I'm wondering which ...
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0answers
32 views

RPi B, dietpi, usb soundcard amplifier, mpd and equalizer - usb and alsamixer equalizer impossible?

The last two days I am busy to config the USB sound on a dietpi config and with success. I turned the default Rpi sound off and use only the USB soundcard amplifier (Logitech). I can play files with ...
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0answers
38 views

RPI 3B eats USB sticks?

I have a number of RPI3 Model B's that I have set up to boot from USB sticks. Initially, they all booted successfully. Some of them have stopped booting after a (variable) period of time. If I replace ...
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2answers
43 views

Cannot communcate to multiple raspberry pi's over usb ethernet

I have setup a Raspberry Pi 3 (master) connected via USB to two Raspberry Pi Zero's (slaves). I have enabled dwc2 and g_ether on all devices. When I attach the USB's I automatically get IP addresses ...
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1answer
24 views

USB OTG with power supply connection to Raspberry Pi Zero

I have connected my 5.2 V 2 A tablet charger to power USB port of Raspberry Pi Zero and USB port to my Linux OS Lenovo laptop, according to this post I must cut the 5 V pin of USB PC port, but I didn'...