#general-chat | adafruit | Page 187

tardy badger Sep 11, 2021, 5:14 PM

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Bread 2040 will launch soon. Whenever I get the panels and the stencil

quartz wren Sep 11, 2021, 5:51 PM

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Premature money is the root of all optimisation

delicate stream Sep 11, 2021, 5:54 PM

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lol

late fulcrum Sep 11, 2021, 5:59 PM

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While that would explain the Juiceroo, I'm unsure of its universal applicability

quartz wren Sep 11, 2021, 6:01 PM

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I'm unsure of my own cognizance right now

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If you have a brain made of gears, is it cognitive?

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Those from gear world are cog natives

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Sorry coffee hasn't hit yet brain short circuiting

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A gear person's head is the cognitives of a cog native.

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Okay I'm done.

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What if I just replace the motherboard out of a laptop I already have...

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And use the mobo that was in it as my lab server for DNS and whatnot on the intranet

late fulcrum Sep 11, 2021, 6:09 PM

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Hmm, I have a spare laptop mobo right here

quartz wren Sep 11, 2021, 6:09 PM

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What I mean is make the mobo like I was going to but use a case I already have instead of a bespoke printed one

late fulcrum Sep 11, 2021, 6:10 PM

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It seems like extra work to me, but I'm probably missing something.

delicate stream Sep 11, 2021, 6:14 PM

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I have a tube

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I wish you could make motherboards for modern processors

late fulcrum Sep 11, 2021, 6:16 PM

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I suppose you could, but it would be expensive in small quantities. Most modern processors take fine pitch multilayer boards.

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eyes Raptor Talos II mobo

tardy badger Sep 11, 2021, 6:26 PM

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Lol

quartz wren Sep 11, 2021, 6:28 PM

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late fulcrum It seems like extra work to me, but I'm probably missing something.

Keeb.

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If I reuse the case I don't have to build a keyboard.

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At some point I'm going to make a laptop mobo around a 386sx from an old Toshiba laptop

delicate stream Sep 11, 2021, 6:30 PM

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late fulcrum I suppose you could, but it would be expensive in small quantities. Most modern...

I don't think you can due to the sheer complexity... Aside from the pitch, there's just so much going on with modern boards. Plus the extreme design precision required for things like PCIe... And then yeah, cost on top of that

quartz wren Sep 11, 2021, 6:30 PM

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But that's about as small as I comfortably dare go

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In terms of pin pitch

delicate stream Sep 11, 2021, 6:30 PM

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386/486 is probably the lastest you could actually feasibily DIY a board for

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You already can't buy modern chipsets, so...

quartz wren Sep 11, 2021, 6:30 PM

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I feel like we've had this conversation at least twice...

delicate stream Sep 11, 2021, 6:31 PM

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At least, lol

quartz wren Sep 11, 2021, 6:31 PM

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I really wish this 386 was socketed...

delicate stream Sep 11, 2021, 6:32 PM

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Oof

quartz wren Sep 11, 2021, 6:32 PM

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But no, just SMD straight to the board

delicate stream Sep 11, 2021, 6:32 PM

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F

late fulcrum Sep 11, 2021, 6:32 PM

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I haven't tried to source modern chipsets, are they just not available to non-OEMs, or are you referring to the chip shortage in general?

quartz wren Sep 11, 2021, 6:32 PM

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There's a coprocessor socket for a 387 lolol

delicate stream Sep 11, 2021, 6:33 PM

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late fulcrum I haven't tried to source modern chipsets, are they just not available to non-OE...

Pretty sure you need to be an OEM to get them. Not sure if they're currently impacted by the shortages

quartz wren Sep 11, 2021, 6:33 PM

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At one point before I let the magic smoke out of the power board for the laptop mobo it's on I was going to make a coprocessor with a microcontroller that slotted into that socket

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But now I'll have to remake the whole thing lol

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Because it turns out when you hook up voltage backwards sometimes things go pop

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Luckily it was just the power systems that did that...

late fulcrum Sep 11, 2021, 6:34 PM

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I killed a very expensive board that way once

quartz wren Sep 11, 2021, 6:35 PM

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(none of the other chips even got mildly warm but several chips and diodes and things on power section were burning hot)

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So I'm parting the board out.

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It even came with a 4mb RAM cartridge I may be able to use

late fulcrum Sep 11, 2021, 6:37 PM

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RIP

quartz wren Sep 11, 2021, 6:44 PM

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That is a gorgeous board layout

dusty citrus Sep 11, 2021, 6:44 PM

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Appears that my coffee was made with MIPS!

quartz wren Sep 11, 2021, 6:45 PM

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triggered

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I made some chlorine gas by accident once

late fulcrum Sep 11, 2021, 6:46 PM

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I'm pleased that the MIPS ISA has been open sourced

delicate stream Sep 11, 2021, 6:46 PM

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quartz wren I made some chlorine gas by accident once

I have done this more than once >~>

quartz wren Sep 11, 2021, 6:46 PM

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Turns out when you accidentally spill water onto a mobo while it's running and the thing that happened to tip the water is a wave of salt...

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Well it makes chlorine gas and kills the computer

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Somehow things ended up in a rube goldberg style device that broke my computer, made a mess, and broke something else dear to me

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(just by the way stuff was layed out in combination with one silly thing I did)

subtle fable Sep 11, 2021, 6:50 PM

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I mean it shouldn’t make too much chlorine, it’s just a side effect of the salt helping the electrolysis along

delicate stream Sep 11, 2021, 6:50 PM

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I have a question

quartz wren Sep 11, 2021, 6:51 PM

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Yeah i was just being dramatic the real problem was the somewhat rare video card it fried

late fulcrum Sep 11, 2021, 6:51 PM

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The problem with the dead KIM-1 is that the 6530 chips are irreplaceable

subtle fable Sep 11, 2021, 6:51 PM

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I’ve made chlorine on a bigger scale before and that stuff is nasty, hurts your lungs a lot even in small amounts

quartz wren Sep 11, 2021, 6:51 PM

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Yeah I uh

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Accidentally left an electrolysis setup running in my room while I slept once

delicate stream Sep 11, 2021, 6:52 PM

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@subtle fable what's a 'Gopnik'?

quartz wren Sep 11, 2021, 6:52 PM

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Not thinking about the fact I used NaCl as the electrolyte

subtle fable Sep 11, 2021, 6:53 PM

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Slang for a worker in the soviet union, i’ve had this username for so long I don’t even know why i chose it

quartz wren Sep 11, 2021, 6:53 PM

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Woke up and was raspy, had a sore throat for like 3 days... It was rough

subtle fable Sep 11, 2021, 6:54 PM

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Like i’ve had this username for years, so don’t expect me to know the meaning behind it, lol

quartz wren Sep 11, 2021, 6:54 PM

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I'm just glad I'll have an actual fume hood in a space that isn't my bedroom soon.

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Oh I found a piece of metal that is perfect for a blast shield :D

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It's like, wavy on one axis so it would work great as a garage door style slider to be able to quickly drop in front of the fume hood

delicate stream Sep 11, 2021, 6:55 PM

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I need to rebuild my blast chamber

quartz wren Sep 11, 2021, 6:56 PM

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My blast chamber is a fire pit...

subtle fable Sep 11, 2021, 6:56 PM

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You guys have proper safety equipment?

quartz wren Sep 11, 2021, 6:56 PM

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Not yet

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Working on it

delicate stream Sep 11, 2021, 6:57 PM

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... some

quartz wren Sep 11, 2021, 6:57 PM

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Have to build most of it myself

delicate stream Sep 11, 2021, 6:57 PM

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Blast chamber was originally designed to be able to handle a stick of dynamite at most

subtle fable Sep 11, 2021, 6:57 PM

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I literally just make things in an open garage and in my bedroom and hope things don’t catch fire or go boom, maybe in the yard if things are pretty unsafe

quartz wren Sep 11, 2021, 6:57 PM

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Yeah the blast shield I'm talking about would be for things like lithium cells going pop

delicate stream Sep 11, 2021, 6:58 PM

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Most things I do aren't particularly dangerous, lol

quartz wren Sep 11, 2021, 6:58 PM

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subtle fable I literally just make things in an open garage and in my bedroom and hope things...

This is how I've operated for years

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But now I'm building a lab because I finally can

subtle fable Sep 11, 2021, 6:58 PM

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I work on a lot of projects, i made some blackpowder for some model rocket ejection charges by just grinding stuff up in my bedroom and mixing it on my desk, probably not the best idea

delicate stream Sep 11, 2021, 6:59 PM

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Yeah, should make that outside

subtle fable Sep 11, 2021, 7:00 PM

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The nitrate was pretty damp so the chances of it igniting were slim to none, you couldn’t set it off without a blow torch or magnesium, but it still would have been a better idea to do it outside

quartz wren Sep 11, 2021, 7:00 PM

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I once had a lithium cell I was disassembling in my bedroom flake off a piece of something and catch my shorts on fire.

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And this was when I was living in an apartment

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On the second floor...

subtle fable Sep 11, 2021, 7:00 PM

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Tell me they weren’t polymer shorts like nylon or polyester

quartz wren Sep 11, 2021, 7:01 PM

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They absolutely were

subtle fable Sep 11, 2021, 7:01 PM

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Oh no

quartz wren Sep 11, 2021, 7:01 PM

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Basketball shorts

subtle fable Sep 11, 2021, 7:01 PM

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That’s not good

quartz wren Sep 11, 2021, 7:01 PM

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Managed to put it out before it spread but it left a hole the size of a dime

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And singed my boxers

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Also I just realized why the past tense of sing isn't singed. It's because that's used for the past tense of singe

subtle fable Sep 11, 2021, 7:03 PM

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You should see my desk

late fulcrum Sep 11, 2021, 7:03 PM

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So, is it sang or sung?

quartz wren Sep 11, 2021, 7:03 PM

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Depends on context. I sung versus we sang

subtle fable Sep 11, 2021, 7:03 PM

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It’s covered in cuts, chemical residue, burns, and weird black stuff

quartz wren Sep 11, 2021, 7:03 PM

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You

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Sound like me

subtle fable Sep 11, 2021, 7:04 PM

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That’s not a good thing

quartz wren Sep 11, 2021, 7:04 PM

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Sure it is.

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I'm awesome!

subtle fable Sep 11, 2021, 7:05 PM

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My bed sheets are stained brown by copper chloride

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I spilt a cup of HCL acid and copper chloride on my bed

quartz wren Sep 11, 2021, 7:06 PM

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I don't even have bed sheets... They don't stay on through the night and I found I'm more willing to sleep without them than put them back on every morning

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I have cups of various solutions scattered around my bedroom

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I get it

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This desk is my outside desk, I would show more but there is some... More adult stuff I'm not sure I'm allowed to show here...

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At one point I was doing cobalt dissolution experiments in my room

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Turns out getting cobalt to dissolve is hard

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Had to pump electricity through it to coax it along

subtle fable Sep 11, 2021, 7:09 PM

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quartz wren This desk is my outside desk, I would show more but there is some... More adult ...

Fair enough

quartz wren Sep 11, 2021, 7:10 PM

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But yeah from the sound of it you're basically on the same kind of learning track as me, I commend it

subtle fable Sep 11, 2021, 7:11 PM

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Did you also build potato cannons at one point?

quartz wren Sep 11, 2021, 7:11 PM

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Nah but it is on the agenda

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Don't really have a place to use one

subtle fable Sep 11, 2021, 7:11 PM

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I designed some 3D printable shells for them, they got fins on them for stabilization

quartz wren Sep 11, 2021, 7:12 PM

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Noice!

late fulcrum Sep 11, 2021, 7:12 PM

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Potato cannon?

quartz wren Sep 11, 2021, 7:13 PM

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Put it this way most of my experimentation over the years has been in my bedroom and a fire pit and I'm just now getting to build myself a small dedicated lab. So I'm going all out. I'm going to make it capable of doing a closed loop life support system at positive pressure for long duration space mission simulations

subtle fable Sep 11, 2021, 7:13 PM

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The cannon i made these shells for is broken rn, i have to make another because my dumb self forgot to glue the rubber seal to the inside, so when i fired it at full capacity it just shot out the front instead of staying in the cannon

quartz wren Sep 11, 2021, 7:13 PM

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Among other things

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Uffff

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Gotta love forgetting simple checks...

subtle fable Sep 11, 2021, 7:14 PM

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Yep

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It did fire correctly a few times before i finally pumped it to 100 PSI and when i twisted the valve it shot out and hit a table

quartz wren Sep 11, 2021, 7:14 PM

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Question: how much you know about boolean logic?

