@f4grx@chaos.social
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f4grx

@f4grx@chaos.social

Joined Apr 16, 2022

#nobot #noarchive #nobridge #nothreads #nometa

#Curiosity, #science, #technology, #hack, #8bits, #retrocomputing, #diy, also #environment, #humanrights #humor %utf8

General allergy to machine learning tools, blockch*ins, bullshit and pseudoscience in general
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Posts deleted after 1 year, nothing of that much value is kept here.

This profile is from a federated server and may be incomplete. Browse more on the original instance.

f4grx, to random French
@f4grx@chaos.social avatar

I machined a new bearing support for the ER11 spindle. The previous one had too much play, at least 0.1mm, which is just plain unusable. The bearing is a slight press fit in this one. I will measure runout (in the er11 cone) again.

Viss, to random
@Viss@mastodon.social avatar

this is what i think a memory corruption exploit would look like if the heap/stack were .. staples

video/mp4

f4grx,
@f4grx@chaos.social avatar

@Viss holy fuck I want to build this now

Nixie, to random
@Nixie@nixie.name avatar

Is there such a thing as Shutup10 but for windows 11?

f4grx,
@f4grx@chaos.social avatar

@Nixie > STM32Cube

Condolences. Who forced you?

f4grx,
@f4grx@chaos.social avatar

@Nixie it sucks ass, even pro users I know say so.

Try this: https://platformio.org/platformio-ide

f4grx,
@f4grx@chaos.social avatar

@Nixie @uint8_t ah, I did not understand that, sorry. There are so many smaller tools to do that! There is a standalone stlink programmer somewhere. Openocd is annoying.

I am using a blackmagic probe directly from gdb but I do not recommend that for simple use cases.

azonenberg, to random
@azonenberg@ioc.exchange avatar

Daddy daughter weekend fun in the lab.

Samples were an epoxy embedded rough-polished cross section of a rock we found in the backyard and an old Pentium 4 Willamette die that's seen better days.

She's still learning but I think is starting to get the basics of using the joystick. I don't trust her to focus quite yet, but with 5-20x LWD optics there's plenty of margin between properly focused and an objective crash so I'm not worried about her accidentally bumping the Z axis and breaking something before I can react.

A toddler sitting at a lab bench using a joystick-controlled microscope to look around an IC die

f4grx,
@f4grx@chaos.social avatar

@azonenberg 5yo likes to play with supertuxkart with a joystick, but she doesnt react fast enough yet to follow the road and has difficulty to maintain the throttle level while managing turns.

f4grx, to random
@f4grx@chaos.social avatar

I had forgotten how good Stefan Gotteswinter was at . I'm rewiewing many of his videos again and it's so educative I'm going to rewatch a lot!

Nixie, to random
@Nixie@nixie.name avatar

Ever seen an encoder and thought: "Damn, that looks pretty af!"

Dual encoder, I'll save it for later. Now I'm hunting for a detentless 24ppr encoder PEC12R-4017F-N0024

So far I have only found it on Digikey and I have either to pay 18€ or buy 50€ of stuff...

f4grx,
@f4grx@chaos.social avatar

@Nixie for small surface PCBs, I agree. Anything larger than 50x50 gets expensive fast

aral, to random
@aral@mastodon.ar.al avatar

Mastodon.social rolling out the red carpet for Threads is like an independent shop inviting a supermarket to set up next door.

But what’s done is done. And I’ve wasted enough words on this whole sorry affair over the last year.

So this is the last you’ll hear about it from me. When, eventually, you’re writing your “what went wrong?” articles, feel free to look up what I’d written on the issue back when.

f4grx,
@f4grx@chaos.social avatar

@GM7077 @aral what the fuck dude

18+ gsuberland, to random
@gsuberland@chaos.social avatar

take an empty glass jar (the kinda size you get pasta sauce in), clean it, let it sit in hot water.

one large red onion thinly sliced on a mandoline. one tablespoon of kosher salt, one tablespoon of sugar, 3-4 tablespoons of white vinegar (I used rice vinegar), about ten whole peppercorns.

boil a kettle. add all the stuff to the jar. top to the brim with boiling water. attach lid firmly. let it cool for an hour, then put it in the fridge overnight.

goes super good on salmon bagels.

18+ f4grx,
@f4grx@chaos.social avatar

@gsuberland will it work if my salt is not kosher? (seeing myself out)

18+ f4grx,
@f4grx@chaos.social avatar

@gsuberland ah ok. We just call it big salt. Lol

gigabecquerel, to random
@gigabecquerel@chaos.social avatar

I have poor self control

image/jpeg

f4grx,
@f4grx@chaos.social avatar

@gigabecquerel i really love the concrete slab base <3

f4grx,
@f4grx@chaos.social avatar

@Nixie @nblr @gigabecquerel ah it's a premade one? Look for manhole covers. First idea was that I would have to cast it myself.

Nixie, to random
@Nixie@nixie.name avatar

A coworker asked me if I could print him a Gandalf's pipe, and of course I said yes.

I'm going to try to print it in this orientation, just so it is hollow and allows him to blow confetti out of it.

If that doesn't work, I'll print it sideways (can't split it because it's an OBJ not an STL file)

f4grx,
@f4grx@chaos.social avatar

@Nixie thats not a lot of support material!

f4grx,
@f4grx@chaos.social avatar

@Nixie ah, yes, i did not think about internal supports!

f4grx, to random French
@f4grx@chaos.social avatar

So, I did some machining. This is a fixture.

f4grx,
@f4grx@chaos.social avatar

This fixture allowed me to polish a plastic optical fiber in a specific pattern, eg, to thin it to half its thickness. And I got this, a fiber light combiner/splitter. There is some cross talk since the fiber core is extremely large. Solutions are known to reduce this crosstalk. I need more fixtures for assembly, and a longer combining length, and solutions to better protect the fiber (nylon maybe), but this is promising.

