SpaceX Starship test in about 2 minutes: https://www.youtube.com/watch?v=nf83yzzme2I
#general-chat
quartz rune
:/
umbral phoenix
Is there a way to remove a Reaction in Discord?
quartz rune
I use the browser, if I click the rxn, it goes away
umbral phoenix
d'oh, never tried that
works in the app too, I was right-clicking, checking all the menus, etc
storm pewter
velvet pelican
Does it take the trash to the curb for you?
zealous ermine
the PCBs have been ordered!
I'm a little stressed out because I can't simulate them
I think they are going to work fiiiiiine
velvet pelican
better put a few more i's in that fine
zealous ermine
i'm prepared for the debugging session of a lifetime if things don't work out well though
logic probes, oscilloscope, multimeter, the whole 9 yards
velvet pelican
lol well its gonne be fiiiiine
stoic mesa
good (sledge)hammer can be helpful too - really helps you vent your emotions
grave crest
As much as I can see the appeal of going full Office Space on pesky, uncooperative electronics (and I'm guilty of doing that myself)....
I've read that violent outbursts for stress relief (hitting it with a hammer, beating up a punching bag, etc) often compound & add to one's stress instead of reducing it.
Also, it tends to set the psychological expectation to resolve any frustration or negativity with violence, like a Pavlovian response.
A personal anecdote -- those who get angry while playing video games by smashing their controller tend to be the last people I'd want helping me in a stressful situation. I can't count on them keeping their cool when I need it the most.
And going Office Space on something? That's the first step down that path of normalizing violent responses.
honest jolt
What I like to do is procrastinate for about an hour (by watching YouTube) because when I come back to debugging, I have a fresh mindset. (not really)
Or just work on it in the morning. You have a clear head - use it while you can!
Today I finally found out that ADAFRUIT_FEATHER_M4_EXPRESS and ADAFRUIT_PYGAMER_M4_EXPRESS aren't the same thing. 🤦
umbral phoenix
Migration Assistant, after a clean install, is telling me it will take 659 hours to restore from Time Machine. I think it’s a little confused though, I calculate only about 30 hours based in the transfer rates.
vague jacinth
Hardest decision with new a Feather M4 board: Do I solder male headers, female headers, combo male+female headers... 🙆♂️
umbral phoenix
What are combo headers? I like stacking headers for all but displays, good for solderless breadboards and you can always cut the pins if you want to solder it somewhere
vague jacinth
Combo headers are female headers with extra long male pins at the bottom that go through the board and act like male headers on the bottom
umbral phoenix
Ah, thanks, I think we’re talking about the same thing
versed storm
Anyone play minecraft?
zealous ermine
i just found 3 tubes of GAL22V10s at my school from and old class, and they gave them to me
this is a great day!
Time to make all my messy glue logic into 1 IC
burnt tendon
I guess someone was really your PAL today.
hasty quarry
I watched the introduction of Gordon Ramsay's masterclass
Then went to make myself a grilled cheese
umbral phoenix
ORLY?
velvet pelican
I guess someone was really your PAL today.
nah just picked up a few gals
strong aurora
Hello Guys. I am facing a problem in hqcam with pi 4 . Any idea what’s the issue of pink screen
ocean sigil
You don’t have a lens attached.
late fulcrum
Interestingly, Jameco now carries the Ben Eater kits for building breadboard computers and the like.
rapid solar
Interestingly, Jameco now carries the Ben Eater kits for building breadboard com...
cool, the Ben Eater stuff is really nice. I've had a lot of fun following/replicating things like the debouncing with 555 timers and reviewing this on the scope 🙂
late fulcrum
I'm building a breadboarded 1802 CPU using similar techniques, but instead of using a 555 as a variable/manual clock, I'm co-opting the same Arduino Mega that I'm using as a bus analyzer.
I found the AdaFruit jumper wire housings make it quick to wire stuff up
rapid solar
I also want to get back to it one day, but right now my attention/interest is more on the esp32s2 stuff and trying to wrap my head around some developments there. I'll have a look at the adafruit jumper wire housing now, may come in handy 🙂
late fulcrum
My attention/interest has also been on other projects (currently, this argon/krypton laser I bought myself as a gift)
rapid solar
cool .. I was kind of on an ordering spree and now more stuff arrives than I can handle 😄
late fulcrum
That's not a bad situation to be in
rapid solar
Yes! 😄
late fulcrum
I wired up a 240V 20A outlet (visible next to the breaker panel behind the table full of laser goodies)
rapid solar
Cool, that is the kind of stuff I'll better stay away from 🙂
high galleon
that's crazy. I was coding in python, testing BLE stuff ... and all of a sudden I am writing (and debugging) JS and HTML ... (ok, to test the UART from my windows PC to a CPB). the adafruit ble lib manage it better than chrome web bluetooth stuff... sigh...
idle lion
Github has a built-in dark mode now! 🎉 🌃 I missed that news the other day, but just stumbled on to the switch for it.
stoic mesa
the original Macintosh???
dreamy solstice
a 512k
so not really "original"
but almost
I guess it's technically just a 128 released a few years later with bigger ram chips
my brother and I sniped it on ebay for $152
only thing "wrong" with it are very minor cosmetic issues; the logo on the back is a wee bit scuffed, functionally, it's perfect
hasty quarry
What’s more grammatically correct? “Sometimes that happens and I react this way” or “Sometimes that happens, and I react this way”
crystal ore
The latter. The two pieces are complete subject-verb clauses, so they typically would want a comma between them.
umbral phoenix
I like that the answer uses comma-separated clauses, and I wonder if that was intentional.
stoic mesa
I remember at some moment I was putting an acknowledgement in my book "I'd like to thank my son Andrew K for proofreading" and got into discussion with the editors about commas - should it be "my son, Andrew K, for..." or no commas?
The final answer seemed to depend on whether I also have other sons 🙂
stable vapor
Hi everyone, I would like to find a job where I am doing "maker" type things, working with Arduinos, building circuits, "physical computing", LEDs. Do you have any recommendations on finding jobs that might do something similar? I've found "Arduino" doesn't bring up many results on job boards.
tardy badger
@stable vapor do you have any formal education or training?
if you have a CS/CompE/EE bachelors degree, you could probably land yourself a job with a company doing Field Applications Engineering, or Factory Applications Engineering.
otherwise, it can be tough to break in without a formal background.
Most people here who make stuff don't necessarily have degrees. Plenty of them sell the devices and boards they make too
stable vapor
@tardy badger I have BA in Comp Sci (May 2020), and a few internships. I've never heard of those jobs, thank you!
tardy badger
You might apply for jobs that are more related to Embedded Software Engineering
that gets you pretty close to the hardware too 🙂
Not 100% sure where you are located, but here is what comes up for Embedded Software Engineering on Indeed: https://www.indeed.com/jobs?q=embedded+software+engineer&l=United+States
zealous ermine
i just realized that my eeprom flasher can also program and dump the flash rom of atmel micros
so far i've dumped the rom of half my arduinos. its cool stuff!
limber jackal
@stable vapor You can also check out the Adafruit jobs board - https://jobs.adafruit.com/
umbral phoenix
what's running on it now, 4.1?
dreamy solstice
Yeah, I think so
waaaaaaaay out of date now
cant even run them new fangled solitaire games
umbral phoenix
there may be some hacks to go beyond 4.1, but that was the highest supported
dreamy solstice
I was mostly asking a dumb question intentionally for comedic purposes
umbral phoenix
I LOL'd 😉
dreamy solstice
the apple discord ignored the question cause they knew what I was doing
cowards.
umbral phoenix
I'm still looking for a way to get the Newton Stylus to work with an iPhone
dreamy solstice
props if you get it to work analogous to an apple pencil
just glue a bunch of arduinos and such to it, completely ugly it up but it "works"
umbral phoenix
apple pencil would probably be fine on a Newton
dreamy solstice
I wonder how hard it'd be to rig up a raspberry pi to emulate a floppy drive on the 512k using files on the pi as the "floppies"
cause it'd be really nice to not have to hunt down old 400k floppies that arent degraded
weary fiber
So... I was having problems with GPU sag in my pc case
I came up with a few different designs for a clandestine support brace-- something I wouldn't really see
I decided to leverage the hole in this white plate across my case
I designed this part! (printed in PA12 Glass Bead for rigidity and temp resilience)
and here it is installed :)
turbid flame
I wonder if a horizontal orientation would be better again than vertical because of how big graphics cards are getting
They used to all be horizontal because it was a perfect base for a crt monitor
they should standardize a vertical oriented case that is designed for a monitor to attach in front of it
limber jackal
That's a clever idea @turbid flame! There's certainly a way that can be worked out
limber jackal
and here it is installed :)
Brilliant bit of engineering there @weary fiber! What's that hole supposed to be for, if you know? Seems like they'd want to sell something like you built as an accessory, but... 🤷
zealous ermine
The beginnings of new digital clock
im so stressed over the 4-bit computer that i'm trying to do anything else to not think about it
tardy badger
Lol
late fulcrum
I did not know glass bead filament was available, that's cool
burnt wave
having an absolutely normal one https://twitter.com/theavalkyrie/status/1338307182467674112
weary fiber
I did not know glass bead filament was available, that's cool
This was made by shapeways, so I'm default assuming it's some weird industrial process
late fulcrum
Aha, that seems logical.
tardy badger
Phishers really think they are slick
Got an email from noreply@vnnsports.net for a docu sign for Davenport Aviation lol with horrible email formatting
late fulcrum
I've wasted a lot of those type of phishers' time. I had found an image of a drivers license on the web and scrambled it, and send it to them as "authentication". I'll also send this as "ID".
velvet pelican
Seems that you are very frank with them
late fulcrum
I got a telescammer robocall identifying itself as "Frank Bradham", so I adopted that name for messing with scammers. Later, I found the pictured ID badge in a parking lot somewhere, which just happened to match that name. Kismet!
velvet pelican
Love it when your telescam scam plan turns up what you need
zealous ermine
i have my answering machine set to the handshake of a 56k modem
i rarely get robo-calls anymore cause calling a modem = no money gained
stoic mesa
nice idea
velvet pelican
Lol here pretty soon the robocalls won’t understand what that means... kinda like the kids from the year 2000 and up
late fulcrum
My object is to waste their time and annoy them. If people just hang up, they move on to the next victim. If everyone wasted a few minutes of their time, they'd go out of business.
stray wind
@late fulcrum Mr. Certainly does the same thing for the same reason, or at least the keeping them from their next victim part of the reasoning.
late fulcrum
Awesome!
velvet pelican
Ive done different voices in the past and asked them to redo their info several times
My friends would be like no we already got new windows ya got anything else
zealous ermine
lol
stray wind
@fleet shore Thank you for reporting the issue with the Learn guide feed channel. I looked into it and we've resolved the issue. It should be updating again.
grave crest
@stray wind and @late fulcrum --- Indeed I do such shenanigans. It's been a hobby for many years, and I've come to learn the official name for it is "scambaiting."
I do it for two reasons:
-wasting their time. If they're talking to me, they're not talking to someone's grandparents. Sure, it's just one scammer and there are endless droves of them, but I made a difference for someone. And that matters to me.
-for educating others. In my state, it's legal for single-party consent for recording a call. So if I make a funny recording or just have the story to tell behind it, it helps people remember to talk to their loved ones about how devious these folks can be. And as G.I. Joe said, "Knowing is half the battle."
Best ways to avoid these blokes:
-don't answer calls from numbers you don't recognize.
-Dell/Microsoft/IRS/etc are never going to call you.
-no one takes gift cards as payments or "vouchers" for services.
-ask questions. Lots of questions. They hate that, because you're thinking critically -- making you a less appealing target.
If someone from an authority calls you -- such as your credit card or the IRS, ask for their extension -- and look up their official number online (or on the back of your Credit Card) and call it, asking for that person.
And be careful -- they probably have your name, address, and phone number from any number of online databases, paid/free/stolen info. Don't use that as a litmus test of legitimacy.
Generally, they'll get frustrated and hang up on you if you ask enough questions.. So with scambaiting, it's a delicate act of irritating them just enough while keeping them on the hook.
burnt wave
Unrelated, but I wrote some JavaScript: https://twitter.com/theavalkyrie/status/1338626483737288704
late fulcrum
It's a neat chip, and the data sheet gives the entire fuse map, so (theoretically, at least), you could figure out the bitstream to load with a pencil and paper.
zealous ermine
that's what i'be been doing lol
i couldn't find a way to get CUPL working, so I've been writing the files from scratch
it takes a while...
Right now, I have it configured to generate 60 pulses when pin 4 goes high (with the help of a CD4040)
velvet pelican
<@!330227457296957440> and <@!348911944486486016> --- Indeed I do such shenaniga...
@grave crest lol i do this on those ones about my vehicle warranty about to expire only it’s usually short lived cuz i ask them which vehicle the 79 cj-5 or the 67 dodge. Usually i hear a click after asking that question
Mostly all i get these days is robocalls tho... those arent as fun
Stupid hilton hotels n such. Which i have a feeling comes from amazon as i get a slew of those after i order anything from them
burnt wave
grave crest
@velvet pelican No joke -- some DMVs are legally allowed to sell your name, address, phone, and vehicle info to third parties. I can't say how unhappy that makes me feel.
burnt tendon
https://twitter.com/theavalkyrie/status/1338685889824903169
If nothing else that's kinda impressive on account of bending the bit instead of snapping it.
burnt wave
I'm an impressive lady
velvet pelican
@grave crest i did not know that. Kinda makes it feel like there is no winning...
real falcon
not bad, way better than my best print
jovial badge
grave crest
@velvet pelican There's some truth in that, it's a never-ending battle some days. But I look at it through a different lens -- I do what I can to make things better, and I try to have some fun doing it. ....a healthy approach for life in general.
And it makes me all the more passionate supporting businesses that don't sell your info, pester you with endless emails, who strive to do the right thing, etc.
Because it's so easy (especially to make a quick buck) to do the wrong thing.
real falcon
theres a quote about person having diffulity telling truth if income depends on lying
forgot exact quote
oh yes
“It is difficult to get a man to understand something, when his salary depends on his not understanding it.”
― Upton Sinclair, I, Candidate for Governor: And How I Got Licked
i got somewhat wrong
velvet pelican
Because it's so easy (especially to make a quick buck) to do the wrong thing.
@grave crest indeed.. i am a plumber and i can tell you there is plenty of ways plumbers can screw people over just by doing crappy work. For instance people do water heater rebuilds and only change the element thats bad in the unit and leave the other one thats 7 years old in it. That to me is just bad business when its just as easy to go hey im gonna do a full rebuild for ya since the kit is only 30 and the price of a single element is 15
Just so they can get more money in hopes the other element will fail sooner than later
late fulcrum
Do you have any opinions on electronic anode rods?
@zealous ermine Impressive: I had wondered about that, as CUPL (and other tools for such chips) tend to be ancient DOS-only ones that haven't been maintained or updated and generally won't run on remotely modern systems.
velvet pelican
@late fulcrum the tanks dont seem to last long enough to burn up the anodes these days.. but if you have an old glass lined tank definitely change them every so often. Ive pulled a 50 year old tank that was still holding water just because the people were worried due to its age
late fulcrum
Since the anode's function is to protect the tank, I figured a longer lasting anode would give a longer lasting tank, but apparently not.
velvet pelican
I mean ive never tried putting one in right off the gitgo but i have pulled one from a blown ten year old tank that still had life in it
There are only three tank manufacturers in the us for water heaters
They all do it cheap because they know people will buy another when the old one goes out
sick adder
.. waiting for a pi image to copy to an sd card ..
burnt tendon
Since the anode's function is to protect the tank, I figured a longer lasting an...
I can see how you'd end up with a negative attitude about it all then.
zealous ermine
i'm going to see if i can make a modern version of CUPL
burnt tendon
Well, you should make it as flexible as possible. That way you can call it Loosely CUPLed.
late fulcrum
All the water heaters advertise "glass lined tank" as if it's not going to corrode away, but they all do.
turbid flame
make sure your sd card reader is on usb3, it can take forever if you have a fast sd card but its on usb2
I got a 10 dollar reader on a hunch that my reader was actually usb2, and it worked much faster
zealous ermine
Well, you should make it as flexible as possible. That way you can call it Loos...
heh
i like it
dire viper
@swift hatch Also, if I recall correctly, you've been into Eurorack or at least synths and modular synths?
swift hatch
Yes, Eurorack and some other desktop synths
dire viper
@acoustic slate pointed me at the New York Modular Society, which has been amazingly helpful, and which lead me to the Earth Modular Society, which has also been cool.
swift hatch
Very cool.
swift hatch
thanks @dire viper
solar ridgeBOT
@dire viper No invite links.
dire viper
You're welcome.
velvet pelican
All the water heaters advertise "glass lined tank" as if it's not going to corro...
@late fulcrum the new ones are definitely not glass lined... unless they mean the fiberglass insulation in the element panels lol
arctic peak
<@!194663383537156096> No joke -- some DMVs are legally allowed to sell your nam...
No joke, the Michigan DMV is so bad about this that I filed a title transfer for a car I bought and got a vehicle warranty call about my new car as I was leaving the parking lot.
Like they had the make and model and it was surreal.
grave crest
And they use that info to sound "official", and in reality, these warranties might not be "scams" technically.
Just a really, absolutely lousy warranty that covers virtually nothing and is insanely overpriced for what you're getting. But still a warranty.
arctic peak
I completely agree. A "legal" scam.
velvet pelican
Kinda like any affordable insurance... or even some that aren’t
late fulcrum
Basically, even the legit companies are making a bet that your car will cost less in repairs than they take in via premiums. If they kept losing that bet, they'd go out of business.
One of the less reputable ones tried to liken it to buying health insurance for family members. It's not remotely analogous: a human can run up hundreds of thousands in expenses and is irreplaceable. If my car needed even $10k of repairs, I'd just junk it and get another car.
velvet pelican
Yup
But even at that health insurance doesn’t pay out
If you have a cheap plan that is
pearl vigil
No joke, the Michigan DMV is so bad about this that I filed a title transfer for...
The CA DMV sold their entire database of everyone driving, that does not surprise me, who wants a class action because oh baby.
Might be legal, but I bet if you wanted to get a lot of people upset at one thing in a court battle, its the DMV
arctic peak
It is legal. That is the worst part! Something Something offsetting costs of providing government services.
pearl vigil
What percentage is it that we spend every year collecting next years taxes?
Could use a slice of that
tardy badger
It’s any wonder people want more government
pearl vigil
Its not that I want more government, we got enough, its just all spread around all the wrong places, the peanut butter is seriously in the jelly
tardy badger
I wasn’t saying you did, I was just commenting on how people look at these situations and think “wow, just a little more government and this would be perfect”
pearl vigil
I wasnt insinuating you were insinuating anything, my bad
tardy badger
Some government services are improved by private sector partnerships or as I call them, interventions LOL
pearl vigil
That is going great with internet service
tardy badger
Yeah, the fact that I can renew my car registration online in North Carolina is kind of surprising to me
Or change my drivers license online
burnt tendon
Also, remember that while I am annoyed at folks calling me with information they acquired, I don't have stalkers or death threats to contend with like some of my friends do
pearl vigil
I dont own a car, so every notice about my warrantee is a good laugh
Or my student loans, another legal scam
The older among us here got their loans from the government, if we go get government student loans, its from a business
burnt tendon
Yeah, there's a buncha stuff I don't own that I'm "supposed" to own.
velvet pelican
Yuss and as we have been talking about robo calls on the new ios they have a do not disturb setting that sends any number thats not in your contacts directly to voicemail
Just tried that out today and it works like a charm
umbral phoenix
I also disabled my voicemail 😉
(people I care about have better ways to contact me - voicemail is The Worst)
velvet pelican
Lol well i have to be able to receive messages for work related stuff but i dont have to answer calls right away
rapid solar
After a challenging year of 2020 our boss sent some good wishes and a word of "Thank you" to the team. It was well received and tastes even better 🙂 sometimes even small gestures make a big difference, made my week! 🙂
zealous ermine
My physics teacher is teaching from home due to the snow
and his kids are playing Minecraft in the background
it's entertaining
honest jolt
hmmmm...might have gone slightly overboard with listing the full stack trace...
and also, do you think the main window looks too cluttered?
dusty citrus
@honest jolt The upper left window seems at about the right intensity level - not cartoonishly simple (I did not read any of the legends or try to process, mentally, what it's for).
It just looks good as a user interface; not too simple; not too baroque. ;)
umbral phoenix
Wanted: Feather version of the 240x135 IPS TFT https://adafru.it/4383 it's tight, but looks like it would fit
honest jolt
Hmmmm...that's a first...
jovial acorn
idk whats going on here bc i dont use windows care to explain?
honest jolt
Windows has a file format called an .msi. that's used to install programs, like a .deb for Mac and Linux. (I think it's a .deb file - never used Mac and haven't used Linux in forever) I just finished installing something and for a whole minute after the installation is finished Windows thinks the file is still in use. (Like I'm still running the installer) That has never happened to me before.
jovial acorn
ah
ty for the explanation
and yes .deb is used by debian based linux systems
im not sure mac uses .deb's seeing as its not debian based
honest jolt
Just searched it up - it's a .dmg file for Mac. All these file formats are starting to blend together in my head...
quartz rune
Don't worry, it's not a sign of brain .dmg
late fulcrum
.dmg is a disk image, the installer format on Mac is .pkg. Other linux systems use .rpm. There's just a lot of stuff out there.
brisk spire
hasty quarry
Looked through a good portion of my penny collection
I still have several hundred left to go, but this is what I got today
All of 1970, 1980, and 1990. The oldest was 1928, And I got 1962, 4, 6, 7, and 9
I plan to keep my very oldest ones in here
jovial swift
Keep your eye out for 1943 steel pennies 😉
zealous ermine
cool container
umbral phoenix
I used to save wheat back pennies whenever I encountered them in change, but I haven't seen any in quite a few years
dusty citrus
$ ar x thisfile.deb
A .deb is an ar archive.
$ egrep ar /var/lib/dpkg/info/binutils.list | tail -1
/usr/bin/ar
hasty quarry
I should really do my volunteer work
I’m in 10th grade and haven’t put in a single volunteer hour...
grave crest
@hasty quarry Would contributing to an Open Source project count?
If so, I'm sure there are plenty of projects that ATMakers could point you towards. [not speaking for them, but they directly help those who are in serious need of folks with our skills]
hasty quarry
@grave crest They'd accept some 16 year old kid? Stuff like that scares me.....
I need more confidence
I've contributed to open source things before, yes. If that could somehow get me volunteer hours, though, that would be really neat for me
grave crest
@hasty quarry Age matters not. It's what you can give that matters -- and we're all learning, growing. You only gain experience by doing things. And there are enough problems to solve, the world needs all the kind-hearted people it can get.
AT Makers is a group that specializes in making highly-customized assistive technology for those with physical or cognitive challenges.
As for being a volunteer organization, if memory serves me right, they're a bonefide 501c3 group. Check them out through their website -- the founder Bill Binko has been on S&T many times, and sometimes can be found on this discord.
I remember that Scott Shawcroft (tannewt) volunteered with them in-person to help someone in need, back before the plague-times. And I'm sure he's not the only one on here who's lended their time and abilities to ATMaker's cause.
hasty quarry
Interesting
grave crest
@hasty quarry Check them out -- it's up to you. There are so many ways to help & excellent causes worthy of your time. And even plenty more that'll help you meet your obligations by "clocking in" and doing rote work.
But with ATMakers, your efforts will directly, immediately help someone. You'll solve a problem, making someone's life measurably better. A direct, meaningful impact -- one that wouldn't have happened without your involvement. It's hard to beat that.
hasty quarry
I appreciate it. Thank you. I'll have a look at this later
late fulcrum
It was (of course) cloudy here
mint prism
Nice @weary fiber . Thanks for the photo.
drowsy zephyr
hey guys, question, are there any good free online or offline circuit simulators?
supple surge
drowsy zephyr
that's a symbol editor
late fulcrum
You've used LTSpice before, why not that? There's also Circuit Simulator. I don't know if they're "good", as I haven't used them, but I've seen people using them.
tardy badger
CircuitSimulator is okay, but it is limited behind a pay wall
drowsy zephyr
well, i've tried the circuit with LTSpice, it seems like it has trouble simulating it
yup, it has trouble
soo, im supposed to simulate this boost converter, but the square signal that it needs has really high frequencies, not to mention i have to change its duty cycles
ltspice has a hard time simulating these
late fulcrum
It's easy enough to set frequency and duty cycle. You may need to assign a reference voltage (or use a two-terminal voltage generator)
For high frequency you may need to set the time slice small
That's an odd choice of diode
drowsy zephyr
idk okay
so i just choose a regular diode
how do you set the time slice?
this is how you generate the square wave right?
late fulcrum
I don't know, like I said, I haven't used them (I just breadboard stuff)
You need to connect your voltage source return to the MOSFET source pin.
jovial swift
@weary fiber very nice, thanks! It was cloudy here though. I'm just going to have to wait another 800 years 🙂
sick adder
they make rainbow dip switches now !?
burnt tendon
Oooooh, I don't really like dipswitches very much but that looks fun
median trench
Does anyone know where i can buy a 0.05” pitch pin header
gloomy sparrow
Does anyone know where i can buy a 0.05” pitch pin header
median trench
I need to connect this to 0.1” pins
How could i do that
Its absolutely tiny
Idk how to solder to that
median trench
Link?
tardy badger
Looking for the right one
median trench
Thank you
tardy badger
I know
median trench
Oh
tardy badger
Can plug ji believe is two pin
tardy badger
But the 3 headers should fit on a jst 3 sm receptacle If I’m not mistaken
@late fulcrum any suggestions?
tardy badger
That might work, but I was thinking more of the female Receptacle version
tardy badger
Hmm
late fulcrum
What board is that?
late fulcrum
Hmm, it refers to a debug serial cable but I know know what cable that is
The cable on the web site shows male pins, which wouldn't appear to work with that connector
umbral phoenix
do 3 regular female prototyping jumper wires fit across those pins?
if so... this might be tight https://www.adafruit.com/product/3893, or maybe make a cable with https://www.adafruit.com/?q=raw+jumper&sort=BestMatch + https://www.adafruit.com/?q=housing+pack&sort=BestMatch (no latching though, can't tell if that board's pin base has a latch)
median trench
@late fulcrum could i use that cable and connect it to the gpio
late fulcrum
I'm not sure which GPIO you mean
late fulcrum
I thought you were trying to connect to the debug UART connector, not the GPIO
late fulcrum
Alas, I do not understand
late fulcrum
When you say "connect to UART", do you mean the 3-pin connector for the debug UART, or something else? And what do you want to connect to it? It appears that the usual use for it is via a USB-serial cable
late fulcrum
Unfortunately, I have not been able to find data on what kind of connector it is, so I'm not sure how to physically connect to it, assuming that's what you're asking.
However you also mentioned connecting the UART to the GPIO, so it's possible you want to know how to connect to it electrically (voltage level, protocol, etc.)
zealous ermine
TTL inputs can be kept floating, but CMOS can't right?
like for unused gates and unused inputs and such
zealous ermine
the computer has a fair amount of floating TTL inputs, but I tied all the CMOS ones to ground
stone orbit
Most TTL inputs float high but you need to look at the data sheet to verify from the equivalent input circuit. Designing circuits that rely on inputs floating to a known state isn't really good practice. However, it may teach you a lot about debugging.
CMOS is pretty much random.
zealous ermine
Ok, thats what i thought 👌
all the TTL ones are for chips like 08s, 04,s and 32s so nothing that would be too unhappy
another thing I don't understand is the fanout on the CD4017. The datasheet states that it can drive around 10 ls TTL inputs but I have it driving 36 without an issue
stone orbit
Fanout is specified for noise margin and rise time. If you look at the signals on a scope, they may not go fully to a logic high or low but close enough to work. The rise time will probably be slower than spec.
I much prefer CMOS even if it is 74HCxx.
zealous ermine
Sounds good, and yeah that makes sense. I've been running the computer at around 1khz so it makes sense why it still works
I'm going to overclock it until stuff stops working to see what the maximum limits are
velvet pelican
anyone ever tried making an automatic startup for a generator before?
drowsy zephyr
guys, im in big trouble
im having a hard time analyzing analogue op amp circuits, and i gotta write down a basic theory on how a circuit works
can somebody tell me an easy way to know what does what?
i dont really want to do calculations on all of the analogue circuits, because that didn't really tell me what purpose of each part
For example this circuit, i know that A and B is a voltage divider, i know that the output at C is an amplified version of Vin
but i don't know what part does what exactly
https://cdn.discordapp.com/attachments/232701723028881408/791140783280357397/Capture.PNG
stone orbit
anyone ever tried making an automatic startup for a generator before?
Yes. The trick is to use a tachometer input to the micro to know when it actually starts.
velvet pelican
nice... planning to make an auto start setup for the generator on my pumphouse so it will just start when needed with a 10 minute timer to shutdown if it doesnt sense the pump switch kicking on again
late fulcrum
@drowsy zephyr The voltage divider at A sets the idle DC level of the non-inverting input. The voltage divider at B scales the feedback voltage to the inverting input, which tailors the gain. The capacitor will also have a frequency dependent effect.
drowsy zephyr
so, is the voltage that enters the plus Vin - 18*(10k//10k)?
velvet pelican
@jovial swift i dont think ive posted updates un a fair while here...
This was still a few weeks back tho
Plumbing is 90% complete hvac just needs a wire spliced in to finish the run and the rest of electrical gets done after that... then its insulation time and finish the rest of my plumbing and gas lines to start drywall
hasty quarry
Why does the sun come out during the day and not at night when we actually need the light
How stupid is that?
I don’t understand
velvet pelican
Thats the slave labor force at hand...
drowsy zephyr
guys, question, in an op amp does the output have a current or not?
ideally it's only voltage right?
wait sorry
so it has a current right?
coarse salmon
in theory it has infinite output current (sink/source) due to zero output impedance but in reality its max is often quoted in mA (see datasheets). you can of course drive higher current loads through amps/buffers etc
*please confirm with your own research as its been MANY years since I did electronics 😬😅
coarse salmon
well again in an ideal opamp open loop gain is infinite so any diff in inputs means infinite output voltage...
I would read up on opamp theory and bear in mind that 'ideal' opamps are a tool and are somewhat weird if assumed practically possible heh.
drowsy zephyr
another question, how do you treat diodes in an equation
as a voltage source or something?
the 0.7?
drowsy zephyr
aight
jovial swift
@velvet pelican Wow, looks and sounds like great progress! I like the paint scheme. I dunno about in the NW but it's high time for insulation here in the NE 🙂
velvet pelican
@jovial swift yeah you guys are getting blasted with snow right now too... might be frozen outside this morning here but its like 30 degrees so not /that/ cold
jovial swift
we had more snow in one day last week than we did all of last winter! it's about 30 here as well
really annoyed - was cloudy Monday night for the Great Conjunction
but on plus side we got today off so I can finish my shopping before Christmas Eve for once 🙂
velvet pelican
Lol we have a windstorm Monday with rain blowing sideways. Lost power overnight and couldn’t see anything. So I missed it too sadly
jovial swift
now trying to figure out how to make my retirement savings last 800 years 🙂
velvet pelican
Invest
140,000 in stocks spread out at roughly 8% should bring in 3000$ every quarter
If the math i read was right
Thats in dividends
polar bloom
The 8% is a long-term average though.
velvet pelican
Yeah i get all of it is long term with dividends
Unless you go volatile and invest in real estate stocks
Which have extremely high returns but are very high risk
jovial swift
so long as I scrimp the first 100 years then even modest returns should be good 🤣
Happy Holidays all, off to do my elf duties
sick adder
[via hackaday]
quartz rune
Reminds me of dharma initiative food
honest jolt
First thing I thought was some people are gonna have flashbacks to trying to tell someone how to make a PBJ sandwich in computer science class.
late fulcrum
There's also a 1196A Standard Cigarette (for ignition resistance testing), festooned with warnings.
late fulcrum
I just noticed the transistors on this AdaFruit board appear to be marked with alien glyphs https://cdn-shop.adafruit.com/970x728/1571-00.jpg
tardy badger
I won Apple air pods 2nd Gen through Verizon up
That’s the first time I’ve even won anything like that
quartz rune
woot!
late fulcrum
Helpful hint for people trying to figure out the connector pitch of flexible cables (and others): this multi-pitch adapter board makes a dandy pitch ruler: https://www.adafruit.com/product/1436
sick adder
what an excellent idea!
the adafruit pcb ruler has .5mm, .65mm and .8mm pitch examples (the qfp packages) which can also help -- you can see 5 and 8 directly, and 6 and 7 as "between" sizes.
proven juniper
@stuck moth double check that there are not private detectives following you as well. :þ
https://techraptor.net/gaming/news/nintendo-leak-reveals-extreme-measures-taken-to-track-hackers
stuck moth
haha, I don't think they are worried about the gameboy
gilded jacinth
Omg that’s creepy
late fulcrum
I remember when I was reverse engineering Pioneer's Laserbarcode system. I called up one of their engineers on a technical issue and he said it was too complex and I'd never figure it out. I was pretty close and explained how much I had done already and he suddenly changed his tone and said he'd give me a complete software suite for free if I wouldn't publish my findings. Bizarrely, the whole thing was written in Hypercard.
late fulcrum
It's a system aimed at educational use where students could scan barcodes in workbooks to play clips on laserdiscs. Pioneer would either make the barcodes for you, or sell the software to make them yourself.
Naturally, I wanted to make my own barcodes
burnt tendon
I am still Very Disappointed in the death of Hypercard.
drowsy zephyr
Guys, question, is this a HPF?
https://cdn.discordapp.com/attachments/504691699872694273/791563590179356692/unknown.png
i tried analyzing its frequency response, somehow, the amplifying factor gets closer to 1 when i decrease the frequency of the input
while increasing it only decreases the amplification
am i doing something wrong here?
coarse salmon
@drowsy zephyr
At a guess... If it is passing frequencies at a lower frequency only and attenuating higher frequencies it is behaving as an 'active' LPF...
https://www.allaboutcircuits.com/video-tutorials/op-amp-basics-frequency-response/
https://www.electronics-tutorials.ws/filter
(look at 'active' documentation , specifically: https://www.electronics-tutorials.ws/filter/filter_6.html)
real falcon
drowsy zephyr
<@!495483784666415124>
At a guess... If it is passing frequencies at a lower f...
but it was supposed to be an hpf according to a module im following
stone orbit
@drowsy zephyr Is that a circuit you were given and have to fix or is it one you designed?
I think it is a design that is "confused". If R3 went to ground, it would be an RC filter with a unity gain follower which would be a high pass but not a very good one.
Leaving R3 where it is and changing the non-inverting input to just set the DC gain would probably work better.
drowsy zephyr
<@!495483784666415124> Is that a circuit you were given and have to fix or is it...
It is a circuit im given to simulate
No fixing is required
stone orbit
Well, if you are simulating it, I guess you are done.
dusty citrus
I watched the conifer branches for 40 seconds and saw no evidence of the winds forecasted.
(NW Connecticut, 11:29 a.m. local hour)
Power company phoned twice (yesterday, day before) to say we're expecting widespread outages.
jovial swift
Picking up here (North Jersey) just now Nis, here's to hoping we don't have a traditional candle powered Christmas 😉 Seasons Greetings all!
dusty citrus
;) I'm filling containers (and the bath) with flush (non potable) water.
CTZ001-013-MAZ001-025-NYZ054-061-066-VTZ013-014-242215-
Scattered to widespread power outages.
Philly, Delaware, NJ:
https://kamala.cod.edu/nj/latest.wwus71.KPHI.html
and Upton NY (n'yawk):
These guys not hit so hard:
WESTERN PASSAIC-EASTERN PASSAIC-WESTERN BERGEN-EASTERN BERGEN-
WESTERN ESSEX-EASTERN ESSEX-WESTERN UNION-EASTERN UNION-ORANGE-
PUTNAM-ROCKLAND-NORTHERN WESTCHESTER
dusty citrus
- - -
I had setup my vegetable sprayer at the kitchen sink (that hose that retracts into the basin's ledge, with the squeeze valve, that's standard equipment in new kitchens).
Clamped it open (rubber band job) and suspended it above the sink on a hook.
Used it to fill large containers without having to squeeze the handle the whole time.
a) it back-drains through the spigot, when the water pressure is removed at the regular sink valves.
b) is quite interesting.
I restored the hand-squeezed valve to shutoff, but kept the line suspended.
Really good demonstration of water-hammer - the hose twitched, a lot, when I charged it with water pressure - even though the water had no where to go (valve was shut).
https://en.wikipedia.org/wiki/Water_hammer
Works exactly the same way as when rapidly charging any pipe with water (at a valve, usually) .. or rapidly removing pressure (again, at a valve).
Water's got a lot of mass!
- - -
🛩️
velvet pelican
That happens on washing machines alot @dusty citrus any fast acting valve causes it and alot of times to prevent it people have a hammer arrestor installed
hasty quarry
Why did we pick to count in base 10
I seriously wonder where that came from
Why base 10
Likely our hands. Because they counted with their hands, and saw 10 as a standard
Also, tomorrow is technically Halloween
Just putting that out there
jovial swift
Octaly you are correct 😉
velvet pelican
@tardy badger its gonna rain tomorrow but i would rather have snow since its brighter
jovial swift
Rudolph will earning his pay tonight fighting crosswinds in the North East
quartz rune
yeah but with all the wind everyone's nose will be red, poor guy won't even get recognition.
dusty citrus
@hasty quarry I just read that there are people who count in base 8 by using the spaces between the fingers at the knuckles, and between the thumb and forefinger.
I just tried it - the bridge between the thumb and forefinger is so different than the other three on each hand - dubious theory, unless someone's seen it.
dusty citrus
Heard the V of WTIC-AM 1080 Hartford CT just now, at the top of the hour. ;)
Wikipedia says the last note of the V marks the hour, at the end of it. ;)
29k without power .. was 35k not long ago. For the 169 towns here, less those not customers in this State (many). Some municipalities have their own power companies!
UI (United Illuminating?) is the other major power vendor in the State, iirc.
(New Haven CT area for that)
Says 0.1 percent out for them - 198 customers. ;)
Winds dead calm outside right now in NW CT.
local Davis wx stn - webbed - just now.
29.92 in. Hg (1013.25 millibars) is Aviation Standard Day (59° F, 15° C).
29.92 is a palindrome, so easy to remember.
Somtimes the barometer will deviate, centered on some other number than 29.92 and still indicates weather regime changes. This I don't quite understand.
🛩️
hasty quarry
I was given a decorative bismuth for Christmas in my gifts
How lovely
It wouldn’t happen to be toxic, would it? Should I wash my hands after touching that?
dusty citrus
In the first place, you don't know what it actually is.
I'm going with wash your hands, and don't hand it around to children, for starters. ;)
I do recognize it roughly from other photographs but I don't remember what they were of.
avoid swallowing it.
quartz rune
I think it's best to treat it as if it isn't inherently safe
that said, I think that regular bismuth crystals are the active ingredient in pepto
dusty citrus
Well I mean we handled mercury plenty as children. Bare handed. [What was I just saying?]
There's a photograph of some people standing on the surface of a giant vat of mercury, with just a simple pine board laid across it, unsupported by anything but the liquid mercury.
quartz rune
There's a photograph of some people standing on the surface of a giant vat of me...
I've seen a gif of an anvil floating in mercury
dusty citrus
Dutch Point in Hartford CT ran a mercury-vapour turbine for a while, to generate electricity. The mercury vapour had a lot more mass density than water vapour steam has.
dusty citrus
Pocket Ref <tm> will have the specific gravity of those things.
quartz rune
steel at a high in is 8,050, mercury is 13.5ish
dusty citrus
We're just not used to having a quantity of mercury on hand, in a large enough volume, to fully appreciate how heavy it is, per cubic centimeter.
quartz rune
I was very confused because I googled "Density of mercury" and got the density of the planet
stoic mesa
gold is 19, so it would sink
stoic mesa
I remember seeing an old movie where the heroes find a cave with treasure, including golden statues. Of course, at that moment earthquake hits, so the main character grabs the nearest statue - about half of life size - and runs with it to the exit....
obviously the director never bothered to check how much a gold statue of that size would weigh
dusty citrus
I bought a sloping cabinet (like an audio mixing board) 20 inches wide and 11 inches deep, and wanted to stand it on end (to form a front panel with a very shallow cabinet behind that panel, front to back).
So I put five pounds of steel inside, at the bottom, to weigh it down, when standing on the narrow end. ;)
This is all to house a small microcontroller target board, a 96x8 RGB display, and not much else. ;)
(but it looks cool)
hasty quarry
How can gold be so dense yet so soft
Very malleable. Submits to bending, I hear
I suppose malleability and density aren't as connected as I feel
quartz rune
They aren't, and it's confusing until you learn about the underlying science (which i have of course forgotten)
stoic mesa
I mean, lead is also rather heavy and yet very soft
quartz rune
IIRC it's about the types of bonds between the atoms
dusty citrus
When something is so, it is also sometimes counter-intuitively so.
You might live your entire life without ever having tried to sink mercury in gold or sink gold in mercury. So there's no real intuition to guide you.
Here's a much simpler one: you can get a better estimate of a water-based fluid (such as most food beverages) .. you can estimate its true volume more accurately, faster, by weighing it than by any measurement cylinder methodology you might use (in the kitchen, if not in the lab).
Turns out that 1 gram is the exact weight of one cubic centimeter .. of water. By definition. ;)
(1 cc is 1 ml)
why, those clever Europeans!
quartz rune
meanwhile in England "A pint's a pound the world round"
dusty citrus
;)
The Plate O' Shrimp on this one: I was thinking about the mercury vapour turbine, earlier today, and hadn't thought of it in months.
hasty quarry
I've been making a project in HTML CSS JS
For the past couple of days
And I don't usually do that, but I've been yelling at my computer, and telling them about how annoying it is
And then they go "Oh, okay"
"Merry Christmas"
They don't understand. This item. They've cursed me
dusty citrus
HTML and CSS aren't terrible markup, and HTML is older so it was learned by many folks when it was still a new idea.
hasty quarry
Anything related to JavaScript is cursed. Our household has been sealed with a terrible fate
We will be cursed with dynamic typing for the rest of our lives
dusty citrus
Web design used to be .. nicely done, with pride and conservative use of funny business.
dusty citrus
Then someone decided the web browser was now a platform, not a specific thing in itself. Used to be like a combination of a color photograph magazine, and a directory listing. ;)
hasty quarry
I've been making a Chrome browser extension, specifically. For hacking my grade-viewer website at my school
With client side code injections
For help with calculating grades
dusty citrus
When we all die, you'll have been partially responsible. ;)
dusty citrus
Well every Luddite has to stand on some previous technology platform, and draw the line there, and say 'that's it'.
hasty quarry
I suppose so
dusty citrus
NO flying cars!_
hasty quarry
I notice that I've interacted with older generations a LOT with this hobby
dusty citrus
The people who are older have the time and money and also .. very importantly .. missed out when younger, on opportunity to do it (often because of money).
I used to go into the Heathkit retail store and ooh and ahh over the microprocessor training kit/courseware. 6502 based, or similar.
It's also very new: to make microcontrollers accessible to the non-specialist.
Parallax was pretty much the only one on the market, forever.
hasty quarry
How would you get access to MCus back then
dusty citrus
Even the PIClist required you to think .. a lot.
Well you could write to the manufacturer.
Soutwest Technical Products had a small but featureful catalogue of parts.
They probably had the 4-bit Intel CPU for example.
You might order them through major industry such as Pratt & Whitney, by asking an employee a favor.
Sooner or later your interest might guide you to other hobbyists.
That first connection, to meet the first one, is difficult to do.
Once you know somebody - they know other people (Hopefully).
hasty quarry
What a journey
dusty citrus
Like, I had a VAX account at a University through a friend who was a professor there.
(very roughly: VAX == unix server online)
telnet, gopher and ftp were all I remember (email also, and probably chat, though I don't think I'd discovered it yet) (ntalk or talk).
There was no www. At all. ;)
🛩️
median trench
If i am soldering a USB>UART cable to a board the RX of the cable goes to the TX of the board and vice versa right?
jovial swift
correct
dusty citrus
TX is like GPIO in OUTPUT mode.
RX is like INPUT mode.
If you connect them backwards, there is usually no harm done. No good done, either. ;)
median trench
Oki doki
hasty quarry
I took joke “hacker pictures” of myself
“MOM MOM COME LOOK, IT SAYS HELLO WORLD LOOK”
proper umbra
up with hacking, down with cracking
zealous ermine
so my sister got these led strip lights for her room. i looked at the datasheet for the remote and it uses 950nm IR. i have a 950n IR led
you know what's gonna happen 
dusty citrus
prank
arctic schooner
honest jolt
👏 Good job Windows
hasty quarry
Is it official English to conjoin “does not” into “don’t”?
Or that a definite slang-ish thing
umbral phoenix
doesn't vs. don't
grave crest
Don't = do not
Doesn't = does not
Though in casual conversation, you'll see that blend together depending on regional slang and whatnot.
quartz rune
Just watch out for "would of" :)
umbral phoenix
incorrect in any slang 😉
grave crest
Though it is a more jarring replacement when the wrong one is used -- compared to other "incorrect" substitutions.
hasty quarry
Woulda
Wooda lol
I just hear “No he don’t” or things of the sort often
“Yes he do”
quartz rune
Vernacular English is a thing too
hasty quarry
I does not know what that word means
Ah, like “common”
What an English class would definitely not teach you
quartz rune
Yeah a more common dialect rather than something that would get past a newspaper editor for example
Lots of different dialects of English none of them are "right" really
hasty quarry
Anec, why are you data now and not dota? Or am I having a lapse in my memory and remember “dota”
umbral phoenix
always been anecdata
with all of the dialects and accents, it's amazing "English" has mutual intelligibility... mostly. I tried getting directions once in Scotland, and I could not decipher a single word the guy said.
quartz rune
There was a moment when the MP for a part of scotland asked a constituent to please use English
It was just his accent
hasty quarry
Scotland: Oy mate you been skskskdmebejdisoejebrjr ehsifir e siao e sjfkwkdkfh?
And you still somehow understand a fraction of it
It’s great
Anecdata where are you from
As a point of reference
umbral phoenix
midwest US (Chicagoland) ...I do not have a Chicago accent
dusty citrus
@hasty quarry If the speaker's primary language input is spoken (and less well supported by written language inputs) that will be impactful on communication.
hasty quarry
Yeah, I suppose so
late fulcrum
steel kindle
Is it offtopic if I have question about SPIflash chips? Say if I have W25Q32BVAIG and at github "Adafruit SPI Flash" has W25Q32BV in supported devices -list. Does the rest of the name matter (AIG)?
short bone
Is it offtopic if I have question about SPIflash chips? Say if I have W25Q32BVAI...
I dont think
steel kindle
I dont think
About been offtopic or name? I would buy any chip from the list if it has cheap Dip model.
short bone
About been offtopic or name? I would buy any chip from the list if it has cheap ...
i dont think rest of name matters
dusty citrus
look at the datasheet! always!
W 25Q 32B V AI G
W - Winbond (company)
25Q - product family SPI flash 4 kb sectors, dual/quad I/O
32B - product number/density (32 M-bit)
V - supply voltage 2.7 to 3.6 v
A - package type (not listed in the version of the datasheet I have)
I - temperature range (Industrial, -40C to +85C)
G - Green package (RoHS &c)
Package type only matters physically, not programmatically in any way.
W25Q32BV and then you can stop reading if you aren't worried about the package or temperature range or if it's 'green'.
steel kindle
`W` `25Q` `32B` `V` `AI` `G`
`W` - Winbond (company)
`25Q` - product family...
Thank you. I'm a little smarter again.
dusty citrus
;)
I didn't know myself - had a similar question a few months back and didn't bother to decode the full part number.
/the more you know / unicorn
tardy badger
Good news is at least with Circuitpython, it only cares that it matches what’s in supervisor/shared/external_flash/devices.h
I’m an SME now (I’ve fiddled with the devices.h file and had a PR merged) hehe
Essentially what you need is the device ID and storage size to match
dusty citrus
Pretty sure Adafruit started offering the SMT version of one of the Winbond SPI flash chips, for DIY expansion (a few boards have unpopulated pads).
tardy badger
It’s possible
dusty citrus
You can also pick up a six-pack of tutu's while you're at it. /rimshot
GD25Q16 2MB spi flash http://adafru.it/4763
== 16 megabits (8 bits x 2 million)
dusty citrus
I need to write an SPI basic interface for Dr Ting's eForth STM32F40x.
He provided GPIO and model code (the Interpreter) for the USART; I already added (write-only) USART code for a second device (Lumex 96x8 display).
The base code runs unmodified on Adafruit's STM32F405 Express. ;)
dusty citrus
(Use SDA and SCL silc-screened pinouts for TX and RX) (or vice-versa).
tardy badger
I’ve mostly been working with atmel/microchip MCUs
dusty citrus
tardy badger
And I’m working on an ESP32-S2 board too
dusty citrus
He does provide source (in assembler) but it's for a commercial assembler program.
tardy badger
Antenna design is not for the faint of heart
dusty citrus
No antennas are easy. ;)
(dipoles for 10 meter ham band, anyway)
L = 468 / f
length in feet is equal to 468 divided by frequency in megahertz.
L = 468 / 28.4
L = 16.47 feet
tardy badger
Hehe
dusty citrus
I don't know what happens when it's like one inch long though.
tardy badger
Small WiFi antenna design
dusty citrus
Yagi: basic dipole with reflectors and .. I have forgotten what the leading elements are called.
I made a Yagi for the weather radio (164.25 MHz?) by hanging reflectors behind a dipole on a clothes line. Just loose.
tardy badger
Mostly using chip designs
dusty citrus
For transmission you have to be resonant and match impedance.
Why not just buy off the shelf antenna?
I don't know what they use for gigahertz range .. never built an antenna for such a high freq.
For normal ranges (HF, VHF) you can just measure your results.
The hams claim that even at 440 MHz (fairly high) the usual rules don't hold up as well.
tardy badger
I just use chip antenna and then have to design the matching network
dusty citrus
Oh, okay. ;) Nice.
tardy badger
It’s a pain to get started but easier in hindsight
hasty quarry
Another English question
Is “They can and usually are written as ...” correct?
Or should that be “They can be, and usually are, written as ...”?
I say it’s the second
quartz rune
I'm not sure about the commas but the 'be' is correct, to my reading at least
hasty quarry
“They can be and usually are written as ...”?
I don’t think that’s a run-on, yeah. I suppose that sounds right
quartz rune
"They can be, and usually are written as" is how I would do it but I always got dinged for comma placement
umbral phoenix
there's a lot of subjectivity to grammar (and punctuation) too
but I agree with making the to-be "helping" verbs match in the construction
each clause should make sense without the other present
"they can be written as" & "they usually are written as"
dusty citrus
can and usually are not correct at all.
A native speaker can 'feel that something is missing'.
It's part cadence. ;)
There's a cadence to it, and when you're off the cadence, you feel it.
In many use cases, just drop .. they can be, and .. and go with they usually are.
Usually are implies they can be. ;)
It'd be important to see the utterance in the larger context to see how repetitive the ideas were.
can be implies it's optional.
usually are implies most users will take that option.
The option not usually leveraged may be the more important matter.
hasty quarry
Very good point
Very good
Thank you, nis
I’d upvote that if I somehow could
Here’s the context for you
I was studying Japanese, and had a double take at the author’s phrasing
trim grail
I love trying to troubleshoot weird analog video glitching problems... (Ignore my cat in the background lol)
For context, I'm working with a Neo Geo, an arcade system, weird video glitching happens any time I connect anything to ground (my controls, my scope probe, anything)
dusty citrus
The old xfree86 stuff would let you configure the xserver well outside of a video adapter card's specs, and create random modelines that weren't conformant to real hardware. Up to a point, anyway.
I usually stuck with the same vertical scan number, but shortened the horizontal (I'd shorten 1024x768 to 960x768, say).
I don't quite remember why, though. Maybe to get the next level of color depth.
(Fewer pixels to buffer).
zealous ermine
This might be a fun challenge
build a homebrew computer with stuff from the grab bag
late fulcrum
That would be fun. I've breadboarded a 6502 and 1802 and now I'm eyeing the diminutive 8008.
dusty citrus
Idk if this is the right channel to ask
But how do i make a line go through two path-points of the star in inkscape
@ me
crystal ore
@dusty citrus I'm not sure if there's a better way, but one method would be to draw a line exactly between the path points you want to intersect, using the usual snap-to-point functionality, and then use the scale command to enlarge the line proportionally to preserve its angle.
dusty citrus
Where can i find the snap-to-point function
crystal ore
dusty citrus
Thanks
- The line got thicc, but thats no problem since its a path and ill delete the line later anyways
- How do i divide the red ellipse in two parts along the line, i want to color one side black
crystal ore
I think you want the "Path Division" operation: http://tavmjong.free.fr/INKSCAPE/MANUAL/html/Paths-Combining.html
dusty citrus
crystal ore
As far as I know, Inkscape is the top of the line in open-source vector tools. Anything else would likely be even quirkier.
real falcon
i always wanted to make a constrant based vector program from freecad sketch
but i dont know enough to do it lol
ionic matrix
idk where to put this. I got a redmi note 9 phone and I wanna know if it's worth to put Stock android to change from miui 12 ?
ok actually if it's possible and if anyone tried yet, google isn't much of help. I hear it's something about it having a Mediatek cpu and bc of that you can't resoft or something.
ripe smelt
anyone knows a good site to order electronics in china?
zealous ermine
writing assembly for a computer with no bitwise instructions is hard
i'm kind of kicking myself for designing it that way, but it is what it is
zealous ermine
umbral phoenix
homebrew runs google analytics from the command line 😦
dusty citrus
Saturn just disappearing below local roofline 234 deg SW az and 5 deg altitude, 22:47 UTC this evening (moments ago).
Jupiter still above itt.
coarse salmon
@umbral phoenix used to be able to disable using 'brew analytics off' or something... everyones tracking us these days 😱🤪
sick adder
if you want to cheat at git(hub), .. https://blog.venthur.de/2020-12-creating-beautiful-github-streaks.html
dire viper
You know that the Boston Robotics videos are going to be the propaganda that the Kill All Humans factions use...
dusty citrus
We have a lot of problems to address soberly. High time people stopped with the Star Trek fantasies and focused on real achievables. ;)
burnt tendon
I dono, when Adam Savage was showing off his Spot from Boston Robotics, I spent the entire video thinking "Gee, that was neat" and then after that, I started thinking about what would happen when someone, inevitably, figures out how to disable or defeat the safety features.
dusty citrus
still more concerned with already-evolved primates. ;)
pearl vigil
Is there a standardized way of hashing a function signature in a low difficulty maner before I spend time trying to solve the issue? Search engines are having a really hard time with this one
pearl vigil
what do you mean hashing
Creating a end number that is likely to be unique for a given input, not for security rather for referencing
pearl vigil
I was more thinking a standard for hashing the signature, so how to organize return values, arguments, types, etc. And md5 is too difficult for the application, the bit length isnt the issue
I would get along with CRC32 or something stupid simple, its okay if people can reverse the hash quickly
dusty citrus
I'm pretty sure I've heard of all this.
Just didn't have any place to store it in my brain, as I had no framework or application when I did hear it. ;)
Don't you guys ever bother to write pseudocode?
pearl vigil
Sure, I was just wondering if there was a standard before I tired my hand at it
dusty citrus
That's like .. all I ever did .. then learned Forth, which is essentially entirely written in pseudocode. ;)
You're really better off writing a short functioning program, and putting in a comment that asks the question in context.
Rob Landley probably discusses it in context, directly; as he blogged extensively about programming.
hash site:landley.net google
pearl vigil
Sure, but Im working on seems like something someone has written a huge paper on who is able to spend more time on it than me, Im writing a kernel, I am reinventing the wheel too much already
Im okay with the code side, it is the implementation as a concept I worry about
I could knock something dirty out now, but Im willing to bet someone knows of a way better spec than what I could write
dusty citrus
I'm still swimming in miasma abstractions. ;)
I'm starting to draw the Cheshire Cat!
pearl vigil
I'm still swimming in miasma abstractions. ;)
Im not familiar with that term
dusty citrus
lol the dictionary says 'malaria'
I was reaching.
Like a rave - flashing lights and a challenged mental state.
pearl vigil
Im still not really following
dusty citrus
My point is simple: I'm not following, as you're talking in abstractions. Hard to explain the difference.
I have no idea where in code such a thing could be shoe-horned into.
pearl vigil
Well, the idea is I can reference an application interface if I could define a set of functions with arguments and return values. So say I wanted to expose a basic SPI interface, if I was a user application or a flash driver wants to interact with the SPI driver, it can do a lookup for that api, and if there is a interface change on the driver side, you cannot have a memory unsafe fault from the application since the hash wouldnt match up (Same the other way ig). Errors would be returned, and the management userspace module should restart the old driver version due to sudden high error cnt
Once the hash is used to lookup, then we can just use a PID for IPC
It needs to be standardized since there are portable binaries and a matching distribution path
dusty citrus
I think I get you .. you're packing a lot into sentences. I do the same thing but it's write-only. ;)
Don't let me naysay you .. I just don't quite parse it.
Somehow the hash sounds like it's generated from circumstance, rather than arbitary assignment (no inherent meaning, just random assignment of combination of letters and numbers).
pearl vigil
Sure, a hash is just a function that takes an input, and outputs a number, with the idea being if you have the same inputs you get the same output, a small change in input makes a big difference in output, and with a given a set of inputs there is as few possible duplicates of the output number.
dusty citrus
cyphersabre was a movement to create your own encryption, so that the authorities could not take it away from you.
The code they gave was pretty good and something you could implement in a minimal environment.
Well the basis of the so-called one-way hash is it is a deterministic form of cryptography, that tries to guarantee you cannot derive the input if you only have possession of the output - a one-way cryptographic .. hash is the word they chose, for this.
pearl vigil
Yeah, this isnt related to encryption or hashing for a security reasoning, but it is one of those weird things where you shouldnt roll your own if you dont known what you're doing, but the people who know what they are doing have dubious interests to have it be secure
dusty citrus
If you echo date | md5sum you will never (ever) see the same hash twice.
pearl vigil
What is closer to what Im doing is like a database
dusty citrus
(for reasonable definitions of 'you' and 'ever' ;)
pearl vigil
If you `echo date | md5sum` you will never (ever) see the same hash twice.
Ah, this assumes I have linux, and md5 is too difficult for the use case
dusty citrus
How much program storage is available in your system?
Crypto is hardly just for 'security' .. that's secondary to its primary function: data integrity.
Being able to vouch 'the data I sent is the data you received' with no alteration enroute.
pearl vigil
Targets could have as little as 128K i guess, but it needs to hold a bootloder, a kernel, thread 0, UART driver, GPIO driver, user application, revival server, and management application
Im working with very minimal systems code in each module
dusty citrus
Got it so very tight code.
If you're just looking for that, cyphersabre was pretty simple. I think I implemented it in the bash shell.
pearl vigil
There must be a standard for the encoding of functions though, this isnt really what I need
Its cool, Ill give it that
dusty citrus
I didn't see the cookbook stuff - I have no remembrance of how i made my ciphersabre. ;)
Something about s-shaped foo. ;) Iterating through the letter s in shape. Hard to explain since I barely remember it.
I don't know what 'encoding function' could mean external to that function.
pearl vigil
Well, encoding of function, I mean hashing of a function signature, there must be a specific way to return a number from a function signature, there is no way a PhD has not spent too much time on it'
dusty citrus
What's a function signature? You are positing things I do not know exist. ;)
pearl vigil
bool foo(int, int)
So this signature states there is a function called foo, that returns a boolean, and takes two integers, you might say declaration but outside the c world signature has become popular (Source golang)
dusty citrus
Yeah I think I have an idea now.
There's a formalized system that .. I don't remember what the terms were.
Probably for proving the structure of a computer language in a rigorous treatment.
prototype, in a way.
'function prototype'
pearl vigil
function prototype or function interface is a declaration
Yep, same thing, three different words
There must be a standard for taking that and returning a numerical value as a really low compute difficulty hash function
dusty citrus
but you want something a bit more nuanced, so that the same structure can be .. coerced? to various actual instantiations. ;)
'instantiation' is a good word for it.
Seems to me there is a 'kiddie' crypto involving exclusive OR'ing.
Trivial to decode but perhaps reasonably robust for ensuring data integrity.
Like rot13
pearl vigil
Right, that way applications depend on each other not in a code base, filepath, or hard coded value, but the interface itself. And I bet I could just use some basic modulus math
Lol, thats what most hash functions are, just really fancy modulus math
pearl vigil
Like rot13
Rot13 seems to be a cipher
dusty citrus
Yes, only they are iterative in a cough secure way.
pearl vigil
Yes, only they are iterative in a *cough* secure way.
Not all, in a database that isnt true such as cassandra
dusty citrus
rot13 is a way to disguise the meaning of your english message in an open channel.
pearl vigil
rot13 is a way to disguise the meaning of your english message in an open channe...
Yes, a cipher
limber jackal
Depending on the number of types you're dealing with, you might be able to assign each a numerical value, and then do some bit-shifting to assign the right type to the right ordinal
pearl vigil
A hash is an assymetric cipher
I guess, but rot13 isnt that
limber jackal
Though if you're also dealing with types that aren't native, then that might not work
pearl vigil
Depending on the number of types you're dealing with, you might be able to assig...
I think it needs to be more complex than bit shifting, because there is a function name
limber jackal
Unless you create a lookup table for all types and go from there
pearl vigil
A hash is an assymetric cipher
Actually no it isnt, i just thought of why
The difference between a asymmetrical cipher and a hash would be by definition the result of a cipher cannot remain a fixed length if the input is longer than the fixed length output
Hashes must have a fixed length output no matter what, while a cipher must retain all original data by design, it may contain extra data or data you cannot use, but I think for it to be a cipher the input must be intact
dusty citrus
;)
pearl vigil
Sorry for saying "actually no", that comes across rude, I am having fun 😆
dusty citrus
well you know a car can in fact be driven more miles than the odometer can register. Goes back to all zeroes.
pearl vigil
Sure, but the car is not defined by the odometer
dusty citrus
(it'd be way cool if it were, though!)
_turing machine
Penrose said that basically every turing machine is specified by a single integer.
limber jackal
well you know a car can in fact be driven more miles than the odometer can regis...
I suspect that isn't extremely likely in modern cars. Either the hardware craps out, or the ECU probably faults with a stack overflow where we'd expect it to hit 0.0
dusty citrus
When I was a kid, there were exactly (exactly!) zero personal computers in the homes of all (all) of the neighbors, combined.
pearl vigil
Idk, airplanes still have overflow issues in their code....
limber jackal
"Every time my odometer his 32767 miles, I need to install a new engine!"
pearl vigil
"Every time my odometer his 32767 miles, I need to install a new engine!"
Dont worry, the apple car is rumored to be real
limber jackal
lol
You can get it in white, graphite, and rosegold.
The model with doors will be released at a later date
pearl vigil
Lmao, but carOS 14 really slowed my acceleration down
limber jackal
But look at this finely crafted Hermès seatbelt
dusty citrus
So this hash function thingus - it reads the source code file, to get its raw input in order to generate a signature - is a compile-time generation thing?
I'd be all like man cpp by now. ;)
pearl vigil
I backed up my car to iCloud, but since I did a factory reset due to a critical bug but the factory OS version is now too early to support restoring from icloud
limber jackal
Did I.... did I "squirrel" an off-topic channel?
dusty citrus
cpp or I think it's called m4 is the one Sendmail uses.
pearl vigil
So this hash function thingus - it reads the source code file, to get its raw in...
Not source, this would take a while to explain
But at compile time
dusty citrus
Hugo, I honestly don't think there is a topology in which this conversation can be said to have been 'derailed' no matter how you permuted it. ;) /rimshot
limber jackal
Touché!
dusty citrus
IoT has been very good about my not understanding, and using pejoratives.
too insensate to fail
pearl vigil
Hm, you know what, I think I might have mis represented my requirements, because I dont think there is a point I need to do my hashing at runtime, so who cares how difficult it is? The machine compiling the modules can put in extra work
limber jackal
About the problem, if this is compiled, the caller wouldn't know the "true" method name, right?
dusty citrus
Right right right right right - compile time has a lot more resources if it's off-world (not compiling on the target itself)
pearl vigil
About the problem, if this is compiled, the caller wouldn't know the "true" meth...
There is an IPC abstraction, so no not at all, this is to enable modularity between components using defined interfaces with multiple developers and there is a lot to this
dusty citrus
All you want to do is generate a collision of assignments at compile time. I think.
(to throw the error) (maybe with auto-rerouting)
pearl vigil
Right right right right right - compile time has a lot more resources if it's of...
Yep, great, Ill just throw something ugly together then. If someone wants to fix it later Im sure there will be a long list.
Its amazing that in writing a OS, the kernel has been the easiest part
dusty citrus
;)
limber jackal
There ya go! Kick that can down the road to the next dev! 😉
pearl vigil
There ya go! Kick that can down the road to the next dev! 😉
Well, after years of being on the receiving end... XD
limber jackal
Seriously though, that's a sound plan. Make it work first, then make it faster or better
pearl vigil
That works for the off world toolchain, not so much for the kernel. That is why I was concerned
A small kernel change can have a big effect on every userspace module and Im going to have a lot of those
Its too early to be, but I am excited to get circuit python as a userspace module and showandtell
Right now running on Metro M4 Airlift and Pinetime smart watch
limber jackal
That sounds really cool @pearl vigil. Looking forward to see more as it comes! 🙂
pearl vigil
As always
dusty citrus
was fun.
limber jackal
Likewise @dusty citrus. G'night
velvet pelican
Dont worry, the apple car is rumored to be real
This whole conversation right here is golden super funny with that seatbelt comment @limber jackal
dusty citrus
I've only overlooked ctags for 25 years.
https://www.geeksforgeeks.org/ctags-command-in-linux-with-examples/
@limber jackal @pearl vigil
http://ctags.sourceforge.net/faq.html
12. How can I locate all references to a specific function or variable?
pearl vigil
Yeah that's from freebsd
limber jackal
25 years? Sourceforge? Hmmm, sounds like some fishy fly-by-night get-rich-quick utility
That's pretty slick
will definitely try to remember that if/when the need arises
dusty citrus
sounds like it's a vi addict editor-side tool. We speak of compiler side but the editor is essentially inseperable, though we insist it is atomic and fully fungible, one to the next.
Chuck Moore basically made the editor part of the language, in ColorForth, I think is a fair (mis)representation of what he did with it.
pearl vigil
I think many vim plugins use it
limber jackal
Add that to the "in theory" file @dusty citrus
pearl vigil
If I'm remembering it right
dusty citrus
afaik those files aren't used by the human being unless they're of value to that human - they are ignored by the untrained, to no harm.
So, something generated by the compiler to help the human programmer navigate the source code 'database'.
(and possibly uniquely reference a given use of a given function)
(looks basically like an index of each source code file)
Maybe to jump to the right spot in the code when an error is thrown.
(wild guesses; I of course saw them constantly and just ignored them entirely ;)
pearl vigil
Yeah but I dont want the index within a source, I want a representation of a interface. So I can say SPI driver is interface ID 0xF37B574C8EA90108, I want this value to be based off the source prototypes. If I get into the why its going into a long explanation on the tool chain and how everything is supposed to be super modular and based off specification.
hasty quarry
Word roots are odd
English is so messy
Where do -ix words come from?
-ix / -ces
I’m feeling Greek
burnt tendon
Basically, English is the borg of language. Is there a useful word in someone else's language? Cool, copy-paste, maybe strip some difficult consonants that don't exist in English, don't change the spelling, maybe just leave the conjugation alone even.
Most other languages have Rules, Mister and won't put up with such schenanigans.
umbral phoenix
...but change the pronunciation
stoic mesa
as opposed to German that merges all the words together and just for the fun of it, adds some difficult consonants?
https://images-na.ssl-images-amazon.com/images/I/510fhaEYn1L.jpg
burnt tendon
word
hasty quarry
What the heck..
crystal ore
“The problem with defending the purity of the English language is that English is about as pure as a cribhouse <bot censored>. We don't just borrow words; on occasion, English has pursued other languages down alleyways to beat them unconscious and rifle their pockets for new vocabulary.” - James D. Nicoll
real falcon
burnt tendon
I would just like to point out that, despite having the punster role, I have not made a pun on this server all year.
dusty citrus
Q: Have you lived here all your life?
A: Not yet!
real falcon
wow i havent made a comment for entire year
velvet pelican
Got some lights up n running... also got hvac up n goin
pearl vigil
Op amp anyone?
limber jackal
Don't think I have the room for that in my house @pearl vigil , sorry!
pearl vigil
Don't think I have the room for that in my house <@!461746819345416203> , sorry!
I only ordered three, the reel could fit between a crack in a wall
late fulcrum
Nice! Reminds me of one I used to have.
dreamy solstice
huh
rapid solar
It blinky blinks! 🎉 Trying to expand beyond just ESP32 related boards and chose Feather Express STM32F4 and this Nucleo board to get started 🙂
tardy badger
Throwback to 10 years ago when I thought I could get a town of 2000 people in the middle of nowhere to have a town wide New Year’s Eve party
I was an ambitious and incredibly naïve 16 year old
One who also thought he could bring the Olympic Games to said town/region
Hehe
tardy badger
also reminded of a project i was working on for a while called Priception
it was supposed to be an AI powered price movement prediction tool. I got a little overwhelmed by it after a while but the static site still lives on an S3 bucket
github repo if anyone wants to fiddle with it or contribute or be inspired lol... https://github.com/skerr92/PriceWatch
hasty quarry
Is the way the brain stores information anything similar to a computer?
Or is it reaaaaaally analog. Like, not even comparable?
When I learned about DNA, it actually looked very digital. It’s either an AT both or a CG bond, and the information is their order, correct?
I wonder if the brain “allocates” information in blocks in some way
dusty citrus
@hasty quarry No it's not remotely the same.
we don't know what it is, yet. ;)
Penrose thinks that consciousness arises from microtubule foo. ;)
DNA appears to be essentially digital. ;)
hasty quarry
Yeah
dusty citrus
There's a podcast that explains it very well but it's embedded in the context of a politically sensitive matter, so I will not be mentioning it specifically, here. ;) lol
zachary moore.
All that said, there's a strong contingent in the A.I. crowd who thinks <foo> about <bar> and theirs is a point of view that says the 'substrate' doesn't matter 'enough' to impede A.I. development.
I think being an animal on a planet has everything to do with intelligences remotely like our own (including all the smarter mammals).
If you're hungry, you have to eat.
crystal ore
The mainstream model is that the brain stores information in the number and strength of synapse connections between neurons, changing how pattern-matching happens in the future. So it's kind of halfway between analog and digital.