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CoD_Segfault

@se.gfau.lt
323 followers 150 following 432 posts

It's me, from that other site. Hacking on whatever grabs my interest at the time. Support my hacking habit at ko-fi.com/cod_segfault.

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CoD_Segfault @se.gfau.lt · 09/09/2026
My gummy bears have arrived!
Box containing the INDX upgrade kit for a Prusa Core One+ 3D printer.
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CoD_Segfault @se.gfau.lt · 04/08/2026
I did the impossible. This is all I'm bringing to @defcon.bsky.social this year.
A backpack and a carry on roller bag.
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CoD_Segfault @se.gfau.lt · 21/07/2026
No turning back now. @hardhat.rocks #HardHatBrigade
A black carbon fiber pattern hard hat with a hole drilled into the top. A drill with a hole saw is sitting next to it.
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CoD_Segfault @se.gfau.lt · 13/07/2026
Put together another batch of my WiFi Shurikens. Loving the fact that I can just build custom tooling to help keep everything organized.
A 3D printed tray full of assembled WiFi Shuriken PCBs. There are 8 assembled units and space for 12.A 3D printed coin cell battery holder full of batteries. There are five rows of 20 batteries.
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CoD_Segfault @se.gfau.lt · 19/06/2026
Hey there @hardhat.rocks!
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CoD_Segfault @se.gfau.lt · 14/05/2026
Life pro tip: Have a bunch of random gunk stuck in your silicone mat? Cover it in white glue. When it dries, you don't have to look at the gunk stuck on your mat anymore.
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CoD_Segfault @se.gfau.lt · 13/05/2026
Thanks! Yeah, it's the rounded quarter round. Here's a test print for reference.
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CoD_Segfault @se.gfau.lt · 11/05/2026
Also been working with @m0nkeydrag0n.bsky.social on a case for my WiFi Shuriken project. Most credit goes to him, I just have feedback. After a bit of back and forth, started maas printing today!
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CoD_Segfault @se.gfau.lt · 11/05/2026
Been a busy few weeks and not everything was this past week. Redid my living room flooring and needed a rounded piece for around the steps. I modeled and printed it in wood PLA, then stained it to match.
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CoD_Segfault @se.gfau.lt · 17/03/2026
I'm using a PicoGUS not quite as intended. I needed a sound card for a PC/104 board and realized that the pin ordering matched on the PicoGUS v1.2 and I could drop a header in place. Thanks @polpo.org for all your contributions to retro tech!
PicoGUS v1.2 card with a female header soldered to it.PicoGUS attached to a PC/104 SBC.PicoGUS attached to a PC/104 SBC.
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CoD_Segfault @se.gfau.lt · 05/03/2026
The RP2350 is the controller that coordinates the C5 scanners over a SPI bus.
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CoD_Segfault @se.gfau.lt · 05/03/2026
Got my new WiFi-Shuriken boards delivered and assembled today. They have 6x @seeedstudio.com Xiao ESP32-C5 boards and a Xiao RP2350. This thing is a scanning beast! Can scan both 2.4 and 5GHz bands in under 2 seconds.
WiFi-Shuriken v0 PCB top side. There are 3 Xiao ESP32-C5 boards, an SD socket, a Xiao RP2350, and an LC86L GNSS module.Bottom of the WiFi-Shuriken v0 board. There are 3 Xiao ESP32-C5 boards, a 74LS595 shift register, a battery clip, and a cutout in the PCB to solder to the back of the RP2350 on the top side.
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CoD_Segfault @se.gfau.lt · 16/02/2026
The Pico controls the scanners over a SPI bus that should be able to steam WiFi metadata at over 2MB/s. I'm building out the protocol to be future proof so it should support 6GHz WiFi and HaLow once appropriate hardware becomes available.
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CoD_Segfault @se.gfau.lt · 16/02/2026
Breaking stuff is just an opportunity to learn to fix it! I have been working on a high performance wardriving platform. My prototype has a Pico 2 managing GNSS, SD logging, and scanner orchestration. I currently have a single ESP32-C5 scanner, but the plan is to scale it up to dozens.
A black ESP32-C5 dev board, a red Pi Pico 2 dev board, an RGB LED currently lit red, a GNSS module, and a blue micro SD card module soldered to a green perf board.
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CoD_Segfault @se.gfau.lt · 03/02/2026
I'm in the early stages of building an escape room as a birthday present for my kid. I built out the majority of the infrastructure and now I'm working on individual puzzle elements. It took way too long, but I just got a phone ringing from external triggers.
