general-chat

[rapid geode]

tada

ha

who needs sanding. haha. im sorta surprised is came out so clean actually.

[raw jasper]

heh, you can reuse these as key-shaped icecube makers

[rapid geode]

ha

[jagged pewter]

General question, do y'all have any interesting circuit boards that you've collected over the years? I'm thinking circuit boards designed to look like fruits or any "non-traditional" shape?

[raw jasper]

gotta pitch the raspberry-shaped raspberry pi to the raspberry pi foundation. Mmmm, that's a lot of raspberries

[rapid geode]

ha

adafruit has one with an exposed gold cat

thats as funky as ive seen. most everything is boring

ha

[jagged pewter]

nice, I'm trying to look up these boards now

[rapid geode]

my keyboard top plate design has gold cats too. but its not a real pcb. no actual traces or components

[jagged pewter]

is this the gold cat one you mentioned? https://www.adafruit.com/product/5237

[rapid geode]

uh, no but thats cool!

[jagged pewter]

I've been really impressed with the shapes and designs of these types of boards: https://swadge.com/super2020/ - that I had assumed that it was a trend that more-and-more designers were going to try and do

[late fulcrum]

Useful software for designing artistic boards

https://boldport.com/pcbmode

Lots of cool ones on view here https://electronics.stackexchange.com/questions/4333/what-is-the-most-amazing-pcb-artwork-youve-ever-seen

[jagged pewter]

These are really neat, thanks for sharing!

[rapid geode]

engravign seems ok. need tweaking to leave a cleaner cut

[rapid geode]

hmmm

[late fulcrum]

Banana spider!

[rapid geode]

ha

nope

[tardy badger]

Jelly fish?

[rapid geode]

epoxied up

supposed to be orange

[tardy badger]

The haul from the garden this evening

[rapid geode]

nice

[tardy badger]

That slicing cucumber was hidden in the stacks of dill

[rapid geode]

i ate all the corn. the squirrels ate 3 so i took that as a hint.

the last several cobs were not polinated at all. i need to do better next year

overall worth while

[tardy badger]

Yeah, I got more corn this year but they were too close together to be properly pollinated

Next year I’ll do better spacing on the corn

The actual 24” spaced rows

[rapid geode]

i just dont have enough so i need to do some hand polinating

[tardy badger]

The in row spacing was fine, but the space between rows was too narrow

I did like 16” and it wasn’t enough

Next year will be much better I think

[rapid geode]

i had 2 rows 12" apart. 4" spacing. which is what the instructions say. but they tend to assume you have then 5 more of those rows ebery 3 fty

but if i get 25 nice tasting corns im happy

for $5 in seeds

and it makes a nice looking hedge

[tardy badger]

I had 4 rows with 9” between in row, and 16” or so between

Now I’m letting mine dry out for outdoor fall decor

Should be good and dry by the end of august

[rapid geode]

i knocked mine over. im gonna mulch it into the bed

all the carrots are out too.

so its empt

y

[tardy badger]

Ah

We’re planting cole crops

Fall harvest

[rapid geode]

fall is next month here 😛

ok not quite.

but theres no time to do a second carrot or corn planting

[tardy badger]

I think I’ll get another handful of sugar pie pumpkins by the middle of October

[rapid geode]

nice

[tardy badger]

Hopefully at least one or two of my winter lux pumpkins

The plants have struggled because the squash beetles flocked to it

I think aphids got two of my yellow zucchini.

Down from 6 to 4

[rapid geode]

bah

[tardy badger]

The leaves just started wilting and the fruit just got weird real fast

[rapid geode]

i got fairly lucky, not too many pests

[tardy badger]

I’ve pulled so many zucchini out so far though so it’s not a huge loss

[rapid geode]

even the squirrels were fairly well behaved

now hopefully in 1-3 weeks my peaches are ready and the squirrels dont get them

[tardy badger]

I finally have a sugar cube cantaloupe that’s about the size of a golf ball

Two small ice baby watermelon

I need to do much better at getting bigger starts next year

Grow light, plenty of nutrients to start.

[burnt tendon]

My garden this year has been meh.

Except for the green onions.

[gritty galleon]

quite appropriate

[reef lantern]

Hello! I have had a problem uploading code to all my esp32 boards from adafruit for quite some time now. The boards register that they are connected to my computer when plugging them in, but they always fail when trying to upload code to them. I have in fact never been able to upload a single line of code.

I should also mention that I have reached out for help many times but no one has been able to help me. I was also unable to get help from neither where I bought it from nor adafruit themselves.

Lastly, I am able to upload code to many other types of both esp32 boards and also others types of boards, just not the 2 different kinds (with two of each kind) from adafruit.

Does anyone know where I can get some expert help?
Just want to upload code…

[ebon dew]

@reef lantern What programming language are you trying to use them with Arduino or Circuit Python? It's best to get help for something like that in either the #help-with-arduino or #help-with-circuitpython channel depending on the language you want to program it with.

If they're Adafruit boards someone here can definitely help get you up and running no problem.

[tranquil swallow]

https://www.tomshardware.com/news/superconductor-breakthrough-replicated-twice

[reef lantern]

Ok thanks!

[tardy badger]

https://www.adafruit.com/product/5291

In stock now

[raw jasper]

🍿

I wonder how soon they'll be sold :P

[tardy badger]

They’ve lasted 30 minutes so far

[burnt tendon]

If the LK-99 stuff pans out, that and metamaterials really make it even harder to be drunk around physicists. Because why haven't you quantum physicsed me a warp drive or transporter yet?

Actually, on that note, it would also be pretty darn funny if it turns out that LK-99 is not actually superconductive, just weird in a new way that physics can't quite explain properly.

[raw jasper]

Well, that'll be nice too

[glad ruin]

This is what I'm suspecting

[burnt tendon]

I've always wanted a chemistry lab but I realized that about the only thing I'd probably use it for was making explosives except that if I had assembled one and then spent maybe a decade or so talking myself out of doing anything immature with it, now I'd be able to try to cook up my own LK-99 batch.

(I mean, I haven't forgiven chemistry for the moment where they stopped talking about valence electrons and orbitals and switched to organic chemistry where everything's made up and the points don't matter.)

[tardy badger]

Oh oof that gif is crazy

[fallow furnace]

hi everyone!
I have no clues on the LK-99, but a question on BGAs :/ .. any hint for someone looking for a low cost zif-like socket or alike ? ( a zif breakout to dip ‘d be top, since I’ve never soldered ( std or deadbug ) BGAs .. specifics ? -> P-VFBGA80-0707-001 ( BGA80, 7x7mm, 0.65mm pitch )

[tardy badger]

https://tenor.com/view/shades-season4-episode3-rick-wink-winking-rick-gif-15654675

[fallow furnace]

also, like the Rick gif ;))

[tardy badger]

That’s better

[burnt tendon]

I should probably see that show.

[tardy badger]

I agree

[raw jasper]

discord's built-in gif finder is.... something 🙃

[tardy badger]

It doesn’t give you the full preview of the gif

If at all some times

[raw jasper]

it does, on desktop, if you have the motion accessibility (play on hover) setting turned on

[tardy badger]

I’m on mobile

[raw jasper]

nvm, that's a lie, it doesn't even respect it (anymore?)

that sucks

No more discord gif picker for me lol

[patent hemlock]

rats - i just got a v1

[dusty citrus]

I hate motors due to motion sickness

There's not any device that counters the car movement by exciting the liquid in your ears in some way or another without destroying your ears?

[glad ruin]

That's... an interesting concept. Not sure if the beam-forming used for noise cancellation could do that or not.

[dusty citrus]

No, they counter just audio, I think
Not willing to be a rat lab though

4 hours of travel due to work 🤮

[rapid geode]

gone

[umbral phoenix]

i didn't even get the email

i ordered one before, but received a different part, so back to waiting

[glad ruin]

https://tenor.com/view/smoke-illusionist-magician-jochem-nooyen-gone-gif-17492543

[rapid geode]

so that worked

ha

colour is too close to the wood so its hard to see

oil gives contrast.... and a nickel on the left for scale just to show how tiny th engraving is

[tranquil swallow]

Nice

Are you expecting a return on investment on that cnc

[rapid geode]

ha

cnc is paid long ago

[tranquil swallow]

I'd like to CNC and make enough money for a second CNC, and then use those two CNCs to make enough for two more CNCs, and then use those four CNCs to obtain four more, ad infinitum

[rapid geode]

hahqa

all im trying to do with the keycaps is make enough over costs to be a wage. which means selling 40+ WASD sets a month. i have no idea if i can sell that many.

[tranquil swallow]

Are you promoting on reddit

Low-key posts just showing off the caps

[rapid geode]

ive done nothing yet. i want to get the first 20 made. take pictures, make website, prep etsy store. etcx

i should have 20 sets done by late next week. im waiting on some stuff still.

[tranquil swallow]

Best of luck then

[rapid geode]

it takes only 1 day to cnc them. but then theres waiting time for epoxy, oil finish, glueing stems, etc.

process is working perfectly so far

better than expected

especially the inlays.

most of what ive seen online at this scale are sloppy, fuzzy, just generally bad

most of the wood key caps are lasered for inlays. whihc is clean but leaves a blackened halo

[raw jasper]

What is this supposed to be? Some sort of flower?

