C8H10N4O2

OSCP, OSWA, formerly Crest CRT, infosec worker bee. Opinions are my own. Interested in web, hardware, anything on the offensive side of things and machining and mechanical stuff. I like to make things and play with modern & retro stuff from out my lane.

2025-04-23

@SecurityWriter Im of the opinion they are not for you, but for those left behind to trigger the closure mechanism.
I told my wife I'll dig a hole with my jcb and they can bury me in the soft bit of the garden but she came up with all sorts of reasons not to, so idk what she has planned, but as she says, you wont know as you'll be gone anyway so I think we're at the humoring my hole in the garden idea stage, which suits both of us :).

2025-04-22

@da_667 Yeah you can get all sort of tube guides and hangars and stuff on temu etc to make the hose more manageable and not get tangled up in it as if you pull it sideways with the tube, it breaks the mask seal to your face and leaks which wakes me up.

Bonus besides not nearly dying every night, I no longer snore, which given I used to do a emulation of a chainsaw mixed with a train, is a bonus for those around me.

They let me take the monitoring stuff home and wear it overnight, and hand it back in the next day for the gory details in the review. Then a different company brought the machine to my house and set it up, so no hospital visits involved. But healthcare is different here I appreaciate.

You can self monitor with most smartwatches too if you feel like it but you can get the stats out the machine's sd card in raw format without having to ask the doctor nicely for the results ;)

2025-04-22

@da_667 I went through this recently, I got burnt out bad, stuck in a cycle of working hours to keep up but efficiency fell off, and getting up at 3am to write stuff around vulns etc.
My wife said she used to hear me stop breathing, and a few times she woke me up because she wasnt sure I was still alive, so she browbeat me into going and getting help.
During the sleep study at a few points I shutdown brain function and breathing etc for 20s or so, and the doc said one day, I just wont restart from one of these events if I continued. Sobering to hear.
I have the C-PAP machine, its working well , down to 1 apnea a night at worst, and usually 0, and apart from the whole feeling like a invalid dressed up like a elephant at night, its fine. Just makes me feel old and more vulnerable, or maybe that was the burnout. And working in a abusive environment that let me spiral like this, in fact pushed me into it. So loyal and hardworking you literally work yourself to death, stupid idiot (to self).
The mask is a pain at first but you get used to it, and you can ask for a hydrator if it dries out your airways, though I got one and then after a few days didnt notice any difference as my mouth dries up, not the nose (you have to breathe only through the nose for it to work for the others), so I canned it.

2025-03-15

@SecurityWriter Delivery anxiety, that when you dont have time to make sure the forklift will start and nothing is in the way of getting it out the barn large?
I often have that problem of late too it seems.

2024-08-13
2024-08-09
2024-07-14

I've had my printrbot simple metal for #3dprinting since 2015, and over the years modded things on it, & was chasing a quality issue this year and got a bit carried away.
Stretched & braced Z. 3 extruders (two bowden), filament sensors, Pei magnetic plate for the heated bed, and some general improving of things.
2nd pic is how my printer looked in 2015. Simple, but open & easy to hack on.

Waiting for materials (alloy stock, fans, wiring) to arrive to finish the outstanding stuff now :(

2015 Printrbot Simple Metal 3d printer undergoing mods on a workbench.image of the original simple metal my printer was delivered as
2024-06-27
2024-06-12

Well that feels like I achieved something, Flashed #OpenDTU open source data terminal unit onto a Olimex Esp32-POE running on POE, with a CMT2300A low power rf modem on a #blinkyparts breakout board to rubber duck antenna outside via a 5m coax extension, which is sat next to & talking low power RF to a Hoymiles HMS-1600 solar inverter with 2Kw of panels injecting back into the grid. Currently its miserable and overcast and only making a few hundred watts, but we're getting some data logged. Now to tidy it all up, 3d print some cases and integrate it to #homeassistant so that we can automate switching on loads with generation peaks etc. And then a Shelly Pro 3EM realtime meter monitor & another 2Kw of panels to put up, with a second hoymiles, facing more towards evening sun direction.

Little dashboard of data from the solar panels just put up.
2024-02-04
2023-12-10

Diy locksmithing today, this was to replace a lost key. Worked smooth after the usual deburring.
In the past Ive 3dp'd keys and duplicated them in metal but this was just a 1:1 clone.
Sharp cutters, squirt of cutting oil and getting the key blanks jigged up carefully. This is a handy little machine after fettling.

