To summarise
#general-chat
hasty wedge
jagged citrus
true
hasty wedge
I just wish Broadcom die
olive dome
technically it does, it has brought by Avago
hasty wedge
anyway
not talking about that Broadcom SoC
I am in love with what Pi 5 looks so far!
Having RP1 also means that custom open source firmware efforts can focus on more crucial features like HDMI and have things like GPIO and SPI works out of the box
as long as Raspberry Pi can release RP1's reference manual
raw jasper
From apple silicon to raspberry silicon
hasty wedge
yeah
raw jasper
Fruity ARM silicon
hasty wedge
but the goals are different
apple silicon is to lock down
raspberry pi silicon is to open up
raw jasper
Funnily enough, it was the cheapest ARM workstation option for some time:P
No idea if that's still the case
hasty wedge
Why ARM anyway
raw jasper
It's less of a space heater :P
hasty wedge
during the pi shortage when I need small computers for projects I just pick up used x86 thin clients on ebay
it's cheaper than used Pis on ebay!
jagged citrus
Why ARM anyway
cuz x86 stinks
hasty wedge
they are cheap tho
raw jasper
Used thinkstations were a fairly popular thing for some time too
jagged citrus
It wors becuse big
raw jasper
they are less portable though. And don't have gpio unless you get a ft232h dongle
hasty wedge
true
raw jasper
or if you count the parallel port
hasty wedge
I use a CH341A
jagged citrus
Used thinkstations were a fairly popular thing for some time too
yall gonna make fun of me but i use a 2009 workstation as my daily pc
raw jasper
Which is cursed gpio that will fry the motherboard lol
hasty wedge
because FT232H are too expensive
raw jasper
yall gonna make fun of me but i use a 2009 workstation as my daily pc
nope, no way! No gatekeeping as far as I'm concerned
Also ewaste is bad
hasty wedge
yall gonna make fun of me but i use a 2009 workstation as my daily pc
you're good
jagged citrus
nope, no way! No gatekeeping as far as I'm concerned
oh ok, gaming subreddits are crazy bro
hasty wedge
I use a 10th gen Xeon W workstation too
raw jasper
Oh. I don't hang out in those parts of the internet
raw jasper
I guess Chinese firmware hackers win again! :>
hasty wedge
it was from an unknown source from my local electronics market
and I got it just because it was cheap
raw jasper
best reason to get computer :P
hasty wedge
yeah
raw jasper
I guess if you go through the trouble to make a custom firmware to get used xeon to work on a desktop mobo, you might as well neuter the ME :P
hasty wedge
very true
hasty wedge
probably 69
jagged citrus
69
patent hemlock
the one related to beavers
hasty wedge
yeah
jagged citrus
its true!! its the d word
raw jasper
aww there's a beaver emoji!
jagged citrus
dam
raw jasper
🦫
patent hemlock
makes sense -- not everyone speaks english well enough to treat that the same as native speakers
hasty wedge
I guess if you go through the trouble to make a custom firmware to get used xeon...
it is a very decent Xeon
it's a Xeon W-1290
jagged citrus
makes sense -- not everyone speaks english well enough to treat that the same as...
is the d word a slur or offensive in some way? please tell me, english isnt my first language
hasty wedge
10 core 20 threads with 4Ghz+ turbo
raw jasper
Just run cursed numeric workloads on it to get your money's worth! :D
raw jasper
is the d word a slur or offensive in some way? please tell me, english isnt my f...
It's a curseword
patent hemlock
Xeon? you bought a hot plate? 😀
raw jasper
Not allowed here
hasty wedge
lol
raw jasper
That's all
hasty wedge
well
raw jasper
AFAIK, not a slur. Not a native speaker though, so PSE correct if wrong
jagged citrus
well, d word, i didnt know
hasty wedge
the mobo is rated at 125W
patent hemlock
is the d word a slur or offensive in some way? please tell me, english isnt my f...