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CoD_Segfault @se.gfau.lt · 24/01/2026
I did some work with the ESP32-C5 this week. I replaced the Side B of the @jhewitt.net wardriver.uk with a C5. I had to strip out everything but Wi-Fi scanning, but it's a beast for 5GHz. In my tests, I saw about a 30% increase for 5GHz compared to BW16. Code available at github.com/CoD-Segfault...
A Segfault Mini Wardriver v2 PCB with an ESP32-C5 module in place of the normal ESP32 in the Side B location. There is no BW16 installed, yet there are 5GHz networks detected.
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CoD_Segfault @se.gfau.lt · 28/12/2025
HVAC THE PLANET!!
Picture of a furnace made by Gibson.
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CoD_Segfault @se.gfau.lt · 17/12/2025
Started working on moving the wardriver.uk code from Arduino to PlatformIO. It's a bit messy, but it does run! I have some plans to make a few enhancements, including potentially running the code on different hardware.
Screenshot of a PlatformIO config file with options set for 2 ESP32 targets.Picture of a CoD_Segfault mini wardriver with normal data on the display.
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CoD_Segfault @se.gfau.lt · 26/11/2025
Broke 3M Wi-Fi found on @wiglenet.bsky.social today! Got a new color! #wardriving #AllTheWifi
Screenshot from the WiGLE app of the user screen. User is CoD_Segfault and the Wi-Fi found is just over 3 million.
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CoD_Segfault @se.gfau.lt · 24/11/2025
Been working on restoring a payphone. A battery leaked and caused a bunch of rust and corrosion. Was able to clean up the boards fairly well. The solder mask seems to have protected the traces, but a couple of chips look crusty. Waiting on my ATA to arrive and I can see if it works.
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CoD_Segfault @se.gfau.lt · 15/09/2025
I'm giving a talk about multimeters this weekend for @pancakescon.com! Thanks to @blenster.com for running the Hardware Hacking Village and for giving me the opportunity to present!
An analog multimeter and a smaller analog multimeter sitting on a blue silicone soldering mat. There is text that says "Don't talk to me or my son ever again."
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CoD_Segfault @se.gfau.lt · 13/08/2025
Who knew that @defcon.bsky.social inhuman badges held such power? I may or may not be human anymore. Maybe it was that bite from that goon...
A COVID-19 at home test that shows no control or test lines.
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CoD_Segfault @se.gfau.lt · 06/08/2025
Oh man, I wish I would have known. I could have powered my Pinecil on the flight!
Picture of USB ports on an airplane seat. The USB-C port is labeled 60W.
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CoD_Segfault @se.gfau.lt · 04/08/2025
#DEFCON #HackerJeopardy #DFIU #MSDOS #RetroComputing #Retro #HardHatBrigade
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CoD_Segfault @se.gfau.lt · 03/08/2025
My DOOM @hardhat.rocks hat is going to make another appearance at @defcon.bsky.social this year with some new tricks! It now plays MS-DOS #HackerJeopardy! Write your own category and I might put it on my head!
A 386 single board computer mounted on a hard hat emblazoned with the DOOM logo.MS-DOS Jeopardy with Hacker Jeopardy categories on the board.MS-DOS Jeopardy hacked to say "You fucked it up!" instead of "No."
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CoD_Segfault @se.gfau.lt · 11/07/2025
New decade on @wiglenet.bsky.social! #AllTheWifi #wardriving
WiGLE user stats for CoD_Segfault (me) showing user rank 39.
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CoD_Segfault @se.gfau.lt · 08/07/2025
I find this stainless steel to be a bit questionable.
A metal bracket with "SUS304" stamped into it.
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CoD_Segfault @se.gfau.lt · 03/07/2025
Been quiet lately, but still working on some stuff in the background. Today's milestone: A stripped down wardriver.uk side B running on the ESP32-C5.
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CoD_Segfault @se.gfau.lt · 24/05/2025
Big step day for me as well.
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CoD_Segfault @se.gfau.lt · 19/05/2025
Are you going to #THOTCON or @bsides312.org? Come find me for some @hardhat.rocks and Chicago-exclusive @wiglenet.bsky.social stickers. I'll be wearing my DOOM hard hat, so you won't be able to miss me.
4 stickers sitting on a table. One is a meme definition of Wardriver, another is "As seen on Hacker Jeopardy," one is a WiGLE logo with the Chicago flag in the background, and the last is the Hard Hat Brigade logo sticker.
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CoD_Segfault @se.gfau.lt · 18/05/2025
Did somebody say DOOM?
