cryingcavecat

Raspberry Pi on Internet via reverse SSH tunnel

HackerNews discussed this with many alternative solutions: https://news.ycombinator.com/item?id=24893615

I already have my own domain name: mydomain.com. I wanted to be able to run some webapps on my Raspberry Pi 4B running perpetually at home in headless mode (just needs 5W power and wireless internet). I wanted to be able to access these apps from public Internet. Dynamic DNS wasn't an option because my ISP blocks all incoming traffic. ngrok would work but the free plan is too restrictive.

I bought a cheap 2GB RAM, 20GB disk VM + a 25GB volume on Hetzner for about 4 EUR/month. Hetzner gave me a static IP for it. I haven't purchased a floating IP yet.

I try to avoid using the GUI to configure/run barrier so I created a simple bash script barrier-client.sh to launch my barrier client. It reads from a .config/barrier.cfg file I created to determine the client name and server to connect to.

cat ~/.config/barrier.cfg

BARRIER_CLIENT_NAME=${HOSTNAME}
BARRIER_SERVER=gilbert.lan:24800

This expects the client to already be configured to trust the server. That trust is managed by the ~/.local/share/barrier/SSL/Fingerprints/TrustedServers.txt which should have the fingerprint of the server.

The purpose of this document is to get you familiar with the concepts and command line tools involved with connecting to the internet using modern 4G LTE modems on both Debian/Ubuntu and OpenWRT.

This writeup is based on my experiences with the Sierra Wireless AirPrime MC7455 modem and a Calyx (Sprint) SIM card, but it should apply to most modern 4G LTE modems.

High level overview

These are the steps required:

Physically connect antennas

if you can access to the GUI environment, It is very easy using "disks" application.

or might be easy with gdisk/fdisk ? I'm not sure about this.

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see the reference for more detail, if you want.
https://richardstechnotes.wordpress.com/2015/12/18/setting-up-an-nvme-ssd-on-ubuntu-14-04-lts/ http://takatakamanbou.hatenablog.com/entry/2015/10/25/235600 : Japanese website

FFmpeg Cheat Sheet for 360º video

Brought to you by Headjack

FFmpeg is one of the most powerful tools for video transcoding and manipulation, but it's fairly complex and confusing to use. That's why I decided to create this cheat sheet which shows some of the most often used commands.

Let's start with some basics:

ffmpeg calls the FFmpeg application in the command line window, could also be the full path to the FFmpeg binary or .exe file

	using System.Collections;
	using System.Collections.Generic;
	using UnityEditor;
	using UnityEngine;

	public class AddUV : MonoBehaviour
	{
	public Mesh mesh;

	void Awake()

	using UnityEngine;
	using System.Collections;
	using System.IO;

	/*

	Usage:
	1. Attach this script to your chosen camera's game object.
	2. Set that camera's Clear Flags field to Solid Color.
	3. Use the inspector to set frameRate and framesToCapture