[rapid geode]

which i dont like

ha. it is a pumpkin

[raw jasper]

🎃

[rapid geode]

works as a logo, not that great as an out of context micro inlay

it needs the green stem

[raw jasper]

/nick ihavenopumpkins

[raw jasper]

oooh you'll prolly get served by sony

[rapid geode]

ha

[raw jasper]

https://www.theverge.com/2021/10/16/22728936/dbrand-pulls-ps5-darkplates-from-sale-sony-threatens-legal-action

[rapid geode]

unlikely, but the thought occured to me

[tranquil swallow]

I believe that

[rapid geode]

The mark consists of a square, a triangle, a circle and a letter "X" each within a circle. Color is not claimed as a feature of the mark.

seems they are basically about the icons and button layout. mine doesnt really violate that, it it kinda parody

anyhow

its 20 sets. if they get mad i dont run them again

ha

[raw jasper]

Actually the "playstation shapes logo" does not involve circled shapes

[rapid geode]

thats the text from the actual trademark

d brand walked a little close to the line with theirs it seems. and taunted sony in the process.

well, at least im not the only one 😛

[raw jasper]

Why in the world would somebody want the control buttons where WASD (directional buttons) are? 😅

[tranquil swallow]

$120 jesus

[rapid geode]

ha

shush

120 yea. they are metal

mine will be expensive too, but have a nice matched custom box, fancy woods, and a lot of work in them. those ones are probably $9 on aliexpress but they want to take advantage of the etsy market.

[tranquil swallow]

Yea those look like crap

[rapid geode]

they are $88 on aliexpress.

wow

but... important they are on aliexpress. why are they allowed on etsy? can you just resell cheap crap on etsy now?

actually, so much of the keycaps on etsy are unlicensed art. nintendo must sent 10000 letters a day

[raw jasper]

https://tenor.com/view/daffy-duck-mail-mail-box-funny-gif-12263528

found a better one :P

[rapid geode]

ha

[dusty citrus]

It always have been like that
All stores do sell dropship stuff or similar
If something has success, are cloned and sold for much cheaper by biggest players

Then at the same time they claim to be the right owners

[tranquil swallow]

Not a fan of etsys current fees neither

[rapid geode]

yeah. when they do off site marketting i lose 30%

also you lose that of the shipping price too. how does that help anything? i have to make a fake shipping price to account for that

[half plank]

What analog pins do I hook a gyroscope up to on a nano

Besides a4 and a5

[versed meteor]

which gyro are you using?

[rapid geode]

for my next trick

ha

[burnt tendon]

I thought you were making an LK-99 replication joke.

[rapid geode]

levitating pizza?

[raw jasper]

https://tenor.com/view/hellmo-pizza-creed-hellmo-pizza-hellmo-creed-gif-26018398

[rapid geode]

https://www.youtube.com/watch?v=NmX4btdbrtA

[raw jasper]

is that you?

[rapid geode]

?

[raw jasper]

I was wondering whether that was your channel

[rapid geode]

oh

yes

[raw jasper]

nice

On an unrelated sidenote, I came across this article:
https://pc.watch.impress.co.jp/docs/news/1521061.html
"Longsoon's original CPU matching the capabilities of a 4-core 10th-gen intel core"

Apparently, Longsoon's Chinese name is "龍芯", "dragon core". We need more CPUs with cool names ;P

[rapid geode]

https://www.youtube.com/watch?v=4SgyTM76YDA

[raw jasper]

For some reason, I find your channel name "little shop of random" oddly fitting :P

[rapid geode]

ha

it is random

well, sorta

[raw jasper]

It makes me think of some sort of ephemeral pop-up shop

[south light]

That sells propane and propane accessories apparently

[raw jasper]

https://tenor.com/view/propane-accessories-hank-hill-gif-13079833

[rapid geode]

pumpkin and pumpkin accessories

[raw jasper]

propane-powered 🎃

[night crescent]

WE ARE LIVE! SHOW AND TELL! https://youtu.be/k6LaCEhRYdY

[tardy badger]

Reminds me of this

https://tenor.com/view/futurama-hypnotoad-hypnotic-hypno-all-hail-hypnotoad-gif-3690710

[raw jasper]

https://tenor.com/view/hypnotoad-futurama-toad-gif-12116346

[night crescent]

WE ARE LIVE! ASK AN ENGINEER! https://www.youtube.com/watch?v=wDavzhxBfy8

[limpid sedge]

that was fast lol

[edgy apex]

I used ai to help create the logo for a project I'm working on documenting. I am hoping that some people will be able to figure out the project name and purpose from the logo.

[ebon dew]

grocery delivery to cul-de-sac's only, kind of a niche' market.

[rapid geode]

its the new york subway map

[edgy apex]

Here's a hint

[rapid geode]

rat subway to all the rooms int he house?

[edgy apex]

You are more creative than I expected

[rapid geode]

ha

[ebon dew]

plumbing vent stack locator?

wrong answers only

[rapid geode]

ethernet installed by crazy uncle?

[ebon dew]

exterior house painting service specializing in stick figures

[edgy apex]

That's my next job

[rapid geode]

digital ivy growing up the side of the house

[ebon dew]

ah interior house plant health monitoring system

[rapid geode]

i like that one

they will still die though unless it also does the wattering

😛

[ebon dew]

ahh it hooks into the plumbing of course

[rapid geode]

a house shaped pizza with interconnected pepperoni

[ebon dew]

yes those would be thick slices of mozzerella

[rapid geode]

i may or may not have just put some pizza int he oven

:x

is it an app for setting all the rgb lighting in your house to blue?

[ebon dew]

interior lighting pods, whenever lightning strikes it recharges all the lights in the house for a day

[edgy apex]

I have lots of work to do I bought the domain today, did the logo and put up the front page. The system already exists, I started working on it in June for our building and equipment. My goal is to share different devices, automations and UI elements so other organizations could replicate, adapt and customize it for their organization
https://foodassistant.org/

[ebon dew]

ok the first logo is much better for that. i see no food in the house logo.

[edgy apex]

Yes the house logo isn't mine its the home assistant logo

[ebon dew]

oh, well that makes sense. never used that yet.

ohh it's the home assistant logo on the groceries. might need to get their permission for that one.

i made an adafruit hat but it's not for sale, and there's only 1 in the world of it (to my knowledge). is a bit different than using a companies logo as part of your companies logo.

would be like putting apples or intels logo on the paper bag... that's not going to end well unless they specify you can use their logo in that manner.

[glacial wigeon]

something sorta related

ive been using the rpi logo in a lot of my open firmware demos

just as a bit of a placeholder image, and to say "yes, this is running on an rpi"

[edgy apex]

It's under Attribution-NonCommercial-ShareAlike 4.0 International so I should be fine as long as I attribute and share under the same license

[olive dome]

China calls Chip as "芯片", so the translate is more like "dragon chip"
By the way, they are basically MIPS arch CPUs, even if it calls LoongArch, they are basically modified version of it. Don't take their marketing word for the performance.

snapdragon is pretty cool though, just sad that they layoff the CPU team that easily in the past.
On the other hand we have MTK with out-of-no-where marketing name.

dragon have some meaning similar to american eagle, so that's why.

[rapid geode]

round 2. had to change the fixture pin location cause it hit the switch body. grumble.

https://www.youtube.com/watch?v=dUn2GnpVrUc

zoom

[burnt tendon]

I mean, the big thing to remember is that the bald eagle looks really funny looking straight on, whereas a dragon looks pretty neat no matter what angle you pick.

[rapid geode]

the what now?

[burnt tendon]

Bald eagles look like this from the front:

Ergo, advantage: China for picking a dragon instead.

[rapid geode]

hahaha

in fairness, one is a made up animal, and the other is a dragon

[glad ruin]

Hey at least we didn't go with Ben Franklin's suggestion.

[burnt tendon]

I mean, yeah, but I don't like how the local wild turkeys look at me.

Like "We were once velociraptors"

[glad ruin]

They are the reason the velocitaptors are now extinct.

[raw jasper]

Thanks for the context! I don't take any manufacturer-provided benchmark too seriously anyways ;).

I was surprised to find out they are doing MIPS, and not some RISC-V derivative -- This probably makes them one of the few corporations to be manufacturing relatively high-performance MIPS chips in the modern day.

[olive dome]

MIPS is the RISC-V before RISC-V so....

I still remember that I study MIPS when I was in undergrad but turns to RISC-V when I was in graduate school. lol

[tranquil swallow]

Do I get the book on writing MIPS or risc-v

[olive dome]

Happened to be at the transition there

[raw jasper]

I mean, yeah. It's just that it's been kind of left behind

Also IIRC, even though it was considered a "good" teaching ISA, it was not royalty-free?

[olive dome]

It is hard for companies to switch instruction set though, even for Intel

[raw jasper]

probably especially for intel

[olive dome]

But I like the idea from Jim Keller, at the end of the day it's not the ISA but the implementation matters, ISA can carry you a bit but not all of it for high performance CPUs.

[olive dome]

I think the ISA is royalty-free actually?

[glacial wigeon]

yeah, i could look at the ISA spec, and bang out a cpu in verilog, that takes 1 clock per opcode, without too much work

but the fan-out on that is going to be a nightmare, and your max clock rate is going to be horid

[raw jasper]

After so many years, the patent will (probably) have expired anyways :P

[olive dome]

Well... I mean X86....