Light combining action, showing only the right half of th fiber being illuminated.
Combining action, showing the left half of the fiber being illuminated
The coupler itself. Both branches are friction fit in the small tube.

Nixie, to random
@Nixie@nixie.name avatar

In the end I have bought this IP camera, to monitor the 3D printer while I'm on my walks.

f4grx,
@f4grx@chaos.social avatar

@Nixie i'm always wondering if these cameras communicate with chinese servers.

f4grx,
@f4grx@chaos.social avatar

@Nixie we so much need an openWRT for cams.

f4grx,
@f4grx@chaos.social avatar

@gsuberland @Nixie the test is easy. Put the plastic part in the microwave oven for 30 seconds, with a glass of water to absorb the surplus RF power. If the plastic part becomes hot, don't use it for anything RF. White PVC is usually fine, gray one not always. White ABS and PLA should be ok, black one could have carbon based pigment and that would be a problem.

Nixie, to random
@Nixie@nixie.name avatar

I'm looking up for a childrens full picture book (art drawing covering the complete pages) about a steam train operator that takes the train in the first pages and you see explanations of how tunnels are dug and other things, and when he gets out in the last pages he is completely covered in soot and meets his gf.

Anyone has a memory of a book like that?

f4grx,
@f4grx@chaos.social avatar

@Nixie so it's aguja or cambivia?

f4grx,
@f4grx@chaos.social avatar

@Nixie I am ridiculous at spanish, but still, cambivia sounded antique. Thanks.

f4grx,
@f4grx@chaos.social avatar

@Nixie holy fuck they did not hesitate. Yeah, a few old books I want too are unapproachable.

f4grx, to random French
@f4grx@chaos.social avatar

What the fuck is this "avatar world" crappy game my kid's friend has been showing to my kid?

Only external references to this game are based on tiktok,yandex, and youtube influencers.

Anyone has info on this? Not gonna let her play since she's too young to manage her own phone, buy I wanted to know how bad it really is.

Nixie, to random
@Nixie@nixie.name avatar

@f4grx got my copy!

A good deal appeared in Wallapop, and I took it (25€ shipped, pic is from actual purchased book, looks in perfect condition)

Fucking oof...I had not seen the Elon Musk quote.

Someone got a cool sticker I can put there?

f4grx,
@f4grx@chaos.social avatar

@Nixie :D

I'm struggling with the actual flu, I've been in bed all day, and wont go to work until monday. So that was fun reading your message as a little distraction :)

Nixie, to random
@Nixie@nixie.name avatar

WAW

Why don't we have museums like this in my area??????

FFS.

https://www.youtube.com/watch?v=ib2Wp2d_Zzs

f4grx,
@f4grx@chaos.social avatar

@Nixie I could look at this all day long.

Also: https://www.youtube.com/watch?v=ieQj2TJV7io

f4grx, to random French
@f4grx@chaos.social avatar

Omg what I have found? . It's not just a test. Oh wow. Oh wow. My life is fucked.

f4grx,
@f4grx@chaos.social avatar

@Nixie this has potential to eat a gigantic amount of time.

f4grx,
@f4grx@chaos.social avatar

@F4EGX_Nico @Nixie going to zzzzleeeeepprmgngngngnzzzz

f4grx,
@f4grx@chaos.social avatar

@F4EGX_Nico @Nixie mineclone 2 mobs are quite hard. I was also very addicted last week and saw it was bad for me. Also, I tested minetest game, which has no mobs, but this has cut all motivation. Most of the game is mining large volumes of underground with stone pickaxes, which is quite annoying tbh. iron is at Y<-128, which is slow.
I also know there is an easy /giveme command that cuts even more interest.

so I'm playing during RER commute but I'm back at my regular activities.

f4grx, to random French
@f4grx@chaos.social avatar

Today I received Plastic Assemblage Block (10)

f4grx, to random
@f4grx@chaos.social avatar

people are CRAZY

edit: some info about actual market prices: sealed boxes are insane!

https://www.bricklink.com/v2/catalog/catalogitem.page?S=7715-1#T=S&O={%22iconly%22:0}

RueNahcMohr, to random
@RueNahcMohr@infosec.exchange avatar

I assembled a new battery pack for my computers UPS, this is only meant to be temporary so I cheaped out on the fuses (about 10A ea, they use olfactory trip indication. 24V ~30Ah
I have to work out what real batteries I'm going to get ($300-$600) if a windfall doesn't happen to come along.

image/jpeg

f4grx,
@f4grx@chaos.social avatar

@RueNahcMohr i am starting to get interested in home UPS in cade something happens. My home consumes around 300-500W continously with peaks at 4000W for cooking. I think a home inverter is doable. Bonus ideas point to make that synchronized and able to inject watts in the mains circuit without disconnection.

f4grx, to random
@f4grx@chaos.social avatar

Wow. Did you know this? There exist power over fiber components that can provide 3v 180mA from 1.5W of 800nm infrared light coming through a standard multimode optical fiber.

These are very expensive, but also very cool!

https://www.farnell.com/datasheets/2785190.pdf

f4grx,
@f4grx@chaos.social avatar

@jaseg 😁

I dont really know what 1.5W of light looks like. My only reference is my head light, which has a 200 lumen CREE T6. I see online that a 10W CREE T6 generates 1000 lumen, so my 200lm headlight should use approximately 2W. Which is very bright and not a good idea to look at frontally.

All of that concentrated in one 50um fiber core looks like a lot of photons in a small place!

f4grx,
@f4grx@chaos.social avatar

@Nixie @jaseg get well soon!

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