it's not offensive to some -- there are certain segments of even the american population that strongly object to casual usage
raw jasper
this looks like a normal peltier hotplate
jagged citrus
forgot the /s
jagged citrus
i saw that
raw jasper
(too cursed)
Causing chaos with unicode again? :P
hasty wedge
lol
raw jasper
Nah, it's not genuine unicode chaos unless spelt in the original fullwidthｃｈａｏｓ
raw jasper
pse don't get us all banned
jagged citrus
done
raw jasper
Let's talk about something more productive instead
jagged citrus
d word again
jagged citrus
this is Ryzen
i forgot how to read
raw jasper
Ethernet controller: 以太网8
Interesting how "ether" is spelled in Chinese
And that the next thing is the word for "net", and not a phonetic spelling of the English word like the "ether" before it
hasty wedge
以太 is pronouced as "yi tai" which sounds like ether
raw jasper
以太 is pronounced "i tai" in Japanese, which is how I made my guess :)
hasty wedge
they are the same
raw jasper
Of course, the pronunciation came from Chinese
;)
but why is the controller's name Chinese while the rest of the computer is in English?
I've never seen it with any other language
hasty wedge
I have no idea
raw jasper
I guess it's the driver?
hasty wedge
probably
jagged citrus
I guess it's the driver?
yeah, likely that
hasty wedge
it's a USB C ethernet converter
because I unplugged my Intel ethernet card
for a LSI SAS card
jagged citrus
Ok back to something serious
It big 😨
hasty wedge
thats a core 2 duo
raw jasper
I did not zoom in haha
jagged citrus
thats a core 2 duo
it is
olive dome
I got myself a 199USD motherboard
hasty wedge
cool
I have two
one 12th gen in my laptop one 11th gen standalone
this thing is a beast, enjoy your new Linux server!
11th gen comes with AVX512
which currently is only a Xeon Scalable feature
raw jasper
AVX512 ^_^
glacial wigeon
what? what word?
the d word, ive tripped that a number of times
glad ruin
which currently is only a Xeon Scalable feature
... unless you get a current gen Ryzen.
glad ruin
AVX512 ^_^
That actually will turn your CPU into a hotplate. Intel's early implementations of it were particularly bad.
raw jasper
That actually *will* turn your CPU into a hotplate. Intel's early implementation...
Hey, as long as the heat is the byproduct of quickly crunching vectors
olive dome
I want actual 512bit pipeline
raw jasper
place and route tool development companies liked this message
olive dome
Also power grid companies /s
olive dome
I'm still waiting for that solid fan module to release on the mass market...
olive dome
for RPI too
whole plover
@glad ruin there is no spoon
glad ruin
<@578805364019953715> there is no spoon
https://youtube.com/shorts/5oXBt4v_2lI...
Spoon?
late fulcrum
So what could be two lines of text gets converted into a synthesized voice, wrapped in a superfluous video, and takes megabytes of storage? What a pointless waste.
glacial wigeon
So what could be two lines of text gets converted into a synthesized voice, wrap...
a forum post recently cleared that up and didnt bloat it with tts and video, lol:
Eben has said Pi5 is for the maker community till Xmas with business sales in 2024, don't wait too long.
I use a $6 USB sound dongle on my Pi400.
Eben in Kevin McAleer interview spoke about Pi500 and CM5, just touching on them, not ruling them out :D
CM5 probably 2nd quarter 2024, they will need all those EMC approvals worldwide etc.
Branch
tardy badger
Twig
tardy badger
I use a CH341A
Will you use this once available?
:3
There’s so much going on with the CH645
8 usb host endpoints is a bit wilds
28 device endpoints
2 usb c PD
tardy badger
Eh, I’d just load it to be a tool for programming FPGA and stuff
Provide a cheap Ethernet PHY too
tardy badger
Sram is too small
Actually not true. Samd21 has 32kB of SRAM and can do basic circuitpython things. 80kB is more than double that so definitely possible
hasty wedge
tardy badger
It would just require someone port that specific risc v core to circuitpython
125MHz puts it solidly between cortex m0 and m4 when considering flash/sram
With the exception of the rp2040 which is… a weird in between as well
olive dome
jagged citrus
https://milkv.io/duo
I already said it yesterday you should probably avoid these risc-v boards
You could read the scrollback from #risc-v to understand my bias
But tldr: bad documentation (most of it is in chinese), propietary licenses, not all of it is open source, little to no community support.
blissful roost
NGL, that Milk-V Duo looks pretty good.
thick wind
I already said it yesterday you should probably avoid these risc-v boards
It’s certainly not for everyone, and certainly not a finished product, but someone with the right background and application could do a lot with these bad boys.