DIY cutting a key on a cheap keycutter.
2023-12-08

@SecurityWriter I have one of these (landrover 101fc), its basically a 1.5:1 scale Acty pickup handling wise. A pallet with some heavy castings well secured near the rear axle works wonders offroad with stability. Its like carrying a bag of cement in a sidecar, just one of the things you have to do ;)

Hoonigan, well I'm kind of torn, they blow a lot of money pointlessly and destroy things for youtube shock. But away from the cast of clowns, some of the people involved behind the scenes are artisans.

Landrover 101FC doing a stoppie during brake testing by the military during trials.
2023-12-01

Grinding away at my burnout, making some replacement jaws for my bench vice.

surface grinding some metal to make new very flat vice jaws.
2023-11-20

@grehackconf #greehack Great conf and great ctf. Circumstances meant I tackled it as a solo team and while I was never going to place high against teams of 8 wizards, I proved to myself I still have some magic left in the tank and enjoyed the challenges from outside my usual lane :)
Now hoping a bit of that post-grehack magic leaches into today's coffee consumption.

C8H1ON402 being infused with grehack11 edition magic. 
Or the plain version, coffee machine making a nice strong milk coffee in my new grehack mug.
2023-11-07

First wood heating furnace burn of 2023. Tweaked the dashboard with a gauge widget in home assistant. Next to add a pressure sensor for the water jacket to lm35dz compatible inputs. Then add the adc value, translate that to a pressure and expose it in the gui & save taking off access panels to see the physical gauge.

web page screenshot showing needle gauge displaying temperature of wood burning furnace.
2023-10-12

@fbz I have a Wurltizer Sillouhette, I bought it originally as a non worker at rock bottom junk price out of a secondhand shop with the intention of doing the same, but I have a bit of a mechanical habit too and I worked out how it worked and found the problems with some of the carousel mechanism that was causing it to not run (mostly bad limit switches and a cam had cracked and slipped causing the load arm not to home properly), and replaced some parts of the amp and made a replacement for the broken cam myself, now I can't bring myself to cut it apart.
Originally it had 4 panes to carry the jukebox title cards, but I've left out the center 2 to give me this window and kept them in a shed instead. I really like watching the mechanism load and flip 45's through the window created, its the most fantastic bit. Especially as I went through and fixed the lighting too, and I put a earth on and stopped the mild electrocutions caused by someone's previous repairs on the amp. Mostly the wrong volume pot, because the originals are expensive (like $50, for a variable resistor with two wafer layers...) but a odd pitch and layout. Needles and stuff are still available and I know audiophiles change them out for better sound.

It has a external input for the amp like a lot of commercial jukeboxes and remote controls via a wallbox feature so I might put a beaglebone on that wiring plug to simulate a wallbox and make it network aware for mp3's. There's a jukebox remote project on github.
It is awesome to have friends over, put it on freeplay and just watch it doing its thing and lighting the room up as people punch buttons into the selection computer.
I didn't have manuals for it at the time, its so simple and modular inside its not really needed and they were built to be serviced in the field so everything comes apart fairly easily, but I might have picked some service manuals up since I did it (its been a few years), I'll have a dig about.
There's a jukebox technical mailing list but it has hardly any traffic.
They're also fairly heavy because of the robust construction, and its too big to pass through the door of my (downstairs) office so I had to load it in through the window using a motorcycle lift as a lifting table. Once its in, its on castors and rolls out the way easy.

Would I recommend it, yes, and I'd try to base it round a older one if possible but in the transistor era unless you like the smell of dusty valves. Especially if you can get really lucky and find one that's not collection prices.
Maybe find one that is really really knackered inside so your not tempted to just restore it instead :)
I've attached some pics. I cant comment on alternative brands because I've only ever worked on mine but its probably a bit like arcade machines, made to service and well built to earn money.

wurlitzer lit uprear view of the amplifierfront view of the amp and psu area
2023-09-23
2023-09-11

Why is it, new kittens instinctively know where to go in my room to create maximum mayhem.
Meo and Mayo taking up the mantle of previous generations immediately making a beeline on entry for the shelves with the interesting wires on them. #catsofmastodon #retrogaming

two kittens doing what kittens do, causing mayhem amongst a variety of retro consoles and wires.
2023-09-11

I got gifted this cricut maker after their support disabled it because the lid catch was broke and sent the owner a newer model maker(3?).
I have a k40 laser for my own needs but hate all that proprietary nonsense and goal post moving cricut have done over the years so had a itch to play with virtualabs.github.io/cutcutgo/

False start from wondering why mplab wouldn't work with my programmer, then finding out my clone pickit3 was actually a pickit2, returning it, then getting a working clone of a pickit3.
Then got the firmware compiled and flashed onto the maker and it is cutting from the modified inkcut software from the cutcutgo project. many thanks to @virtualabs for his hard work!

Cricut Maker champagne edition midway through disassembly to get reflashed with cricricut firmware

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