[glacial wigeon]

getting performance out of a cpu, requires pipelining, and thats where the art and complexity begins

and things like branch prediction, and out of order execution

[raw jasper]

tangential xkcd: https://xkcd.com/1938/

xkcd: Meltdown and Spectre

New zero-day vulnerability: In addition to rowhammer, it turns out lots of servers are vulnerable to regular hammers, too.

[olive dome]

branch prediction is really where the black magic happened personaly I think

[glacial wigeon]

something i saw in a talk, is that the cpu can have unique branch prediction estimates, for every src addr (where the branch is)

and by using the goto* trick in c, you can change a switch-case for a bytecode interpreter from:

[olive dome]

Actually I just checked, they do need license, but not much though

[glacial wigeon]

while (true) {
int opcode = get_next();
switch (opcode) {
case 1:
  break;
}
}

into:

label_1:
  ...
  goto label${get_next()};

roughly

(i forget the exact syntax)

the major difference, is that before, you had 1 jmp, that had an single set of stats, on where it could go

but after, you have a unique set of stats, for every opcode, on what the next opcode is

and now the host cpu, is predicting what the next guest opcode is, based on the previous

[olive dome]

What specifically though is that this is also some of their embedded system uses, like cruse missile and satellite systems.

So similar to RAD750, I don't think they will swap to another ISA that easily

[olive dome]

So does it relies on which CPU it runs?

[glacial wigeon]

the host cpu will impact the performance of the bytecode execution

but it always did

its just a way to let the host cpu better predict the branching, and run faster

[olive dome]

Ahhh I see

[glacial wigeon]

https://www.youtube.com/watch?v=IAdLwUXRUvg&feature=youtu.be&t=1867

[raw jasper]

To be fair, powerpc CPUs beside the RAD750 are still being produced ;)

My guess is that, because they are comparing it to consumer intel CPUs, they want to compete with Zhaoxin in the 100% domestic computer space

[olive dome]

True, but power pc mostly for legacy embedded systems that rarely changes mission critical code.

Zhaoxin is also interesting too, they "got" the X86 license from VIA, which is one of the only three companies that has X86 license I think.

[raw jasper]

I think (emphasis on think) that IBM still makes some hi-perf PPC systems

[raw jasper]

I think that's correct

[olive dome]

Ah sorry, I should specify RAD750/ embedded powerpc

It is kind of sad to see how VIA has fallen

[south light]

IBM still makes POWER (rebranded basically), and yeah it's pretty widely used still

And still being developed further

8 way SMT on some POWER products now. Not actually that beneficial to consumer workloads, but comes up a fair bit in datacenter workloads

[raw jasper]

Yeah, VIA isn't making anything anymore, right?

[south light]

VIA still does some x64 stuff

[raw jasper]

hah, depends on who the consumer is :P

[south light]

Not a lot, but they exist

[olive dome]

I'm quite exciting to see their next PowerPC cores too, I wonder how far they can push Samsung manufacture process

[raw jasper]

Oh, really? I did not know

[olive dome]

No they don't now

[south light]

Don't they? Could have sworn I'd encountered them in the last year or so

[olive dome]

VIA basically going from fab-less to system integrator

Oh that is the dead project in 2021

[south light]

Or has pandemic broken my internal calendar

[olive dome]

The AI processor one

[pallid sundial]

hii

[south light]

Also that tbf. But it's only in the past few weeks that I myself wrote some multithreaded code that did not scale to SMT at all

4c8t CPU, compute speed plateaud at 4 threads. Switched to a 12c24t, plateaud at 12. 8c8t, 8.

[raw jasper]

Yeah, it depends on the algo and how it makes use of the system resources

[south light]

Like I tried throwing 24 threads at the 12c24t machine because ya know, more profiling data is good. But the total boost over 12? Immeasurable/attributable to run to run variance

[olive dome]

I feel like if you are already getting the most out of the core, SMT won't give you benefit

[south light]

The workload was very much just raw churning of maths though

Very very few branches versus pure math

And that never scales to SMT

[raw jasper]

Yup

[pallid sundial]

  File "<stdin>", line 75, in <module>
NameError: name 'mouse' is not defined

what does this mean

( fairly new to python )

[olive dome]

SMT is just to utilize more of your core if say cloud services have lots of threads waiting

[south light]

Pretty much as it says. You've accessed something called mouse on line 75, but mouse doesn't exist

[raw jasper]

Means you are referring somewhere to something called "mouse" before defining what it is (either by setting a variable, importing the name from some module, defining a function, etc)

[pallid sundial]

pretty sure i already did tho

i think

[south light]

I know AMD were talking about 4 way SMT in zen. Dunno what happened with that

[pallid sundial]

oh lol yeah i forgot to do that

[raw jasper]

It's really interesting how much of the consumer CPU space is focused on gaming[tm]

Like, you'll never see an ad saying that this CPU will crunch excel spreadsheets 10 times faster :P

[south light]

Yeah but let's face it, how much are folk actively concerned about their spreadsheets

[raw jasper]

I guess if you run an accounting business, you'll have some monster spreadsheets? IDK

TBH, gaming is probably the heaviest home workload

[south light]

I had same convo with my grandfather, he has some pretty big excel spreadsheets for someone at home (he does accounting for a few small clients)

Going to a CPU 4 times faster, he didn't notice the difference

[raw jasper]

Hah, really?

:(

[south light]

Excel is smart these days about not updating every cell for 1 change

[raw jasper]

I guess excel formulas have enough data dependencies for the problem not to parallelize well

[south light]

Got a pretty good engine behind it now for only updating the dependencies and also to MT what can be MT'ed

And it appears on a well setup spreadsheet, the limit is human typing speed

[raw jasper]

Interesting

[south light]

Bulk imports or macros might be slower

But yeah in general, doesn't actually look like spreadsheets are much of a task for a modern CPU

Of course businesses then often move on from accounting in spreadsheets to dedicated accounting software that might have its own way of optimising the problem blah blah blah

Web browsing. Not really a big deal beyond the ram usage of modern sites

Watching media? Hardware accelerated these days, what device cant do 4K60HDR content at this point

[raw jasper]

hah, funny you say that, because modern web apps will turn an old 4-thread CPU into a space heater

[south light]

Yeah but key word there is old 😛

Not many 4 thread CPUs sold these days

At least in desktop space

The older pentium silver and atom stuff I have seen churn but with like 6-12W TDPs they aren't doing much space heating, or much work XD

[raw jasper]

FWIW, Apple advertises their performance with more "professional" workloads (mainly video editing and 3D rendering

[south light]

(they're not that bad)

[raw jasper]

I wonder what the power density (W/cm2) of modern CPUs is

[south light]

An interesting question, calculable, but can I be bothered 😛

That requires doing maths before I've had my morning caffeine or breakfast

[raw jasper]

Let's see

Intel® Core™ i9-13900K Processor

Processor Base Power 125 W
Maximum Turbo Power 253 W

die area 257 mm^2 (https://www.tomshardware.com/news/intel-13th-gen-raptor-lake-release-date-specifications-pricing-benchmarks-all-we-know-specs)

=> [46.84, 98.44 W/(cm^2)]

(Assuming all power converted into heat)

[south light]

Picked up my cats bowl to go clean it and she physically cried D:

[raw jasper]

awww kitty

[south light]

She was then very excited when I returned one with food

And then immediately disinterested

[raw jasper]

hah

cats

[south light]

True cat behaviour right there

[pallid sundial]

w

is this server alwaysy dead or

[south light]

Depends on time of day

For reference it's 9:41 in my time zone, but not everyone is in my time zone

In better news, short bike ride later I have caffeine and breakfast. Now for a short bike ride back

[sick apex]

anyone use that vscode extention Wokwi

[sick apex]

it's actually quite decent

you write JSON to add the items to the simulator

and boom

right there in your vs code

combined with platformio that has made everythign amazing

bonus part is you can use debugging because its all simulated

so you dont need an external debugger

and it's limitless

you can add as many things as you want

{
  "version": 1,
  "author": "Bonsall2004",
  "editor": "wokwi",
  "parts": [
    { "id": "esp32", "type": "board-esp32-c3-devkitm-1", "top": 10, "left": 0, "rotate": 180},
    { "id": "esp32", "type": "board-esp32-c3-devkitm-1", "top": 10, "left": 100, "rotate": 180},
    { "id": "esp32", "type": "board-esp32-c3-devkitm-1", "top": 10, "left": 200, "rotate": 180},
    { "id": "ssd1306", "type": "board-ssd1306", "left": 100, "top": 230 }
  ],
  "connections": [
    ["esp32:GND.1", "ssd1306:GND", "black", ["h0"]],
    ["esp32:3V3.1", "ssd1306:VCC", "red", ["h0"]],
    ["esp32:2", "ssd1306:SCL", "pink", ["h0"]],
    ["esp32:3", "ssd1306:SDA", "green", ["h0"]]

  ]
}``` all done with a bit of json

[fossil dawn]

can I even use all my code? Including any libraries?

(I think for web wokwi you have to pay if you want to upload custom libraries)

And of course you can even put the json into git and everything! 👍 👍

[sick apex]

literally you just select the binary

[fossil dawn]

amazing

[sick apex]

you compile it as normal

[sick apex]

im gunna assume its because they're compiling your code on their servers and if you upload your own libraries then it would take longer and more processing power

this is all running on your machine

if my code wasn't bored i'd show you my menu in it

but like yeah, it connects to GDB aswell

you just have to tell it where to find the binaries

pretty neat

[fossil dawn]

I really need to try that out! 🤩

even supports RP2040

[sick apex]

indeed it does

im building my breadboard in it rn

then i can just sit back

press a single button

and have it do everything for me

ultimate laziness

[sick apex]

boommmmmmm

debugger active

now i can refrain from losing braincells when it dumps the stack

[rapid geode]

what a mess. i wish coolant wasnt necessary for aluminium.

[tranquil swallow]

Could you submerge the entire workpiece in coolant

[rapid geode]

ha

no

coolant is a light spray. it just makes everything sticky.

after a day or so it dries out then you can sweep it up

but while you are working, its a mess

[glad ruin]

My brother is a machinist. That mineral oil stinks.

When he lived at home his clothes were always washed separately, with a more powerful detergent.

[rapid geode]

it isnt mineral oil

water based

anti fog

its not bad really

[fossil dawn]

nah ultimate smartness 😝

[sick apex]

maybe

im still trying to figure out how to stop getting core panics

i need to procedurally add menu items

as they're SSIDs

but it crashes every time

[versed meteor]

I have my project on a breadboard and its all coded, the only problem is that I don't know how to make a case

can someone help?

[half plank]

Is there any way to put arduino nano into deep sleep mode in code

[glad ruin]

Yes, but it's somewhat pointless on the nano since most of the power will be consumed by the voltage regulator.

[half plank]

I am using a 150mha battery because I need it to be tiny to fit my constraints. I plugged it into the digikey battery life calculator and it say that it will only last one hour and 30 minute. So i need some thing to make it last at least 2-5 hours

[glad ruin]

What voltage is the battery?

[half plank]

3.7

[glad ruin]

Ok, I see a few problems here:

1. The Nano is a 5V device. It is not designed to run on only a 3.3V supply.
2. You really should have a charge controller if you are operating off a battery. Feather boards have this feature.
3. If you really want to squeeze every last joule out of your battery, you should get a board with a buck-boost converter. I believe Pololu makes a few.

[half plank]

Ok, I am using a tp4056 I think to charge the battery.

[hard mica]

Overheard at work: I finally figured out why python programmers prefer snake_case over camelCase!

[patent hemlock]

https://giphy.com/gifs/agree-AR0MThYLSnmGQ

[raw jasper]

(necrobump) You mean to say there are current embedded CPUs that have 4 threads? I thought most of them tended to go with 2 (cores or threads, depending on the make and model)

[south light]

plenty of arm stuff

still a few atoms/pentiums/alder N

[keen sparrow]

Hey guys

I just got my witty pi 7 l3v7.

It also has a USB-c connection on it. if I want to power both, which usb-c do I use?

the pi or the witty pi?

[glacial wigeon]

is there a manual for the witty pi?

[keen sparrow]

Ya know, I never thought to look

[south light]

Typically when in doubt, use the inputs on the hats themselves

Most hats for powering a pi unless specifically stated otherwise are not designed to be backfed power from the pi

The original official PoE hat in particular, jeez, that thing really didn't like it if you connected power to the usb input of the pi

You'd hear the transformer coil screeching and the coil would heat up badly

Had a guy at work ignore the clear protests from the pi, killed the hat

Unfortunately not the only time I've seen regulators die from backfeeding, but it was definitely one of the more drastic

[fierce prawn]

They don't have a diode????

[burnt tendon]

I guess you could say that all of the excitement over people baking the LK-99 recipe shows that we've got a significant apatite for some room temperature superconductors.

[raw jasper]

When I see Fischer-Price release a "my first superconductor" toy, I'll believe it :P

[glad ruin]

Nothing will beat the nuclear reactor science kit in the 50s though.

[raw jasper]

I still want my irradiated seeds with random mutations

Like seriously, they'd be so fun to grow

You'd have no idea what phenotype you'd be getting!

(context: https://hackaday.com/wp-content/uploads/2016/02/110420_atomic_09.jpg)

[glad ruin]

Yeah I've seen it

[raw jasper]

(but it's possible not everyone has)

[tardy badger]

2GB Pi 4 is in stock: https://www.adafruit.com/product/4292

[burnt tendon]

Of course, what could be better than books like "The Lemonade Trick" from the 1980s where a kid got a secret chemistry set and every book in the series featured him and other characters drinking one of the test tubes from the chemistry set.

(I'm going to make my apatite pun until someone gets it)

But yah, if I look at the things that that the guy from Varda Space is using to replicate the LK-99 recipe, it's all things I'd love to accidentally have in my garage if I wasn't living the no-garage low-rent silicon valley lifestyle.

And, really, "We put a few random chemicals in a test tube for a shake-and-bake" is pure science. The Doctor, especially the tenth, would hug everybody involved.

[raw jasper]

Modern times are strange. Room-temperature superconductors could possibly be a thing, and yet I'm not excited at all

I'm indifferent at best

https://tenor.com/view/the-simpsons-principal-skinner-skinner-children-out-of-touch-gif-4463952

[burnt tendon]

Well, like, they made a huge deal about YBCO superconductors because OMG look you can use "just" liquid nitrogen, but all of the MRI machines still use helium, etc. etc.

So, yeah, dono.

[raw jasper]

Increased accessibility of MRI will be nice if this ends up being a thing

[burnt tendon]

Sure, but at least part of that is because the US insurance companies are a bunch of jerks.

[raw jasper]

Ah, I am not in the US

MRI machines are complex and costly enough for many rural hospitals not to be able to afford them (or afford the personnel to run them)

[burnt tendon]

Yeah, but the rest of the world ends up getting dragged along regardless, if there were more demand for less-costly simpler rugged machines because folks used them more...

[raw jasper]

I am not familiar with the pricing dynamics and tiers of MRI machines out there

As such, I am not qualified to comment if "less-costly simpler rugged" machines could exist. Or, if they do exist, what their demand dynamics are

[burnt tendon]

Sure, at least part of the problem is the very obvious problem of MRI-safe magnetic fixtures and everything.

[patent hemlock]

having just had a CT scan (related), there's a stupid amount of electricity involved in generating the EM particles/rays needed to penetrate

[raw jasper]

...and electricity costs are spiraling out of control too

[burnt tendon]

There's some fascinating stuff out there involving MRI-esque sensors that use the earth's magnetic field instead.

[raw jasper]

huh. Any links?

[patent hemlock]

a tech was just cleaning up when i came in for my scan - there are freaking BUS-BARS in the system

[raw jasper]

...What in the world. Pressing "F1" redirects to the Vietnamese(?!) discord support page

I am not in Vietnam nor do I know a word of Vietnamese

(as such, it's not in my system languages)

[burnt tendon]

I might be mis-remembering. There is this badboi: https://www.hindawi.com/journals/cmrb/2020/8882329/

But that's still a magnet,

I guess the other things I find fascinating about the LK-99 is the suggestion that less-pure sources of phosphorus (with sulfur traces) make it work better and also the suggestion that there's a methodological weirdness because it might not be isotropically superconductive therefore not a "superconductor" but at the same time a "superconductor"

As a practical engineer type person, I have to think that even if it's only superconductive along one axis it's both still useful as a wire and might have some very interesting properties that a "real" superconductor would not possess.

[raw jasper]

I mean, yeah

[burnt tendon]

I guess, for me, the shake-and-bake level cookery has a certain charm.

[raw jasper]

It certainly sounds like something people just.. stumbled across

Which is how we invented fire, penicillin, and a bunch of other stuff I can't list off the top of my head

[late fulcrum]

I just picked up a mysterious Crayola toy at a thrift store for a few dollars. Turns out it's "Digital Light Designer", basically a spinning POV art toy. It's a fairly nice design, but the drawing stylus was missing. Turn out it's just an IR LED and switch, so I'll just make my own.

[burnt tendon]

I do feel like we don't give enough respect to proper mad science that is that random pointless screwing around in the lab.

[raw jasper]

Engineering toys must be fun. Fun fact: The furby runs on a 6502 derivative/clone

Tamagotchi too

[burnt tendon]

Oh, now I want a furby.

[late fulcrum]

Huh, didn't know that.

[raw jasper]

The first Furby model was based around a 6502-style Sunplus SPC81A microcontroller,[21] which had 80 KiB of ROM and 128 bytes of RAM. Its core differed from the original 6502 in the lack of the Y index register. The TSP50C04 chip from Texas Instruments, implementing the LPC codec, was used for voice synthesis.

From wikipedia

[burnt tendon]

I mean, for other reasons than wanting to make a furby tentacled monster where there's a full-sized furby as the "head" and then tentacles with little mini-furbies in a horrific cute creation that can drive even the most resistant minds mad.

I already have a friend whose daughter does furby mods and the way you get the eyeballs off is very Clockwork Orange.

[raw jasper]

Fun fact:
https://www.independent.co.uk/news/furbies-banned-at-us-spy-base-1046935.html

[raw jasper]

https://tenor.com/view/must-unsee-spongebob-washing-eyes-cant-look-gif-14237119

[late fulcrum]

Toy Story was a disturbing film in several ways

[raw jasper]

I had actually managed to forget about mx demon baby over here

[late fulcrum]

You're welcome!