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(my main area of focus, though I branch into just about every area)

subtle fable Sep 11, 2021, 7:15 PM

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Like in coding?

quartz wren Sep 11, 2021, 7:15 PM

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Hardware level

subtle fable Sep 11, 2021, 7:16 PM

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Oh, not much, i’m just getting into electronics which is why i joined

late fulcrum Sep 11, 2021, 7:16 PM

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Boolean logic?

quartz wren Sep 11, 2021, 7:17 PM

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Heh I made a byte of RAM on breadboards once

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Using transistors

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See if I can find a pic

late fulcrum Sep 11, 2021, 7:18 PM

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I made a 1-bit core memory once

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I also made this 4-byte core memory, but that was from a kit.

quartz wren Sep 11, 2021, 7:19 PM

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Oh nice, yeah core is something I also want to play with in my lab just for the cool factor

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https://i.imgur.com/KDaKa.jpg

Imgur

Bringing technology back to it's roots, a working model of 1 byte of ram.

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All made using 2n3904 transistors though any NPN should work

stoic mesa Sep 11, 2021, 7:20 PM

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late fulcrum Potato cannon?

oh yes!!

subtle fable Sep 11, 2021, 7:20 PM

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I know more about mechanical stuff and a little bit of coding, so i joined to learn about this kind of stuff because i do want to build some cooler projects

quartz wren Sep 11, 2021, 7:21 PM

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Then you're in the right place. Any questions up to and including design and implementation of a custom CPU architecture as far as digital circuits

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I'm your guy 😉

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And if I don't know something in that area, I will learn it to answer because I clearly needed to learn it anyway

late fulcrum Sep 11, 2021, 7:23 PM

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I made a good start with FPGA then got discouraged

delicate stream Sep 11, 2021, 7:24 PM

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I had painted my desktop... But it's fading, lol

subtle fable Sep 11, 2021, 7:24 PM

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Also these are the components of the potato gun i made

subtle fable Sep 11, 2021, 7:24 PM

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delicate stream I had painted my desktop... But it's fading, lol

I see those hex drawers

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I tried making them but for some reason the files just wouldn’t slice in my software so I couldn’t get the gcode file for my printer

quartz wren Sep 11, 2021, 7:25 PM

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late fulcrum I made a good start with FPGA then got discouraged

I started with minecraft's redstone system. FPGAs still discourage me.

subtle fable Sep 11, 2021, 7:25 PM

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Now i can understand redstone

quartz wren Sep 11, 2021, 7:26 PM

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Redstone is simple. If there's a torch on a block and the block gets a signal the torch goes out.

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It's an inverter

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With multiple inputs

delicate stream Sep 11, 2021, 7:26 PM

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subtle fable I see those hex drawers

Lol, yeah, little ones didn't work out so well, they don't stick together... Bigger ones are perfect

quartz wren Sep 11, 2021, 7:26 PM

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Which makes any block with a torch on it a NOR gate

late fulcrum Sep 11, 2021, 7:26 PM

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I was using IceStudio/IceStorm and got as far as generating a VGA signal. My aim was to build a clone of the Atari Music Visualizer, but I got confused with how to synchronize my counters and asked on (a different) Discord for help and got harsh discouragement.

quartz wren Sep 11, 2021, 7:27 PM

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From there all logic gates can be built

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I was trying to design an SoC game console with a custom CPU architecture

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Eventually I figured out if I find a chip that already implements the stuff I want for cheap I can do it with much less faffing about

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<3 Pico

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I was going to use Teensy for the console core but... Let's just say it is a great module but they're very sensitive and don't have all the right things I need. Pico is robust.

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And has PIO

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Without that I literally was going to be building a hard-set resolution timing driver using PLDs as the core

subtle fable Sep 11, 2021, 7:31 PM

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@delicate stream Btw what printers do you have?

quartz wren Sep 11, 2021, 7:32 PM

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Which would trigger interrupt code on the teensy and then have it send out software controlled pixel values... Turns out that system can be implemented with dynamic resolution capabilities using Pico's PIO without any external hardware

delicate stream Sep 11, 2021, 7:32 PM

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subtle fable <@!381566293368897537> Btw what printers do you have?

MonoPrice Select Mini V2, MonoPrice MP10, Ender 3 Pro, Ender 3 V2, and a PowerSpec Ultra 2 [or something like that, forget the model name, it's an old dual-extruder I need to work on]

quartz wren Sep 11, 2021, 7:32 PM

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Heh want to see my ender 3 that I... Upgraded?

subtle fable Sep 11, 2021, 7:33 PM

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Unlike 90% of people i started out with a printer other than an ender 3, kinda regret it but it worked fine

delicate stream Sep 11, 2021, 7:33 PM

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deer

subtle fable Sep 11, 2021, 7:34 PM

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The only thing I didn’t like about my first printer was unclogging the nozzle, it was basically impossible to put the print head back together

quartz wren Sep 11, 2021, 7:34 PM

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Normal size ender 3 on the left for scale

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I started with an anet a6

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Acrylic frame

delicate stream Sep 11, 2021, 7:34 PM

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Taalll boi

subtle fable Sep 11, 2021, 7:34 PM

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I started with a qidi X-One2

delicate stream Sep 11, 2021, 7:35 PM

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I wonder how tall of a print you can do at one time

subtle fable Sep 11, 2021, 7:35 PM

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Oh

quartz wren Sep 11, 2021, 7:35 PM

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Yeah I took some of the 2040 and one of the thread rods from a tronxy x5s for this tallboi

subtle fable Sep 11, 2021, 7:36 PM

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Now i have a snapmaker A350 which is super slow but I won’t complain since it has a big area

delicate stream Sep 11, 2021, 7:36 PM

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I wonder if I could make a 2m max build height Ender

quartz wren Sep 11, 2021, 7:36 PM

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Maybe... The single thread rod thing might pose a challenge at higher points.

subtle fable Sep 11, 2021, 7:36 PM

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2 meters?

delicate stream Sep 11, 2021, 7:37 PM

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Yiss

quartz wren Sep 11, 2021, 7:37 PM

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Or I guess more at midpoints because that's where most flex in the rails is

subtle fable Sep 11, 2021, 7:37 PM

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That’s ludicrous

delicate stream Sep 11, 2021, 7:37 PM

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I know XD

quartz wren Sep 11, 2021, 7:37 PM

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I mean

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I had a friend at community College who was working on a 1.5m x 1.5m x 1.5m build space printer that was designed to operate up to 400mm/s

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Full steel reinforced frame it was legit

delicate stream Sep 11, 2021, 7:38 PM

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Noice

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Giant frame printers that are designed to be giant frame printers aren't silly... Making a printer designed for a 250mm height 2m tall? That's silly XD

quartz wren Sep 11, 2021, 7:39 PM

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I think he wanted standard print speed at 350mm/s with a margin up to 400

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If I remember correctly

delicate stream Sep 11, 2021, 7:40 PM

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Still long prints at that size, lol

quartz wren Sep 11, 2021, 7:40 PM

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Not with a moarstruder

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Just scale it allllll up

delicate stream Sep 11, 2021, 7:41 PM

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lol

subtle fable Sep 11, 2021, 7:41 PM

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My printer is like 320 x 350 x330, so I don’t see myself wanting a super tall or large printer any time soon

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Plus i can swap the head out for a cnc machine or laser, and with the cnc machine i can etch pcb

quartz wren Sep 11, 2021, 7:42 PM

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I was converting the tronxy into a prusa style printer because I like the kinematic and it is material efficient but then I thought "what if I just had a wide printer as tall as the ender and an ender as tall as this was going to be"

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So that's the plan when I get my lab set up

delicate stream Sep 11, 2021, 7:43 PM

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My MP10 does 300x300x400

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I'd love to be able to print, like, swords in one piece

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Kinda either a really tall one or one of those new belt infinity printers

quartz wren Sep 11, 2021, 7:43 PM

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I bet I could print a whole ukulele now on this ender...

subtle fable Sep 11, 2021, 7:44 PM

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Why a ukelele

quartz wren Sep 11, 2021, 7:44 PM

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Might need to be 85%

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Because I like ukuleles

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And that was one of the first large prints I attempted and it failed miserably after about 18 hours of print time.

subtle fable Sep 11, 2021, 7:44 PM

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Ooof

delicate stream Sep 11, 2021, 7:45 PM

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quartz wren And that was one of the first large prints I attempted and it failed miserably a...

This is literally the worst thing ever

subtle fable Sep 11, 2021, 7:45 PM

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I hate when that happens

quartz wren Sep 11, 2021, 7:45 PM

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Yeah it was mostly done and then it fell over...

delicate stream Sep 11, 2021, 7:45 PM

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One time I had a 38 hour print fail at the 37 hour 50 minute mark

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1.8KG wasted

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I punched a wall

quartz wren Sep 11, 2021, 7:46 PM

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Rough

delicate stream Sep 11, 2021, 7:46 PM

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grumbles remembering TAZ 6 being dumb

quartz wren Sep 11, 2021, 7:46 PM

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I'm very impressed with ender 3

delicate stream Sep 11, 2021, 7:47 PM

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I love my V2

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Pro needs work

quartz wren Sep 11, 2021, 7:47 PM

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I bought 3 of them solely for the fact it was the best price to build volume ratio at the time I was in the market for a new one (anet a6 was on last legs) because they were on sale

delicate stream Sep 11, 2021, 7:47 PM

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bbl, gotta do things

subtle fable Sep 11, 2021, 7:47 PM

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The A350 has half the print speed of other printers so a 10 hour project on an ender would take like 20, so whenever a project is almost done and fails i just want to give up

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And maybe cry

quartz wren Sep 11, 2021, 7:48 PM

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I can push ender 3 to ~100mm/s for quick prototype quality

subtle fable Sep 11, 2021, 7:49 PM

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Yeah, I can’t do that well with mine, for prototypes maybe but not for a final product, if i want to make a final product i have to slow it down to like 20-30mm per second for like PLA

quartz wren Sep 11, 2021, 7:49 PM

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Ufff

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Yeah I can hit 80 and still have it look good

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But 40-50 just makes it pristine

subtle fable Sep 11, 2021, 7:50 PM

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I knew the printer would be slow but i bought it anyways because it came with a pretty decent laser and a cnc machine head

quartz wren Sep 11, 2021, 7:50 PM

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Can you update the firmware to allow faster movement during print operation? or is it a hardware limitation?

subtle fable Sep 11, 2021, 7:51 PM

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I don’t know actually, i think you might be able to update the firmware

quartz wren Sep 11, 2021, 7:51 PM

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If you can you could probably set a higher maximum and just soft limit in the laser and CNC modes

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I once had my z motion on my printer at like 40mm/s on a printer for initial homing speed, then to a slow precision homing. Was really funny to watch and I always had a fear it would just plow through the limit switch and keep on going but it always stopped quickly enough

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Might be why my a6 was dying...

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(from overdriving z speed)

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(do not recommend)

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At one point I had that thing set up with automatic level compensation using an arm on a servo with a switch and just had no leveling knobs

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Worked amazing but uh... Yeah the arm broke and I couldnt re print it because the arm broke... And I forgot to print a spare... So I had to get more printers anyway and it wasn't as hard to do the leveling on the new ones so I never got around to setting it back up

subtle fable Sep 11, 2021, 7:58 PM

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The thing is they went with a different design for the arms, so idk if it is actually a hardware limitation or a software limitation

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It’s not like a normal printer

quartz wren Sep 11, 2021, 7:58 PM

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Does it use like an auto swapping head?

