Questions tagged [usb]

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

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Prolific Technology pl2303: unknown device type

I am trying to connect a Prolific pl2303 to my raspberry pi 4 running raspberry pi os 64 bit. When I look at dmesg I get the following output: [ 31.714397] cam-dummy-reg: disabling [ 44.046197] usb 1-...
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What is better to write/read to the USB or the SD card in terms of speed and reliability?

I have been using both the SD card and the USB drive to save large files (videos) over a long period of time (weeks) and wondering what is best (and why). I have had problem with both (lags, corrupted ...
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Let the Raspberry Pi be recognised as USB mouse and forward signals from a bluetooth mouse?

I am not sure whether this is the correct stackexchange section. I would like to find a solution to use a Raspberry Pi Zero 2 W in a chain like this: Bluetooth mouse/trackpad -> Raspberry Pi Zero 2 ...
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Raspbery Pi 3B+ - My USB ports don't work, but ethernet does

This is a pretty short question. My ethernet port works, but none of the usb ports seem to do anything when I plug anything in them. This is the case with a fresh raspi os image. How can I debug this?
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Has anyone actually gotten the OTG Ethernet gadget setup to work?

Supposedly, it is possible to configure an rpi such that you can just ssh into it over a USB cable. I have read MANY guides on the internet that appear to give step by step instructions on how to do ...
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Non-english character file names get changed on their own

Same Problem Mentioned Here I am running Raspbian GNU/Linux 11 (bullseye) on a Raspberry Pi 3 Model B. I have some files on a FAT32 formatted USB drive, which stores data for a Jellyfin library. When ...
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High CPU load when using latest kernels (5.10+) with USB to serial

I'm using Raspberry pi CM1 in embedded application, communication over RS485 with some other HW. Protocol similar to MODBUS - small packets. Request/response as fast as it gets. USB to UART chip is ...
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Webcam resolution problems on pi zero

I have connected a USB webcam to my pi zero w (v1) and when I take a picture with ffmpeg $ ffmpeg -y -f v4l2 -video_size 640x480 -i /dev/video0 -r 0.2 -update 1 /home/pi/webcam/still.jpg It tells me ...
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Argon ONE V2 with 128 GB SSD not booting (but on random basis)

This is really confusing for me. My Argon One case with M.2 SSD do not boot sometimes giving below error: usb2-port2: Cannot enable. Maybe the USB cable is bad? usb2-port2: Cannot enable. Maybe the ...
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Back and forth communication between Pico and PC

I am making a Pico powered PWM fan controller, and I currently have 2 potentiometers to control the fan speed. I am however thinking about writing some software in Python to modify the speed. The ...
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uv4l WebRTC stream not working on Raspberry Pi zero 2 w

I want to use WebRTC over my Raspberry Pi zero 2 w with an external webcam, so that I can communicate to other raspberrys, computers or smartphones. Problem is, that I'm very new to this topic. I ...
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(Pico) USB serial connection having noise?

I'm having some trouble trying to make a simple USB IO demo to test the Pico. Apparently, the USB serial connection seems to be noisy, and always puts something into the UART buffer even though I am ...
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USB for KNX detected but not recognized

I'm using a Raspberry 3 for some home automation. I installed openHAB 2.5.5-1 that runs on top of Raspbian GNU/Linux 10 (buster). I use a device (OWL CM160) connected to the USB to record on a remote ...
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Cannot connect to Internet with USB Tethering Raspberry Pi 4

I am using a Raspberry Pi 4, which is connected to my workstation with a usb cable. The goal is to be able to access the internet through the Pi4. I can already connect to the Pi 4 through SSH, but ...
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How to install LTE USB Huawei EE3372 on Raspberry pi zero?

HELP ! I never worked on Rasperry before, only arduino. Been trying for some time now to install LTE USB modem, Huawei EE3372 on a Raspberry pi zero. Found several instructions on the internet, some ...
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How to send wifi and local servers over usb to computer

So what I want to do is send wifi and local servers over usb to computer. So the raspberry pi connects to the internet fine and is hosting a server on it. What I then want to do is connect it to my pc ...
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RPi4 doesn't show `tty/USB` for a USB connected camera

I have an RPi camera and a USB camera connected to my RPi4. lsusb: pi@raspberrypi:~ $ lsusb Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 001 Device 004: ID 0c45:636b Microdia ...
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Headless Pi Zero W 2, SSH over USB fails with permission denied error

I'm trying to get headless SSH access to a Pi Zero 2 W using a USB cable from my Mac... However the SSH is failing with "Permission denied, please try again.". What am I doing wrong? These ...
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How to set up GPSD for a USB GPS/IRNSS receiver?