[tardy badger]

Still 81 available

[raw jasper]

What backup solutions are y'all using?

[ebon dew]

https://tenor.com/view/moving-gif-4824853

a 2nd hard drive on every PC with automated batch scripts because I've come to loathe raid solutions.

it ain't pretty but it works

[raw jasper]

I fear having the drive on the same system being backed up may not be optimal

In case the system is ravaged by a power failure wiping the disk, some sort of botched OS upgrade, or viral infection

[fossil dawn]

Duplicati to a USB hard drive connected to my router (it has some very basic NAS features) but I'm not 100% happy with this

(and since the router with the USB drive are on top of my PC case, there is zero protection in case of fire, etc)

[ebon dew]

possibly but if it's just the user file and not the OS everything else is easily replaced, reinstalled, and wiped.

[raw jasper]

Technically one can get reinfected by infected user files, if the virus is advanced and persistent enough

[ebon dew]

well that depends on the data. is it your data or company data? offsite backups can be handy but are expensive solutions.

ahem, i should say, private offsite backups because anyone can use gdrive or dropbox freely... but you get what you pay for.

[raw jasper]

My bandwidth is bad enough that's not an option :)

[ebon dew]

some companies specialize in offsite backups by sending them physical discs in the mail. you know like netflix in reverse for hard drives. 😛

[raw jasper]

My budget is bad enough that probably isn't an option lol

(Which probably answers your question, "is this yours or your company's?" :P)

[ebon dew]

yes those are corporate solutions and they do offer to transport them in armored trucks... there's a backup solution for every situation.

[raw jasper]

that's gonna be the most disappointed burglar ever

"There's just a bunch of harddrives here!"

:P

[ebon dew]

if you don't want to spend money on bandwidth then just get a duplicate drive, get some backup software or setup a batch/cron.

[cunning frost]

I just finished setting up my backups, which is pretty expensive upfront but it's something I worked on over the years.

[burnt tendon]

I have a blob of backup-y systems.

Backblaze is pretty great for all-you-can-eat backing up of a single Windows machine.

[ebon dew]

yup backup of your backups too, redundancy helps

[burnt tendon]

I also tend to keep all of my drives as RAID pairs just because it reduces a bunch of probabilities.

I also have scripts that do backups of my online systems to B2 (same ideas as S3) buckets.

[cunning frost]

Basically, a 32TB NAS that serves as an access hub so I can use my data whatever PC I use (one for gaming, one for everything else since it uses less power) and that's backed up by a 10TB external and a 4-bay external enclosure. All of them JBODs just in case anything happens. Then the really important stuff are in the cloud, which is also backed up in those drives.

[ebon dew]

until one fails and you have to replace it then you face backup downtime, so typically have a whole bank of spares ready to slot in

[burnt tendon]

A lot of the time, because storage is cheap kinda, I end up with 2 backup scripts, one backs up a coherent file-level backups, one that does a dump.

And I really ought to do another bulk copy to the backup spare USB drive.

[cunning frost]

Yup. Storage is pretty cheap especially if you time it right.

[ebon dew]

NAS is a good home solution but hot swapping raid is nice... when it works.

[cunning frost]

I got my 16TBs on Christmas surplus for like 40% discount.

Having a NAS is easily an option worth considering. It allows for a lot of possibilities outside just backup and external access, though that's a big thing already.

[ebon dew]

Yup I have about 20 but only using about 5 and it's spread across 3 redundant systems.

[cunning frost]

Funnily enough, because of my backup setup I don't need a huge case for a PC anymore. Everything's just shared with one local drive in case I need quicker access.

[burnt tendon]

I worked on one of the NAS products and I don't trust any of them now.

[ebon dew]

couple months ago a Samsung 750 bit the dust. was back up and running within a day after reinstalling the OS and the inevitable 20 update/restarts.

[burnt tendon]

Oh yeah, heh, so I got a giant SuperMicro tower case when I was in college and I have just kept upgrading it, so it's kind of a source of pride that I keep it going.

[ebon dew]

I got one of those huge ones and quickly found out the amount of heat with a huge bank of platter drives eventually kills the ones on top faster.

[cunning frost]

lol. Now I'm running one of those lenovo miniPCs for non-gaming stuff and it's really telling how much you can do now with a CPU from 2017 on an SSD with Linux.

[ebon dew]

SSD's are super nice for space saving but sometimes when they fail there's no warning. at least with platter drives you'll start getting bad blocks and slow degradation.

[raw jasper]

....you'll also start hearing things 💀

[ebon dew]

sometimes yes

[raw jasper]

(sometimes indeed)

[tardy badger]

Wow, still 50 pi 4 2GB in stock

[ebon dew]

I already have one still in the box. :/ Meant to set it up for klipper and octopi just never got around to it.

[solar kindle]

Yep, we have a household NAS, and I use it to sync folders between 2 different computers (Lenovo laptop in living room, Chromebook in lab). When I edit a file on one, it gets synced to the NAS, which then updates the other. Doesn't matter where I make my updates; the files sync in all 3 places based on where I last hit "save". I can start something in the lab, and pick up where I left off in the living room. I use this primarily for 3D design, bookkeeping, and writing.

[ebon dew]

They can be nice when they work. It's when things go wrong with a NAS that things can go from bad to worse.

[tardy badger]

I have a NAS I should probably have setup for time machine backups on my aging MacBook Pro

Or at least backing up non-iCloud folders

[raw jasper]

I would not suggest that

time machine on NAS is, IME, fairly weird unless you have very fast drives

[ebon dew]

The bad thing about that type of setup is if you restore you don't know if you're restoring something that caused the failure in the first place (unless it was a hardware failure).

[raw jasper]

It also uses a sparse volume file instead of directly writing to the share

[ebon dew]

Then you spend hours and hours investigating and by that time you could have just backed up all the necessary files, started from scratch, and work with a refreshed system.

[umbral phoenix]

you can also de-throttle Time Machine https://eclecticlight.co/2022/02/28/does-removing-i-o-throttling-make-backups-faster/

[raw jasper]

oh really? I should try that

Thx for the tip!

[umbral phoenix]

to me, 1st new TM backup is a pita, but after that it's pretty invisible (backing up several Macs to external disks on one of the Macs (no NAS, no RAID)

each Mac gets backed up to two different disks, Time Machine alternates between the two

[raw jasper]

Ah yeah, I hear it's much faster on ext. disk

I've been thinking of using good old rsync to a UNIX filesystem because I probably can't afford another mac if this one breaks! xD

[umbral phoenix]

I have a relative who does something like that, seems to work pretty well

[raw jasper]

I mean, I essentially only care about my $HOME

[tardy badger]

it's supported on it

my NAS has a feature for Time Machine

the biggest issue is I don't really have enough space on my mac for a time machine backup xD

[raw jasper]

I know it's supported, I've tried it. It tends to behave strangely if your drives or network or NAS or any combination thereof are slow (~25Mb/s in my case)

I remember it timing out all the time and stuff

[tardy badger]

I've never run into that issue

I don't use it because of the lack of drive space on my mac

[raw jasper]

fwiw, I'm on macOS 13.5

Perhaps it's better on earlier vers?

[tardy badger]

it was back in 2020 when I tried

I need to set up a new network storage server

[raw jasper]

Hopefully not a real server haha

[tardy badger]

I plan to set up a git mirror for my github account

[raw jasper]

Unless you have a separate room

[tardy badger]

I have a basementt

[raw jasper]

Ah, yeah, that makes sense

How much power would one proper server "burn"?

[tardy badger]

network file servers don't need a ton of power

[raw jasper]

Yeah, noise is a problem though if you you're in an apartment ;)

Gotta sleep and not lose my hearing somehow :P

[ebon dew]

Yeah because of the discussion I had the other day about power backup systems I got beefy UPS for my PC and router.

having discussions about these types of things can serve as a good reminder not to forget the little day to day stuff, temporary has a habit of becoming permanent.

like putting off your car registration

until you get pulled over and suddenly figure out you could get a ticket for not having done that... literally happened to me yesterday.

[raw jasper]

Unlike home backups, that can actually get you in trouble with the law

(ninja'd)

[ebon dew]

pretty sure you won't get fined for not doing home backups lol

but i swear if they could... they would.

[raw jasper]

Unless you're a freelancer or something, in which case, they're not home backups any longer, are they?

[ebon dew]

well that's different yes, that's work and falls into a different category

[fierce prawn]

What was the language you hate to use at first but now like it and why

I will start with me first
I recently had to make a small media player for jellyfin but they only have a TS lib (typescript)
After a few hours I liked it
It's import syntax make sure I only import what I need
Its typing system and auto provide options for use in normal parameters and list parameters and all those lib docs available just by hovering on the function on vscode and letting me know if the type is wrong and what are the correct ones are
Oh it's struct is also json too
I love json

[gritty galleon]

I love JSON! Especially when it replaces XML.

I am not fond of Javascript and don't expect that to change anytime soon.

I used to dislike (not hate though) Python (ducks, I know this is the wrong place for that) but working in CircuitPython has brought me around and now I'm mostly loving it. Still can't say I'll ever be crazy about the indentation thing but many other aspects of it do make me happy.

[raw jasper]

I used to dislike python, now have embraced it for run-once workloads and glue code

It's definitely an acquired taste

[ebon dew]

Java, I hated it at first but then became fond of all the periods.everywhere.for.everything.

[raw jasper]

As far as I'm concerned, anything that replaces XML and isn't XML But Properly Done[TM] (as if what XML needed was More XML) is good news to me ;)

[glad ruin]

Python is pretty much the ideal glue logic language. If you need an adapter to fit a square peg in a round hole it is excellent.

[raw jasper]

And people say python provides no ways to shoot yourself in the foot.... :P

[glad ruin]

Python gives you a GAU-8 pointed at the ground.

[tardy badger]

Python provides so many ways to use the rope it gives you 🙂

[raw jasper]

danger rope

[tardy badger]

The proper term is nope rope

Or danger noodle

[raw jasper]

https://tenor.com/view/snake-scare-revengeoncat-cucunber-gif-19066401

[tardy badger]

That is also me when I hear anything buzzing by me outside

[raw jasper]

Ugh. I hate bees

[tardy badger]

I’m a big sissy around bees

I love the work they do

Just from a distance

[tranquil swallow]

I wish all bugs would go extinct

[raw jasper]

It's simple. If bugs go extinct, you go extinct

[tardy badger]

Bugs are vital to our ecosystems

Except deserts, I’m not sure the purpose they serve in deserts

They serve a purpose in desserts though

[raw jasper]

I guess dung roller beetles provide a vital service ;)

[tardy badger]

Dung beetles

[raw jasper]

(Also the whole aiding in decomposition thing)

[tardy badger]

Fungi do fine

[raw jasper]

Well, more makes faster

[tardy badger]

Fungi and [sic] bacteria do wonders for decomposition

[raw jasper]

I was reading about a particular type of vulture that, when it became threatened and its population decreased, caused disruptions in the local ecosystem due to carrion accumulation

Apparently local shepherds would put rat poison into their dead sheep because they saw the vultures as a bad omen

It's been a long time since I read that story though, so my memory may be far from perfect, and don't expect a citation :P

[burnt tendon]

Without vultures, it's hard to carrion.

[gritty galleon]

Nothing compares to C, though, where not only can you shoot yourself in the foot in myriad ways, you can also completely overwrite your foot with a cat or have a null foot which causes you to crash whenever you attempt to use it.

(And I do still love C, for all its faults)

Wow the new batch of Matrix Portal S3s sold out while I was attempting to buy some (more)!

[limpid sedge]

im using the documentation for BNO085 default on o n adafruit blog

i pluuged everything in and am using default example code but i get no I2C device found at address

[ancient rivet]

use an i2c scan to help determine what addresses are found:
https://learn.adafruit.com/scanning-i2c-addresses/overview

[limpid sedge]

will try t his rn

[raw jasper]

overwrite your foot with a cat in C
Yeah, I'm stealing this :P

[limpid sedge]

when i r un t he scan i get

module has no attiribute I2C

[raw jasper]

your board possibly doesn't have built-in I2C?

[limpid sedge]

pico

[raw jasper]

You could use the busio-based solution outlined in the comments

[limpid sedge]

ah on the specific pins im trying to scan?

[raw jasper]

guide says
# i2c = busio.I2C(board.GP1, board.GP0) # Pi Pico RP2040

[limpid sedge]

i ran that

i get empty scan

[limpid sedge]

returns empty list

[raw jasper]

Just to verify, are GP0 and GP1 where you have plugged your peripherals in?

[limpid sedge]

yes

gp1 is scl

gp0 sda

power light is on

[tardy badger]

Anytime my wife hits a milestone in her technical degree (she’s coming from not doing tech before), I send her this gif

https://tenor.com/view/proud-of-you-psych-gif-22605415

Because it’s like my favorite thing from the TV show Psych

And also I’m proud of her

Doing something that’s not natural feeling and moving forward is a big accomplishment

[mystic sphinx]

Hi all, a friend of mine designed me a PCB. Went above and beyond with part sourcing however, the pick and place files are different from whats expected on JCLPCB. I've recieved an mnb file and mnt file. How do I turn these into a csv?

[crystal ore]

Those should just be text files with the same sort of info, so you may be able to turn them into a CSV with just a simple text-editor find and replace of spaces to commas. The .mnt will be top-side assembly and the .mnb is bottom-side (which your board may or may not use). I'm not sure what format JLCPCB wants off the top of my head, so there might be a little more data massaging to do.

[mystic sphinx]

Oh sweet, okay. thanks!

[tranquil swallow]

How important are draft angles in molding really, I think I’ll just ignore them

[glacial wigeon]

i think for deep features, a perfect 90 degree angle means you have friction removing the part the entire way

but a draft angle means the gap increases as you pull the part out, and it rapidly comes loose

[rapid geode]

they are the single most important thing.

[limpid sedge]

ive isolated the isssue

it seems to be that the i2c is getting connected but not completly becwuse i dodnt get the pull check wiring error

if i unplug i get that but if i plug i get not at address

its kinda strange

[solar flicker]

I got one little quick question:
Where is A1 pin at Raspbeery Pico W?
I Googled but couldn't find it

Nevermind, found in 2nd search page

[limpid sedge]

alright i have some updates regarding my BNO085 situation

I2c still doesnt work same error as above
UART RVC doesnt work, i connect as it says in the diagrams but i get nonetype isnt subscritable
regular UART works for now

[limpid sedge]

ill summarize it

how do i get something like this SS(from BNO055 tutorial) with BNo085, im most interested in the left column of stuff

should i use UART or UART RVC?

[thick wind]

I would believe any interface would be able to return that data, so long as you enable either the geomagnetic or game rotation vector reports.

The Bno055 webgl example specifically uses the I2C interface because it doesn’t have the option for uart or spi

[raw jasper]

nonetype isnt subscritable
Yeah, this message can be a bit confusing. In this case, it most probably means it wasn't able to get anything out of the sensor, and hence it returned a None object

It's a bit hard to tell without the code and exact error message though. Can you share them here?

[limpid sedge]

yea sure

[limpid sedge]

ok. after doing a little digging, ive found out that I need the data output in a 360 degree euler orientation scale

[limpid sedge]

im following wiring and code from adafrut learn blog for RVC

https://learn.adafruit.com/adafruit-9-dof-orientation-imu-fusion-breakout-bno085/uart-rvc-for-python-circuitpython

[raw jasper]

where do you get the NoneType error?

[limpid sedge]

line number 23

yaw, pitch, roll, x_accel, y_accel, z_accel = rvc.heading

[raw jasper]

Can you post the full backtrace?

[limpid sedge]

yea sure

[limpid sedge]

there

[raw jasper]

try doing uart.read(1)

and see if it returns anything

[limpid sedge]

alright in the loop?

[raw jasper]

nah, just in a REPL somewhere

initialize the UART and try reading from it

import board
import busio

uart = busio.UART(board.TX, board.RX, baudrate=115200, receiver_buffer_size=2048)
print(uart.read(1))```

Something like that

[limpid sedge]

ah ah ok

i try now

says None @raw jasper

[raw jasper]

Yeeeah, it appears you aren't getting any data off your UART

[limpid sedge]

hmm, thats odd cause these same pins work for the regular UART non RVC

and i checked i am setting the correcte pin to high

[raw jasper]

I do not know anything about the sensor to help you

Sorry!

[limpid sedge]

np @raw jasper that was a good rule out

on another note, anyone know how i can convert 4 point quaternion to 360 degree Euler scale?

or also why I get a division by zero error while running the heading example

[raw jasper]

There's an entire wikipedia article about it ;)
https://en.wikipedia.org/wiki/Conversion_between_quaternions_and_Euler_angles

It looks fairly taxing

(lots of fp math)

[limpid sedge]

ik ... i mean is there a python function somewhere that i can import or use

[raw jasper]

Ah, I wouldn't know

[limpid sedge]

also another issue i get index out of range or packet error during calibration

[tardy badger]

Finally ordered RPGA Feather PCBs 🤓

In two weeks time I should hopefully have the first prototype assembled

[tranquil swallow]

Domain I used to own but lapsed on is now selling for $3000 😭

[crystal ore]

"Selling for" != "sold for". Very often domains will be on the market for a decade under an inflated price, with no takers.

[tardy badger]

I have a domain name worth like $2k but no one has offered to buy it lol

I’ve got a domain too for an eventual social media platform I’ve developed off and on worth ~$1000

[late fulcrum]

My sweetie wanted a particular domain once but a squatter wanted way too much money for it, so we just waited until it lapsed, and picked it up for $8. A while later, someone offered us $1800 for it, so we sold it.

[tardy badger]

hehe nice

my website oaksemi.com (nothing tied to this yet) is worth like $1500 apparently

[rapid geode]

sell!

[tardy badger]

I'm intending on launching a website with it... eventually

https://tenor.com/view/eventually-amanda-bynes-amanda-show-procrastination-procrastinating-gif-20115206

My alter ego for projects in the Procrastinator

[late fulcrum]

You're far from alone in that!

[keen sparrow]

I know this is the adafruit page, but im using a pi pico in conjuction with a pi 4. Since both have 40 pins, does that effectively double my pin count?

[tardy badger]

in a sense

[keen sparrow]

I wanted to use a metal heatsink with fan, but it wont fit with the witty pi 4

So that is where the pico comes in as my micro controller

I may be over engineering this

[tardy badger]

better over than under

[keen sparrow]

That is fair

[half plank]

does anyone kown of a good pcb file for a 10 bit adc

[limpid sedge]

i get error

RuntimeError: All UART peripherals are in use

it happens on the line where i define a second UART item

[tranquil swallow]

How expensive would it be to have an adaptor for a flex cable to 5 pogo pins made, it would need to conform to a custom form factor for an existing product

[raw jasper]

It's probably some bot seeing the "semi" suffix

Dreaming of starting an IP consultancy?

[tardy badger]

that's the plan

[tardy badger]

it's AI evaluated values so it's definitely subjective.

[raw jasper]

Ha. "AI"

[tardy badger]

those are the claims by GoDaddy 😛

[raw jasper]

Yeah, most probably AI using the power of UNIX and grep

Maybe some perl sprinkled on top

Won't blame them for trying to ride the wave though

[tardy badger]

perhaps sprinkling in data from crunchbase on company values

[raw jasper]

You can probably do that with the right perl incantation

[tardy badger]

oh probably

I learned recently there's a special version of grep that can use perl regex

[raw jasper]

I think GNU grep can do that with -P?

Probably not the case with macOS grep

Yeah, macOS grep doesn't have the switch (obviously, since it's BSD grep), while GNU grep on my linux machine does

BSD/macOS find is fairly different to the GNU one too, which can murk some shell scripts up if you aren't careful

Portable shell scripting is hard!

[tardy badger]

Indeed

[raw jasper]

There are linux distributions that try to create a GNU-free system. I think alpine linux is one

[tardy badger]

RHEL kind of does it's own thing

[raw jasper]

with the source code. I think they are still running GNU underneath

Funnily enough, no amount of licenses was able to save essentially all open-source code from being ingested with impunity by the AI models

My initial guess was that their outputs would be considered "derivative works". So far, that does not appear to be the case (possibly due to the lack of relevant litigation)

[dusty citrus]

Eh those licenses as I see are made up protection made by comunity/industries members using copyright laws, ence there's not really a law.

Besides between the paper and the facts there's the sea,
so once something it's out there, it will be ripped off in one way or another if it has potential, you like it or not

[raw jasper]

Theoretically, when you redistribute the licensed program, you enter into a contract with the author

[tardy badger]

closed source also doesn't mean people won't copy it and monetize off the copying

but copyright law does provide protection for licenses

including open source

[raw jasper]

Copyright or contract law

maybe and

Depends on the locale

[tardy badger]

the issue is, open source rarely has the money to actively fight infringement by million/billion dollar entities. so they don't.

[dusty citrus]

It may depend on the state, but here it's just some really generic thing, that has plenty of issues and ends up being exploited only by those who have enough money to sue

[raw jasper]

Speaking of, is the writers'/actors' strike ongoing?

[tranquil swallow]

The private sector is built on stolen open source code

[dusty citrus]

Sorta ninjed by skerr

[tardy badger]

it is ongoing

[raw jasper]

thx for the info

[tardy badger]

I doubt we'll see any meaningful resolution to the writers/actors strike anytime soon. The best thing we can do is support them in whatever way they ask us to. like donating money to help them pay rent and stuff so they can continue to strike, boycotting things they are wanting boycotted, not scabbing.. etc..

[dusty citrus]

If ai ever worked, I wouldn't be that mad at it
Now chatgpt is like an hardcore censured version of google and long no sense

[raw jasper]

As far as I am concerned, it goes beyond writers and authors. Whatever comes out of this will affect every profession affected and every profession potentially affected by "generative AI"

[tardy badger]

If we embrace AI for creative/human centric work, we're giving in to mediocre. We shouldn't do that.

[tranquil swallow]

How long do you think until AI automates blue collar jobs like farmer and electrician, I hope it’s not too far from white collar work

[raw jasper]

farmer/electrician
these involve manual dexterity, so, pretty long

[tardy badger]

you won't ever be able to automate electricians work.

you can augment it, but never fully replace. not at the rate we're going.

farmers augment operations with robots to improve productivity because there isn't enough workers.

[dusty citrus]

Or rather slaves

[raw jasper]

I am reminded of Tom Scott's video on generative AI, where he essentially said it was scary to him because we don't know where on the sigmoid curve of the technology's progress we're on

At this point, it seems it's plateauing though

[tardy badger]

Farm workers do often get paid paultry wages for the work they do

but plenty of farms do offer good hourly wages for their workers. it's mostly corporate farms that abuse workers, especially migrant workers.

mostly because they know they can get away with it.

[raw jasper]

(I wonder when we'll get a citation for veering off the server rules)

[tardy badger]

worker protections are not that great for farm workers. that should be something that changes. But technology can definitely make the life of farm workers easier

I'm all for making farm work safer through tech

[raw jasper]

I'm all for making all work safer

[tardy badger]

(veering back on course)

absolutely

[dusty citrus]

Mah the other way around is also true, smaller farms have less control, so they can exploit more...
They daily complain to not have anough workers... Then also refuse to talk about the pay, time and work conditions

[raw jasper]

As a final note, quoting somebody who I don't remember, "we should be making exoskeletons, not robots"

[tardy badger]

i'm all for exoskeletons

I'd love to be able to lift unimaginable weights

but maybe not let Hammer Tech build the exoskeletons 🙂

[raw jasper]

(As in, we should be making tools that help and serve the interests of the people, not replace them)

[dusty citrus]

That was the thinking times ago

[raw jasper]

(If somebody finds or knows the source of that quote, I'd really appreciate a ping)

[tranquil swallow]

I’ve been waiting for exoskeletons like the ones in call of duty to become commercially available for a decade

[tardy badger]

I like the jetpack suit that one guy made

[raw jasper]

There's a Japanese guy making a bunch of air-powered hovercrafts for the fun of it

[tardy badger]

it'll get commercial value through initially providing military value

[tranquil swallow]

Sad

[raw jasper]

who are hammer tech?

[tardy badger]

Hammer Tech is an Iron Man 2 reference

ah sorry, it's Hammer Industries

lead by Justin Hammer

[dusty citrus]

Anyhow if lk99 proves to be real, I'll laugh hard to "researchers" losing to "amateurs"

[raw jasper]

(that is the case for most technologies, things like integrated circuits, the general-purpose computer, FPGAs, many materials we are currently using at home, the internet, are products of .mil R&D which later seeped into the civilian sector)

[tardy badger]

https://marvelcinematicuniverse.fandom.com/wiki/Justin_Hammer

[tardy badger]

this is why I made the comment 🙂

[raw jasper]

Medical ultrasound technology was developed by somebody deciding to try applying a tool used to check for damage on military ships on patients

...or at least that's what I remember

[fleet rampart]

It’s definitely real

I’m a hopium addict

[tardy badger]

the technology behind MRI was discovered by Neil DeGrasse Tyson's mentor

[fleet rampart]

https://twitter.com/andercot/status/1687740396691185664?s=46

Andrew Cote (@Andercot)

First video of LK-99 Full Levitation, aka flux-pinning

This video was just posted to the Chinese video-sharing site BiliBili and claims to be a highly pure synthesized sample of LK-99.

What is the physical phenomenon behind this and what does it mean?

Levitation of…

Likes

7876

Retweets

1920

▶ Play video

Twitter · Aug 5, 2023, 8:20 AM

Big if true. Large if factual

[raw jasper]

A video of a thing levitating doesn't tell me anything

[tardy badger]

We've known that hot super conductors existed mathematically. it's cool to see it possibly be entering a new era of superconductors.

[raw jasper]

If multiple third-party labs confirm properties of the samples they were sent, I'll believe it

[tardy badger]

apparently three labs have confirmed LK99

[raw jasper]

...and that will be the bit of good news for the year

[fleet rampart]

I assume that defense has had room temp superconductors for a long time.

[raw jasper]

accompanied by (Western people) seeing major global warming in action (the "find out" part of it), and who knows what else

[tardy badger]

https://www.nextbigfuture.com/2023/07/lawrence-berkeley-lab-simulations-support-lk-99-superconductor.html

[fleet rampart]

I don’t have a good tin foil hat emoji but pls fill in yourself :p

[dusty citrus]

Magnetometers cooking proprieties discovered by a dude playing around
Tesla loved playing around without making endless formulas first
Yet somehow it's more important how you present your paper first

Not a specific issue of lk99, whenever it proves to be fake or true eh

[raw jasper]

No idea where the dude playing around story comes from. AFAIK it was some lab in (South) Korea

[fleet rampart]

The comic sans commentary on hacker news and Twitter was so insufferable

[tardy badger]

hot super conductors could revolutionized a lot of industries.

[fleet rampart]

I hate taste makers and navel gazers more than anything

[raw jasper]

then don't read twitter or hn haha

[tardy badger]

particularly high speed travel like that done with maglevs

[raw jasper]

Shin-Shinkansen!

[tardy badger]

imagine the energy savings

[fleet rampart]

Application I was looking at were SQUIDs (which are very sensitive magnetometers using super conductors) for magnetomyography as opposed to like electro sensing for EEG/ECG/EMG. Because previous super conductors had to be held way below room temp they had to be placed several centimeters from the patient.