Would not recommend as an impulse buy unless you have experience building Linux systems from source code and debugging firmware and environment errors.
jagged citrus
Would not recommend as an impulse buy unless you have experience building Linux ...
Yes, theyre definitely not for beginners
thick wind
The pine Ox64 is very much in that same category, alongside many of the low cost niche SBC and FPGA modules based on chips from lesser know chip companies.
tardy badger
Yeah, it can be pretty tough figuring that out through their marketing materials
Especially for people just looking for raspberry pi replacements
It reminds me that I should finish off my DungV core
I need to do a little refactoring, change it to a 2 stage pipeline from a single cycle. Improve the instruction memory and instruction decoder, add a gpio register and controller, introduce flags for the ALU.
Then add a programming interface via SPI
jagged citrus
The pine Ox64 is very much in that same category, alongside many of the low cost...
the 0x64 uses a BL808 risc-v cpu, made by bouffalo labs. My sipeed m0 sense board (the one i keep complaining about) uses a mcu from the same company, the BL702
BL is on my "avoid" list
raw jasper
But tldr: bad documentation (most of it is in chinese), propietary licenses, not...
Now that'd be one motivation to actually sit down and learn Chinese :)
late fulcrum
While machine translation is still pretty rough, it does okay for technical documents, where the information being communicated is fairly formulaic, so it's generally not too hard to decode the intended meaning from a somewhat strange translated version.
raw jasper
(FYI deepl works pretty well these days)
IME it's better than google translate, but your mileage may vary
Also please note that whatever you submit will become part of their training corpus unless you jump for a paid subscription
dusty citrus
Now that'd be one motivation to actually sit down and learn Chinese :)
Chinese themselves forget how to read chinese...
raw jasper
I doubt that is the case :)
If you are in China, you will be surrounded by written Chinese every day
Forgetting to read will be pretty hard
Now, you may forget some disused characters every now and then
But I don't think it's as big of a deal as we Westerners tend to make it out to be
In conclusion: Do learn Chinese if you want to
Learning the characters is not going to be terribly hard
At least from my experience learning Chinese characters for Japanese
fossil dawn
IME it's better than google translate, but your mileage may vary
I really like it! However in my experience the quality really goes down if there are new lines, weird formatting or weird characters (dingbats, frames, (╯°□°）╯︵ ┻━┻, stuff like that) in the middle of sentences. (But the workaround for that is easy 😄 )
fossil dawn
Also please note that whatever you submit will become part of their training cor...
(otherwise it becomes a part of Googles training corpus 😝. Unless it's already a part of Googles training because it's on the web.)
raw jasper
(otherwise it becomes a part of Googles training corpus 😝. Unless it's already ...
(And you can pay to opt out)
whole plover
what i can say about the battery circuit is it seems to charge pretty fast, and the battery indicator does have visual changes at various voltages. in about 15 mins it went from 3.4v to 3.9v
olive dome
In general I think if the thing is very interesting for you, no matter what language (mandarin, english, C, C++, python), you will always figured out a way to read them.
I still remember the early days of ESP8266
dusty citrus
Hi Everyone! Can anybody help me, how can I extract macintosh 800k floppy .img files? I have and old macintosh, but it have only a 1.44mb drive. I want to install word and excel on this. I want to copy to 1.44mb floppies the installer files.
late fulcrum
I remember David Small's "Magic Sack" that let you read Mac GCR floppies
tardy badger
Homemade sushi night 🙂
Only things I didn’t make were the seaweed wrapper, I didn’t grow the avocado, and I didn’t farm the fish for the imitation crab
late fulcrum
My grandmother used to have an avocado tree
dusk flax
I had one, but I live in Washington State. One year it got too big to bring into the house for the winter and it froze to death. Of course it never made fruit. But we planted it from a seed from a tasty avocado...
worldly solar
🎶 Sim-ply Hav-ing
Fifth Gen Raspberry Pi🎶
tender heron
Nice
I preordered a 8gb 5. Hopefully soon enough so I don't have yo wait forever to get it lol
tardy badger
tender heron
Lol yeah, I ordered from sparkfun. I'm not sure how they're handling it totally. Hopefully I'm not like 6 months down worth of the stock on the list lol
They just said first come first served. And they're expecting their first stock to arrive end of October.
patent hemlock
saving my 💰 for solstice
raw jasper
saving my 💰 for solstice
solstice? The celestial phenomenon?
(I suspect there is some cultural context I am missing here :) )
....or is this a non-theist way to refer to the time around Christmas?
(honestly asking. English is not my native language, and I am genuinely curious)
patent hemlock
yes, i was using a non-theist reference to the winter solstice "season"
raw jasper
thanks for clarifying!
patent hemlock
not a problem!
just wait until i start using movie references from the 30's and 40's 😈
raw jasper
I mean, if you want to :)
You'll probably throw most people around in a googling loop (me included), but that's no reason to hold back :P
hasty wedge
But tldr: bad documentation (most of it is in chinese), propietary licenses, not...
the first one is fine
because I am Chinese
but yeah, the only riscv I use is CH32V series
which is open source enough to have a complete foss tool chain and no binary blob
if you care about closed source blobs then ESP32 is full of blobs
jagged citrus
if you care about closed source blobs then ESP32 is full of blobs
But the esp32 is far more popular and has a massive community
ESP32-S3 my beloved🥰
hasty wedge
I am just talking about the closed source blobs
jagged citrus
I am just talking about the closed source blobs
Oh ok
raw jasper
if you care about closed source blobs then ESP32 is full of blobs
The blobs are for the ExtraSensory Perception :>
hasty wedge
vagrant wolf
any ideas on what I can put in this space on my esp32 s3 board (preferrably i2c, since it's easier to route). thanks 🙂
vagrant wolf
buzzer is a bit to big to fit
rain cradle
if you dont have a clear idea, i would just put a I2C header (SDA, SCL, GND, VCC) so you can connect any I2C thing there (or whatever you can do with two pins)
vagrant wolf
that is also an option but it is too big, I was thinking of maybe an IMU/bme temperature sensor etc in an smd package
ember token
Qwiic connector?
raw jasper
any ideas on what I can put in this space on my esp32 s3 board (preferrably i2c,...
A silkscreen logo!
patent hemlock
besides a logo won't a STEMMA/Qwiic connector fit?
static flare
looks like plenty room for a stemma qt/qwiic
gloomy kettle
Yesterday I did my first soldering thing. I was using a soldering iron with a broad tip because it came with it, and it was hard to position it correctly so the solder would melt into the hole.
I used lead-free solder but there is nothing in the package or online about it’s halide content. Also I looked up more about solder and it seems there is a lot of negativity about lead-free solder.
I didn’t have problems with the solder itself, just getting the angle right. I also was able the rinse the tiny board well with 99% alcohol and was surprised how well the rosin came off.
I was expecting to have to scrub and cuss a lot
valid spoke
I use leaded solder for hobby stuff
You have to approach unleaded stuff differently
More heat
More flux
I would use lead free solder more if it was cheaper
gloomy kettle
Oh yeah I used an adjustable heat iron.
burnt tendon
Yah, trying to solder without an adjustable heat iron is just not cool.
blissful roost
If a soldering iron is cool, you're doing it wrong. 😛
gloomy kettle
I got one for a good price during Amazon Prime day, it’s the Weller one.
dusty citrus
I recently bought the pinecil, my getto soldering iron isn't usable anymore
valid spoke
i think you gotta go talk to a doctor
raw jasper
If your soldering iron warps reality by bending itself and pixellating the space around it, please immediately report to your nearest Reality Audit Office
strong igloo
I recently bought the pinecil, my getto soldering iron isn't usable anymore
You gotta tin that more often my guy
gloomy kettle
I noticed these weird stains like water stains on my Metro, what are they? They are on the ESP32 chip and I think some are on the board too.
They were there since I bought it
tranquil swallow
I have those on my pi4 as well
I'm guessing moisture accumulated at some point
These electronics are lazily packaged without sealed antistatic bags so it's not surprising
gloomy kettle
I just hope it’s not some horrifically toxic thing because I dropped it on the floor a few times
ember token
I just hope it’s not some horrifically toxic thing because I dropped it on the f...
I doubt it
placid sparrow
Hi all! I had a question. So I got the adafruit macro pad and I was planning to use it on two devices (mac and linux). However, I know there’ll be issues between shortcuts when writing script with the the CTRL and CMD super keys. What’s the best way around this? Should I just make two versions of scripts for each OS or is there a way to turn my linux keyboard map into mac so it actually matches the key code?
rain cradle
The other way around
Mac lets you "undo" the swap
No idea where the setting is, but i know it is somewhere 🤣
placid sparrow
I considered it but I have 2 macs and 1 linux machine and I heavily use the CMDs for writing music on Logic Pro haha
Better to keep it the other way LOL
late fulcrum
I would use lead free solder more if it was cheaper
Heh, I used leaded solder, but since I use the silver bearing kind, it isn't cheaper. But silver bearing leaded solder is awesome solder.
vagrant wolf
What do you guys think of my new dev board? https://github.com/avencan/Aventen-Formosa-Sync Looking for some suggestions
glad ruin
rapid geode
what is the punishment for this?
raw jasper
What's this supposed to be?
rapid geode
we are in agreement then
im always amazed how many grocery tellers just chuck pies in a bag sideways or even upside down (this one was upside down).
raw jasper
I dunno. They usually come like that due to shipping conditions
It's not like it isn't edible
raw jasper
Oh well. It's gonna turn into pulp in the stomach anyway :D
rapid geode
im gonna put it into a bown and heat it up and put ice cream on it
oh. they refunded me, so it doesnt really matter, but still warrants execution i think
or at least head on a pike
rapid geode
damaged product
item not as described
anyhow. ha. i need to tear out some flooring. only a 5x10 ft area. hopefully it wont be too hard.
raw jasper
Dunno, as far as I'm concerned, it'd qualify only if it was no longer edible
rapid geode
O-o
you gonna present a smashed up pie at thanksgivign dinner?
not going to your house...
:x
haha
raw jasper
I mean, I'd try not to
tardy badger
you gonna present a smashed up pie at thanksgivign dinner?
I’m glad pie has transcended all thanksgiving celebrations
tardy badger
If it comes with ice cream or whipped topping, I’ll forgive
But straight wrecked pie is a sin
raw jasper
Now I want some pie
tardy badger
I’ve got garden pumpkins to process still
raw jasper
Oh it's Canadian thanksgiving soon? TIL!
rapid geode
yeah. on the 9th
hasty wedge
ohhhhhh
burnt tendon
Oh yah, harvest comes early in the great white north, eh?
rapid geode
harvest is over man. its winter
actually, its 30c today. what the forks?
global warmings is real
rapid geode
(thgis isnt global warming, this is being next to a huge lake)
the one thing you can predict about our weather is it will be... something
hehe
(actually it really annoys me when people mix weather with climate and then try to push some point one way or the other)
raw jasper
Problem is, climate actually is changing
rapid geode
yes of course. but what todays weather is is not directly tied to it
it is normal here to change from 30c to 5 c in one day
hehe
anyway. off off topic. haha
raw jasper
yes of course. but what todays weather is is not directly tied to it
Today's weather != climate, of course
But lots of samples of "today's weather" follows "climate"
Anyway, I am not a climate scientist, so I'll just trust what the actual experts have to say on the matter
rapid geode
yes, but noone wants lots of samples. thats no fun when you can just say "its cold today, its a hoax"
solar kindle
It's ugly but it works. I wired up 16 LEDs, including series resistors for each, and stuffed the whole thing into a 3D-printed strip. I've got the body and the lens printed. Just waiting on the back cover. I had one printed but it's not deep enough the contain all that wiring.
rapid geode
diy neopixels?
solar kindle
diy neopixels?
Nah, just white LEDs. It'll eventually be a dimmable lamp similar to this but, y'know, not $350. Planning on making various components (elbows, swivels, bars, bases, clamps) so that you can make anything from a small desk lamp to a free-standing pole lamp. We'll see how far I get before I get bored with it. 😆
strong igloo
yes, but noone wants lots of samples. thats no fun when you can just say "its co...
BuT HoW cAn ClImAtE ChAnGe Be ReAL iF iTs StiLl cOlD OuTsIdE
dusty citrus
I can't explain it:
So we got wood tables, and in top we got monitors, on the right I have a coworker with metal arms for the monitors; Now, to time to time, another coworker touches those metal arms, and discharges static electricity we guess, since he also gets shocks; as long he touches the metal arms, the monitors of my coworkers and mine, that are separated by a wood table and well plastic, go off, then when he stop touching it, the monitors go on, how is that possible?
Both our tables are up a rug, but yet how can it travel through plastic/wood?
umbral phoenix
high voltage over low conductivity material but with high-surface area?
thickness of the wood and humidity could also be factors
solar kindle
neat. why not a regular strip of leds? are these ones special?
No real reason. I picked 100mcd LEDs, so the bar's 16000mcd total. Hopefully bright enough to be useful.
tardy badger
What’s the viewing angle on the LEDs?
Many white LEDs are 120° viewing angle which means your lamp will have a luminous flux of ~50 lumens
solar kindle
What’s the viewing angle on the LEDs?
Specs say ±57° which, I think, comes out to 46 lumens. Nothing to stop someone from replacing those with higher power LEDs (or a longer bar), though. The rig I'm putting together has a 6V power supply and a 60A mosfet, so there's lots of room to play with, there. If/when I post this on Printables, I'll upload models for up to 60 LEDs. Pretty sure somebody could make a nice little lamp that'd burn your face off. 😆
tardy badger
Specs say ±57° which, I think, comes out to 46 lumens. Nothing to stop someone f...
+-57° 🤔
What brand?
Also been tidying up the network setup and printing a rack for my two 3B+ RPis
The rack I printed is for Pi 4 but I’m not using USB on them currently so this is fine
I forgot the Ethernet and USB swapped places between 3 and 4
solar kindle
What brand?
Something I bought off Adafruit, Here's the datasheet: https://cdn-shop.adafruit.com/datasheets/FLR-100W04-HW7.pdf
tardy badger
But this might still work out if I get 2 pi4 8GB for the rack too
tardy badger
Something I bought off Adafruit, Here's the datasheet: https://cdn-shop.adafruit...
Interesting, it looks like it’s about 80° viewing angle
So that would bet you like 22ish lumens
solar kindle
Yeah, it's not super bright, but it works well for a proof of concept.
The nice thing is I'm making the whole thing modular, so I can always upgrade the LED bar without rebuilding the entire lamp.
tardy badger
I love the concept
Might try and make one for myself
I tend to dislike how pricy lamps are
I actually have a lighting PCB I intend to order one of these days
solar kindle
Right? We've got one of these and a) it cost $450 and b) the touch-sensitive dimmer control is really impractical.
tardy badger
Looks neat
solar kindle
I actually have a lighting PCB I intend to order one of these days
I'm planning on using a Trinket M0 to control the light. Three pins for the dimmer buttons and one for the PWM output.
solar kindle
Looks neat
The main issue with it is that the touch-sensitive dimmer control is in exactly the spot where you'd normally hold it to repoint the light, so it ends up changing brightness when you really don't want it to.
tardy badger
Ah, that’s bad UI
tardy badger
I tell ya, it’s amazing what you can 3D print these days
night crescent
The Desk of Ladyada - Qualia S3 Release & Pi 5 announcement &P CI express x1 connectors 🖥️ 🎉 🥧 https://youtu.be/nBbP8ybRlnM
fiery quarry
I forgot the Ethernet and USB swapped places between 3 and 4
You'll just need to get pi 5's since they swapped the orientation back again
tardy badger
You'll just need to get pi 5's since they swapped the orientation back again
I’m hoping pi 4 will be accessible with the 5 coming out
rapid geode
youtube put a 2 hour ad in front of my 1 minute video clip. i think thats a new record
tribal brook
Can anyone recommend a good, inexpensive (bout 25 usd) capture card
umbral phoenix
something like https://www.adafruit.com/product/4669?
tribal brook
Yes. That's about right
Thank you.
I hope it's good for capturing games. Ideally I want one in an icd formate that I can install in my pc but I don't have the funds for that
late fulcrum
ICD? International Classification of Diseases?
raw jasper
I'm guessing it's an autocorrect mangling of "PCI"?
ebon dew
Capturing games from an external source it might be useful. If you want to record gameplay that you are playing on pc you can use OBS. A graphics card certainly helps.
gloomy kettle
I bought this from IKEA some time ago for another purpose. However I wonder if I could also make it into an LED light panel. Holes are about 3/4 inch apart.
late fulcrum
Good idea, that looks workable
gloomy kettle
What kind of LEDs would work best? I want to use it as a plant light.
patent hemlock
iirc there are specific wave-length LEDs for plants
gloomy kettle
But would single LEDs or strip LEDs be preeferrable?
late fulcrum
Whatever works mechanically, I suppose
gloomy kettle
The problem with strips is finding one that fits the hole spaces. I don’t know if the metal is going to be an issue for single LEDs.
tardy badger
The one orange light is my gen 3 Apple TV which appears to no longer work with gigabit Ethernet, just 100BaseT
6 years of service
rough gorge
RIP
bleak fox
I may be too invested into something like usual, but I'd like to know from a hobbyist standpoint. How to learn control theory? Moreso from a practical view with obviously the necessary mathematics.
whole jacinth
i learned from undergrad courses. i'm not sure what the best online resources for learning control theory are. what's your math background like?
bleak fox
I toke Cal 1 & 2, and Physics 1 & 2 (not sure what the equivalent is in the states), Stats, Lin Alg, and Discrete Math.
blissful roost
HHuuuurrrrr "toke"
whole jacinth
some basic knowledge of differential equations is helpful, including Laplace transforms (classical frequency domain control theory). modern state-space representation is closer to linear algebra though
tardy badger
Sometimes I wish the US would shutdown for a week at a time like in China for national holidays
Called Golden Weeks, there are three. There is currently one this week celebrating National Day in China (essentially China’s (PRC) birthday)
tardy badger
Though hilariously, I only realized this after ordering from JLCPCB where they had a notice saying they were closed Oct 1 - Oct 4 of this week, that my package was going to sit until they came back lol
So my DHL package is sitting in a JLCPCB shipping depot waiting for the holiday to end
tribal brook
I'm guessing it's an autocorrect mangling of "PCI"?
Yes. That
tribal brook
Capturing games from an external source it might be useful. If you want to reco...
Consol. Doing a letsplay of assassins creed mirage thursday
burnt tendon
I always end up asking my non-US coworkers what the holiday is that they've got that we don't.
winter verge
Trying to replace a USB C port on a laptop and have removed it with a hot air station, can I reuse the solder (adding flux) to put on the new USB C port or should I try to wick it away and put on new solder or solder paste?
rapid geode
holiday today is "truth and reconciliation day". and next monday is thanksgiving. i think only the banks and gov were on holiday today. free money day.
(for gov employees at my expense)
glad ruin
Trying to replace a USB C port on a laptop and have removed it with a hot air st...
I recommend replacing it.
tardy badger
Welp.. my morning is off to a not so great start
blissful roost
Morning = not a great start
tardy badger
My dog is facing the consequences of snatching children’s chocolate pancakes yesterday and made his own version on the floor before I could even react
I could have cried. I was just waking up and coming down for my cup of coffee
blissful roost
Nice!
People ask why I have bunnies and not a dog, or cat..
Welp... anyone that has a dog or cat should already know. 😛
tardy badger
Bunnies have their own issues. As do most pets
It comes down to what you want to deal with
blissful roost
Yeah, but not like dogs and cats.
Like.. even the waste is dry and easy to manage. lol
tardy badger
Sure
Bunnies and similar animals also are more susceptible to diseases and can lend frequent vet visits
The nice thing about bunnies and Guinea pigs is they can eat your left over veggies
Though my larger dog (the one making pancakes this morning) regularly forces himself to eat dropped lettuce
One animal I probably wouldn’t own is a chameleon as much as I would love one. They just require very specific conditions and they get sick very easily
full drift
i have a question related to esp32 , and a tft . where should i post the question ?
im not using micropython , just the regular c++ .
rain cradle
projects channel i guess, maybe the arduino one
glad ruin
fossil dawn
interesting how light sensors are used to detect which page you're on
glacial wigeon
that makes me wonder, what rats-nest of gates is behind the curtain, to mix the buttons and light sensors?? 😄
or did they cheap out and just use an MCU
static flare
I'd probably say an MCU, but I wouldn't call that "cheaping out", it's just the way a lot of things goes nowadays
stuck moth
https://cdn.discordapp.com/attachments/724907591095943228/1158719045013622834/a8...
I have this for my kiddo!
stuck moth
that makes me wonder, what rats-nest of gates is behind the curtain, to mix the ...
I'm pretty sure one of the pages has the schematic on it
at least part of it
raw jasper
I could have cried. I was just waking up and coming down for my cup of coffee
oh no! Are they OK?
raw jasper
https://cdn.discordapp.com/attachments/724907591095943228/1158719045013622834/a8...
This is great! :D
tardy badger
oh no! Are they OK?
