Questions tagged [usb]

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

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1answer
620 views

Bad serial connection on USB OTG Serial on pi Zero

I am running Ubuntu 18.04 with Jakeday's surface linux kernel on a Surface Book 2. I had a serial connection working yesterday. I had this problem on another pi zero. I researched the "failed to set ...
1
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1answer
43 views

USB drive not mounting in CLI mode

I've been trying to get my USB drive to mount without having to launch into the GUI. I'm using a raspberry pi 3b+ with raspian OS. My current fstab entry for the usb drive is UUID=845-CG11 /media/...
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1answer
62 views

Can't return any values from ttyUSB0

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. Here is a simple ...
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0answers
33 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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0answers
34 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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42 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
123 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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0answers
82 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
731 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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0answers
194 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
929 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
214 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 ...
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3answers
1k 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 ...
5
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1answer
956 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. I found at Very simple OTG on pi4 and at 4 ...
6
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1answer
3k 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
116 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
43 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 ? ...
7
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5answers
7k 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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0answers
70 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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1answer
89 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
129 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 ...
8
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4answers
8k 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 ...
3
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0answers
444 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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1answer
165 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
826 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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0answers
85 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: ...
28
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1answer
9k 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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0answers
530 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
512 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
288 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
211 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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1answer
424 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
110 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 ...
2
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1answer
170 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
69 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 ...
0
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1answer
121 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
75 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 ...
2
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0answers
41 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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0answers
103 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
64 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
45 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 ...
2
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2answers
104 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
74 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'...
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1answer
890 views

Raspberry Pi as a MIDI device

Is it possible to configure RPi as a MIDI device? I'd like it to show up as a MIDI device on my computer when connected via USB OTG to my computer.
1
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1answer
704 views

Raspberry Pi 3 + USB data modem as a Wi-Fi Router

I have a USB data modem (Huawei E3131) and a RaspberryPi 3B+. I would like to use the Pi as a Wi-Fi hotspot. Pi connects to the internet via USB data modem and creates hotpsot for other devices. So, I'...
5
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1answer
91 views

Multiple USB modems issue with HUB external power

When I connect 6 modems ZTE WCDMA Technologies MSM into USB hub Terminus Technology Inc. Hub everything works fine. Modems are detected as eth0, eth1, eth2, eth3, eth4, eth5 When one more modem is ...
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0answers
35 views

how to connect my raspberry pi to pc which has no hdmi port but a 5 usb port

I am not to find out how to connect rasberry pi to my pc which has no HDMI port Any suggestions please . Thanks
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0answers
31 views

RPI 3 A+ weird behavior when no usb device connected

I have a RPI 3 A+ running a nodejs server that reads a I2C TH sensor and displays an UI with chromium on the official 7 inch display. The node server runs forever with PM2 and the browser runs in ...
0
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2answers
1k views

Raspberry Pi Zero Internet connection through USB for linux OS

I connected my Pi Zero to my PC ( Linux LMDE 3 Cindy) via USB port successfully, SO i want to connect to internet via my laptop which is connected to internet by its WIFI. I found this instruction ...
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0answers
73 views

Pi don't connect to PC via USB (Etcher built two partision in SD Card) [duplicate]

I need to connect my raspberry Zero to my PC via USB (with my Linux LMDE ), Si i found this instruction. Firstly i downloaded the Raspbian Stretch with desktop version for my SD card and i use ...

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