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CoD_Segfault @se.gfau.lt · 14/05/2025
Some days you only want your watch battery to last 45 minutes, so you fire up the @wiglenet.bsky.social app.
WiGLE Android app running on a Samsung Watch 6.
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CoD_Segfault @se.gfau.lt · 07/05/2025
Do I actually need a seat on my bike?
A yellow Schwinn bicycle with the seat removed and an AccelTex antenna attached in its place.
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CoD_Segfault @se.gfau.lt · 06/05/2025
I spent some time reverse engineering Jeopardy for DOS to run on my Doom hat. I figure it might be useful for when @lintile.lol and the rest of the #HackerJeopardy crew run into technical difficulties. Now I just need a question pool.
Jeopardy for DOS with Alex Trebek saying "You fucked it up!"Jeopardy for DOS with categories from or similar to Hacker Jeopardy.DOS for Jeopardy with a port math question. This one is "SSH plus Telnet"
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CoD_Segfault @se.gfau.lt · 04/05/2025
I know what I'm doing with this @wardriving.bsky.social Zippo now.
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CoD_Segfault @se.gfau.lt · 04/05/2025
Repost with something you own that most people don't. I have a 386SX computer mounted to a hardhat so I can walk around and have people play Doom.
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CoD_Segfault @se.gfau.lt · 01/05/2025
Looks like my DB editor is working!
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CoD_Segfault @se.gfau.lt · 30/04/2025
Making huge progress!
Custom categories for Jeopardy that are similar to Hacker Jeopardy.
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CoD_Segfault @se.gfau.lt · 30/04/2025
Reverse engineering a DOS game, for reasons.
A DOS version of Jeopardy with Alex Trebek saying "You fucked it up!"
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CoD_Segfault @se.gfau.lt · 28/04/2025
Hey @wiglenet.bsky.social, you do know that #WMD is over, right? cc: @hardhat.rocks @wardriving.bsky.social
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CoD_Segfault @se.gfau.lt · 28/04/2025
Thanks to #WMD, I finally broke 2.5M on @wiglenet.bsky.social! Thanks to all my wardriver friends in @hardhat.rocks and @wardriving.bsky.social, as well as everyone else who participated yesterday.
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CoD_Segfault @se.gfau.lt · 27/04/2025
Been there.
Picture of an Ender 5 project with an almost empty spool.
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CoD_Segfault @se.gfau.lt · 27/04/2025
Final stats on my main phone for #WMD. @hardhat.rocks @wardriving.bsky.social @wiglenet.bsky.social #wardriving #AllTheWifi #nice
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CoD_Segfault @se.gfau.lt · 26/04/2025
Looks fine to me!
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CoD_Segfault @se.gfau.lt · 21/04/2025
Seen in the wild today.
Bumper sticker that says "Trans people existing does nothing negative to you life you crybaby bitch"
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CoD_Segfault @se.gfau.lt · 15/04/2025
Got another retro PC. This one's a Celeron 366MHz. The PSU was in rough shape with caked on cigarette tar, so I opted to skip cleaning it. I used a PicoATX instead, so I had to make a plate to cover the space that the PSU was in. I used a USB-C extension from Adafruit for a clean finish.
The back of a PC with a blue 3D printed plate what the PSU normally goes. In the center is a panel mount USB-C port.The image of an old PC with a PicoATX PSU in the ATX power socket. There is a USB-C PD board attached to it.PSU with nasty cigarette tar and dust caked on.
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CoD_Segfault @se.gfau.lt · 10/04/2025
Exactly as much as she wants us to.
A book titled "What Do We Know About The Loch Ness Monster?"
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CoD_Segfault @se.gfau.lt · 07/04/2025
Helped my dad pull the engine out of his 1980 Mustang. He's got a new one coming so the original needed to come out. Also assembled a new set of shelves for our board games. We figure that we will get more use out of them if they aren't tucked away in the basement.
Engine in a 1980 Ford Mustang.Engine removed from a 1980 Ford Mustang.Set of 2 IKEA black shelves with drawers at the bottom.Set of blank IKEA shelves loaded up with board games.
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CoD_Segfault @se.gfau.lt · 06/04/2025
Me while coding the dashboard for #OperationWigleMeltDown. hardhat.rocks/wmd #WMD @hardhat.rocks @wardriving.bsky.social @wiglenet.bsky.social #wardriving #AllTheWifi
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CoD_Segfault @se.gfau.lt · 01/04/2025
I have had that day before.
Plastic case with connectors in it. There is a label on it that says "BOTTOM - FLIP OVER TO AVOID A BAD TIME."
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