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Or is it spindle-style?

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(rotate something to present each head to the surface)

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Actually I can glean a lot from a pic, if you got one

subtle fable Sep 11, 2021, 8:00 PM

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Let me get one

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quartz wren Sep 11, 2021, 8:02 PM

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Oh it's using an integrated linear rail... How freely does the rail move on its own because it may be using backforce for stabilizing the cutting on CNC

subtle fable Sep 11, 2021, 8:02 PM

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They’re pretty stiff when you move them on your own

quartz wren Sep 11, 2021, 8:02 PM

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Yeah may be a hard limit then to make the CNC more smooth

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Probably prints pretty good quality though huh?

subtle fable Sep 11, 2021, 8:03 PM

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When i slow it down and dial in the settings yeah it does

quartz wren Sep 11, 2021, 8:04 PM

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Yeah with damping on the rails it makes smoother prints /cuts at low speed but at higher speed it really stresses the motors

subtle fable Sep 11, 2021, 8:04 PM

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Like first time i went into tpu i just shut retraction off and turned up the heat without changing much else in terms of settings and it printed well with minor stringing, and i was just using my PLA settings with minor changes

quartz wren Sep 11, 2021, 8:06 PM

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Yeah I got some filament I can't even find now that was called "flexible PLA" and I guess they don't cure it as long or something anyway point is that stuff is very strong...

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And I thought it would not work in a bowden system because I was even having trouble using it on a direct drive

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But it worked much better on bowden just had to slow it to 40mm/s

subtle fable Sep 11, 2021, 8:07 PM

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Depending on brand PLA is either horribly brittle and weak or super strong in my experience, the strength varies wildly for me

quartz wren Sep 11, 2021, 8:08 PM

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This stuff was intentionally very soft and when printed I had to put in all my strength to get it to tear even a little

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But not like stretchy soft

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Still kind of hard but flexible

subtle fable Sep 11, 2021, 8:08 PM

#

I should get some of that then

#

I have a few projects that could use that

quartz wren Sep 11, 2021, 8:09 PM

#

I have no idea where to find it again, ended up using the last of it to print a mouse pad

#

Because for some reason half my laser mice work on a plastic shiny somewhat warbly table and the other half just... Freak out

subtle fable Sep 11, 2021, 8:10 PM

#

When you specify laser mice it makes me think you still use trackball ones too

quartz wren Sep 11, 2021, 8:11 PM

#

I mean I have some but I try to use them as little as possible

#

And I have a laser PS/2 mouse for that end.

#

In case I want to play with older systems without that frustration

subtle fable Sep 11, 2021, 8:12 PM

#

Ahh

quartz wren Sep 11, 2021, 8:12 PM

#

Also when I want more USB on a system that has the ports for PS/2

#

May as well open the ports if I can

#

(note this sentence does not apply to firewalls)

subtle fable Sep 11, 2021, 8:15 PM

#

I really need to clean off my work desk and build plate, the buildplate is caked in glue and has tape on it

quartz wren Sep 11, 2021, 8:15 PM

#

Nice!

#

A handheld!

#

Your workspace is like... Immaculate compared to mine what are you talking about lolol

#

Speaking of which... I need to clean up my work space

#

But I want to just wait until the lab is built and I can start moving things out of my room

#

So I'm not doing the work twice

#

Right now I'm waiting for my brother to finish the last 5% of the roof that I asked if I could finish and his response is he has a particular way he wants to do it... So I have to wait for him to be ready to finish a 30 minute job so I can start paneling...

subtle fable Sep 11, 2021, 8:19 PM

#

You should see my other desk if you think thats clean, and the parts for the handheld get here tuesday, I can’t wait to start working on it because it’s the first project like this i’ve done

#

Planning on running some gameboy games on it

quartz wren Sep 11, 2021, 8:20 PM

#

Want to see a prototype handheld I was working on using pieces I had laying around and a custom printed case?

subtle fable Sep 11, 2021, 8:20 PM

#

Sure, i’d love to

quartz wren Sep 11, 2021, 8:20 PM

#

Never finished it but it looks pretty cool, the project evolved before it could do anything haha

#

Just a sec finding the pics

#

https://i.imgur.com/kszMrWR.jpg
https://i.imgur.com/zInZj69.jpg
https://i.imgur.com/uBy5brU.jpg
https://i.imgur.com/dYL1Mwe.jpg?1

Imgur

#

Only had the screen panel designed so far

#

Only functional TFT I had at the time, now I have a bigger one so I'm redesigning it

subtle fable Sep 11, 2021, 8:26 PM

#

Oh nice, so it folds?

quartz wren Sep 11, 2021, 8:26 PM

#

Yep

#

Took a lot of inspiration from GBA SP

subtle fable Sep 11, 2021, 8:26 PM

#

Ahh, i used to have one of those

quartz wren Sep 11, 2021, 8:27 PM

#

I have one currently disassembled hehe

#

I'm terrible

#

It's a SpongeBob SquarePants one too...

subtle fable Sep 11, 2021, 8:28 PM

#

I once tore apart a gamecube when i was younger because i thought it had a proper laser diode in it i could use to make a laser, long story short i had no idea what i was doing, how dangerous laser diodes are, or that the gamecube doesn’t have the laser diode i needed

#

But the main reason i’m making the handheld is because i want to play links awakening on something other than a GBC or a busted 3DS

quartz wren Sep 11, 2021, 8:29 PM

#

I mean it would work for tiny stuff... Speaking of which I have a bunch of tiny stepper motors with threaded rods like in a CD/DVD drive but much finer pitch...

#

I should make a tiny laser engraver...

subtle fable Sep 11, 2021, 8:29 PM

#

If you do be very careful

#

Laser diodes are no joke

quartz wren Sep 11, 2021, 8:30 PM

#

Of course my eyes are one of my best tools.

#

No lasers without laser goggles.

subtle fable Sep 11, 2021, 8:30 PM

#

I have one of those sketchy chinese laser pointers with like 100 mw of power

quartz wren Sep 11, 2021, 8:30 PM

#

A little burn on my skin? Meh. Losing vision? That's catastrophic.

subtle fable Sep 11, 2021, 8:31 PM

#

I haven’t touched the thing in ages because it scares me

quartz wren Sep 11, 2021, 8:31 PM

#

Oh also the whole thing would be enclosed in laser shielding too

#

Not hard to do at that scale

subtle fable Sep 11, 2021, 8:32 PM

#

For my snapmaker laser i have laser goggles and an enclosure since just looking at the dot can blind you

quartz wren Sep 11, 2021, 8:32 PM

#

Yeah fair point

#

Better safe than blind.

#

I actually have a bunch of small to medium laser diodes just kicking around my scrap and no clue if any work...

subtle fable Sep 11, 2021, 8:33 PM

#

Right now it’s off of the printer for easy access while I’m printing

quartz wren Sep 11, 2021, 8:33 PM

#

Because too scared to try and implement them in anything

subtle fable Sep 11, 2021, 8:33 PM

#

My room is a complete mess

#

And you should be

#

Laser diodes are scary

quartz wren Sep 11, 2021, 8:34 PM

#

Yep so I won't play with them until I have proper PPE and enclosures.

#

But I will play with them

#

Because I have to for one of the projects I have in mind

subtle fable Sep 11, 2021, 8:34 PM

#

#

Big boy laser

quartz wren Sep 11, 2021, 8:35 PM

#

Shiny

#

😉

#

Yeah I'm not going anywhere near that beefy, just need to be able to turn kapton into graphene foam.

subtle fable Sep 11, 2021, 8:36 PM

#

Ah

#

I have a sheet of acrylic around here somewhere

quartz wren Sep 11, 2021, 8:36 PM

#

For in-house supercap research

#

I want to design a super capacitor someone can make with a few home shop tools and release the design publicly.

#

But that will take a lot of research and testing

subtle fable Sep 11, 2021, 8:37 PM

#

Also this is what the laser looks like when i turn the lights out

quartz wren Sep 11, 2021, 8:37 PM

#

Geez that is bright

subtle fable Sep 11, 2021, 8:37 PM

#

Yeah

quartz wren Sep 11, 2021, 8:38 PM

#

Hurts just to look at the pic haha

subtle fable Sep 11, 2021, 8:39 PM

#

It’s fun to engrave acrylic

quartz wren Sep 11, 2021, 8:39 PM

#

Ooh pretty

subtle fable Sep 11, 2021, 8:40 PM

#

The one thing I haven’t used much is the cnc

#

When i booted it up I didn’t calibrate it properly and screwed up the wasteboard

quartz wren Sep 11, 2021, 8:41 PM

#

Would you say that you

#

Layed waste to it

#

hides

subtle fable Sep 11, 2021, 8:42 PM

#

Not really, there's just a small outline of a cat drilled into it

quartz wren Sep 11, 2021, 8:42 PM

#

Hahaha

#

At least it isn't completely destroyed

#

Just fill it with bondo it'll be fine

subtle fable Sep 11, 2021, 8:43 PM

#

it won't hurt anything as is

#

i think

quartz wren Sep 11, 2021, 8:43 PM

#

I just meant if it bothers you

subtle fable Sep 11, 2021, 8:44 PM

#

Oh

quartz wren Sep 11, 2021, 8:47 PM

#

To more coffee or to not more coffee

#

more coffees

#

I actually kind of like having this travel size coffee maker as my primary one

#

Makes me aware of just how much I'm drinking

#

I keep reading "Allen Tech" on this ptfe tube bag and reading it as "Alien Tech"

#

Gets my hopes up that I got an extraterrestrial visitation I don't remember and then I get sad because if we aren't alone in the universe then the only explanation is the aliens want nothing to do with us.

#

(and are actively hiding)

#

Then the Lovecraftian thought of "maybe it isn't us they're hiding from" crosses my mind...

#

Wonder if that power converter shipped yet...

#

checks email

#

Ayyyy

#

My order has shipped

#

Expected in 3 days

#

😄

#

Though it's going NV -> WA and is already in transit so could be 2

#

I've gone WA->FL in just over 2 before as a passenger but laws were broken

#

(on a road trip)

tardy badger Sep 11, 2021, 11:49 PM

#

I’ve done GA —> WY in 2 days lol

#

I drove.. 16hrs the first day, 13hrs the second

#

ATL—>Lincoln, NE; Lincoln, NE —> Pinedale, WY

quartz wren Sep 12, 2021, 12:10 AM

#

Ahahaha someone found a pepe version of me

#

https://media.discordapp.net/attachments/697844444929720380/886395111892725820/image0.jpg

tardy badger Sep 12, 2021, 12:12 AM

#

Yes, breathe in the dangerous fumes! Let it fuel your obsession! evil laugh

quartz wren Sep 12, 2021, 12:13 AM

#

I mean it's also meant as a euphemism for being a stoner I think... As far as the intentions of the person who sent it to me

tardy badger Sep 12, 2021, 12:21 AM

#

Probably

real falcon Sep 12, 2021, 12:22 AM

#

https://tenor.com/view/happy-woah-powdered-face-gif-8653818

Tenor

tardy badger Sep 12, 2021, 12:26 AM

#

Me soldering

#

https://tenor.com/view/chappelles-show-dave-chappelle-chappelles-tyrone-tyrone-biggums-gif-4958017

Tenor

Dave Chappelle Crack Addict

▶ Play video

#

Just kidding, lol. Always use proper PPE and fume extraction equipment when soldering

quartz wren Sep 12, 2021, 12:32 AM

#

So you can extract and concentrate the fumes for inhalation right?

