libusb | Access USB devices from Ruby via libusb-1.x

I can't install Onboard-SDK on my raspberry PI. What I should do? I used instruction from and was blocked during use cmake ..: https://developer.dji.com/onboard-sdk/documentation/quickstart/development-environment.html

pi@raspberrypi:~/Onboard-SDK/build $ lsb_release -a

For the third time I reinstalled Ubuntu 20.04 on a Windows 10 machine running VMWare whilst attempting to install GNU Radio Companion 3.8 with the PlutoSDR gr_iio blocks. Each time failed with a different error.

I am charting my most recent attempt below. Any help is greatly appreciated.

1. Installed Ubuntu 20.04 on VMWare
2. Updated Ubuntu
3. cp ./53-adi-plutosdr-usb.rules /etc/udev/rules.d/
4. sudo service udev restart
5. checked the output of dmesg
6. Since I had no ~/.ssh/config file I ran wget https://raw.githubusercontent.com/analogdevicesinc/plutosdr_scripts/master/ssh_config -O ~/.ssh/config
7. ssh plutosdr to add to list of known hosts. I verified the IP and firmware version.
8. sudo apt-get install libiio-utils and verified I can talk to the device via iio_info -n 192.168.2.1 | grep device The following output was produced:

I have LibNFC working from the Linux terminal recognising my ACR122U Reader, and I wanted to know if there was a method for it to work through Chrome on a Linux Desktop as it is really similar to Android Support, with all the NFC device handling done by libnfc and the browser just has to know about this library instead of every type usb or other device than can do NFC.

I have tried using the WebNFC API to connect it :

I am attempting to read information from a usb device after it is attached.

The information I require are accessed through two APIs: v4l2 and libusb. Both are used through a script that is correctly called as the v4l2 part executes are expected.

I have cloned electron-react-boilerplate from GitHub, which comes with Electron 11.0.1:

I followed the adacore tutorial on displaying scrolling text (https://blog.adacore.com/ada-for-microbit-part-1-getting-started) but can't get it working on my microbit.

Maybe my microbit is a more recent version that is not yet supported? The reason I suspect this is that my board id (9904) was not supported the first time I tried to flash to the board. I used the fix described here: Unable to get the Ada scrolling text demo working on the microbit on GNAT 2019 community edition and added the following line in board_ids.py:

I'm trying to install and test my Coral Edge TPU. I'm following the instructions here: https://coral.ai/docs/accelerator/get-started/

The first step is to install drivers from the coral website, but I'm getting the following errors. I've tried running with and without admin, and uninstalling and installing again, but I get the same errors.

Has anyone else run into this issue? I'm on Windows 10.

I have cross compiled libedgetpu for Raspi-0 and I can run a minimal C++ program. However it does not detect any TPU's. (The Coral TPU is connected via USB port to the Pi-0).

I am running the latest version of Raspbian on the Raspberry Pi with Python 2.7 and 3.7 installed. For a project, I need to implement some spatial/binaural audio file playback capabilities in Python, and Pyglet (version 1.5.6) (https://pypi.org/project/pyglet/, https://github.com/pyglet/pyglet) seems to be the simplest option with least dependencies. However, I am not being able to hear audio output through the headphones. Here's what I did:

1. Installed pyglet dependencies: sudo apt-get install ffmpeg libopenal1 libopenal-dev python3-pil.imagetk python3-pil python3-matplotlib python3-scipy gstreamer1.0-alsa gstreamer1.0-python3-plugin-loader (From previous programs, the system also had cmake, python3-opencv libopencv-dev libusb-1.0-0-dev, libboost-program-options-dev and python3-numpy installed)
2. I then installed pyglet as per given in the guide: sudo pip3 install --upgrade pyglet. The installation proceeded without any errors.
3. I know that by default often, Raspberry Pi spits audio out through the HDMI port instead of A/V port. So I went to raspi-config using sudo raspi-config, went to Advanced Options -> Audio. Selected the proper option (in my case 1 Headphones). I checked if audio was playing fine through my headphones by playing couple of youtube videos and audio files on the Raspberry Pi itself.
4. I then checked if pyglet was working by importing pyglet with import pyglet in a python shell, it worked fine without any warnings or errors.
5. I launched the example program provided here: https://github.com/pyglet/pyglet/tree/master/examples/soundspace. To do so, I downloaded the repo https://github.com/pyglet/pyglet and moved to the proper directory (via cd command) and wrote: sudo python3 soundspace.py. For a brief overview, the program contains 4 instruments that can be dragged across the room with a mouse. In doing so, the audio that you hear from each instrument changes depending on position and orientation of those instruments as well as your virtual position inside the mini game. The program executes without any error being shown in the terminal, but I don't hear any sound. When I try to move the objects, the program freezes but no error is shown in the terminal.
6. Since I was least bothered about the complex program, I went ahead to create my own simple program that will play a wav file (sourced from the Pyglet's developer repo itself before anyone says the wav file is incompatible https://github.com/pyglet/pyglet/tree/master/examples/soundspace), reference from: https://pyglet.readthedocs.io/en/latest/programming_guide/media.html . Here's the code snippet: