have fun!
#general-chat
zealous ermine
that .zip has all the parts, schematics, and some asm code
as well as a few flow charts and block diagrams
sick adder
If you spend enough time thinking about command names, you will discover with delight that it is technically possible to name your command 🐥_Tool. Please don't. https://smallstep.com/blog/the-poetics-of-cli-command-names/
zealous ermine
also, the reason i'm designing this CPU is for a senior project in HS. i was talking about it, and my freshmen engineering professor (now retired) told me i couldn't do it, and i would be wasting my time. this entire project 3+ years now is just to spite him,,,,,,,,, and mad bragging rights ;)
late fulcrum
I'm amused how the "Poetics of CLI" gave "Ikea" as an example of something that's pronounced the same way around the world. Most of the people in the US pronounce it "eye KEY ah", but the creator of the company pronounces it differently as "ee KAY ah".
small hull
The creator of the company also had certain controversial political ideas 😄
covert spire
I has question for community moderators
stray wind
@covert spire Can you ask here or do you need to DM?
covert spire
I think here is fine, it's not too personal
Just wondering if I can post link for making stuff on twitch
stray wind
Sure, as long as it's topical and follows the Code of Conduct, you can post it. I don't think Twitch links are blocked by the bot... (We had to lock down a number of things recently.)
covert spire
Yea, I seen about lockdown on stuff, so I was wondering, thanks! 😄
short pulsar
Wonder if Lars is microwaveable. https://www.mentalfloss.com/article/625615/de-stress-microwavable-hugging-sloth-plush
willow ruin
Below: the victim of an unfortunate soldering mishap. (Eg the tip got too close to some SMD components)
Above: it’s replacement, which hopefully won’t suffer the same fate.
sinful lark
Do you think solder wick could solve that?
zealous ermine
^^^
late fulcrum
That, or a solder sucker should help.
sinful lark
I was just watching a video about mass producing crickets for food, and I saw an Adafruit board during the part about the R&D lab.
willow ruin
Do you think solder wick could solve that?
@sinful lark Unfortunately no. It’s not that there is excess solder, but rather I seemed to have accidentally de-soldered and knocked several components out of place. (The button fell off, and it’s not showing up at all on the computer anymore) I’m still learning how to throw-hole solder, do repairing this kind of SMD mishap is out of my league. Oh well. The nice thing about these MakerDiary dongles is that they’re cheap.
sinful lark
yikes
willow ruin
And now I’m thinking it may be third times the charm.... I’m getting continuity between 5V and GND. I cleaned out the solder between them though. My multimeter alone wouldn’t blow it, right? Am I missing something?
nocturne marsh
Hello I am a new member
willow ruin
Hi!
nocturne marsh
hi! how are you?
short bone
hello hellokh
nocturne marsh
hello
dusty citrus
hello
zealous ermine
heads up, i did some modifications to the ALU, IO buffer, and PC, im going to but everything on github later tho.
if anyone downloaded the .zip, its outdated!
signal anchor
Hallo! Just here to get a little curious about some circuit building I am studying and hope to maybe pick up a few tips.
ocean sigil
@signal anchor welcome -- you may also want to checkout out the #help-with-projects channel.
ask questions.
late fulcrum
Like physical damage, from something like driver contention? 😬
zealous ermine
physical damage
2 buffer chips talking on the same bus
i dont even like thinking about it lol
late fulcrum
You could use decoupling resistors to avoid damage at least during the debugging phase (I've seen this done in a few places).
I like to format big printouts like that with something that makes it easier to distinguish between the 1 and 0 symbols. Maybe something like _ and X
late fulcrum
This is an impressive project, I'm enjoying seeing what you're coming up with.
The Timex-Sinclair ZX-81 computer, a commercial product, used 470Ω resistors between the CPU/ULA bus and the RAM/ROM bus to avoid damage in the case of bus contention.
zealous ermine
thats cool!
i would never imagine a home computer doing that
but i mean, the poke command existed, and that can cause problems i guess
late fulcrum
For reference. The timing could get tight during things like DMA operations.
zealous ermine
true true
zealous ermine
Here it is!
this is version 1. their are going to be errors, and the fact that i finished it at 12:48AM might not help much lol
i'll go into more detail tomorrow. long story short, it controls all internal actions the cpu can do, like moving around, and math stuff
once i get a minipro eeprom flasher, im going to convert it into hex files to program at28c16s
polar bloom
Are there emulators you could use for this sort of thing, i.e. to verify your microcode is mostly bug free and detect issues such as bus contention?
zealous ermine
Im working on a hardware emeulator using an arduino mega
Hardware so i can interface a memory controller with it and have it run code from rom
late fulcrum
Someone was doing a similar approach with a Z80, using an Arduino to feed it data. There's also Ben Eater's approach of using an Arduino as a (sort of) smart bus analyzer.
orchid zephyr
Morse code is enraging. If they had Hoffman tables back then, most characters would be shorter, and they wouldn’t need any breaks in between characters, making word breaks make way more sense.
orchid zephyr
And yes, I did make a new version of Morse code with Hoffman tables.
zealous ermine
well..... i don't think it's morse code anymore lol
orchid zephyr
Yeeeeahhhh.......
dusty citrus
here is early build 2 of a rewrite of blackbox ( a project I've been workin on )
judge my c++ lmao
real falcon
might need glasses if you tried to read orginal.
orchid zephyr
@sinful lark it’s actually high res as f||iretruc||k. Just zoom in.
covert spire
I had no problem reading it, but I know so little about C++, I'm useless in helping ya, lol
zealous ermine
It looks good!
warm pier
Weekly task tracker project that I made a while back with some Adafruit LED arcade buttons and an Arduino https://simonprickett.dev/building-a-task-tracker-with-arduino-and-led-arcade-buttons/
umbral phoenix
The curvature of the phone's front glass was not a design feature.
proven olive
There's a Twitter feed called 'Cats with threatening auras'
Maybe a tech one could be started with 'Batteries with threatening auras' and this would be a good start
hasty quarry
I wonder what happens if you rupture that big tendon behind your foot
Looks really important
Don’t know what it’s called
Ah, it’s called the Achilles
hazy inlet
@umbral phoenix scary
grave crest
Anyone in Northern NJ recommend a repair shop for Macbook battery replacements? I'm reaching out to NYC's rossman repair group, but working with swollen lithium ion batteries is where I draw the line on self-repair bravery.
dark gorge
Hey is anyone interested in collab? I am not an expert and maybe not an intermidiate too but i have my hands on multiple things i can do pretty well including gui and python. Please text if you are interested. By the way I created this website (electrogeeks.org) to post about things we work on so text me so that we can colab. Thanks.
jovial swift
@grave crest Sorry, no help here. My wife's MAC "went stupid" and the local Apple help in Paramus diagnosed a "bad motherboard". I opened it up, disconnected the battery for a minute, plugged it back in and she's been using it for over a year now.
hasty quarry
Lmao
I wonder if Apple’s programmed obsolescence is written in some kind of ToS you have to agree to
Anyone know?
radiant forge
what are some characters from anime i could cosplay and add technical aspects to
like edward's automail blade
hasty quarry
I see your pfp
radiant forge
yeah
hasty quarry
Von Stroheim, lol
radiant forge
nice
hasty quarry
That’s a lot of work
radiant forge
but i don't think anyone would appreciate a gun coming out of my stomach at cons or anything
hasty quarry
Well, before he really let himself go
radiant forge
maybe the massive lights but i dont think my shoulders can support that weight
radiant forge
yeah it was
or maybe i could cosplay a skyrim character
but how would i stuff tech into it
hasty quarry
Last of Us 2 character
radiant forge
if i can shout
hasty quarry
Hmmmm
radiant forge
lemme browse through my games
hasty quarry
If you did Skyrim, invent the telepathic technology your character always uses to communicate
hasty quarry
I always found that a little creepy
radiant forge
same
lemme look through my steam library
there's dont starve
but i cant stuff tech into it
i could have tf2 items make the noises
but i main heavy and use the tomislav
radiant forge
what are some of the T-45 power armor's abilites i can recreate with tech?
orchid zephyr
Stupid question, but is capacitance a property of electric dipoles(because the dielectric is polarized), or electric monopoles (because that’s how charge is)?
late fulcrum
Unsure of your use of "dipole" and "monopole", but you can do the experiment by building a capacitor, taking it apart, putting it back together, and seeing if it still has charge on it.
orchid zephyr
Like if there is an imbalance between the electric field
short bone
electric field is caused by imbalance of charges between the electrodes
modern phoenix
Guys, if you don't mind i would like to share my little project. Thank you
keen mortar
Don't crowdfund m8
That's bad
Crowdsource, that's better.
Money is good but it won't have a 100% conversion into work
You can implement both if you want
sinful lark
I swear, I always confuse the Polish and Indonesian flags.
hasty quarry
My dad just showed me Back to The Future
I wasn't expecting to watch an absolute gem
That was a fantastic movie
late fulcrum
I've done Back to the Future cosplay
hasty quarry
Hahaha, where'd you get the FC?
late fulcrum
Built it myself!
hasty quarry
Dang
Did you even have one of those weird little...tape writing things for the text
I'm too young
late fulcrum
I was shopping at a container store and saw these metal boxes with a clear window on top and realized they'd be great flux capacitor enclosures, so I bought one. Then I challenged myself to build it in a day.