#

Sorry I couldn't help it...

tardy badger Sep 12, 2021, 12:35 AM

#

😆

honest jolt Sep 12, 2021, 1:14 AM

#

Lol

#

#

Just 1 mm off DX

quartz wren Sep 12, 2021, 1:27 AM

#

uff

honest jolt Sep 12, 2021, 1:45 AM

#

The double spacers hurt my soul

delicate stream Sep 12, 2021, 1:46 AM

#

Improv life, yo

honest jolt Sep 12, 2021, 1:46 AM

#

Lol

#

#

I can feel myself dying

#

But at least it won't tip over everytime I accidentally touch the hat

delicate stream Sep 12, 2021, 1:52 AM

#

One of my ItsyBitsy RP2040 bags is air-tight :O

#

Actually like 4 of 10 XD

honest jolt Sep 12, 2021, 1:57 AM

#

I find it cool how well they can suck out most of the air in a bag

#

For whatever reason 😂

delicate stream Sep 12, 2021, 1:58 AM

#

Lol. I think it's less that they suck the air out as that they keep it flat/squeeze/pull it

honest jolt Sep 12, 2021, 1:58 AM

#

Idk lol

delicate stream Sep 12, 2021, 1:58 AM

#

You should ask on Ask an Engineer XD

honest jolt Sep 12, 2021, 2:00 AM

#

Those spacers in the photos I showed were just bought from Amazon and the box of spacers was in an airtight bag so it took me 5 minutes to get it out without ripping the bag lol (cause it's recloseable/zip-loc style and we might reuse it)

#

And then each spacer group (like 6mm, 10mm, etc.) was in its own plastic baggy as well 😂

delicate stream Sep 12, 2021, 2:18 AM

#

Lol, they're trying to single handedly kill the planet with their packaging

late fulcrum Sep 12, 2021, 2:25 AM

#

They also shred most of their returns (and lie about it)

delicate stream Sep 12, 2021, 2:27 AM

#

Or otherwise destroy it, if you're talking about Amazon, yeah...

wooden schooner Sep 12, 2021, 2:29 AM

#

late fulcrum They also shred most of their returns (and lie about it)

do you have a link to them saying the lie?

#

also, I was under the impression that the vendors do most of the packaging and Amazon just gives them the outer boxes and envelopes? So granular bagging of parts might be something the vendor did on their own

delicate stream Sep 12, 2021, 2:32 AM

#

Some things get liquidated in pallets

delicate stream Sep 12, 2021, 2:33 AM

#

wooden schooner also, I was under the impression that the vendors do most of the packaging and A...

Vendors typically send product to Amazon, which stores it in warehouses, and orders go out from there

wooden schooner Sep 12, 2021, 2:33 AM

#

so then the vendor does the packing, right?

delicate stream Sep 12, 2021, 2:34 AM

#

No, Amazon does it. Vendor sends pallets/truckloads to Amazon, Amazon packages things to ship to customers

wooden schooner Sep 12, 2021, 2:34 AM

#

oh

delicate stream Sep 12, 2021, 2:34 AM

#

I think they have a separate marketplace where small vendors can ship directly? Not sure

wooden schooner Sep 12, 2021, 2:36 AM

#

I once made an amazon return and they said "don't bother mailing the item back, we'll just refund you"

#

I think it was an Amazon Basics HDMI cable or something like that

delicate stream Sep 12, 2021, 2:37 AM

#

Yeah, they've been doing that more often for smaller items -- it just isn't worth it for them a lot of the time

wooden schooner Sep 12, 2021, 2:37 AM

#

amazon kind of seems like it's too big

delicate stream Sep 12, 2021, 2:37 AM

#

This has been said by others as well...

wooden schooner Sep 12, 2021, 2:38 AM

#

(I was intentionally understating the matter by an order of magnitude)

delicate stream Sep 12, 2021, 2:41 AM

#

I honestly don't know how to address the idea of a company being too big, because the problem is that if we like, cut down Amazon into chunks, we'd probably end up losing a lot of the benefits of its size... Not sure Prime and other things would be sustainable for significantly other companies

wooden schooner Sep 12, 2021, 2:43 AM

#

yes - "If you regulate us, our prices will go up." Hence things like state governments caving to Uber and Lyft on issues of misclassifying their employees as contractors

late fulcrum Sep 12, 2021, 2:44 AM

#

Wal*Mart beats Prime anyway with free 2-day shipping

wooden schooner Sep 12, 2021, 2:45 AM

#

Uber: "If you classify our drivers as employees, we'll leave the state"

<uber-backed CA ballot prop passes>

Uber spokesperson: "This judge is disregarding the overwhelming will of The People"

Uh-huh. Thanks Uber spokesperson

late fulcrum Sep 12, 2021, 2:45 AM

#

I don't much care if amazon's prices go up, since there are better prices elsewhere (and I feel better shopping elsewhere anyway)

wooden schooner Sep 12, 2021, 2:46 AM

#

yeah. I have a certain cushion, such that if I find a vendor where my product costs up to $X more than it costs on amazon, I buy from the non-amazon vendor

#

I'm willing to pay some money for the public good of not buying from amazon

delicate stream Sep 12, 2021, 2:47 AM

#

late fulcrum Wal*Mart beats Prime anyway with free 2-day shipping

Wait, WalMart does free 2-day shipping?!

late fulcrum Sep 12, 2021, 2:48 AM

#

When I quit amazon many years ago, I made a bet with myself that I could find other deals elsewhere. Over all that time, and hundreds (if not thousands) of purchases, I've failed to find a better deal elsewhere a grand total of two times.

wooden schooner Sep 12, 2021, 2:48 AM

#

walmart is not great either...

late fulcrum Sep 12, 2021, 2:48 AM

#

Wal*Mart is no prize, but I'll take them over amazon any day of the week.

wooden schooner Sep 12, 2021, 2:49 AM

#

do you have places you commonly shop or is it different every time

#

also, why do you stylize it as Wal*Mart

late fulcrum Sep 12, 2021, 2:56 AM

#

There are several places I do a lot of repeat shopping. Aside from the obvious (AdaFruit, DigiKey, Mouser, Pololu, etc.), there are others I frequent like Zoro Tools, Barnes & Noble, Allspectrum, Bolt Depot, McFeely's, RTL Fasteners, PrintedSolid, Joanne, SuperBrightLEDs, 1000bulbs, Ikea, HobbyKing, etc., as well as a bewildering list of surplus outfits, niche sellers, and local vendors.

real falcon Sep 12, 2021, 3:09 AM

#

hard for me to shop at walmart

#

not only things is messy, but people are too

#

i live at large city, its just not excusable

delicate stream Sep 12, 2021, 3:12 AM

#

I only go to Walmart on rare occasions... usually to get distilled water on the way home from somewhere

real falcon Sep 12, 2021, 3:13 AM

#

i use costco for distilled food, as well as rest of food

delicate stream Sep 12, 2021, 3:13 AM

#

I don't think Costco is around here

real falcon Sep 12, 2021, 3:14 AM

#

im not happy that walmart is only source of zero carbs tortellas.

#

maybe ill finally go to walmart after years for that

#

got winco? in one of states in name?

late fulcrum Sep 12, 2021, 3:19 AM

#

I've been buying the Mission brand low carb whole wheat tortillas. They're tasty and available from several grocers. I think they have 6 grams of carbs per tortilla, which is fine for me, but may not be for you.

delicate stream Sep 12, 2021, 3:19 AM

#

Mission is everywhere

#

Automatic purchase for taco night

#

But we get the regular ones

real falcon Sep 12, 2021, 3:22 AM

#

its not sadly. i try keep under 10-15 carbs

#

im at 8 now, so my dinenr will have to be nearly zero carb

delicate stream Sep 12, 2021, 3:24 AM

#

I just focus on quantity of food more than anything right now

#

And exercise

#

WALK WALK WALK WALK

late fulcrum Sep 12, 2021, 3:24 AM

#

I aim for about 60g of carbs per day and yes walking is good.

tardy badger Sep 12, 2021, 3:24 AM

#

wow nice

#

my diet and exercise are not as consistent as i would hope they would be

delicate stream Sep 12, 2021, 3:25 AM

#

I honestly have no idea what my carb intake is

tardy badger Sep 12, 2021, 3:25 AM

#

I did make chili this evening

#

but I also bought a giant can of nacho cheese from walmart

delicate stream Sep 12, 2021, 3:25 AM

#

looks at granola bar I can promise my carb intake is 18g daily or more

tardy badger Sep 12, 2021, 3:25 AM

#

I eat a lot of cheese

delicate stream Sep 12, 2021, 3:26 AM

#

Mmm cheese

tardy badger Sep 12, 2021, 3:26 AM

#

it powers me through my long days of coding

#

and also my random weekend night coding sesh to make an arduino library for an ADC

#

😛

#

https://github.com/skerr92/ads7138-arduino/tree/main

GitHub

GitHub - skerr92/ads7138-arduino: Arduino Library for the ADS7138 A...

Arduino Library for the ADS7138 A2D converter. Contribute to skerr92/ads7138-arduino development by creating an account on GitHub.

delicate stream Sep 12, 2021, 3:27 AM

#

Wellsley Farms Chewy Chocolate Chip Granola Bars have been a frequent breakfast as of late

#

That or Entenmann's mini crumb cakes...

tardy badger Sep 12, 2021, 3:29 AM

#

i do eat many granola bars too... with cheese sticks

delicate stream Sep 12, 2021, 3:29 AM

#

lol

tardy badger Sep 12, 2021, 3:31 AM

#

i'm also remembering I have ice cream in the freezer lol

delicate stream Sep 12, 2021, 3:31 AM

#

XD

#

I ran out

#

Ohhhhh, if I just set up a display it'll show REPL, cool, I thought I had to do something special XD

#

Any suggestions how to light up a SHARP memory display? Was thinking about just having a dim wide-angle LED pointed kinda down across it

wooden schooner Sep 12, 2021, 3:33 AM

#

oh wow, we have multiple extremely-low-carbers

#

I'm on not very disciplined keto. When I'm good I do 25g/day, but lately I'm not good

delicate stream Sep 12, 2021, 3:34 AM

#

I'm pretty sure I'm nowhere near low carbs XD

crystal ore Sep 12, 2021, 3:38 AM

#

I'm more or less on a high-protein, low-calorie diet, which keeps me away from a lot of classic carb-heavy foods indirectly. Sigh... I miss bread... 😅

delicate stream Sep 12, 2021, 3:38 AM

#

Mini crumb cake is 31g XD

#

Kraft Mac'n'cheese is 50g... I'm gonna guess I'm 50g+ daily then

wooden schooner Sep 12, 2021, 3:39 AM

#

most people in the US are hundreds I think

delicate stream Sep 12, 2021, 3:39 AM

#

Calories and fats are a focus

wooden schooner Sep 12, 2021, 3:40 AM

#

I wish weight loss/maintenance were easier

delicate stream Sep 12, 2021, 3:41 AM

#

I was just eating too much... Sharply cut back my quantities, especially snacks (went from 1-2 snacks daily to one every other day or so, and 1/6th as much snack food) and skyrocketed my exercise, pounds fell failure quickly

delicate stream Sep 12, 2021, 3:41 AM

#

wooden schooner I wish weight loss/maintenance were easier

Yeah... I'm walking every single day and it can be exhausting

crystal ore Sep 12, 2021, 3:42 AM

#

Walking just takes so much time to make any impact...

wooden schooner Sep 12, 2021, 3:42 AM

#

I love certain kinds of exercise... and had the fortunate idea to buy a barbell for the home at the beginning of covid before they were all gone

delicate stream Sep 12, 2021, 3:42 AM

#

crystal ore Walking just takes so much *time* to make any impact...

