To reliably list attached cameras and see which /dev/videoX path corresponds to which device, the best tool is v4l2-ctl.
First, install the utility if you don't already have it:
sudo apt upgrade -y
Saurabh Datta dattasaurabh82
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dattasaurabh82
/ webcam_test_pi_cli_nongui.md
Created
July 9, 2026 16:07
PI OS (minimal cli non-desktop version) webcam spike test
dattasaurabh82
/ guide.md
Created
June 9, 2026 16:53
Beginner-friendly markdown guide covering Pi NVMe cloning process from SD Card
Clone a running Raspberry Pi OS install from the microSD card to an M.2 NVMe SSD (via the Pi M.2 HAT+) and boot fully from the SSD. No desktop, all over SSH.
Tested on: Raspberry Pi 5, Debian 13 (trixie), Pi OS Lite 64-bit, 256 GB NVMe.
Tip
Why not SD Card Copier?
That is a desktop GUI tool. On a Lite/headless image, it does not exist. This guide uses rpi-clone instead.
dattasaurabh82
/ HUNYUAN3D2.1_WITH_WRAPPER_FOR_TEXTURE_PAINT_LINUX_SETUP_GIST.md
Last active
May 14, 2026 02:54
Hunyuan3D-2.1 in ComfyUI on Linux
What it took to get visualbruno/ComfyUI-Hunyuan3d-2-1 running reliably on Linux with PyTorch nightly + Blackwell
- The default Hunyuan3d-2.1 workflows in Comfy Do not bake texture.
- kijai/ComfyUI-Hunyuan3DWrapper is a little behind and mostly targeted for Win installs and older py torch
Auto-launch a tmux monitoring dashboard on Raspberry Pi boot (headless/CLI). Press any key within 10 seconds to skip and drop to shell.
Note
I use this for a pi that I carry on-site, either when I'm teaching or on a client side, where I need a MQTT broker and also where wifi setup shoudl be easy (So, my pi is running: headless pi wifi configurator)
dattasaurabh82
/ Testing Github Actions workflow, locally.md
Last active
February 19, 2025 00:04
dattasaurabh82
/ instructions.md
Created
July 18, 2024 04:31
git merge main from dev -- ignoring all changes
To make the main branch exactly like the dev branch by ignoring the changes in the main branch and overwriting it with dev:
git fetch originCheck out to the main branch:
git checkout main
dattasaurabh82
/ git_repo_sync.md
Last active
March 21, 2024 01:00
Steps to sync between to separate private repos and deploy a web-app in gh-pages
Imagine you are making small webapp to control a hardware protoytpe.
It is part of a set of internal tools and utilities that you are building for a bigger project, to aid you in testing or something else.
This repo, since it is a client project, is private.
Now, let's say the private git repo, you are maintaining those utilities is hosted in github as: github.com/user/utility_repo
At some point you want to make the web-app go live, you don't want to bother working on a bare-metal VPS, you want to just simply use gh-pages because it provides ssl support out of the box, it's simple, lean and gets the job done, while your repo still remains private.
dattasaurabh82
/ Shopify Shipment Setup.md
Last active
November 24, 2023 17:45
- Setup Shopify Store and focus on store settings for online store only.
- Specifically focus on Checkout, Markets, Zones, Shipment, tax details etc.
- We are only using Shopify API for checkout and order fulfilment and not the whole store. Meaning, customers will only see our custom coded website and will only see the Shopify checkout UI during checking out.
- Ignore Product details: I have setup the product information correctly. No need to ask further question. We have 1 product with the correct variations and price.
- Ignore Shop theme and design: We do not need that as we are only using Shopify API to connect to our own custom coded web shop. WE ARE NOT USING SHOPIFY STORE FRONT END.
- We do not need shop pay.
- Ignore Billing Settings
dattasaurabh82
/ watch_schematic_screenshot_video_steps.md
Created
September 27, 2023 23:33
# The screenshots I took, have resolutions 144x144
# The screenshots I took, have dimensions 2990x2080
# I combined all the front images and back images of PCB separately into 2 separate videos, each with framerate 8
ffmpeg -r 8 -f image2 -s 144x144 -i picf%04d.png -vcodec libx264 -crf 15 -pix_fmt yuv420p wf.mp4
ffmpeg -r 8 -f image2 -s 144x144 -i picb%04d.png -vcodec libx264 -crf 15 -pix_fmt yuv420p wb.mp4
# changed the resolutions
ffmpeg -i wf.mp4 -vf scale=2990:2080 -preset slow -crf 18 wfrs.mp4
ffmpeg -i wb.mp4 -vf scale=2990:2080 -preset slow -crf 18 wbrs.mp4
dattasaurabh82
/ CH340N_linux_fix.md
Last active
April 16, 2025 21:33
Fix Driver issues for CH340N usb serial chip in Linux (Ubuntu 22.04)
Tested on Ubuntu 20, 21 earlier and they were not working. So upgraded Ubutbu to latest 22 version.
The issue is: The built in Kernals of Ubuntu and many Linux Kernals (between ) have the CH340 drivers broken / have bugs and not fixed (from kernal 5.4.0-87 and above)
Note: I didn't try on linux kernal 5.4.0-86 my self. I though I will see how is the situation in the latest linux kernal (as of 16/05/2022)
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