It lights up, too
I picked up a label maker at a thrift store for a few bucks just to make the labels for it.
late fulcrum
No, that's John Barrowman: totally the wrong fandom
hasty quarry
Hm
grave crest
Time travelers don't care what powers the time machine 😉
spice harness
@late fulcrum Nicely made!
how did you made the connectors and the wires?
any behind the scenes images?
rain ferry
Hey that's funny I just say Back to the Future earlier this week
late fulcrum
I bought an ignition wire set for a motorcycle and cut it up. I did take some stills from the build process and make a short movie. https://www.facebook.com/john.rehwinkel/videos/10152366645907864/
sinful lark
I love when my 3D printer stops working and it automagically works after I spent all day trying to fix the problem.
late fulcrum
Yeah, he was in Torchwood, Doctor Who, stuff like that.
orchid zephyr
Robert Zemeckis is a genius.
old steppe
sinful lark
^ Great ol' Rick-roll ^
covert spire
Isaw rickroll before clicking on it, lol
short bone
I have only memorized the most used link that ends with XcQ
fickle forum
did you guys know that alcohol suppreses the toxicity of paracetamol, in non-alcoholics?
well you do now
late fulcrum
@dusty citrus Normally I attribute keyboard issues to a loose connection, but it could also be flexing due to a swollen battery.
burnt tendon
Cursed image: https://i.imgur.com/aAFqmw7.jpg
nimble ice
....... I feel the same way with the stock image of the girl with the soldering iron or the guy with the hot air reword station as I do about the image above..
nimble ice
wheat peak
i don't have anything to say to that
the first one is something i've always wanted to do
the second one
i've done
on accident
(only for a second though)
nimble ice
there is one where a guy is doing the same thing with a hot air rework station, in both pictures the more you look at the entire picture the worse they get...
like in this one, she is using a soldering iron by holding the hot part while working on the wrong side of the board for a soldering iron, in a chemistry lab
no vent hood, with safety glasses on but no gloves
dawn thistle
dusty citrus
The entire point of 'the premium brand' is you get predictable quality in exchange for the extra cost.
Some markets have strong brands that don't map to high quality in the same way.
There's at least one consumer bicycle brand that I just wouldn't bother with, but the name's been around for decades.
I ride probably 400 to 800 miles annually; there's a statistic suggesting many new bikes are ridden < 50 miles.
late fulcrum
Truth. Some "premium" brands are more premium than others. I think bicycles are like telescopes, people enthuse about them and then lose interest.
polar wraith
I'm glad I'm a telescope outlier. 😉
wheat peak
i noticed that my schematic looked like a face
so i made a face
(it's hard drawing with a mouse)
sick adder
Generating something that uses curly braces to set off templates (jekyll / liquid) using something that uses curly braces to set off templates (cookiecutter / jinja) works about as well as you'd expect. eew.
umbral phoenix
⎨ {｛｝} ⎬
⎝ ⎠```pretty much
nimble ice
I have been too poor to be picky with my solder and flux.... and most other things XD. just got a new job though so hopefully that changes now
sinful cosmos
hardhatbrigade is live https://www.twitch.tv/HardHatBrigade -- Adding hardware to hard hats
spice moss
i guess i need to design weather station with radiation counter
sinful lark
Are you thinking a geiger counter, or solid-state?
nimble ice
Why esp gotta do me like this :( I'm too tired, I think i spent a while trying to fix my led strip light wonkyness when its something to do with esp32's having shifty PWM pins
young kiln
quiero invitarlos a ver el envivo del dia de hoy de Red Internacional Maker, donde vamos a dar a conocer los proyectos y soluciones que se generaron y se siguen generando a nivel internacional como respuesta al covid 19
https://www.youtube.com/watch?v=zl-7wOJA_Xg
Les agradeceria que lo compartieran
balmy rivet
Did Instructables get rid of its Pro membership? The goPro page doesn't go anywhere anymore (404 error). https://www.instructables.com/account/gopro
zealous ermine
My digital logic trainer has broke
Progress on the CPU has been paused
:(
I ordered a new trainer tho, so when it arrives, things will get back in action
Its still a disappointment for me, and people interested in the project
late fulcrum
Is the trainer repairable?
orchid zephyr
If you are doing electrical soldering, then I don’t see any reason that people still buy solid core solder and tins of flux. Why don’t people only buy resin core?
burnt tendon
Maybe that kind of solder just doesn't resin-ate with them.
But.. um, probably for all sorts of extra-credit soldering work.
burnt tendon
e.g. Solid blocks of solder for solder pots and wave soldering, separate flux for when you are doing rework or SMT.
dusty citrus
hi
dusty citrus
hi
sick adder
document defines what the "tickle packet" is, but notes that the device may not depend on it being sent by the host https://www.usb.org/sites/default/files/CDC_EEM10.pdf
zealous ermine
I don't think the kit is repairable
late fulcrum
Erf, why not? Surface mount parts?
gritty lantern
late fulcrum
Cracked PCB? How did that happen? It is possible to fix those, by bridging cracked traces with wire. Power supplies vary from pretty simple to fairly intricate.
sick adder
TFW you notice your backups weren't backing up important stuff
thankfully it was NOT just after deleting something important
hasty quarry
I want some valid reasons shoved in my face as to why we're still using paper so, so much
I got my first job a while back, and I had to do a bunch of paper work. A W4, a bunch of waivers, etc.
But, I wonder, if these people take the information you write only to input it into a database, why the paper?
Why not a website, where the back-end can take care of archiving far faster and more efficiently than any human with a metal cabinet?
The only true reason I see is the value and uniqueness of someone's signature on paper. But why do these sheets ask for phone numbers, email addresses, etc.?
umbral phoenix
Two more reasons: it's risky to scrap and start over on complex processes that have been evolved and proven over time; paper is very auditable.
As far as your last question... too much information is asked for in most contexts, and it's rare for the user / form-filler to understand why each piece of information is needed or wanted. In the US there are laws that govern information collection (edit: by government). But when companies are asking, it's really hard to know. Best defense is to leave stuff blank whenever practical, or put bogus (or alternate) info in fields that aren't relevant.
umbral phoenix
All depends on context.
hasty quarry
What's auditability?
umbral phoenix
I really don't mind lying to companies that I already know abuse my trust.
Auditability: Being able to go back later and examine and trace the "paper" trail (whether analog or digital). Sure, paper is forgeable, but that's a lot of work. OTOH, we all know how fallible software is. Or worse: software that intentionally corrupts the process.
hasty quarry
I see
mighty raven
@sick adder I don't know if I can talk about it now, given that I don't know too much about the subject.
sick adder
hehe it's fine, we can talk about it some other time when you feel like it
mighty raven
Well, perhaps you can point me to some web sites that are worth checking out.
I wanted to work on aluminium, so a router wouldn't cut it (pun intended).
sick adder
linuxcnc doesn't have a very active community at the moment, so I don't have a lot past our main web page https://linuxcnc.org and the forum, https://forum.linuxcnc.org
mighty raven
At one point I also tried to mill my PCBs, but the fact of the matter is that PCBs have become so cheap that it is not worth the trouble.
On the other hand, small metal jobs are hard to get done.
sick adder
indeed. Between that, and being pretty awful at wiring electronics, and the fact that my interest in all those things was at a low, it made sense to get rid of my machine
mighty raven
Any clue, why linuxcnc has become dormant?
sick adder
Oh, how long do you have? 😛
sick adder
I think it never really found its niche, there was a divisive fork that demotivated people, and solutions that run on microcontrollers like grbl and whatever the popular 3D printer firmwares are a lot easier to get going
mighty raven
Actually, if one still wants to make one's own PCB, there are decent machines for that. Voltera, or whatever that is called.
sick adder
LinuxCNC always wanted to be something that would install on anything from a hobbyist's desktop mill to retrofitting an industrial CNC, it was a very broad concept
mighty raven
That's hard.
sick adder
for many years it required very esoteric kernel pactches, so developing a ready to go distribution took a huge fraction of all the development resources
mighty raven
So it was really hardware hacking, right? Because the concept itself is not very difficult.
sick adder
and now many of the technologies in it are outdated (gtk2, python2, tcl/tk, etc) which is another burden for maintaining and enhancing it
actually someone did solve 98% of the python2 problems this year, which is awesome
mighty raven
What is the difference, compared to 3D printing? In terms of software difficulties.
sick adder
In the US there have been at least 3 companies over the years that sold machines that either had linuxcnc preinstalled or as an easy to add option, but I'm not sure what the status quo is today
mighty raven
In other words, why could 3D printing take off, with quite a few software options, and why has linuxcnc failed?
sick adder
It's a good question
late fulcrum
I do remember fighting timing problems and for a while, the popular solution was to use an FPGA card that would take care of the timing while LinuxCNC told it what to do, but that was (again) a tweaky and esoteric (and expensive) solution, and was dangerously close to just generating GCode and handing it off to another processor.
sick adder
I think 3D printing had much broader interest since it was seen as a new field that people were inventing
late fulcrum
3D printing solidified the "run your GCode on a separate dedicated CPU" model and provided solid, cheap, well-documented hardware for doing exactly that, which was an additional death knell for LinuxCNC.
sick adder
CNC is an established field, at least industrially, so it wasn't exciting to work on and pioneer.
mighty raven
I think, cheap was the key word.
sick adder
Plus, nobody really likes having the chips from 3d milling around in their garage, let alone their homes
3D printers can be cheap because 3D printing doesn't require rigidity against cutting forces
The FPGA cards that madbodger refers to are pretty fancy pieces of engineering and I actually still do some work for mesanet, one of the two lines of cards that linuxcnc has good support for.
Those cards really come into their own when you want to control things that are NOT just step & direction pulses, when you want to measure the positions of the motors via encoders, resolvers, etc.
late fulcrum
My CNC machine is a Sherline tabletop mill, retrofitted with steppers, with a Quadstepper driver driven by an Arduino Mega running GRBL. Thinking of replacing that Quadstepper + Mega with one of the Big Tree Labs all-in-one controller boards intended for 3D printers.
mighty raven
That's actually true: 3D printers don't usually have encoders.
spice harness
@late fulcrum why not linux cnc?
sick adder
I'd probably learn lost PLA casting before I'd try to mill metal parts again 😛
mighty raven
Encoders, that is.
late fulcrum
I seriously considered it, multiple times, but the barrier to entry was always pretty high so I opted for other solutions.
mighty raven
Well, Jeff, thanks for the enlightening discussion. @late fulcrum thanks for chipping in!
sick adder
Making something be a desktop PC and a precision 40kHz, 6 channel signal generator at the same time is pretty cool but ultimately I'm not sure it's the best way to go for a simple machine like the Sherline that @late fulcrum mentions
late fulcrum
That is the conclusion I reached too: if I were controlling a fancy Bridgeport mill, LinuxCNC would have been a much more appropriate option.
sick adder
but anyway I had fun being a linuxcnc developer and I still have some great friends from those years so that can be mission accomplished for Free Software
(and heck I'm still doing it today even though it's not out of a belief that world domination is around the corner 🙂)
late fulcrum
I do still kind of want one of those Mesanet cards, just because they're so cool.
sick adder
Some of them have SPI interfaces, I just want to find the time to write a CircuitPython library to interface, and then something cool is bound to be possible
(In this case I imagine the MESA card functioning as an SPI peripheral; they can be SPI hosts as well)
mighty raven
I've got to go soon.
sick adder
Thanks for chatting @mighty raven and letting me reminisce
mighty raven
It was a pleasure! 👋
spice harness
@late fulcrum what are you making with it?
late fulcrum
Brackets, art, cosplay pieces, etc.
spice harness
COOL! we need to make a #machining channel here
ocean sigil
FYI -- 15 minutes to launch https://www.spacex.com/launches/index.html
late fulcrum
Thanks! I had forgotten!
late fulcrum
It's a monster
ocean sigil
Amazing!
late fulcrum
Those grid fins are one of the most expensive parts in the first stage
jovial swift
nailed it again!
sick adder
now entering the informercial segment of the launch
grave crest
I'm not watching due to work, but I dunno who's the target market for the liquid oxygen propellant ads 🚀
late fulcrum
Alas, people got wise to the cheap cryocoolers on eBay and now they're expensive
sleek quarry
time to add GLONASS, Galileo/GNSS and BeiDou 🛰️
spice harness
@sleek quarry sure, but where do I pick the laser cutter from you??
late fulcrum
Harpers Ferry?
burnt tendon
Breadboards rule: https://hackaday.com/2020/07/01/breadboard-breaks-the-speed-barrier/
jovial swift
Why did you do that? "To prove it could be done" - amazing speed on a grid of capacitors...
hasty quarry
Can soil literally expire?
Like, just, stop working
If you grow a plant in the same bunch of soil without erosion of any form, as a closed system, and break that plant over and over
Won't it keep using carbon, nitrogen, etc. from the soil to fix itself? Won't the soil eventually just....become useless?
(Assume that you don't put the parts you break off the plant back in the soil. Assume they leave the system)
umbral phoenix
Probably depends on the plant, and what's in your water, but yeah I think typically the plant would deplete the nutrients in the soil. That's why crops get rotated... corn for a few years, then soybeans, for example.
sleek quarry
crop rotation is something that is done, atleast near my home village
one year they were growing hemp/weed for oils, last year oil seeds and this yea a lot of beans
so its nice to see it in action and not just "here we grow X and just throw fertiliser at it until soil completely ruined"
hasty quarry
But I do wonder why
Does the work a certain plant does on soil make good conditions for another plant? And then that plant’s work leaves good conditions for the next plant?
burnt tendon
So, when I was in college, I'd routinely walk by this: https://en.wikipedia.org/wiki/Morrow_Plots
There's a lot going on with nitrogen fixing bacteria and organic waste and stuff.
sleek quarry
^^ like beans and peas
burnt tendon
Maybe it helps to think about things such that plants have had millions of years of evolution to figure out how to survive, using competition sometimes and cooperation other times, so much so that they evolved these weird hairless ape things to tend to them all nice and stuff.
late fulcrum
They're not above bribery, using nectar to encourage pollinators to ferry pollen around, and fruit to encourage animals to carry seeds around.
burnt tendon
Yeah, but sometimes they screw it up, like making chemicals to discourage mammals to eat their fruit but attract birds, and hairless monkeys decide that the burn is actually really fun.
idle iron
i got a project idea looking for "speech to text", then encrypt and broadcast from host hardware.... client hardware receive broadcast, decrypt and display as text @late fulcrum do you have any suggestions? encrypt and decrypt ill handle myself for security reasons
late fulcrum
You can do speech to text locally with dedicated hardware, or machine learning, or you can use the cloud: IBM and Google both offer nice online speech to text you can access with a REST call.
gilded flower
Found this xkcd comic online (read the actual text)
jovial swift
the vacuum pin is handy to affix projectors to the ceiling
gilded flower
I also find the 120 volt usb c pin to be helpful
burnt tendon
I find it.... revolting.
gilded flower
Whenever you delete a file it becomes anti data
dusty citrus
for reverse engineering
sick adder
yes, really (Si5328)
hasty quarry
I don’t understand this
I play a game that requires rather persistent and fast clicking of my mouse
And I’ve played that for a long time
But for the past few days, my finger is in a new kind of pain I’ve never felt before
The tip of my index finger
It hurts so, so much
I feel like, muscular irritation inside my finger
Something’s definitely not right here
balmy mauve
dusty citrus
@hasty quarry repetitive strain injury.
zealous ermine
i started designing a port of pong for my CPU
its real weird programming in straight assembly
i need to be really efficient, because i have just about 1k ish to work with!
i need to cram all the game logic, RNG, and graphics code in it
(also, the graphics card is my old HP oscilloscope!) i designed a TTL gpu fot the computer
for*
covert spire
@balmy mauve It's not matter of location, it's a matter of lack of concern for history. Museums are getting fewer visitors & donations due to not teaching honest real history anymore. And just issues other places.
ocean sigil
@forest ore @zealous ermine thanks!
zealous ermine
No problem :)
ocean sigil
If you see something like that -- please tag the communtiy moderators
nova pebble
sick adder
My 3d print has a face (part of an enclosure for a webcam)
spice harness
@sick adder I'm very surprising to see that
zealous ermine
pog!
sick adder
My friend's going to be in a Hack Chat! https://hackaday.com/2020/07/06/linux-in-the-machine-shop-hack-chat/ @spice harness @mighty raven @late fulcrum perhaps of interest to you given our recent discussion of linuxcnc
orchid zephyr
I found my friend defragging an ssd. I mean, you can move around the blocks to make them more in order, but it doesn’t really help. Also, WEAR
zealous ermine
I would buy it
gilded flower
So would I
polar wraith
Raspberry Pi 4 4GB running 64-bit beta, 250GB SSD, ICE Tower cooling, and the new Raspberry Pi HD Camera with wide angle lens... and you get a tolerably beautiful sunrise.
vital wasp
I'm looking forward to that LinuxCNC chat. Its a topic thats about half way down my project list.
sick adder
@polar wraith lovely! thanks for sharing
@mighty raven so apparently you shouldn't mention so many people at once
mighty raven
My friend's going to be in a Hack Chat! https://hackaday.com/2020/07/06/linux-in-the-machine-shop-hack-chat/
@sick adder Thanks, Jeff! I hope the message gets through now. It has been rejected by the bot quite a few times.
sick adder
I unmuted you, but I guess it's better to either omit quoting the original message or trim the mentions, as you now did
mighty raven
@mighty raven so apparently you shouldn't mention so many people at once
@sick adder Yeah, you hit the nail on the head.
sick adder
sorry about that, with the spammer problem we have had to enable some automoderation items.
spice harness
cool to see more machinists here!
mighty raven
@sick adder That's fine. I just have to learn the new rules.
sick adder
I am having a LOT of fun with "AI Dungeon". Sometimes it takes weird nonsense turns, but other times it presents a convincing illusion of telling a story with you. I wrote the bold, it followed with the part in italics.
A few hours later, supplies gathered, you are on the road. On your left, the south river flows towards the inland sea. Birds shun the river, though the air above is teeming with insects. No one would be fool enough to draw water from it for cooking or bathing, even if they'd never heard the stories. _On the right, the North river flows towards the vast, frozen plains. Nothing but endless snow and ice for hundreds of miles around. Still, there are rumors of ancient cities hidden under the frozen tundra.
I find it particularly neat that it did left/right and north/south, it's almost like it's paying attention.
You open your eyes slightly, just enough to see what direction the wind is blowing from.
well that totally makes sense
spice harness
Who ever designed the Ada fruit logos - You Did A Fantastic JOB!!
orchid zephyr
^^^
ocean sigil
FYI -- 35 minutes until launch -- https://www.spacex.com/launches/
ocean sigil
scrubbed...
late fulcrum
Since I have back to back meetings for the next 3 hours, I'm okay with that 😕
covert spire
I got the day off, so I'm not 😳
ocean sigil
Imagine that -- thunderstorms in Florida in the Summer...
late fulcrum
Ah, I miss those (I grew up on the space coast)
covert spire
Thunderstorm season is only 365 days a year
Bummer part is, caught back up on Dr Stone manga, so I'm pumped for it
grave crest
Lightning and liquid oxygen don't mix.
ocean sigil
I worked on a mission a few years ago -- August launch -- took 5 tries -- over a span of two weeks -- equipment, thunderstorms, hurricane threat (had to roll back to VAB)... agonizing.
got to within 5 min of launch each time.
spice harness
@grave crest they mix very well
covert spire
Ouch, I mean, they have to, just my luck the day I get off is same say a thunderstorm rolls in
dusty citrus
FYI -- 35 minutes until launch -- https://www.spacex.com/launches/
@ocean sigil I didn't know they were launching a rocket today, but thanks for the info! I think I'll watch it
covert spire
Which means I'll prob be on 12 hr shift when they finally get a launch
ocean sigil
@dusty citrus cancelled for today -- have not seen the reschedule yet
dusty citrus
Oh, I see. Thanks!!
sick adder
TFW you just placed an adafruit order 2 hours ago, and then you get a back-in-stock notification
late fulcrum
That's perfect, because in a couple of hours, I realize I want another power supply, a USB hub, some standoffs, and some snap connectors.
lapis bluff
Or what happened to me. I got the back in stock notification, put that in the cart and started assembling the other pieces, when I was finally ready, I went to the shopping cart, and the original part is now out of stock... Oh well, I put another notify me on the part, if I just leave the cart as is, I can pull the trigger immediately.
late fulcrum
Ouch. That's annoying.
hasty quarry
If you had a solution made completely of virus, would it be an oil?
late fulcrum
I'm guessing it would either crystallize out (this has been done with several viruses) or perhaps form some sort of colloid.
hasty quarry
Hm
late fulcrum
Crystallizing viruses was an important step in elucidating their structure, as the crystals could then be analyzed with X-ray crystallography to work out the 3D arrangement of the molecules (a difficult and time consuming process, but provided invaluable insights)
orchid zephyr
viruses are a pretty robust mix of molecules tho.
late fulcrum
Depends on the virus, some of them are pretty fragile.
dusty citrus
i'm done being negative in life.
Time to build the ar interface i always dreamt of.
So now that Vulcan runs on the pi.
and i have studied both barebone code for the pi and the k210
i am ready to build the future.
mental ocean
my codeing to stop rain
orchid zephyr
If the next message says
MCreator
Bruh
I get new batteries for my calculator
orchid zephyr
/gamerule doWeatherCycle false is easier
dusty citrus
Is that scratch
neon wadi
Could someone recommend me a site/kit that has lots of resistors and caps
umbral phoenix
@dusty citrus VPNs providers require an immense degree of trust from their users. "Free" isn't usually free. I don't see any posts from you other than offering this VPN. Is there publicly available information on the VPN provider, reviews by reputable tech news outlets, or audits of its policies and practices?
hasty quarry
@orchid zephyr NOOOOOOOOO
@mental ocean Also, yeah, there’s....literally a command for not letting the world rain
shadow zephyr
Today, en route to my holiday destination, I found out that code is real, and that one can exit from loop without stopping the holiday program ; )
pliant herald
just keep an eye out...."for and next" may be around the corner....
shadow zephyr
Lol... I'm looking for delay or while right now to extend my holiday : )
grave crest
Adafruit products in the field. Surprisingly comfortable, even given the heat and humidity.
Surgical mask: https://www.adafruit.com/product/4586
Bucket hat: https://www.adafruit.com/product/4583
dusty citrus
They extended the Covid lockdown till aug 15.
Masks now cost over 40 times the normal price
Food prices doubled.
Jobs have literally come to a stand still.
😢 i am gona be thrown out of my place.
late fulcrum
Most areas with lockdown have rent/mortgage relief or protection so people who can't work don't get thrown out.
real falcon
that sucks. 😦
hasty quarry
I'm a bit scared
I started feeling fatigued and nauseous today, with a slight feeling of pressure on my chest a few minutes ago. Difficulty breathing, and rapid heart
No throat inflammation or fever, though
I'm just sorta beginning to "not feel well"
late fulcrum
Scary stuff: with no fever, it may well not be COVID, but it still could be something serious. If your doctor offers telephone consultation, it might be worth a call.
real falcon
chest dont sound good, even if it isn't covid. see a doctor.'
I mean it, go see doctor now. don't delay.
gilded flower
I just got a weird idea what if a machine learning program could identify what clouds look like using there outlines. Is this possible?
late fulcrum
That's actually one of the Qwiklabs exercises, I think, so yes.
spice harness
late fulcrum
Finding that qwiklabs exercise is tricky, as any search for "machine learning" and "cloud" assumes "cloud computing", not "cloud cover" or "cloud type".
velvet pelican
would that be able to detect the cloud type or just the clouds themselves?
late fulcrum
You could train a model to do either one.
velvet pelican
ya know i never thought i would see the day you could "train" a computer
late fulcrum
Hey, I have to play something other than Lego Dimensions sometimes!
velvet pelican
it amazes me the code people can come up with and the concepts that can be made from it
lol half the time i got minecraft runnin
but i dont play it
late fulcrum
I remember training my Atari 800 how to do stuff back in the 1980s. It was slow going, I had no idea the field would take off 20 years later.
late fulcrum
In those days, I just wanted a faster computer. These days, I'm breadboarding an 1802 running at around 10Hz. (or .00000001GHz, if you prefer).
In a sort of "tail wagging the dog" arrangement, I'm using a 16MHz Arduino as a bus analyzer for it.
velvet pelican
im gonna have to learn arduino here soon
for my stepper motor project. loooked at some tutorials on using what was linked to me in general chat and i cant quite get it. but using a controller driver and an arduino with a couple switches and a potentiometer i think i could magane to do what i want to get done and learn a thing or 2 along the way
late fulcrum
Did you get the "Blink" sketch running? That's often a good starting point, and directly useful for your project.
velvet pelican
nope havent started on anything yet.. i have the motors and gearboxes but not chipsets or any of that since ive never messed with any of that
my days with motors are from back when i would take a 9v battery and hook it up to the 2 leads on the motor
so where is this blink sketch found? if i can do anything to speed the process im all ears
late fulcrum
It comes with the Arduino IDE. If you go to the File->Examples->Basics, I think it's the first one.
velvet pelican
ok ill find it and download it. appreaciate the tip
ive looked at a fair few schematics already but im more of a visual watch a video learner at this stage since alot of it is terms that go over my knkowledge
late fulcrum
AdaFruit also offers some useful tutorials like this one https://learn.adafruit.com/lesson-0-getting-started
velvet pelican
perfect
late fulcrum
I'm sure there are some good videos out there too, but I don't have any pointers handy.
velvet pelican
yeah
its pretty hard to find the exactly what i want to know due to the massive volume of what i want to know thats out there in my keywords for my searches
late fulcrum
We're here to help. I remember spending a lot of time trying to find a particular kind of mount to display something but not knowing what it was called.
velvet pelican
ive been there before
if its in a vehicle i can pretty much tell ya everything about it
when it comes to a chipset or the like im no help lol
late fulcrum
We all have our own areas of interest, and we all start out beginners.
late fulcrum
After years of regarding automatic transmissions as black magic, I've started watching videos to learn how they actually work.
velvet pelican
so im hoping the arduino coding should be fairly easy to pick up
ahh the automatics
planetary gears and pressure with some servos to make the gears do different stuff
late fulcrum
I think you'll get the hang of it, and we can answer questions. The "Blink" sketch just turns one output on and off repeatedly to flash an LED. If you hook it to the "step" input of your stepper motor controller, it will cause it to run (although pretty slowly).
I kind of understood planetary gear systems, but it took me a while to learn how clutch packs and bands worked, and how the various fluid channels actuated them.
velvet pelican
yeah i never went that deep into transmissions to learn that far.. like i can repair them and diagnose but i dont fully understand that far into them
get into the engine bay and i can pretty much tell ya whats going on there
late fulcrum
The "Precision Transmission" videos are basically a transmission expert with 40 years of experience tearing then down and rebuilding them, and explaining what's going on. They tend to run about 20 minutes, which is a good length for my attention span.
velvet pelican
or manual trans but thats a pretty basic system
late fulcrum
Engines I have a pretty good grasp of, but (due to what I had to work with) I learned fuel injection before I learned carburetors. 🙂
velvet pelican
is your day to day job making up circuts?
if so i can understand the short attn span lol
tropic radish
every time I see "lol" now I see a tie-fighter. 🙂
velvet pelican
i took circutry in highschool. running the 14 step algebra problems made my head spin(i hate algebra)
tropic radish
What were the algebra problems? Algebra is pretty spiffy. Formulas not as much.
velvet pelican
they were formulas for finding voltages ohms ect across a circut board
all of which i have forgotten at this point in my life because i never used that info
also back then i didnt have a calculator so all of that was done by hand
late fulcrum
My current day job is programming, but my previous one was designing circuits.
velvet pelican
what language are you coding in?
late fulcrum
Mostly XSLT and Python these days, but some C occasionally.
velvet pelican
from what i hear c# is the nicest to program in
python doesnt look too difficult to me either
late fulcrum
I've never looked at that C variant. I looked a little at C++/Wiring, and Objective-C.
velvet pelican
never seen xslt
late fulcrum
XSLT is an XML processing language. It's deeply bizarre but for some reason I found I liked it.
velvet pelican
hey if ya like it why not
my code right now that i use is only minecraft related scripting
late fulcrum
It even got me a job a while back, which indirectly led to my current job.
velvet pelican
but the general concept is the same as any other language
yeah
things that are kinda abstract like that are tough for alot of people so when you got a niche in that field then you become valuble fast
sounds like youve been messing with languages for a while tho
late fulcrum
That would be true. This is the computer I learned on (I still have it), but originally it was just the front board, maxed out with all of 768 bytes of RAM.
In that environment, there are basically two choices of programming language: machine language (not even assembler), and CHIP-8, and I didn't have a CHIP-8 ROM.
velvet pelican
man
you have a good foundation there
if you understand the inner working of things it can really help down the line
late fulcrum
It has paid off handsomely ever since.
velvet pelican
i believe it
i decided to go plumber and get paid for dealing with peoples crap both literally and figurativley
tropic radish
calico-kid are you interested in radio?
tropic radish
I was thinking Ham(Amateur) Radio
late fulcrum
Plumbing can be awful (I received a sewage fountain once while repairing a grinder), but I kind of enjoy the actual pipefitting part of it.
velvet pelican
would be kinda fun to make for a project but at this time i got the stepper motors to make work the way i need so my house can work the way i want
late fulcrum
Ah, home automation, neat!
velvet pelican
yeah when im dealing with fresh piping in a new build its super nice
home automation isnt eh exact term lol
home expansion
late fulcrum
Now I'm envisioning an automatic house where you press a button and a room expands
pearl vigil
@acoustic slate Sorry if I spoke on your behalf in #help-with-hw-design, but when I read his messages idk why it kinda struck a nerve while I was half awake.
pearl vigil
Expands when your phones BLE goes into range 😆
late fulcrum
Woo!
late fulcrum
Sad news: Grant Imahara passed away. He was a good guy.
pearl vigil
Really? From what
late fulcrum
Brain aneurysm, apparently
velvet pelican
oof
pearl vigil
Imahara died from a sudden brain aneurysm on July 13, 2020, at age 49
Awww, you got it. I think we can just say his genius killed him
acoustic slate
@pearl vigil all cool, my friend. Yes, he is really off base... and I’m glad I wasn’t the only one to recognize his off base comments.
pearl vigil
I enjoyed watching him when I was younger
Yeah, really wasnt fair to you or anyone who tries to help.
late fulcrum
I tend to ghost people who are rude when I'm trying to help. If they're really rude, I'll summon the moderators, but I just read that byplay, frowned, and found something better to do.
pearl vigil
That is probably typically the way to go
velvet pelican
yeah discord and toxic ppl wandering through help channels happens fairly often
the challenge is not getting triggered
tropic radish
and I just started to get active on discord!
velvet pelican
ive been using discord for years
im part of a helper team on the scripting project for minecraft i was talking about
pearl vigil
Oh that sounds like a lot of fun 😜 I bet thats full of.... interesting behavior
velvet pelican
the fun ones are the ones that show up saying "its ok that i pirated the game and you should still support me" even though we have a direct rule against it
tropic radish
Yeah, I've been on discord for about 2 years. I started to get involved when I got an invite to a fairly active server run by a guy that sells radio antennas.
Oh cool.
It's a really intresting talk. Mostly about taking tests for the UK version of ham radio tests.
They also have really good english. 🙂
velvet pelican
UK has alot of solid english speaking people
people hire me at times to write scripts for them
tropic radish
awesome!
velvet pelican
got a guy from the uk that wanted a script written and he spoke really clear
another dude from france types super well havnt heard him speak tho
done some scripts for him as well
spare time stuff
tropic radish
python scripts for minecraft?
velvet pelican
nah denizen scripts
i had a ship with working cannons and a giant squid boss fight
back in the day
got the giant squid idea from 20000 leagues under the sea
made it out of blocks
and then make the blocks move
velvet pelican
was a pretty fun setup
tropic radish
what language is denizen based off of?
Internet just went into the tank. Thanks for the chat calico! Have fun learning electronics. 🙂
sinful lark
Grant's death is so sad! He was so young! It reminds me of Grant Thompson.
dusty citrus
What is are the components of a OS kernal?
pearl vigil
Depends @dusty citrus on what topology of kernel you are talking about
Minimum is IPC, process managment, scheduling, IRQ handling, and basic IO. For a monolithic kernel like the linux kernel there are also drivers, netoworking, filesystems, virtual filesytems, and OS services
velvet pelican
@tropic radish its kind of its own language. the way its structured is kinda like english but instead of using spacing you use periods for the tags
thats a script i made for making animations out of blocks
tropic radish
@velvet pelican okay thanks! 🙂
velvet pelican
if your looking to get into coding its a nice entry level lang to learn
alot of ppl have gone from there and learned java or c#
since it teaches the concept of coding and such
tropic radish
what is "yaml"?
"yet another markup language"?
okay. naptime. have a good day calico-kid!
low cedar
moo juice
spice moss
the brain aneurysm i have suffered after year of 5
round cloud
Is anyone else as saddened as I am at the loss of Grant Imahara
late fulcrum
Yes (we were discussing it about twelve hours ago in the scrollback)
pearl vigil
From the picture you posted @late fulcrum is that you with him?
late fulcrum
@pearl vigil Yes, it is. He was super nice in person.
round cloud
I had hoped to meet him one day, never had the chance 😦
pearl vigil
Where was that taken? Did you meet up at an event?
late fulcrum
Yes, he was a guest at AwesomeConDC, I met him there.
It's kind of weird how these events go, some of the guests are mobbed and you can't even get near them, others (like Grant), you can walk right up to them and say hi.
round cloud
I got a chance to meet Gary Gygax, before he died, at Gen Con. I randomly ran into him when he was leaving the booth he'd been at doing signings, and nearly didn't recognize him. He was nice enough to sign a copy of my Players Handbook for me (I didn't have anything else really for him to sign). Great dude but one of those that was always mobbed with people and I just happened to run into him.
It's kind of weird how these events go, some of the guests are mobbed and you can't even get near them, others (like Grant), you can walk right up to them and say hi.
@late fulcrum I had always heard that Grant was one of those that didn't charge for photo ops and was always happy to meet with fans.
late fulcrum
He didn't charge for autographs but the con had a contract with EpicPhotoOps who charged a lot for photos, oversold all their sessions, and hurried everyone through (I am not a fan of EpicPhotoOps). However I dealt with them for that picture. I wanted to stage something like I was controlling something with my remote, and it had gone badly. Grant was totally up for it, and the first photo didn't really work out, they tried to hurry me out, but Grant made them wait until we got a good shot. That's the kind of guy he was.
zealous ermine
he really cared about the fans
round cloud
He didn't charge for autographs but the con had a contract with EpicPhotoOps who charged a lot for photos, oversold all their sessions, and hurried everyone through (I am not a fan of EpicPhotoOps). However I dealt with them for that picture. I wanted to stage something like I was controlling something with my remote, and it had gone badly. Grant was totally up for it, and the first photo didn't really work out, they tried to hurry me out, but Grant made them wait until we good a good shot. That's the kind of guy he was.
@late fulcrum Thats awesome. Some of the photo op companies are rediculous. I dealt with one (don't remember the name) trying to get a photo op with Shatner at a con and it was such a nightmare, never actually ended up getting the picture and took me almost a year to get a refund.
late fulcrum
That sounds about right to me. It makes me appreciate the decent photo op companies all the more.
velvet pelican
i dont know that ive ever seen grant before but either way im sorry for the loss. it sucks when ya see someone go like that especially so young
gilded flower
He was a great person
His work as a electrical engineer got me into electrical engineering
late fulcrum
A nice night of stargazing, we saw the comet, two passes of the International Space Station, and (with a telescope) Saturn's rings and Jupiter's bands and a few of its moons.
late fulcrum
Yes, I'm on the east coast (of North America)
jovial swift
@late fulcrum how low in the sky was the comet?
late fulcrum
Fairly low (it's pretty close to the sun, so it's only visible shortly before sunrise and shortly after sunset for now, but that should improve as it moves away from the sun)
jovial swift
i have poor seeing down low here, hoping for a better view when camping in a few weeks at Cherry Springs PA
late fulcrum
That should be an improvement. You'd be about 100 miles north of me then.
jovial swift
it is dark there, hoping for clear skies, Jupiter, Saturn, Mars, comet, and Perseids!
late fulcrum
Ah, that will be good timing
jovial swift
(always plan camping around the meteor shower lol)
velvet pelican
yeah where i live i get to see quite a number of starts and comets but not too many near the horizon due to all the trees
sleek quarry
not 100% sure if i could see the comet but its hecking light outside even 1am so yea... one could read a book 😄
delicate mulch
I can never see this thing no matter what time I looked. Too many houses in the way and I don't want to walk to the fields at 3am 😄
just enjoying the pictures on Twitter
hasty quarry
How does intravenous fluid transfusion work in a hospital? Do they expect the entire bag to get consumed? How is that even possible, how does the body make space in the bloodstream to allow for it all to get in?
late fulcrum
They do expect the entire bag to get consumed. The body normally adjusts its fluid balance in a variety of ways, primarily by adjusting how much the kidneys excrete. Many patients are dehydrated to start with, or become so during treatment, so adding fluid helps. Due to the way kidneys work, excreting more fluid is actually easier than excreting less.
sick adder
@hasty quarry The normal path for liquids is that they are absorbed from the intestine into the bloodstream and then removed from the bloodstream in the kidneys and excreted as urine. When you get liquids by IV, the intestine is bypassed. As long as the kidney function is adequate, it's not as though your blood vessels have to accomodate the whole bag at once as extra volume. In some cases, IVs are used when the person is already dehydrated so the bladder may not fill right away. In other cases, the bladder WILL and the patient will need to urinate.
I don't think that necessarily the entire bag is used, it depends on the situation. The doctors and nurses will use their knowledge and experience to set the "dose" of IV fluids
late fulcrum
Additionally the body is elastic and non-rigid, you can add (or lose) a couple liters of fluid volume fairly easily. If you have too much fluid, it's known as "edema" and you look puffy.
hasty quarry
So, does the body have a sensing system for the blood’s pressure? And if that’s a bit too high, it gets the kidneys doing more work?
delicate mulch
yes
hasty quarry
Interesting
delicate mulch
or.. sort of
late fulcrum
Jeff, that explanation is more full and complete, thanks! Normally the fluid is delivered by rate, not volume, but the entire 1 liter bag is generally eventually all used during more than a short stay and a fresh bag set up as needed.
delicate mulch
osmosis
sick adder
I think that the typical IV bag is a saline solution; I assume it is set to match a common/normal blood level of dissolved solids but I don't know
late fulcrum
Blood pressure is sensed and modulated by different, faster acting mechanisms, the kidneys are more concerned with keeping blood at the proper concentration.
delicate mulch
It's what plants crave
sick adder
fwiw I was referring to http://www.cancerindex.org/medterm/medtm10.htm while writing my answer above. I'm not in medicine or an expert in bio, so take anything I say with a grain of salt. No prior familiarty with that site, it is just something that came up in a google search and as far as this page goes seemed like sensible biology information.
hasty quarry
We really are one big cell, huh
late fulcrum
Grain of salt, I see what you did there 😆
hasty quarry
Oh boy
sick adder
also, some information is source: I had minor surgery back in January and had an IV during the experience.
hasty quarry
Ah
late fulcrum
Similar here, several nurses and a surgeon in the family and I've had recurring kidney issues.
delicate mulch
sick adder
take care of your kidneys, you can't order new ones on ebay and there's no emoji for it
hasty quarry
What even damages them?
sick adder
wikipedia: list of human organs lacking an emoji
also, some information is source: https://www.youtube.com/watch?v=Futnu_6NmQo
delicate mulch
Too much salt in your diet, various drugs, Corona Virus
hasty quarry
Covid goes for the kidneys?!
delicate mulch
Covid goes for everything
hasty quarry
I thought it was respiratory
sick adder
(actually I don't think they cover ... water ... in that song. but it's very informative otherwise)
late fulcrum
It attacks the blood vessels as well.
delicate mulch
turns out no, respiratory is a side effect of it messing with your blood clotting
sick adder
sorry I love TMBG and share them at the slightest provocation
hasty quarry
I imagine immense fatigue is a symptom in that case
delicate mulch
yes
hasty quarry
Dang
delicate mulch
it's also a symptom of not sleeping enough because you're reading news articles about covid
hasty quarry
Hmmm
delicate mulch
so don't go to the ER just because you're tired now 🙂
I hear all these things from my sister every time she calls, she works in a hospital as a clinical pharmacologist
late fulcrum
COVID bonds to ACE2 receptors, which are present in both respiratory tissue and blood vessels. A reasonably readable explanation here https://elemental.medium.com/coronavirus-may-be-a-blood-vessel-disease-which-explains-everything-2c4032481ab2
delicate mulch
Didn't do much to me other than my toes looking like they were going to fall off 🤷
late fulcrum
Mine looked like that for a few days, but only one one foot, as in my case, it wasn't COVID but an ankle injury.
burnt tendon
When you get your electrolytes wrong, your body says "Ya gotta be kidney!"
sick adder
when somebody writes a great blog entry .. share it. https://jvns.ca/blog/2020/07/14/when-your-coworker-does-great-work-tell-their-manager/
big takeaways for me: 1. ask first 2. (should be #1?) learn to recognize common forms of unrecognized work.
sinful lark
I'm really bummed right now. I just got my score for the AP European History test I took.
crystal ore
Not enough for the college credit?
sinful lark
Correct.
fathom relic
Students look into the possibility of taking a class over a summer or a night class at a community college, that can count both as college credits, and high school credit. You can use it to jump a semester or year in a high school subject, along with having credit for it when you get to college.
With the current situation, maybe it can be done with online courses if you are self motivated.
stuck moth
@sinful lark AP tests are hard! I didn't do well enough in Calculus to skip some classes in college. It worked out though. I know most of the material for the class already which made it easier. That was good because some of the other classes I was taking were NOT easy. Intro physics in particular was a challenge even though I had taken one physics class already.
grave crest
I spent a whole year at AP American Government -- got one of the lowest grades in a HS class on my transcript because the teacher actually worked with the book's author on writing past exams...and he taught it rigorously.
It was some of the hardest, most intense reading & analysis that I've done period -- HS, college, or otherwise. I barely passed the exam itself, and that was with an outrageous amount of work.
To mirror what others have said, AP exams are hard. Wicked hard. If you didn't pass, take value from the material itself -- and more importantly, how you prepared that material. You probably learned new ways of studying and analysis. That'll help you for decades down the road. 🙂
[I still remember lessons and ways of looking at things from that class, back in 2002 -- which apply to the world today. I'm better for it, and sometimes it takes 10-15-20+ years to recognize that.]
proven olive
I've heard a bit from people that some colleges don't take AP credits fully, or sometimes at all, too.
grave crest
My school at the time gave a flat amount of credits, regardless of whatever I scored above a certain threshold.
delicate mulch
MEh, I dropped out of college and have done very well for myself 🙂
Its never the end of your story
rain ferry
Different colleges have different AP policies. The CollegeBoard has a list of the colleges that accept them and the minimum scores required: https://apstudents.collegeboard.org/getting-credit-placement/search-policies
short pulsar
Beware of cyberpunk beetles:
https://www.washington.edu/news/2020/07/15/robotic-camera-backpack-for-insects/
pearl vigil
That is fantastic, whoever made those must have some steady hands looking at that wiring
void rune
Or, Frank Pim is responsible, and he just enlarged the bug to wire it, then shrunk it again.
lapis bluff
As a Network Engineer, I'm forced to note that, in fact, there is no guarantee of delivery with email. It's always possible your message or the reply didn't make it. Email tends to be very reliable, but even with 6 9's (i.e. 99.9999%) 1 message in a million will get lost. That may seem like an insignificant number, but remember the Internet is a big place. The last time I saw someone work out numbers that was more than one message a second getting lost. Maybe this time Murphy decided it was your turn. So, when you don't get a response, it may actually be the networks fault and not the person.
pearl vigil
How does dropping an email work? Theres no confirmation of delivery?
lapis bluff
There is never a confirmation of delivery (unless you include a request in the message that the recipient send you one and they cooperate). There are many ways that a message can be dropped. If there is a network interruption at exactly the wrong time in one of the several TCP connections required to do the delivery, the two ends may have different ideas about whether it was successfully transfered over that hop. One of the relays involved in the forwarding can have a disk crash. And that's just the first ones that come to mind (and can be explained easily), there are many more.
pearl vigil
That seems like a poorly designed protocol for reliable message delviery in that case, surprised only an email a second is delviered, in my experience when you make a protocol like that you must always assume the network is unreliable and any dropped messages must be due to application failure not network failure. Surprised they dont like make a hash of the email including contents, when it was sent, addresses, etc then if no confirmation is received the client resends.
Hash for only once vs more than once delivery of messages. But good bit of info
lapis bluff
That was one message a second gets dropped somewhere. The total is somewhere around 300 Billion a day delivered.
pearl vigil
I get the scale of it, I still would have thought any confirmation would be a part of the application not the TCP stack
lapis bluff
And, yes, most people writing mail transfer software know about these cases and write their code to make the duplication of the message more likely when an error occurs. But lots of people are running systems provided by a lowest bidder.
It turns out there are major societal constraints which just cannot all be handled. Do you want a confirmation that the message got to my machine or that I read it? The second one has privacy concerns, the first does not guarantee that I got it (and may also have the same privacy concerns). This is why the Mail Protocol is SMTP - the "S" stands for simple and was put there because we knew there were some useful features that were just too hard to get right at the time. Many people started thinking about those problems, but they needed mailing lists to discuss those ideas, therefore SMTP to get us by until the problems were understood. Eventually everyone trying to design a final solution decided the social constraints could not be satisfied and gave up.
pearl vigil
Just that it got received by the server in the first place
Send a email, server replies hey I got that email, if not resend it. If confirmation was dropped or times out, resend the email. If the server got the same thing twice, confirm with a hash and only allow one copy to pass through
lapis bluff
And, you can't guarantee complete agreement in the face of potential packet loss. It goes under various names (all of which names seem to have been used for other things as well, so you may get some extra matches in a search), "Byzantine Generals", "ACK-ACK" are the most common.
pearl vigil
And even if the person is blocked, its just saying to the client that the server got it so any dropped packets are due to application failure not network failure. This is the castle valley problem
Or whatever its called, I think I have the problem name wrong but whaterver
lapis bluff
OK, you want a confirmation that the server got it, right? I have an email forwarding account on Pobox.com. If you send an email to MAP@Pobox.com, do you want confirmation that POBOX got it, or that POBOX forwarded it, or that my mail server got it? And still that gives you any indication that I'll see it.
pearl vigil
Just the first mail server, now that there is forwarding that is a different but even then, the hop between your forwarder and end server should use the same protocol to confirm delivery. Then any failure is due to application failure
Every hop should do it in this case, not true for other systems but for email. Im just exploring why they chose to use TCP for reliability completly.
lapis bluff
And, by the way, you're saying what you want. There are societal constraints somewhere that prohibit that, so they want something else.
pearl vigil
100% what I want and see as the best otpion, but what societal constraints are you talking about? Im saying to the confirmation in the application layer not TCP, TCP is already doing what Im saying its just in a layer below you
lapis bluff
If each relay along the line sends an ack, I consider that an invasion of my privacy. The network sholud not give out information on where I am or what I'm doing.
pearl vigil
So how does changing where the confirmation happen hurt others societal constraints because TCP is making a ACK anyways?
It should never do that, I dont see how the approach im exploring would do that any worse than TCP
The mail server would only confirm the message data made it to the server, not that you opened it, not even that you received it
Even if it was to a address that was invalid there should always be a confirmation
lapis bluff
It would. The chain of receivers reveals things about my private life that I may not want you to know. It might reveal that I'm running my mail server behind ToR, which may indicate I have things to hide.
pearl vigil
Which even though you have TOR, TCP is making a ACK back anyways, I dont see how making the application do that changes anything
Obviously there should be no IP data as that is TCPs job
lapis bluff
BTW, on the theoretical mail through Pobox, getting an ack from POBOX tells you that about 10% of the delivery problems haven't happened, the other 90% of potentail drops are forward of them.
pearl vigil
But in the case of what im saying it would be because of the application not the network
So in theory you could improve it over time
lapis bluff
You've missed the point on that. You send the mail to POBOX, so you have a TCP connection there. You never see a TCP connection to my machine, that would be what the indirection is hiding. Sure, POBOX knows that it's TCP goes via Tor, but I know them and trust them, I have no idea about randoms on the Internet sending me mail.
pearl vigil
And there would be no confirmation from your machine
Only betwen you and POBOX which TCP already does
lapis bluff
OK, I've got other things I need to do (e.g. mow the driveway), so I'm going away. If you really want to read the many terabytes of discussion that has happened on this, I might be able to send you a pointer.
pearl vigil
Okay, I hope you didnt see this as me trying to fight with you I am equally as curious in topics like this as you, have a good rest of your day! If they're interesting than sure
I dont know much about SMP specifically so if anything Ill learn about that protocol
lapis bluff
No worries. I just know that this is actually a really big problem. Trying to get a mail system that meets everyone's constraints can be shown to be impossible. There are, however, many incremental improvements that have been added, MIME and ESMTP are the two big ones. To read the specs look for RFC5321.
sick adder
huh I wonder why you would need a key with "B" and "π" on it, if indeed it is π.
covert spire
Why not?
late fulcrum
Looks more like the box drawing character ╥ than π to me.
velvet pelican
Mounted my gearboxes to my slide mechanisms yesterday... waiting ona few more parts and then ill have the steppers installed and hopefully running tomorrow
terse tartan
Here's something off-topic, managed to capture this Wednesday! Only cost me a few mosquito bites...
real falcon
here its so bright we could barely see it at all
terse tartan
Right. I was driving through Iowa and there was hardly any light pollution when I took that shot.
real falcon
yeah definitely needs quite good camera with larger sensor size
theres special app that processes data to get better night pictures but havent tried
short pulsar
Embedded hardware and software matters!
pearl vigil
Fantastic, I am surprised trhis isnt a more regular thing tbh
burnt tendon
Well, isn't that a shocking development.
fathom relic
I wouldn't have expected chargers to be able to have firmware upgrades
a bit of a paradox in the article, attack works by modifying the firmware, but says bad news is 18 out of 34 chips have no firmware update option, so can't be fixed to prevent attack
pliant herald
so, i KNOW this is definately not the place for this question...but. if you were to try to get drivers for a printer for a chromebook, and they didnt offer them from MFG., what driver base would you dig through to see if you could Frankenstiens monster it? choices are the top 3....Windows(all versions), OSX, and Linux.
im not familiar enough with chromebook, but someone wants me to lookat it, and i figured that we have enough like minded individuals that may have a branch into something of this nature
crystal ore
I assumed that Chromebooks would do the "cloud print" thing instead of directly having printer drivers at all.
pliant herald
they do, and IDK if thats where i want to steer the person
trying to extract a ppd file
she is an older woman, and im trying to keep it as simple as i can
lots of variables that are just easier if i could "hack" it to make it work
the chromebook will also accept a ppd file, so im trying to figure which OS to try and get it from
crystal ore
You might try getting it directly from the printer manufacturer too. It's not impossible they'd just publicize that in their support downloads.
What model?
late fulcrum
I would look for a PPD or CUPS printer description.
pliant herald
canon mx922, i've looked on the Support/DL page
true, i didnt check port 631
the CB can see it using the Bonjour Service Name, it just wants me to set it up. and it doesnt have that specific model
thats what im trying to do, but when i search for a ppd, it just oints to the main dl/driver page for canon
points
and the loop starts again!
late fulcrum
Apparently it's supported by Gutenprint http://gimp-print.sourceforge.net/p_Supported_Printers.php
Although it's marked as "experimental"
late fulcrum
I ended up abandoning Canon after they claimed they had driver support for a printer, but it turned out to only be (very) partial and they utterly refused to share details on the protocol. I could have bought a USB analyzer and tried to reverse engineer it, but I ended up buying a much better Mitsubishi printer which I've been happy with ever since.
pliant herald
(prints a tie dye!!!)
yeah, well, this is something that she has, so, trying to work with it and keep her in budget
late fulcrum
Yeah, I got a free Canon printer a while back with a computer, and ended up giving it away.
pliant herald
HAHA!!!
late fulcrum
I had gotten tired of fighting with always-clogged inkjets anyway, so I went dye sublimation and never looked back.
pliant herald
I've got an MX490 sitting on my desk right now, and imma call it Bob Marley....
"Jammin!!!! Hope you like jammin too!!!"
sinful lark
Has IoTPanic always been a community helper? If so, I've never noticed.
late fulcrum
They've been helping folks for a while, but got the rôle recently.
pearl vigil
Yes! Excited to have it, just got it
haughty smelt
Best news to wakeup to today: my adabox has shipped
orchid zephyr
There are two remaining operating systems that are pure Unix. BSD, and... macOS
late fulcrum
And MacOS is built on Darwin, which is derived from FreeBSD, so it's BSD under the hood too.
polar bloom
What is it that makes an OS pure Unix, though?
burnt tendon
If you walk around a Linux party running MacOS, they all point at you and yell "IMPURE!"
pearl vigil
MacOS is interesting, I dont mean to correct Im just sharing interesting info @late fulcrum but MacOS uses the Mach microkernel with the BSD libraries and syscalls atop it, its a very interesting beast
It allows for good performance as the low level drivers are duck taped to the side of mach, with most drivers existing in userspace as they should
But also causes so interesting issues after years of legacy code
burnt tendon
The whole history there is pretty twisted.
pearl vigil
Very much so
I think in pure unix @orchid zephyr means following the UNIX RFC standard
burnt tendon
The main thing I feel sad about is that the entire world of L4 microkernels that came after Mach was shown to be... not nearly as cool as people thought... pretty much were ignored, even though they made it a lot easier to switch contexts without the performance cost.
So, it's much easier to create a userspace-driver multi-process OS atop L4 than it ever was atop Mach.
pearl vigil
What do you mean by not as cool? I think seL4 is awesome
burnt tendon
Mach was shown to be not nearly as cool.
pearl vigil
Oh I see, mach is neat, its just Apple needed it to preform similar to windows which is just "Run 'er in kernelspace 'bub" land
burnt tendon
When Mach came out, the hype was that everybody would be running multi-process kernels with userspace driver and when people tried to actually do that, performance was mediocre and you ended up making weird hacks to recover some of that.
finite monolith
it might work now, with better virtualization support and IOMMUs, etc cutting out some of the transaction costs
pearl vigil
Thats true, I will be interested to see where encrypted RAM takes us, interesting approach to the problem PhDs are currently working on
burnt tendon
Well, with virtualization, "unikernel" is the hype, but when all of your compute is on Amazon probably...
It's kinda that thing where you end up just accepting that stuff is messy and it's totally OK to have a not-really-microkernel desktop operating system and a not-at-all-microkernel server operating system where the actual display layer is five layers of emulation all running in JavaScript.
Because the alternative is that you become a scruffy haired mad-person living in the woods building a computer from scratch starting with home FPGA fabrication and working up from there.
pearl vigil
Well for a space ship engine, IoT devices, cell phone, high speed rail, airplane, self driving car, 5G tower, etc, ld rather have a true microkernel. On my desktop or in the cloud I can accept other solutions
young relic
velvet pelican
yuss
got all my boards today
can finally program my arduino.... if i can figure out the programming...
last basin
So, I utterlly failed at making a straight cut
straight cut of wood
I failed at basic carpentry skill
but to be fair, I never cut wood
grave crest
Measure twice, cut once.....and always buy two, because you'll always need a practice run 🙂
last basin
I have plenty of wood where they comes from
late fulcrum
It's not like wood grows on trees! Oh, wait, yes it does.
dusty citrus
Laptop Mag: Windows 10 could soon be offered as a subscription-based cloud service.
https://www.laptopmag.com/news/windows-10-could-soon-be-offered-as-a-subscription-based-cloud-service
What is even a operating system anymore where you cant even own it
pearl vigil
There have been rumors for a while, maybe desktop linux will get better market share on the desktop or ARM MacBooks will take over the world.
velvet pelican
ill just flat stop updating if that becomes a thing
pearl vigil
I bet there will be a free plan, with ads if this becomes a thing.
dusty citrus
I'm seriously considering on moving to linux, theoretically maybe ARM
If x86 emu is good
last basin
no ads plz
Linux Mint
no voice assistant being pushed down my throat
no constant update and restart computer
spice harness
no solidworks on linux
last basin
I use openscad
spice harness
<@&327289013561982976> ^^
polar wraith
Thanks @spice harness . Handled.
spice harness
NP
real falcon
sub based windows heh glad I moved on from windows years ago
delicate mulch
What is even a operating system anymore where you cant even own it
@dusty citrus According to the license agreement no one ever “owned” Windows
dusty citrus
A operating systeym is a software that manges the hardwaer and is commonly used for computer programs
dusty citrus
i dont mean by owning the rights to windows itself, but just owning it to use yourself
real falcon
yep you can still run windows 3.11 legally if you still has it now
you cant once sub expires.
potent umbra
can mcp23017 be made incorrect? because i turn pin 0 low and pin 1 low but the pin 0 stays on
pearl vigil
can it? It can, silicon can be made inperfect in many ways, but is it happening here? I would consier that extremly unlikely
umbral phoenix
Clearly I'm averse to rebooting, but there's a system software update so maybe it's time.
gray glacier
hey there. has anyone left a soldering iron on for a teeny weeny bit of more time than intended. me being the wonderful idiot i am kept a soldering iron on overnight. it would just make me feel less alone by doing a mistake.
dusty citrus
it should be fine, ive heard of other people leaving them on over the weekend and stuff
velvet pelican
So long as ya didn’t burn the house/shop down everything is a success
late fulcrum
I've done that. Sometimes I have to re-tin the tip, or if it's really cooked, replace it.
dusty citrus
yeah definitely take a look at the tip, its likely okay, but it could be pretty badly oxidized
green hemlock
i thought you did something disaterous , liike spill beer
sinful lark
<@&327289013561982976>
stuck moth
Thanks @sinful lark
real falcon
those people is being extra annoying lately. wonder why
velvet pelican
thats the whole point of trolls...
real falcon
well yeah im commenting on numbers not existance thereof. 😄
velvet pelican
lol... and thats due to quarentine and rona
have seen them a ton on other servers too
potent lion
Someone here for tattoo talk 😄
Generally wanted to ink a while loop, that symbols not to stop
But just doing
while() is just too boring 😄
Thought about doing
int i = 0;
while (i < (something that makes it infinite)) {
i++;
}
Or should I put the integer into the while?