It is... Limited... I do about an hour a day. I can't really do running because of my knees and hips DX

wooden schooner Sep 12, 2021, 3:43 AM

#

I have found that three things actually affect my weight: 1) sleep; 2) stress; 3) whether I eat dinner or skip dinner

#

the doc tells me to exercise more and I'm like dude, I've tried that one. I like exercise, but it's not going to solve the weight loss issue

#

also, https://medium.com/@AaronBleyaert/how-to-lose-weight-in-4-easy-steps-1f135f7e1dec

Medium

HOW TO LOSE WEIGHT IN 4 EASY STEPS

I’ve spent the past year losing 80 lbs and getting in shape. A lot of people have been asking me how I did it; specifics like what diet I…

late fulcrum Sep 12, 2021, 3:45 AM

#

I got some adjustable dumbbells, I use them whenever I need a break from coding. This turns out to be effective for me.

wooden schooner Sep 12, 2021, 3:46 AM

#

nice. I keep a yoga mat next to the desk and try to do warrior pose for a few minutes every couple hours. my hips are tight

delicate stream Sep 12, 2021, 3:46 AM

#

Weight loss is certainly no simple matter! It does take work on several fronts, but no one thing will just do it.... But I also think different folks need different things

delicate stream Sep 12, 2021, 3:47 AM

#

late fulcrum I got some adjustable dumbbells, I use them whenever I need a break from coding....

I had dumbbells at my desk... They sat there and I would play with them with my feet and forget about actually using them

subtle fable Sep 12, 2021, 3:47 AM

#

The only shortcut to losing weight is to lose a leg or two

delicate stream Sep 12, 2021, 3:48 AM

#

Or slice off some fatty bits like love handles

#

Precision carving

wooden schooner Sep 12, 2021, 3:48 AM

#

that's a myth, if you sever your love handles it doesn't actually reduce your mass

#

science, man

delicate stream Sep 12, 2021, 3:48 AM

#

Lol

quartz wren Sep 12, 2021, 3:57 AM

#

So I have decided

#

On my laptop there will be 2 built in multimeters I can use through a program

#

As well as using the resistive touch TFT I have in place of a track pad mouse with different input modes.

#

(mouse, secondary screen touch input, DS emulation, programmable soft button panel for input, etc.)

#

And a custom keeb because I think I'll be able to.

#

Just barely

delicate stream Sep 12, 2021, 4:00 AM

#

Gotta have the custom keeb, otherwise... what's the point?

quartz wren Sep 12, 2021, 4:01 AM

#

I just don't know if my budget has the margins for a custom fabbed board and all the buttons

#

Will have to see once I get the game console prototype board designed and fabbed

delicate stream Sep 12, 2021, 4:01 AM

#

Just use the ortho snap-aparts :D

#

Or get sockets and just glue the sockets to a literal board

quartz wren Sep 12, 2021, 4:02 AM

#

I mean yeah I can 3D print a receptacle I guess

delicate stream Sep 12, 2021, 4:02 AM

#

That too

#

Don't need a custom PCB

quartz wren Sep 12, 2021, 4:02 AM

#

The rest of the case will be printed anyway

#

Just needed a solution that would lift out as one unit

delicate stream Sep 12, 2021, 4:02 AM

#

The ortho snap=aparts are kinda expensive... But I think the sockets are CHEAP

#

Yeah, pack of 20 sockets is $4.95

quartz wren Sep 12, 2021, 4:03 AM

#

And wouldn't look too janky or be too expensive

#

Nift, definitely in budget

#

Okay well still it's the last thing I want to do on the laptop because I can use USB or PS/2 input

delicate stream Sep 12, 2021, 4:04 AM

#

Much cheaper than the 5x6 ortho snapapart for $29.95

delicate stream Sep 12, 2021, 4:04 AM

#

quartz wren Okay well still it's the last thing I want to do on the laptop because I can use...

Literally just plonk an IBM Model M in there

quartz wren Sep 12, 2021, 4:04 AM

#

Hehehe

#

Laptop 2 smol

delicate stream Sep 12, 2021, 4:05 AM

#

That'd make it a little thick XD

#

Ohhhh, I'm glad I came back to my desk, print just finished

quartz wren Sep 12, 2021, 4:05 AM

#

It's already going to be thick, just not that wide...

#

I'm cramming 5 layers of prototyping space (including keeb panel) into this thing...

#

Well, 3 if you don't count keeb or screen panel layers...

#

So will be packed tight and a thicc boi

#

So many jokes I didn't make. Sorry for even thinking them...

delicate stream Sep 12, 2021, 4:07 AM

#

lol

quartz wren Sep 12, 2021, 4:08 AM

#

I'm literally dropping a whole waxwing FPGA dev board in this thing accessible through the bottom panel...

#

For hardware-defined shaders and coprocessor stuffs reprogrammable on the fly by the system

#

Well not on the fly, too slow of reprogramming speed but at the start of program loads.

#

Just wish I could find that USB hub chip my life would be so much easier...

#

Also I figured out how to do SMD and through hole prototyping space on the same board.

#

Just basically those SMD to DIP breakout boards but arrayed across a larger space with rows of through hole prototyping space between them, do the finer pitch SMD ones on one side and the coarser one on the other just the same

#

And then I'm doing a mini ITX form factor for the board with breakouts on the panel area for all the ports I need that don't align to the prototyping grid to break out into rows of the through hole prototyping grid

delicate stream Sep 12, 2021, 4:14 AM

#

You're the best kind of crazy, you know that, right? XD

quartz wren Sep 12, 2021, 4:14 AM

#

Yep

delicate stream Sep 12, 2021, 4:14 AM

#

Hehe

quartz wren Sep 12, 2021, 4:14 AM

#

Oh if anyone wants this board design I'll be open sourcing it

#

Literally a proto motherboard in mini ITX

delicate stream Sep 12, 2021, 4:15 AM

#

I'm going to make an EATX RP2040 board

quartz wren Sep 12, 2021, 4:15 AM

#

Of course the design will have a custom header not PCI or pcie

#

Oh also its connection in that spot will be a 90 degree so you can drop the same board in an ATX case and add an expansion board for those headers that lines up with the ATX card slots and uses the remaining mount points

delicate stream Sep 12, 2021, 4:17 AM

#

Noice

#

Ok, need sleep... Night

quartz wren Sep 12, 2021, 4:17 AM

#

Sleep well

delicate stream Sep 12, 2021, 4:17 AM

#

I'll try XD

quartz wren Sep 12, 2021, 4:26 AM

#

Okay time to get nice and caffeine laden

#

I'm about to pull an all nighter and learn kicad

#

At least well enough to get a design layed out for this board

#

And hey, while I'm at it there's no reason I couldn't design the prototype expansion slot board in the same way

#

Just break out the headers to the same kind of grid, get the whole prototype space available at least in design right from the get

#

Last time I had singular purpose. This time I have any purpose with a singular multi-branching and self-intersecting path.

#

I know what I'm doing this time and will have a board that can be useful in other realms than what I'm designing it for

#

Rather than a single purpose prototyping board with minimal configurability.

crystal ore Sep 12, 2021, 4:31 AM

#

Heh, I'm just imagining what this channel will probably look like around 4:00am after you've been hip-deep in Kicad and caffeine for hours and hours...

quartz wren Sep 12, 2021, 4:31 AM

#

I leave a trail of verbosity in my wake...

#

It ain't just this channel trust me... It's just only this channel on this server...

#

Want to see the boards I'm prepping for dual multimeter input on my laptop?

#

#

Going to buffer their mode select and decoded screen outputs into memory locations the 6507 can directly write to and read from

#

Might even make them overlap in memory since one is write only and the other read only

#

So like to set the mode select buffer for one of the boards, you would write to the same location that if you read from would give you the value on screen

#

Anyway with 2 multimeters I can do dual channel low duty cycle input logging

#

But tonight is about the proto ITX

#

Actually that's a super good name for it

#

ProtoITX ™️

#

"want to mount your project easily in a standard PC case with IO lining up properly? Buy the ProtoITX"

#

Etc.

#

"expansion boards sold separately*"

#

Honestly though I'm open sourcing the design so if anyone who's got a bug in the ear of a big company who would want to manufacture and sell these, I have no issue with it I just like the idea and want it available so I'll design the board and open the design

#

But I, for one, think ProtoITX is a marketable name

#

Probably hyphenated though, thoughts on "ProtoITX" versus "Proto-ITX"?

#

Ooh! Crazy thought... What if in the spot where I want to put Pico I actually stick the Pico's board layout straight onto the board all hooked up to the socket pins so I can test doing the bare chip version of the design

#

Then during initial testing I don't populate it and just drop a Pico socket in that spot

#

But when I'm ready to design around the bare chip there's pads and whatnot all layed out to the same pins

#

So I can remove the socket (or just leave it in) and populate the board directly with the Pico's implementation circuitry

#

And not have to do any changes to the the rest of the board or redesign

#

Then when I have a solid final design I can redo the whole thing in the same profile using the connections I've figured out during prototyping and the inevitable bodge, check, bodge, check loop

#

But as a set design

#

That way no commercial versions ever need bodges

#

Because all of that will have been figured out and remedied during the prototype / dev phase

#

Well most of it I guess... Always a chance something slips through

#

So you know what? Instead of leaving wasted space just holding ground plane, I'll use any extra space to put prototyping area even on the final version.

#

For the modding community

#

I want people to easily be able to mod the crap out of these things

#

Oh and for the 65C02 I will have its connection header also break out to the pads for the SMD version because why not

#

Then you can have a socketed DIP 6502 or a permanently affixed SMD one

#

Might even make any pin mapping differences able to be selected for compatibility using jumpers so you can use a 65C02 or an original

#

With just either a DIP switch or jumpers

#

I want max configurability

#

And heck I may just use the Proto-ITX as a basis for the final board and just reroute the traces that need to be but leave everything else untouched

#

But still conform it to the same grid and whatnot

#

So that you can just drop the same stuff on the proto board in exactly the same spots and just jump things where needed

#

For making it from scratch

#

And so I don't have to re learn where everything goes

weary fiber Sep 12, 2021, 6:51 AM

#

Gonna do an experiment and wear my laser glasses for 24 hours

#

They attenuate 540nm-190nm light by 5 orders of magnitude, so I guess blue cones will just not receive much

quartz wren Sep 12, 2021, 7:03 AM

#

Sounds like it's going to hurt when you take them off...

weary fiber Sep 12, 2021, 7:07 AM

#

They let through green & red light just fine, so I hope it won’t be too bad

quartz wren Sep 12, 2021, 7:44 AM

#

Blue is particularly sensitive though so just uh... Be prepared

quartz wren Sep 12, 2021, 9:16 AM

#

yeah, definitely not pulling an all nighter...brain says need sleep

#

won't learn much if I try and all night kicad

delicate stream Sep 12, 2021, 11:18 AM

#

quartz wren Sleep well

I failed

#

https://tenor.com/view/arrrrrrrr-fun-excited-hooray-thrilled-gif-13791631

Tenor

delicate stream Sep 12, 2021, 12:31 PM

#

Lol https://hackaday.com/2021/09/11/3d-printed-hat-blasts-the-rain-away/

Hackaday

Dave Rowntree

3D Printed Hat Blasts The Rain Away

Some ideas are so bad that we just try them anyway, at least that seems to be [Ivan Miranda]’s philosophy. No stranger to just totally ignoring the general consensus on what you can (or at le…

blissful roost Sep 12, 2021, 2:59 PM

#

Oh wow... Far Cry 3 didn't shank my PC and leave it bleeding in a gutter.

#

Frame rate is far from great, but it's playable.

delicate stream Sep 12, 2021, 3:12 PM

#

Ok, I'm very sad... I had a mint condition Suse 9.0 box, and apparently it fell on the floor and was soaked on floods T.T

wooden schooner Sep 12, 2021, 3:48 PM

#

Insert joke about Linux Mint. But sry

#

I'll probably do Mint on my next box. "Snap Store" and Ubuntu 20.04's insistence on promoting it means it's time to get off Ubuntu

#

And also that's kind of why Mint was made

#

To be like Ubuntu without the Canonical antics

late fulcrum Sep 12, 2021, 3:55 PM

#

Do you mean "box", as in the brightly printed cardboard box the software is packaged in, or "box" as in the computer the software runs on?

tardy badger Sep 12, 2021, 4:13 PM

#

#

A design so nice, I made it twice

covert spire Sep 12, 2021, 4:32 PM

#

wooden schooner I'll probably do Mint on my next box. "Snap Store" and Ubuntu 20.04's insistenc...