[raw jasper]

(The joke being that shinkansen, the Japanese word for bullet train, means "new main (train) line")

[fleet rampart]

So we will probably get very good brain sensing applications soon

[dusty citrus]

Nah, just that all the articles that I've read as a counter argument they say "amateurish"
Like who cares, tell me if it works or not, if you know nothing don't follow the hype to make money through your ads

[tardy badger]

ah, yeah.. that's a good application

[raw jasper]

I'll believe it once I see it

[tardy badger]

we at least know through simulation that their claims could very likely be correct

[raw jasper]

Fact-checking any of this is way way above my pay grade :P

[tardy badger]

Lawrence Berkley National Labs (funded by US gov) was able to show that it's possible.

[raw jasper]

Hence the "I'll believe it when I see it" comments haha

[fleet rampart]

The body attenuates electrical signals a ton. Hard to get them out of the body when we’re just water. Your body doesn’t really attenuate wrt magnetic sensing

[tranquil swallow]

Do room temperature superconductors make maglevs viable

[fleet rampart]

more viable

Presupposing that you can get them to support enough weight

right now some samples of LK 99 can’t even support themselves totally

[tardy badger]

This means the material would be difficult to synthesize since only a small fraction of crystal gets its copper in just the right location.

[raw jasper]

Aren't maglev trains a thing?

[tardy badger]

they are

but currently they are expensive to operate

[fleet rampart]

Wonder what the energy consumption of maglev is

[dusty citrus]

Also, there are few trains operative around the word, due to cost

[raw jasper]

If this pans out, there's probably an entire class of these compounds

One of those will hopefully be producible at scale

And/or industrial R&D will "fix" it

[tardy badger]

this part we've known for a while. it's actually being able to synthesize them is the issue.

[fleet rampart]

I heard estimates of 5-10 years. I think sooner than that in medical/non-consumer applications. But it will be extremely expensive.

[raw jasper]

I wouldn't know, I haven't been taught the relevant physics and/or materials science :P

[tardy badger]

hence LK99 is cool, but it will likely be incredibly difficult to make it viably in large quantities while getting consistent results.

at least now anyways.

give it another 10-20 years, we might see a handful of easier to synthesize hot super conductors.

[raw jasper]

In any case, it's a conductor, not a semicon. It'll probably not revolutionize computing :P

[fleet rampart]

I think there will be nation state level funding for this family of superconductors

[raw jasper]

There already is as far as I know

[tardy badger]

hot super conductors will improve quantum computing

[fleet rampart]

Sino American fighting over it

[tardy badger]

but not traditional computing

[raw jasper]

Just like with cancer (and other major disease) treatments

[fleet rampart]

I think you’ll see some very nice high value high q small footprint passives soon haha

[tardy badger]

we use super conductors to help make quantum states stable

[raw jasper]

indeed

I was thinking traditional computing

since that's what I have right in front of me haha

[dusty citrus]

With the covid vaccines they were quite fast devoloping them, but somehow forgot everything thanks to putin
I wonder if he's the founding titan

[fleet rampart]

Woah imagine the other way. Trying to get impurities in your lk 99 to target specific values. Wonder what we could use even the terrible samples for now

[raw jasper]

I hope they'll one day develop longer-lasting (and more general) SARS-CoV-2 vaccines

Some US Army-backed lab was testing a pan-coronavirus vaccine. I wonder where in the pipeline it is now

[tardy badger]

I think our quest for hot super conducting materials will lead to breakthroughs in semiconductor technology

[dusty citrus]

It seems that they just forgot about it
Building weapons, makes more profit

[fleet rampart]

I’m huffing hopium. I want to live in cyberpunk 2077 but also somehow utopian

[raw jasper]

"Cyberpunk" reality is incompatible with the idea of utopia

brb, I'm getting my popcorn, we're seeming to be trying to speedrun the mod warning

[fleet rampart]

What I really want are better human-computer interfaces. Maybe Apple will make them mainstream w/ the vision

[tardy badger]

delusions of grandier can make you forget a lot of things.

[tranquil swallow]

I intend on buying a vision

[raw jasper]

Look at mx money bags over here :P

[tranquil swallow]

I’ve been waiting for well integrated eye tracking hardware for sooo long

[fleet rampart]

I hope it’s actually game changing.

[tranquil swallow]

There is so much potential

[raw jasper]

I'd recommend holding off of it until the market stabilizes

Lest you are stuck with an expen$ive unsupported brick

If you are so intent on trying it

[tranquil swallow]

Yea, I’m in no hurry but I’ve messed around with the sdk a bit

[fleet rampart]

When normies are using yet more integrated wearable computers? More money to be made. Wackier concepts. Glasses? Bone conduction headphones? Subvocal speech?

[raw jasper]

Wearable computers are creepy

Also please cut it with the "normie" terminology

[fleet rampart]

[tranquil swallow]

What I want is a something akin to telekinesis with brain computer interfaces, perhaps accomplished with drones or a grey-goo type mass

[fleet rampart]

Wearable computers are going to see adoption way before implants. I don’t think consumers will take implants for a long time.

[fleet rampart]

I want the universe to be turned to Paperclips

Smart phones are wearable computers in a bad form factor

[tranquil swallow]

Yea

I’d like to see phones replaced with AR devices, maybe something in a contact lens. But the vision pro is close enough

[fleet rampart]

Contact lenses are a 10x over glasses from what I’ve seen

Even the displays are very hard

There was a startup doing contact lenses. Lemme find it

https://skarredghost.com/2023/01/12/demo-mojo-vision-ar-contact-lenses/

[late fulcrum]

But not Clippy, right? Right?

[fleet rampart]

I’m gonna be 100% honest. Clippy was before my time.

[late fulcrum]

Fair. I'm just being silly

[fossil dawn]

Clippy was before 1707-1783? 🤯

[fleet rampart]

Clippy clones

Have you ever played universal Paperclips? My go to mindless long flight game

[raw jasper]

https://tenor.com/view/clippy-microsoft-office-word-publisher-gif-5630386

[fleet rampart]

Clippy has 100x the soul of Cortana

[rapid geode]

what about cortana with a kitten?

[half plank]

How can I increase the voltage that an analog pin can read like 5v is now the limit. What about 20v

[tardy badger]

You can attenuate it with a voltage divider

[half plank]

Could you send me a diagram

I have basic understanding

[tardy badger]

https://www.ti.com/lit/an/slyt359/slyt359.pdf?ts=1691272615306&ref_url=https%253A%252F%252Fwww.google.com%252F

This is for differential op amps, but the same concepts apply

[raw jasper]

These look.... disturbing

[half plank]

Thanks

[uncut trench]

A little late with this, but I was just in my Doctor's office last week getting a covid booster, and we got to talking about this very topic. There's a bunch of research being done, trying to produce an inert vaccine that (A) looks like the unchanging part of covid to the immune system, and (B) doesn't actually do anything to a human when injected. This would then be the hallowed universal covid vaccine.
They understand the theory behind how to do this, but getting it done in practice is a whole different can of worms. Plus we got a very skewed view of vaccine development with covid. That was researched, developed and pushed through the approval process in record time. It usually takes years (sometimes as many as ten) for a vaccine to go from start of reserach to something that can be administered.
However we were seriously under the gun with covid, so that got railroaded through the whole process in a little over a year. Now that we have workable vaccines, research on universal covid vaccines is happening, but don't expect to see results for several years.

[south light]

Cousin works at astro zeneca. Apparently the vaccine was even tested and trialled more thoroughly than you'd expect for such a short time, as in, more than they normally would.

That years long process is 99% waiting for approvals usually, that's basically the difference for this one, those approvals were bumped to the top of the review queues.

[raw jasper]

(Don't worry, I know how the normal drug development pipeline works. I was just wondering whether it's still in there or whether it failed in phase 1, since I seem to remember it had reached that :) ).

Your country still does boosters? That's good

Looks like one of them (hoping to provide longer-lasting protection against multiple SARS-CoV-2 variants) has passed phase 2:
https://journals.plos.org/plospathogens/article?id=10.1371/journal.ppat.1010870

That's good to know

Here's a nice overview article:
https://absolutelymaybe.plos.org/2023/04/26/pancoronavirus-vaccines-update-lots-of-preclinical-results-another-trial-underway/

[raw jasper]

TIL mIRC is still under active development O_O

[glacial wigeon]

😮

[opal night]

Do you guys have any suggestion for college projects ?
Something useful but the club I'm in has given be basically 0 budget around 40 $
I had the idea of replicating Ben eaters 8 bit CPU on a bread board but another member wasn't too Into that

[raw jasper]

You could do a project mapping combinational logic into EEPROMs

There's already a lot of prior work, but I think it'd be interesting to implement at least some of the stuff by yourselves

[turbid panther]

Smallest programmable BT 5.1 microcontroller available (ac6368a), IT'S NOT OTP! Could be great for a small BT to serial connection

[raw jasper]

There's a π-based pun to be made here, but I can't think of something :P

[crystal ore]

Unfortunately the chip only supports the older BT 3.14 protocol.

[turbid panther]

you know JieLi? the chips in cheap BT speakers are made by them (like the AC6905a)

[raw jasper]

Is there any English documentation?

[turbid panther]

Yeah their datasheets are in english. I use google translate, I 'm romanian

[rapid geode]

mmmm

[raw jasper]

Looks fairly ripe

[glad ruin]

What? No. Give it a week.

[raw jasper]

...halfway ripe :P