Hmm actually integer isnt infinite.....
late fulcrum
My usual infinite loop in C is: ```c
for (;;);
Naturally you could fill it out some to craft the meaning: ```c
for (begin; ; improve) {
learn
}
Hopefully you won't take it personally if I get picky here. An unsigned int can never be less than 0 (which is perhaps your intention here). Perhaps pre-increment (++i) might be more emotionally appealing than post-increment. I'm unsure how I feel about delay(), maybe something like "rest", "ponder", "dream", or "recharge"?
potent lion
Yeah that would be cool
I actually set it to less than 0 so it never stops counting up
I could also set it to 65,535 ((2^16) - 1) which is the limit of unsigned int in arduino 😄
Im open for any improvements
late fulcrum
Certainly more appealing than do {} until(dead()); ! 💀
late fulcrum
This might be a bit much: ```c
for (new Day; ; dream()) {
love(much);
live(fully);
learn(more);
}
C explicitly defines that no condition as "keep going"
potent lion
Btw what is newin C?
potent lion
Ah. I would actually wanted the loop also to work 😄
Which mine does
Besides knowledge++ since it isnt definded 😄
Or should I replace it with experience++?
And I removed the condition
sick adder
Did not do a good job soldering these headers
grave crest
"Well, I was kinda leaning in that direction anyways..."
burnt wave
sick adder
Not all of the parts came out equally well
sick adder
it's a finicky part with very small contact area and "brim" isn't workable because there's some hidden geometry under it that gets brim and makes the part unusable
(this isn't a call for help, just grousing)
pearl vigil
<@&327289013561982976>
sick adder
geez
pearl vigil
Thanks
median trench
Modern smartphones use li ion not lipo batteries right
dusty citrus
i think
ocean sigil
@median trench I think you have that reversed. I think lipo are the usual choice for smartphones now.https://www.androidauthority.com/lithium-ion-vs-lithium-polymer-whats-the-difference-27608/
polar bloom
iPhones use Lithium-ion
ocean sigil
yup - I stand corrected - thanks @polar bloom < https://www.apple.com/batteries/why-lithium-ion/>
as I read more -- I'm less convinced.... Lipo are also Lithuim ion batteries so it is not completely clear what is meant when Lithium Ion is listed in a spec.
hasty quarry
I used to play this mobile game called Best Brokers
Which is a stock market simulator that gives you fake money, but real stocks
And I deleted the game last year after playing it for a while. I decided to download it again out of curiosity, and I was very pleasantly surprised to see that I deleted the app with 40 Tesla stocks that I bought last year
And I was up 57 thousand dollars
About 450%
hasty quarry
Now that it’s back to school season, I plan to invest 50 thousand in Zoom (evil laugh)
What else? Any ideas?
late fulcrum
Hmm, webcam companies like Logitech? Cross-legged chairs like Soul Seat? Internet router companies (Netgear, Motorola, Arris)? Folks will want to look good, so makeup companies and set dressing companies (Set Shop)?
hasty quarry
How about computer companies for kids who need to borrow computers from schools
I bet you things like the chromebook are shooting up
Those are all really good suggestions
short pulsar
@swift hatch did Lars hatch from a pomegranate?
grave crest
I will concur. no no no no no no...NO!
swift hatch
Aaaaaaaaaa!
summer cairn
The green ecto-ghost from Ghost Busters ? :)
https://toysnloot.dk/wp-content/uploads/2020/06/x_hase95535l02_a.jpg
late fulcrum
Yeah, kind of like Slimer with Too Many Teeth
real falcon
have good day 🙂
round trout
@everyone peace out peeps if you want to you can join my server Ze Gool Gids Glub and c ya
velvet pelican
i wouldnt think that many
real falcon
lol friend request. suuure no.
velvet pelican
i mean the fact that the logic n such discussed here is pretty in depth for the most part if kids are here its only for projects or just idling most likley
soft hound
hypothetically speaking, if i were to back-power a microcontroller from the +5v/usb pin, and make a modified usb cable that had the 5v wire disconnected, but left the data and ground connected, and hooked it between said back-powered mcu and a computer, would the usb cable still be able to work as a data-without-power cable?
i'm assuming it would work fine but i figured i'd ask before i accidentally sacrificed a usb port on a computer lol
burnt wave
yes
this is called a "self-powered device"
the usb hub/root hub detects the devices through the D-/D+ wires, not based on current draw from the +5v wire.
so as long as there's no connection between the USB cable's power wire and whatever power supply you're using on your device you're generally fine.
Depending on the microprocessor, you my have to make some code changes to enable self-powered mode.
the SAMD CPUs don't need any adjustments.
soft hound
awesome, thanks, and yeah it's all SAMD-based
found an old usb cable and craptop i don't care about so i was going to snip the wires and test it anyways on one of my burner Trinket M0s lol
burnt wave
yeah when I'm prototyping my eurorack modules I use modded USB cables that don't have +5v wires because the feather or whatever is powered from the eurorack power supply
soft hound
yeah that's about my same use-case, a Feather that's powered from an external 5v power supply by connecting it to the usb pin, right now to make sure there's not a possibility of killing my computers' usb ports, i unplug the power supply so it doesn't try back-powering my computer or something bad like that lol
downside is that no power supply means no proper debugging of certain higher-power things, since the computer usb port can't source enough current
so when i'm testing those specific things, i have to unplug the Feather from its wing wiring harness, flash the stuff i want to test, put everything back together, test, repeat
would be far easier to just add a panel-mount usb port for debugging/software updates lol
one that doesn't have +5v connected, that is
hasty quarry
I have a....really abstract question, per se
Why is it pretty much always so much easier to destroy than it is to create?
It reminds me a little bit of the behavior of entropy
I feel like it requires far less energy to destroy something than what it takes to create it. Almost like destruction is “what the universe wants”
dusty citrus
you
have a point
It is entropy. There are far many more disordered states than there are ordered ones.
hasty quarry
But what is order? And what is disorder? Is me destroying a porcelain plate by dropping it on the floor bringing balance closer? Or imbalance?
If what the universe wants is balance, and breaking that plate was so much easier, and almost satisfying in a sense, then.....
If my understanding of entropy is correct, the world enjoyed it when I broke that plate
(The plate is an example, I’m not venting, lol)
dusty citrus
No you're fine. I was on a handheld. You asked a non-trivial question.
I, of course, will cheat and refer to Penrose.
While he's working his way towards what he wants to say about this, he's good at acknowledging how we ordinarily think about things:
quote
It seems, also, that the various observers’ aesthetic judgements might well get involved in what they deem to be ‘order’, rather than ‘disorder’. /endquote
Basically, in what I'm reading here, he's saying the macroscopic differences in the glass of water on the table, and the shattered glass and scattered water on the floor (a moment later in time) .. are miniscule, and don't really matter (our intuition that the one on the floor is more disordered is almost accidentally correct).
quote
By far the main contribution to the entropy comes from the random particle motions which constitute the tiny raising of temperature, and dispersion of the water, as the glass and water hit the ground. /endquote
Roughly, Penrose equates 'less likely' with 'more ordered' and 'more likely' with 'more disordered'.
There are far more disordered states than ordered ones, so disordered states are much more likely to be what is found.
crystal ore
Yep, that's my understanding too. Thermodynamic processes don't really "prefer" disorder, they just do a random walk through all the possible states, and there generally are a lot more disordered states than ordered ones, so that's where they end up.
Think of like a library bookshelf. There's only one way to arrange the books in alphabetical order (or in order by size, or color, etc.) but there are a gazillion ways to shuffle them up. So if you have some process that is just randomly moving books around, it will almost never hit the ordered situations, and if you start there, it'll quickly move away from it and pretty much never return to it again.
dusty citrus
I stopped reading (just now) where Penrose talks about the low entropy of the Sun being our local source of low entropy (highly ordered, special states) because .. then he asks where all the diffuse gas came from, that the Sun formed from. ;)
IN Gus Van Sant's film, Gerry the more they get lost the more they get lost. ;)
ducks back into the woodwork
hasty quarry
Hm
mortal fossil
rain ferry
Well hello, whoever you are
pliant herald
"REMEMBER THE SUNWELL!!!!"
sinful lark
Is it considered unprofessional to put a tag (ex: Abominable) instead of your name at the top of source code if you're not comfortable putting your name?