Reasons I'm swapping to ZorinOS

#

I loved Mint when I got on it, but it's gone that way

wooden schooner Sep 12, 2021, 4:34 PM

#

what!!

#

the whole point was for it to not go that way!

dusty citrus Sep 12, 2021, 4:35 PM

#

Debian 11 just came out last month and it has been solid.

wooden schooner Sep 12, 2021, 4:35 PM

#

yeah, I was going to say, might be time to move to straight-up Debian

#

I really hope Debian keeps its emphasis on free software

#

@covert spire what terms should I search to find out what Mint did?

dusty citrus Sep 12, 2021, 4:37 PM

#

I recommend that you ask this in #help-with-circuitpython

zealous umbra Sep 12, 2021, 4:38 PM

#

@dusty citrus so sorry - didn't check which channel I was defaulted to. 😦

wooden schooner Sep 12, 2021, 4:38 PM

#

zealous umbra <@456226577798135808> so sorry - didn't check which channel I was defaulted to. ...

it's not clear that one has to apologize for sending an on-topic message to #general-chat...

#

🙂

covert spire Sep 12, 2021, 4:49 PM

#

wooden schooner <@!300680062766678027> what terms should I search to find out what Mint did?

I just know from their patch updates, & news for new versions

#

Altho, I believe now Ubuntu has more platforms it's on, & gamers are starting to support it. It'll continue to prosper

wooden schooner Sep 12, 2021, 4:52 PM

#

my understanding is that Ubuntu has a pretty solid hold on deep learning deployments, due to them being nvidia's favorite distro. Didn't realize gamers are using them too; I don't even think they needed that

#

It'll continue to prosper
yeah - when a company that sells linux products moves towards being more commercially self-interested, I tend to assume it's expressly for the purpose of that company continuing to exist and "prosper"

#

with more emphasis placed on the company prospering than on the community prospering, usually(/always)

covert spire Sep 12, 2021, 4:59 PM

#

I mean, for my work pc, where having friendly enough UI apps & such that I'm not concerning presetting much myself. ZorinOS seems to have that pretty well down, but it's a company, instead of a community based, like Mint

#

I went to Mint for something to play with between times I use it for work. But for what it became, like mentioned Prior, flipping to Debian seems more interesting

delicate stream Sep 12, 2021, 5:07 PM

#

late fulcrum Do you mean "box", as in the brightly printed cardboard box the software is pack...

Brightly colored cardboard box the software was packaged in

delicate stream Sep 12, 2021, 5:33 PM

#

I think Windows 11 looks yucky. Does anyone else agree?

blissful roost Sep 12, 2021, 5:35 PM

#

Yarp

delicate stream Sep 12, 2021, 5:37 PM

#

Ok, good, I'm glad I'm not the only one

blissful roost Sep 12, 2021, 5:37 PM

#

Wanna know what's yummy?

tardy badger Sep 12, 2021, 5:37 PM

#

I’m skeptical on it

delicate stream Sep 12, 2021, 5:37 PM

#

I hate that they won't just offer options... Not everyone likes the same thing!

delicate stream Sep 12, 2021, 5:37 PM

#

blissful roost Wanna know what's yummy?

Lemme guess... Mint?

blissful roost Sep 12, 2021, 5:38 PM

#

That too...

delicate stream Sep 12, 2021, 5:38 PM

#

Lol

blissful roost Sep 12, 2021, 5:38 PM

#

But...

Bagel, cream cheese, bacon and apple sauce.

delicate stream Sep 12, 2021, 5:38 PM

#

Lmao

#

That's an... Interesting combo

blissful roost Sep 12, 2021, 5:39 PM

#

It's good though

delicate stream Sep 12, 2021, 5:40 PM

#

I'm skeptical

blissful roost Sep 12, 2021, 6:05 PM

#

Well, that's two I've had today. 😁

delicate stream Sep 12, 2021, 6:11 PM

#

lol

blissful roost Sep 12, 2021, 6:17 PM

#

burnt tendon Sep 12, 2021, 6:22 PM

#

Try using a doughnut instead.

blissful roost Sep 12, 2021, 6:22 PM

#

Nah.

#

Too hard to slice, for one. Lol

tardy badger Sep 12, 2021, 6:26 PM

#

No one said anything about slicing a donut

#

Just use two

delicate stream Sep 12, 2021, 6:32 PM

#

This is just getting weirder

wooden schooner Sep 12, 2021, 6:39 PM

#

My usual breakfast/misc food is ground lamb amid sauteed finely chopped broccoli + cauliflower

#

or sub egg for the meat, like so

delicate stream Sep 12, 2021, 6:46 PM

#

Egg meat!

delicate stream Sep 12, 2021, 7:16 PM

#

I did it again

tardy badger Sep 12, 2021, 7:16 PM

#

Lol

blissful roost Sep 12, 2021, 7:18 PM

#

Can we please stop trying to give SD cards hair styles.... ?

delicate stream Sep 12, 2021, 7:22 PM

#

XD

#

I use adapters to make sockets for MCU breadboarding.... what else can I do with the 28948793 I have laying around?

quartz wren Sep 12, 2021, 7:37 PM

#

delicate stream I did it again

I've done this a few times

delicate stream Sep 12, 2021, 7:39 PM

#

quartz wren I've done this a few times

Way cheaper than buying breakouts XD

quartz wren Sep 12, 2021, 7:40 PM

#

Yeah and the SD adapter slots line up with proto board grids so you can solder pins to the pads and solder it straight to a board

delicate stream Sep 12, 2021, 7:43 PM

#

Ohhh, I should do that

quartz wren Sep 12, 2021, 7:44 PM

#

Tried this too but it didn't work very well... Probably could work with improvements

#

https://i.imgur.com/GzsHPX4.jpg

Imgur

#

This would allow either size SD card if you use an adapter

#

But I have to refine the design with fingers instead of pins

#

Probably from an IC socket or a VIC-20 card slot

#

@delicate stream yeah yeah I know "best kind of crazy" 😛

#

These days if I need SD I just borrow the slot from one of the 3D printer screens I have laying around

#

But it could be cool to design a home-buildable SD card slot and put out a tutorial for people who don't have the screens available

#

The problem with the pins is they're too stiff and without aligning perfectly before insertion of the card some will not make contact

#

But with something bendier this design could absolutely work

#

And be made from scrap

#

Best one I've seen though is turning a 5.25" floppy cable into an SD card slot

#

Problem is those get rarer and rarer over the years. IC sockets I don't see having a shortage of so long as tech keeps going

#

And with their ubiquity, they'll be available in scrap for many years after the tech infrastructure collapses

#

So would be a readily available apocalypse material

#

And thus even in the apocalypse you could build something to read SD cards without having to solder straight to them

#

(that's usually my target for availability as far as being able to build things as opposed to just buying modules and assembling)

#

(because if it could be done in the apocalypse I can more easily do it now)

#

And usually that's about what kind of material selection I have with a few purchases here and there that boost the usability of the scrap

delicate stream Sep 12, 2021, 8:06 PM

#

I may or may not have completely melted an adapter, lol

quartz wren Sep 12, 2021, 8:08 PM

#

Yeeeeah it happens

#

That's why I was trying to design a scrap-built slot

#

So you don't have to heat the cards or adapters

#

Know what might actually be really cool?

#

A ZIF SD slot with screw terminals for clamping the connections so vibrations don't loosen it for things like flight data logging

#

Maybe with castle heads that get tied from turning with a drop in bar

#

And align when tightened to the correct amount

#

Then you could have removable flight logging without fear of it vibration and losing connection to the card

#

So that you don't have to like desolder a chip to get the data or have in-circuit log dumping

#

Although the latter may be the simple solution

#

Just have a header on the board shaped like and conforming to an SD card that has a select signal between being connected to the onboard MCU and the SD header. Then if you want to read the card you plug the board into an SD card slot and send the connection swap command over serial and you can have the SD card removed from its plastic and soldered right onto the flight controller surface mount

#

Without losing the ability to access it through any SD slot

#

Just make a selectable header pass through shaped like the card sticking out of the board...

#

If you had the right firmware you could even have it load new software from the SD card

#

That you've plopped onto it via a file manager like with Pico

#

But for any MCU

#

In fact you could use the same mechanism to enter programming mode! Namely a push button that if held while inserting the board into an SD slot it enters the mode that allows the computer to read and write

#

But if not held during power up is ignored so that if it's accidentally pressed during run mode it doesn't cause a disconnect from the MCU

#

Basically the button would be checked on boot and if pressed, hand over SD control to the header but if not, check to see if the hash of the SD card's contents is the same as last time. If not, update code. Else boot normally.

#

Then the button can just be used as an input too

#

After the boot sequence has completed

#

Or actually hang on

#

No need to do the hash checking if it's running a low level interpreter of code on the SD (a pure virtual machine)

#

Because if the code has changed, operation will change with no need for a check

#

And it allows you to read what's running on it by reading the SD card's contents

#

Sure there's a bit of overhead but if it's interpreting the same architecture it is running on, it can use clever tricks to optimize later

#

Or at least, an architecture with enough overlap in actual opcode functionaly

#

But actually I want to get an arduino mega to run a Lua interpreter that uses highly efficient (probably ASM implementations) low level code that does precisely what is needed for each native function

#

Then you can write Lua that can interface to all the pins using the Arduino mapping standard (with user editable definitions when building the firmware so that you can set up a new microcontroller with little effort) as well as having some more... High level functionality that uses low level tricks to allow it to actually run interpreted

#

(at a usable rate)

#

Then you just write some high level code, plop it on the SD card by plugging the board into a slot in programming mode, and it will run it.

#

Kind of like micropython(?) (whichever firmware lets you do python on Pico) but for Lua and for any MCU someone wants to write the definitions for

#

I love Lua and it's going to be the core language of my game consoles including for the OS so people can easily mod it so if I can do it on a mega I can do it on a Pico

#

Especially since Pico can do SD access and buffering through PIO so it does not have to do that using system CPU cycles

#

Oh...

#

I have a thought don't try to stop me

#

starts furiously researching some stuff

#

Yup I know what I'm going to do

#

I'm going to use an ATMega32u4 to do the basic interpretation of the code into a lower level intermediary but more concrete control language for the Pico

#

That way to load a program it gets interpreted from the high level Lua into basically Lua's version of "bytecode" which then gets buffered into the Pico for actual run time

#

And the Pico can request an undefined function or class's byte code only when it needs it rather than storing the whole thing at once and it can load in dynamic modules

#

And

#

If you have code running would allow you to add code during runtime. All you have to do is enter a mode you know it won't be requesting new code from the SD controller, remove the card, add the module, put the card back in, and then reference the new code.

#

Which means real time iteration of design

#

at runtime

#

Also allows self modifying code if I allow the Pico to also write arbitrary data to the card's files. Then it can dynamically generate and then dynamically load code

#

But actually

#

I can have a hard-set SD card that has a bunch of space for buffered bytecode then have a removable one that can interpret the ASCII representation into that bytecode...

#

The Pico would directly control the buffer card and the ATMega32u4 would do the removable drive control

#

That way you can buffer a lot of code base locally and dynamically swap it at runtime

#

And the nice thing about Pico is that even if it can't access larger drives via software control I can probably get it to do so via PIO

#

So I may be able to give it a 128GB local flash storage for buffered interpreted intermediary code

#

Which would mean that actually it would be just like Pico's USB mass storage flashing mode... Except you could store things to it for when it gets removed to be read on another device

#

So you load in the code, if symbols in that code supercede existing ones the existing ones are overwritten and new symbols are added and indexed

#

And have a standard method name for code entry point

#

That way the user has complete control of the system by overwriting that method to call their own startup code.

