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Heavydeck developer blog

All my software and hardware projects.

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Keeping the statistics low

I own a regular car, and I used to own a fairly decent bike, barely out of the ordinary with off the shelf parts and only minor upgrades. By the time my bike got stolen off of my apartment building garage, I had been using it for the better part of a decade. And to add insult to injury, my wallet on the car, parked besides the bike, got stolen as well.

Not for scrappers

With the advent of LLMs everywhere it is interesting to have a way to prevent or at least make it costly for scrappers to obtain content from your site at places where you don’t want web scrappers to read it while people on a browser can. Here I provide yet another proof-of-work implementation using well known broken cryptographic primitives like RC4 and 40bit cryptography!

Safer VNC server on Linux

Another quick thing I did. I wanted to have a VNC server on which I could connect to the screen currently being shown on my PC, unlike the default of creating a new session for a connection, and the options given were to essentially run x11vnc on a local socket, tunnel through SSH and connect to it, essentially because VNC as a protocol doesn’t seem to support any modern security features.

5GHz WiFi channel usage metrics

Wireless lan spectrum is crowded, especially if you live on a city or on a flat block, where every other dozen meters there’s a router with default settings competing for the 5GHz band (We won’t even talk about the 2.4GHz band, it is a lost cause) however, even despite how crowded the space is, some channels are consistently underutilized, and I hazard some reasons why ISPs avoid certain channels.

A virtual legacy PC, for legacy hardware

So I needed to do some analog video capture from a SEGA Master System 2, which only has a single RF out connector, so I decided it was time to put the old trusty BT 878 card to work, only issue was, my current PC lacks a PCI slot. It only has PCIe slots, so I searched for linux compatible analog tuners and I found a Conexant CX23885 based hybrid tuner, capable of analog TV tuning, composite…

Demonstrably fair raffle draws

Me and a group of friends decided to organize a vacation for a fairly large group of people, including accommodation. However we ended up having more people wanting to attend than accommodations, so we decide to just make it a raffle on who would get to go and who wouldn’t. This is pretty simple for the 4 people organizing it to do fairly. However, trust issues may arise when you have 40 people…

Fixing the Lenovo Ethernet dongle

A thunderbolt and an Ethernet port. Nice!

Playing with the UEFI shell on ARM

I installed the UEFI shell on my ARM laptop since, due to some bug, rEFInd is unable to launch on it, and I needed something to quickly set up and modify the UEFI boot configuration.

Why does a 50MB/s ISP service run at 0.5MB/s?

My ISP claims to give me a symmetric 500Mb/s connection (50MB/s effectively) but, when starting any significant download, the download speed halts to a crawl.

Airplane WiFi revisited

From my previous encounter with airplane WiFi a few years ago I had the chance to repeat the same experiment I did back then and check if the Internet feels more like something out of this century and I have to say, things have improved.