I am using a Raspberry Pi 3B with a Quectel L89 EVB kit (the receiver). The receiver is connected to the Pi through the USB port. The pi Identifies the connected receiver at ttyUSB0. I'm able to see ...
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How many HDDs can be connected to a raspberry pi zero 2w (by using usb hubs)?

Trying to find out how many drives I can connect to a raspberry pi 2w. Basically how many devices the host controller supports. More information: this is a for a Chia (crypto) harvester. I would be ...
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Apache DocumentRoot USB drive

I am trying to run apache with DocumentRoot set to /mnt/usb, where I have a USB drive mounted. Here are the contents of 000-default.conf: <VirtualHost *:80> ServerAdmin webmaster@...
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USB SSD Disconnecting

i have a Raspberry pi4 with 4GB of Ram linux: Linux raspberrypi 5.4.79-v7l+ Since 2020 i'm using my Raspberry as a small homeserver and it worked great with deConz smarthome and unifi and more. But ...
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AT- serial port communication with USB modem breaks ([Errno 32] Broken pipe) after upgrading to Stretch or Buster

Good day, I hope you guys are good. My name is Francis From Nigeria. I have been using raspberry for a while. I had to upgrade from Jessie to Stretch because my favorite raspberry pi 3B model is ...
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Pi 4 stops recognizing USB devices beyond 8 or so devices

I've noticed a similar question closed as a duplicate of this question about too many USB devices in general. This is not the same thing, as it applies only to the Pi4. The background here is some ...
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Enable shell interface on USB but not UART

I have a headless setup running on a CM3+ board. The custom interface PCB I'm using breaks out UART0 on pins 51 and 53, and USB on pins 165, 167 etc. The USB port usually has a WiFi antenna plugged ...
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USB permission denied for non-root (e.g. lsusb) with latest Rasperry Pi OS

We have one Raspberry Pi OS with build e2bab29767e51c683a312df20014e3277275b8a6 (bullseye 11, from 2021-10-30, kernel 5.10.63), in which lsusb -t works normally and shows all devices. With the newest ...
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Why Raspberry Pi 4b is slower when boot up from USB flash drive than boot up from microSD card?

Providing that what I've read in this article is true I'm wondering why it's faster to run Raspberry Pi 4b from microSD, than it is to run it from decent speed (200MB/s read) USB Flash Drive? Is the ...
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How do I use the TinyUSB module in my local c/c++ projects of RP2040?

I am trying to set the pico in usb device mode. The example code given work fine, but as per my application I want to use the tinyUSB module locally. How do I do that? Consider the example of pico-...
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raspberrypi kernel: [14247.511414] mmc0: timeout waiting for hardware interrupt

Setup = Rpi > USB HUB > USB TTL adapter/cable > 2 LTE modules. Protocol = AT Commands. Problem = mmc0: timeout waiting for hardware interrupt. Question = Any investigation method and ...
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USB sticks stop working with Windows 10 after being used with a Raspberry Pi 4 [closed]

I have a problem with my Raspberry Pi 4 2GB that involves USB sticks: I only have a minimal knowledge of both Linux and Raspbian so I don't know how to handle it. My problem is: each time I use an USB ...
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2 votes
1 answer
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SSH over USB stops working after Pi reboot

I followed the guide to enable SSH over USB: https://artivis.github.io/post/2020/pi-zero/ On Host Computer: Ubuntu 20.04.3 LTS, fresh install Ubuntu host has the USB Ethernet connection IPv4 set to &...
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Is the serial device connected well?

I'm using rapberry 3 B+. and Connect to a serial to usb device. The following is dmesg after connection. [ 5021.125504] usb 1-1.2: new full-speed USB device number 6 using dwc_otg [ 5021.272788] usb 1-...
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How to edit coherent_pool setting via cmdline.txt

I have a problem with connecting multiple USB devices to a RPI3B+. I found this solution which suggests that setting coherent_pool=2M in cmdline.txt resolves the issue: https://github.com/raspberrypi/...
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How to Use RTC Module (DS1302) to specifically Execute a Program at a Certain Time

I had already completed a Setup of DS1302 on my Raspberry Pi 3B+ and fortunately its working just fine. I also already solved the Problem of Turning On and Off the USB Port using "uhubctl". ...
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Raspberry pi 4 USB 3 ports not working

i experienced some serious problems with my Raspberry Pi 4 regarding my USB 3.0 ports. I was using the raspberry as a server (torrents, ftps, http etc...). To store the data i opted for a 1Tb usb hdd ...
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Raspi3b how to get boot from USB to work?