#

But all the other code that hasn't been overwritten is still available

delicate stream Sep 12, 2021, 8:56 PM

#

Try 2 success!

quartz wren Sep 12, 2021, 8:56 PM

#

NOICE!

#

glad I was able to offer a more breadboardable solution

delicate stream Sep 12, 2021, 8:57 PM

#

It does make it easier to store XD And then I can just use my jumper cables instead of soldered wires

#

I mean... they're the same thing, lol

quartz wren Sep 12, 2021, 8:58 PM

#

Yes but it's so much easier to slot all the pins in at once than plugging individual wires

delicate stream Sep 12, 2021, 8:58 PM

#

Fair

quartz wren Sep 12, 2021, 9:00 PM

#

And you could use this in combo with a female header to add to your projects that don't need concurrent SD access

#

So you can use the same adapter for all of them

delicate stream Sep 12, 2021, 9:00 PM

#

Eh, if I was gonna actually use it in a project, it would get soldered wires

quartz wren Sep 12, 2021, 9:01 PM

#

Fair I guess I just don't have as many adapters on hand so I try to reuse them where I can

#

Mostly what I have is USB adapters

#

Although...

#

If I use that with Pico's USB and a hub it may be easier to access larger cards that way...

#

I already plan to use hubs extensively

wooden schooner Sep 12, 2021, 9:04 PM

#

Liking the small form factor and sleek look of this baby

quartz wren Sep 12, 2021, 9:05 PM

#

Yes I know latency and bandwidth limitations for each stage, but I have it mapped out to minimize the number of stages

delicate stream Sep 12, 2021, 9:05 PM

#

I have a microSD adapter from every single card I get XD

wooden schooner Sep 12, 2021, 9:05 PM

#

Nice lightweight portable charger for the commute... which will be more significant when I have one again

#

And honestly I like irrationally much the fact that they say simply "65W" where they could have put a brand name

quartz wren Sep 12, 2021, 9:10 PM

#

I mean, they know it's more important to the user than who made it

delicate stream Sep 12, 2021, 9:11 PM

#

looks at laptop with 125W adapter

wooden schooner Sep 12, 2021, 9:15 PM

#

delicate stream *looks at laptop with 125W adapter*

Idek what to say

#

Pentium?

wooden schooner Sep 12, 2021, 9:16 PM

#

quartz wren I mean, they know it's more important to the user than who made it

This tends to never stop anyone

quartz wren Sep 12, 2021, 9:18 PM

#

Yes I know I was explaining why you liked it

#

Okay so I think I almost have all of the modules figured out for my laptop and it is... Well it just keeps evolving...

delicate stream Sep 12, 2021, 9:22 PM

#

wooden schooner Pentium?

Lmao, no, 6700HQ and GTX 950m

quartz wren Sep 12, 2021, 9:23 PM

#

Ooh nifty arduino nano can do 5v analog read at 10 bits on 8 channels... I should use this one as the analog interface since Pico only has 3 channels and only goes to 3.3v

#

For things like charge indication and whatnot

#

Would allow me to do PWM driven colors on battery check indicator without having main system turned on too

#

(once I have the boost converter to get a 5v reference from)

#

Or I could just have it so all battery checks while powered off are done through the defaults from charge control chip so you aren't wasting battery life but have it so that the USB charge input is used for reference voltage on nano, powering it for doing smooth charge color transitions, as well as charging the battery

#

Nanalog, IMU, and wifi from left to right

#

Speckles are gesso and are harmless

#

Project they were on somehow ended up in the splash zone while I was helping my brother prime canvases haha

#

@late fulcrum did you say I could use an h bridge for a charge pump? I have 2 designed for motor control...

#

Well actually I have 3 but I have 2 on a board...

#

With beefy heat sinks

#

Well, as compared to the chips

#

These things can handle a lot but from what I've read they're kind of inefficient as motor drivers even though they can control both steppers and DC brushed motors

#

But may be good as drivers for boost idk

#

I was going to use them to control drone motors and with the setup I had it would have worked but I'll shelf that for now... I did however make something people here may be interested in. 3D printable modules they hold motors and can mount onto a breadboard style prototype PCB

#

I can link to the thingiverse file if anyone wants

#

https://www.thingiverse.com/thing:3884552

Protoboard Quad 8mm Brushed by tacodrake95

Quadcopter attachments for boards compatible with https://www.radioshack.com/products/radioshack-printed-circuit-board

#

The goal was to design a whole kit that classrooms could use to teach robotics in a more fun way with any level of starting point with regards to the abstractness of the control software inputs required to make it do what you want. For younger or less experienced audiences it would have firmware that takes in simple inputs and for more advanced audiences you would start entirely from scratch on it with every level between written already so you can choose what your target audience is with the same project

#

Still planning on finishing that just not my current priority

weary fiber Sep 12, 2021, 9:55 PM

#

sometimes my math textbook is merciful, giving slow and easy explanations

#

other times, it explains things in very general terms & with large equations, like this brutal BS

#

the struggle is real

quartz wren Sep 12, 2021, 9:57 PM

#

And then you have to derive all the formulas you care about XD

#

I wonder how hard it would be to 3D print the mechanisms for a membrane pump powerful enough to make a desoldering iron...

#

Use an old inner tube for the membrane(s) and use a 3D printer nozzle on a heat block with a wide opening for the tip...

wooden schooner Sep 12, 2021, 10:02 PM

#

weary fiber other times, it explains things in very general terms & with large equations, li...

ah yes, the age-old trick of multiplying through by exp(\int P(x) dx)

#

classic. Shows up over and over in deep mathematics.

#

/s

weary fiber Sep 12, 2021, 10:03 PM

#

at least they have a tl;dr at the bottom LMAO

quartz wren Sep 12, 2021, 10:03 PM

#

Ayyyy

wooden schooner Sep 12, 2021, 10:03 PM

#

it's a guess that someone pulled out of his butt once and it worked. As far as diff eq solving techniques go, I don't think there's anything deep to learn from this one

weary fiber Sep 12, 2021, 10:04 PM

#

oh actually? lit

wooden schooner Sep 12, 2021, 10:04 PM

#

as far as I know. And I'm a math lover

#

(so if anyone here has a correction I'd be happy to hear it)

weary fiber Sep 12, 2021, 10:04 PM

#

the book was hyping this up as a "general method that works for most linear diff eq's", but tbh it just seems like a re-explanation of stuff it already taught

wooden schooner Sep 12, 2021, 10:12 PM

#

the equations it solves are those that have the form (3) -- look no further 🙂

hasty quarry Sep 12, 2021, 10:17 PM

#

Why don’t dehydrated people just exercise?

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So then their body produces water

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Crazy stuff

quartz wren Sep 12, 2021, 10:19 PM

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Not only does the body produce water as a byproduct of aerobics but it also triggers the thirst reaction

hasty quarry Sep 12, 2021, 10:19 PM

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Exactly so then not only is their body making water for them, it’s making them want to drink it

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Man I need a philosophy degree

wooden schooner Sep 12, 2021, 10:20 PM

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and we need a Roll Safe emoji

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hasty quarry Sep 12, 2021, 10:22 PM

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bigbrain

weary fiber Sep 12, 2021, 10:25 PM

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that left-side-simplification is some voodoo magic

wooden schooner Sep 12, 2021, 10:27 PM

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recognize
mhm nice one

weary fiber Sep 12, 2021, 10:29 PM

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oh wait, it's typical "integrating factor" stuff, but they switched notation & used it without explaining what's going on

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...and this is the "integrating factors" chapter

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this textbook is somethin else

late fulcrum Sep 12, 2021, 10:31 PM

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quartz wren <@348911944486486016> did you say I could use an h bridge for a charge pump? I h...

Yes, you can: it may be overkill, but it should work

quartz wren Sep 12, 2021, 10:34 PM

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Noice

hasty quarry Sep 12, 2021, 10:40 PM

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weary fiber

Wait a second

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dy/dx?

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Is that an implicit differentiation

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Christ, that is hard to look at

weary fiber Sep 12, 2021, 10:42 PM

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I FINALLY WORKED IT OUT

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it's simplified by partial differentiation AND the product rule

hasty quarry Sep 12, 2021, 10:42 PM

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Uhuh

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Interesting

weary fiber Sep 12, 2021, 10:42 PM

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the book choosing not to explain that is filthy

jovial path Sep 12, 2021, 10:49 PM

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Yesterday I walked about 4 km

quartz wren Sep 12, 2021, 10:59 PM

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Tiny bodge r hard

wooden schooner Sep 12, 2021, 11:04 PM

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hasty quarry Is that an implicit differentiation

yes. Here "y" denotes an unknown differentiable function of x, and solving the diff eq means figuring out what are the possibilities for what that function could be

hasty quarry Sep 12, 2021, 11:09 PM

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Interesting

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I see it as a function that happens to take more than one input, and associates the combination of them to a number

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dx/dy. How much does that output change as either of the inputs does

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Like the derivative of the circle formula being.... 2x*dx + 2y*dy? Yeah

late fulcrum Sep 12, 2021, 11:11 PM

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I found some cheap Halloween glassware at a craft store and immediately thought "CRT jugs"!

Kspo0i4aXt0yVBOMoWBTLPouInfGyAY8ANgb5La0qty1IEZMTJiJcwwA-0d4KY0zUwxHoUdf_bUtu_PnyT5hhfllQieRQp8SgqJp.jpg

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I expect it's ordinary soda glass, but I'm tempted.

hAzx1y7ofNhp0UZRyJSyWVbCkRmuQMOyUsX6b3ZlkHJhsQAUJYGxNUGd7_wPu_Kk1aw38L4fHHtbxxJetZAKf5QCJkx2PijnFJHk.jpg

tardy badger Sep 12, 2021, 11:12 PM

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Can you make CRT jugs without mercury vapor?

late fulcrum Sep 12, 2021, 11:13 PM

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Absolutely, they're vacuum tubes, not mercury vapor tubes.

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Unless you're thinking of a Sprengl or mercury vapor diffusion pump

wooden schooner Sep 12, 2021, 11:13 PM

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hasty quarry Like the derivative of the circle formula being.... 2x\*dx + 2y\*dy? Yeah

yes, ultimately this is the way it's viewed in modern differential geometry. https://en.wikipedia.org/wiki/One-form#Differential

One-form

In linear algebra, a one-form on a vector space is the same as a linear functional on the space. The usage of one-form in this context usually distinguishes the one-forms from higher-degree multilinear functionals on the space. For details, see linear functional.
In differential geometry, a one-form on a differentiable manifold is a smooth sec...

tardy badger Sep 12, 2021, 11:13 PM

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I just remember that old CRT tubes for TVs had mercury

hasty quarry Sep 12, 2021, 11:14 PM

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wooden schooner yes, ultimately this is the way it's viewed in modern differential geometry. ht...

Scary

late fulcrum Sep 12, 2021, 11:15 PM

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I really don't think they did. Lead, yes, and barium, strontium, calcium, tantalum, and some rare earths in the phosphors, but I really don't think there was any mercury involved.

tardy badger Sep 12, 2021, 11:16 PM

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late fulcrum I really don't think they did. Lead, yes, and barium, strontium, calcium, tanta...

https://www.techdump.org/need-tv-recycling-crt/

Tech Dump

I need TV recycling, but is it a CRT?

Each day Tech Dump receives calls asking about TV recycling.There are a few key indicators that you have a CRT TV, but don't worry, we still recycle them!

late fulcrum Sep 12, 2021, 11:16 PM

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There are some tube types that use mercury vapor, but I don't remember any CRTs doing so.

tardy badger Sep 12, 2021, 11:16 PM

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This lists mercury has a component in some CRT tubes

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Doesn’t say how much, just that they had 4-8lbs of lead

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I know lead was one of the bigger environmental concerns of CRT tubes

late fulcrum Sep 12, 2021, 11:19 PM

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Interesting. I'm pretty conversant with CRT technology and am unaware of mercury being used. The lead is totally real (a thick lead glass face plate served as implosion protection and an X ray shield), and the phosphor chemicals could indeed be toxic. But mercury? I think someone confused something else like fluorescent tubes, which do contain a small amount of mercury.

tardy badger Sep 12, 2021, 11:19 PM

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Mercury was very pervasive in old electronics

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Still used in fluorescent tubes as well

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It’s typically used as an ionizing vapor

late fulcrum Sep 12, 2021, 11:20 PM

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Mercury also turns up in mercury switches, arc lights, some battery chemistry, certain sensors, etc. But that's about it. I wouldn't regard it as "pervasive". Oh yeah, it shows up in some rectifier tubes as well.

tardy badger Sep 12, 2021, 11:20 PM

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I say pervasive because it is in quite a few things people tend to not think about

late fulcrum Sep 12, 2021, 11:21 PM

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The vapor in fluorescent tubes was originally argon, modern ones often use krypton as a carrier gas, the mercury vapor served to produce shortwave UV radiation which was converted to visible light (usually) by fluorescing phosphors.

quartz wren Sep 12, 2021, 11:26 PM

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late fulcrum I found some cheap Halloween glassware at a craft store and immediately thought ...

Noooooice! Found an old liquor bottle the other day that looks like it should work too

tardy badger Sep 12, 2021, 11:27 PM

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Cookies

quartz wren Sep 12, 2021, 11:27 PM

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Might need to heat it to glass transition temperature with pressure into it to push the indenting handles outward but I don't think they will get in the way

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Other than that it's almost perfect

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Yummy!

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I have cookies I've been meaning to make for a while...

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Peanut butter chocolate chip

tardy badger Sep 12, 2021, 11:31 PM

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I whipped some up just over the last hour or so

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Mine are also peanut butter chocolate chip lol

quartz wren Sep 12, 2021, 11:32 PM

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Made a small batch a while back and they they were really good so I got a tub of peanut butter specifically to make a bunch more but haven't had enough free kitchen time when I'm not busy doing other things (share the space with several people)

wooden schooner Sep 12, 2021, 11:45 PM

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hasty quarry Is that an implicit differentiation

On second thought, maybe this is not an instance of what most people mean when they say "implicit differentiation." Here y is an unknown function of x, but that function is not defined "implicitly" by a constraint such as the circle equation x^2 + y^2 = 1. Instead the diff eq itself is what specifies the relationship between x and y. Just wanted to flag that "implicit differentiation" as used in your context might mean something more specific.

hasty quarry Sep 12, 2021, 11:45 PM

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I see, thank you

dusty citrus Sep 13, 2021, 12:14 AM

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just saw the trailer for matrix 4. whoa.

blissful roost Sep 13, 2021, 12:18 AM

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https://c.tenor.com/lBPGdhDqxJcAAAAM/keanu-reeves-whoa.gif

quartz wren Sep 13, 2021, 12:20 AM

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Yoooo

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I think I just designed a multi conformant SMD breakout for my prototyping board

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For chips with a central ground pad, disconnect the part of the pads that connect to the non-ground pins further in than where those pads connect the pin to the rest of the circuit

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Should work for chips both with 2 and 4 rows of pins

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And I can do one pitch on one side of the board and another on the other side

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Oh scalable too

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Probably needs to be more like this though

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Oh I saw a hummingbird today near my lab! I'm going to build a feeder

quartz wren Sep 13, 2021, 12:56 AM

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Yaaaaaaaay! My brother showed me the things that still need to be done on the roof and I can finish it 😄

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Which means I can start using the lab space probably when I get back from going out of town

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(won't have walls yet because we have to wait for the floor to dry before we can waterproof it and then put the walls up but my current space also doesn't have walls and I bang my head on the ceiling sometimes)

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(so an improvement regardless)

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But like, things are moving forward!

delicate stream Sep 13, 2021, 1:47 AM

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hasty quarry Why don’t dehydrated people just exercise?

https://tenor.com/view/sus-fry-futurama-gif-4691459

Tenor

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@late fulcrum Do you have a good guide for making a CRT from random glassware?

late fulcrum Sep 13, 2021, 1:49 AM

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Not in specific, just some books on glasswork, tube making, and CRT history. There are some youtube videos out there too.

quartz wren Sep 13, 2021, 5:07 AM

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Kinda got bored drawing partway through but this is kind of my vision for the universal SMD breakout

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With of course the half width pitch profile on the other side of the board

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Basically going to array these on a board in a clever way with other space that is just for DIP chips

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And no matter the profile's pitch you can scale it relative to the prototyping grid easily

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Anyways still procrastinating learning kicad for some reason

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Soon as I do though this is a super easy design to draw up

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Turns out drawing a bunch of tiny circles by hand is hard lel

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Also I just realized I can't do it this way, the ends of the pads need to be at the same place

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Back to the drawing board and since it's scalable I'll just do a small version

wary herald Sep 13, 2021, 5:22 AM

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quartz wren Anyways still procrastinating learning kicad for some reason

LOL - me too

quartz wren Sep 13, 2021, 7:25 AM

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Heh

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Thought of a name I probably won't use for my console but I think is really funny

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"PicoX" pronounced like "peacocks"

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But like a portmanteau of "Pico" and "box"

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Actually though... Is there a game console named Pixie?

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If not I'm totally naming my console Pixie

dapper hatch Sep 13, 2021, 8:47 AM

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My happy place. 🙂 All powered by an Asus P50 with 4800U 64gig ram 2.5TB storage. Best PC ever 😉

delicate stream Sep 13, 2021, 10:48 AM

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I like the little screens XD I'd explode that thing tho

real falcon Sep 13, 2021, 10:49 AM

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i tried my montiors in tall mode

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nah dont work for me lol

delicate stream Sep 13, 2021, 10:56 AM

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I have one portrait for system monitors and stuff

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So I looked at the actual power draw of a SHARP memory display and geeze they're basically "free" for power cost

jovial path Sep 13, 2021, 1:25 PM

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I love this bird.

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It's so good the sound he makes when you wake up in the morning.

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It's called bem-te-vi

late fulcrum Sep 13, 2021, 1:58 PM

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quartz wren Kinda got bored drawing partway through but this is kind of my vision for the un...

Like a Schmartboard?

202_0011_01_Big__15246.1435855470.1280.1280.jpg

thick wind Sep 13, 2021, 2:04 PM

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What the heck is that numbering though

delicate stream Sep 13, 2021, 2:07 PM

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Chaos

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https://tenor.com/view/chaos-fire-gif-19254681

Tenor

jovial path Sep 13, 2021, 2:24 PM

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I wonder what is the algorithm for car plates here in Brazil.

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WhatsApp_Image_2021-09-13_at_10.56.23.jpeg

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my new (Up! 2015) car ends with 29 in the plate number.

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one of the brazillian documments have an math equation to generate it, I studied this on high school, but my father told me for cars here it was random or something like this, random but in order.

late fulcrum Sep 13, 2021, 2:39 PM

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"random" and "in order" generally mean two different things, aside from pseudo-random generator functions, which produce the same scrambled order every time, if their initial conditions are the same. There can also be shuffling algorithms that will select entries only once each from a starting set in any order.

tardy badger Sep 13, 2021, 2:41 PM

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The good thing is nothing is truly random 🙂

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Only chaotic

wooden schooner Sep 13, 2021, 2:45 PM

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Oho looks like we got a determinist on our hands 👐

crystal ore Sep 13, 2021, 2:47 PM

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tardy badger The good thing is nothing is truly random 🙂

Quantum mechanics might have something to say about that. 😉

tardy badger Sep 13, 2021, 2:49 PM

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True, but we can still mostly predict quantum outcomes

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It’s the only truly random thing we can observe

dusty citrus Sep 13, 2021, 2:52 PM

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What reflow station do you guys recommend for SOIC8?

late fulcrum Sep 13, 2021, 2:53 PM

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I've had good luck with hot air and even a fine tipped iron.

thick wind Sep 13, 2021, 3:11 PM

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Flux is very helpful for preventing pins from bridging.

subtle fable Sep 13, 2021, 3:36 PM

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Tempted to buy some nixie tubes and make a clock knowing full well I can’t afford to right now

late fulcrum Sep 13, 2021, 4:28 PM

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I've built a variety of things from nixies, but never a clock

subtle fable Sep 13, 2021, 4:34 PM

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I really want to make a bulky wristwatch like in metro

quartz wren Sep 13, 2021, 4:43 PM

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https://cdn.discordapp.com/attachments/642792228473012237/887014900277313616/unknown.png

quartz wren Sep 13, 2021, 5:16 PM

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late fulcrum Like a Schmartboard?

Apparently a lot like that, want it to accommodate BQFP-100 so I can use my dev board for the 386sx mobo too

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But like imagine that tiled across a mini ITX form factor board

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Also I uh

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Seem to have settled on almost that same pattern too haha

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(scaled up with regard to number of pins of course and then scale the pitch by half for the other side of the board)

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And then in the gaps of the plus shape, do smaller versions of the breakout and in those gaps smaller still until you've filled the remaining space

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And since I came up with this design from scratch nobody can say I was copying lol

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I mean they can, falsely

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The densely packed dot pattern is 2 interleaved 0.1" pitch prototyping grids

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(this is the 0.05" SMD pitch variant, other side will have 0.025" pitch)

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And break out to the same pins

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Probably going to stick a 100 pin package on one side and a 50 pin package on the other for the spot meant to accommodate a 386sx in BQFP

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Just so I don't need to take up twice the board space to make a double size 100 pin version on the other side

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Started learning kicad last night, seems pretty easy actually

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Didn't even look at any tutorials just kinda started going for it

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Package editor is much easier to intuit

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Than eagle's

quartz wren Sep 13, 2021, 6:00 PM

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I think I figured out how to do this design in kicad, was struggling with the interface a bit but I think I worked it out

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I have to make the largest chip pad I'll be using, then draw graphical lines overlapping each pad extending inward where they need to go, then do a conversion to pads with both the lines and existing pads connected

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Turns out BQFP is not a standard default for kicad so I have to manually accommodate the bumpers using offsets

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But I want the prototype board to be flexible enough to accommodate my 386 mobo as well as Pixie

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Yes I've settled on Pixie as the game console name

late fulcrum Sep 13, 2021, 6:18 PM

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You should add a pixie tube as a decoration then

quartz wren Sep 13, 2021, 6:19 PM

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Will that fit in a mini ITX case?

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(the form factor I'm conforming to)

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Oh also I need input from as many tinkerers as possible

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If you were to be in the market for a prototyping board that allows you to make bespoke mini ITX motherboards, what all connectors would you want in the IO bay?

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Trying to be as broad spectrum as I possibly can be with the design so more people might find it useful

weary fiber Sep 13, 2021, 6:22 PM

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quartz wren If you were to be in the market for a prototyping board that allows you to make ...

Honestly, just hella USB 3 and maybe wifi connections

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the whole 5.1 audio stuff is pretty gimmicky and nobody uses it-- the people who do use it would probably prefer an actual sound card (or more commonly, a usb DAC)

quartz wren Sep 13, 2021, 6:23 PM

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I can accommodate ports for USB 3 but I'm not actually doing any chip layouts for this board just ports and generic prototyping pads

weary fiber Sep 13, 2021, 6:24 PM

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is USB not a port? I'm confused

quartz wren Sep 13, 2021, 6:24 PM

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It is but USB3 is a standard that requires specific device support so I'm just putting that out there

weary fiber Sep 13, 2021, 6:25 PM

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oh, you're overestimating how specific I'm being

quartz wren Sep 13, 2021, 6:25 PM

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Ah well, wifi can be accomplished with an ESP8266 module but if you need something better there will be plenty of prototyping space to add it

weary fiber Sep 13, 2021, 6:26 PM

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ANYWAYS

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my recommendation stands