I have a Pi3b and an PI3b+ Also I have 2 USB Sticks with different versions of Raspian both Sticks boot on the PI3b+, none is booting from the Pi3b I followed the procedure to set the usb-boot flag (...
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Keep UART Bluetooth enabled during boot with USB Bluetooth adapter installed

I have a Raspberry Pi 3 Model B Rev 1.2 with a built in Bluetooth adapter on the UART, if I plug in a USB Bluetooth device, both Bluetooth adapters are enabled and work. However, if you reboot the RPI ...
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Is it possible to connect multiple USB devices to the I2C bus on RPI?

I want to control lots of USB devices from a single Raspberry Pi. So far I have only tested with RPI4 and I could only connect about 5 devices concurrently. The limitation is caused first by the fact ...
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Moved from main Stack Overflow: Udev Rules Not working with Rasberry Pi - Teensy connection

I am pretty deep into this now and operating at about 50% understanding. We have a Raspi 3B+ running Ubuntu 20.04 for Raspi. We have a Teensy 3.7. They are connected together with a USB cable. I know ...
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Raspberry pi Zero 2 W Chitubox Mass Storage

I've been working to setup my rpi as a USB disk for my Flasforge 8.9 3D resin Printer. I've simultaneously succeeded and failed at this twice. In my first attempt, I used OTG (modprobe g_mass_storage) ...
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Raspberry Pi wont connect to Mac via ethernet cable an eth0 IP keeps changing

I have set up my pi as a WAP and I usually ssh into it via a ethernet cable connected to my Macbook. everything worked yesterday but when I booted it up today it won't ssh into my pi. I set up my ...
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USB GPS dongle doesn't return consecutive GSP traces

I used this USB GPS dongle to retrieve GPS traces of user's trip. Device configuration is successful. pi@raspberrypi:~ $ cgps -s ┌───────────────────────────────────────────┐┌──────────────────Seen 17/...
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How to connect USB CDC devices?

I have a Zebra MC3300XR SERIES RFID reader that support USB CDC, how can i read the scanned RFID programmatically in the raspberry pi? is it possible?!
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Does 2x singstar microphone with usb adapter work with raspberry pi 3?

I am planning to make my raspberry pi into a karaoke machine using probably either ultrastar or pikaraoke. There is 2x singstar microphones with usb adapter (used) selling in game shop near my place. ...
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Pi can't make WiFi, Bluetooth and USB device detection work and boots in command line every time. Is there a possible fix?

My Raspberry Pi 4B 8GB RAM has TwisterOS. A power outage happened and then the Pi boots in CLI only at first. I have to execute 'startx' everytime I boot. Then some of my settings were changed, like ...
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Missing USB Termination on CM4

we are facing USB connection issues with our CM4, which opened a new question concerning the usage of USB with it. To function properly, USB apparently needs Pullup/Pulldown resistors (see here and ...
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USB Boot only works intermittently with USD-SSD Adapter on Pi 3

I have a Pi3 with a Sabrient USB-SSD Adapter. The disk works fine and can be mounted. However, when I try to use it as a boot disk, it works only intermittently. Most of the time, there seems to be a ...
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2 votes
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Connecting to a u-blox7 USB GPS sensor

I am trying to connect to a U-Blox7 USB GPS sensor, following the steps outlined here. The device is detected, but not receiving GPS data. I am not not in a shielded area. Checking that the device is ...
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Possible to send data from a Pi Pico via USB while running CircuitPython?

I have a question on the interaction between Pi Pico, CircuitPython, and USB. I need a way to send a data stream from the Pico to another computer where it will be received on a USB port (it's the ...
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How do I set permissions on a `/dev/bus/usb` node?

I am getting an "Access Denied" on a USB port '/dev/bus/usb/001/004' on a Raspberry Pi 3B/4/4B that is running Raspbian Lite. When I issue the command: ls -l /dev/bus/001/004 I see the ...
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