Seems to be
raw jasper
Alright, that's good to hear
dusty citrus
I got to say that the passion fruit is pretty nasty
Unless it's not just bad since I doubt that they grow here
raw jasper
I have never had passion fruit, or, for that matter, seen it from inside, so I can't help you there
fossil dawn
I have never had passion fruit, or, for that matter, seen it from inside, so I c...
I see you don't have a lot of passion for tropical fruit?
frozen flame
anybody know the cs and dc pin for this board? https://www.adafruit.com/product/5800
thick wind
Huh, the board is so new there isn’t a learn guide yet…
faint fox
Does this help at all? https://github.com/adafruit/circuitpython/blob/main/ports/espressif/boards/adafruit_qualia_s3_rgb666/pins.c
raw jasper
glad ruin
Wait... so they're splitting off Altera?
glad ruin
Whether it's good or bad depends on how much control Intel actually has. Less is better.
lusty fossil
How would one go about getting sort of point of view shots that are that and frame such that they seem to be from the point of view of people inside a model train set? Say Town Square or a village or some sort of thing like that.
Is there are specific kind of Photography associated with Miniatures like that?
tardy badger
How would one go about getting sort of point of view shots that are that and fra...
I’ve seen people use raspberry pi to do it
I feel like you could probably do something similar
lusty fossil
https://www.raspberrypi.com/news/ride-a-model-railway-from-the-train-drivers-pov...
Yeah I just want to get really high resolution so there's got to be a simple way to do that it just probably takes expensive equipment and so it would make sense to hire somebody
topaz plover
Is the old matrix portal no longer supported in Arduino 2.2 I dont see it in adafruit boards drop-down in Arduino 2.2+ TIA
hasty wedge
since this is general chat can i share something off topic?
like my new OC?
Also, my huge SOP8 PY32F003 order just arrived
32K flash 8K RAM Cortex-M0+
super cheap, like 16 cents each
with IAR EWARM and MDK support
(I am an IAR person)
tardy badger
It’s not really worth the expense at the moment
I’ll likely replace my UniFi AP Lite with the Wi-Fi 6 variant
olive dome
Yeah so apart from the BSS coloring other features are just if you need it then you are going to upgrade.
BSS is mostly playing nice with your neighbors
tardy badger
I think my setup kind of tries to do that already
Luckily I’m on an end unit and only really competing with my one neighbors Wi-Fi rather than multiple neighbors
I lived in a 1500sqft apartment and had to use two APs to cover the whole thing because the interference from neighbors Wi-Fi was so bad
I haven’t done a RF scan recently to see what the different channel utilizations look like
umbral phoenix
I'm always amazed when I go to a typical residential area and see how many networks are in range
I think I'll always be hybrid... 2.4GHz-only devices, bgn, ac, ax ...and little need for more speed than the internet connection since most (high-bandwidth) communication is LAN-to-WAN rather than on the LAN
late fulcrum
Yeah I just want to get really high resolution so there's got to be a simple way...
I suppose it depends on how high is "really high". 4k or 8k, no problem.
lusty fossil
I suppose it depends on how high is "really high". 4k or 8k, no problem.
I always forget that wild resolutions are within reach these days. 8k is plenty, thx.
fossil dawn
How would one go about getting sort of point of view shots that are that and fra...
Miniatur Wunderland Hamburg put a DJI Pocket gimbal camera, or various 360° cams onto flat railway cars
https://www.youtube.com/watch?v=hBo4J3MofQA
https://www.youtube.com/watch?v=Midr4rLpxuY
(english subtitles available, not a tutorial more entertainment youtube but maybe still helpful)
glad ruin
I suppose it depends on how high is "really high". 4k or 8k, no problem.
8k creates all kinds of problems. The bandwidth requirement is insane.
People think "well it's just double, it can't be that bad" but the reality is that the bandwidth requirement increases with the square of resolution.
tardy badger
Ah that’s just 4x larger than 4k
What’s 4x increases in bandwidth between friends?
Lol
rapid geode
8k is low res now. old news. all the cool kids are filming in gigapixel
tardy badger
I film with an IMAX 64k
Which apparently is the most advanced cinema camera available
I don’t remember the actual name but it apparently films in ridiculously high resolution
Also weird fact, the eye is equivalent to roughly a 576 megapixel camera
raw jasper
wait, are you serious? xD
rapid geode
the imax is "only" 12 or 16k. i forget. the biggest things ive done for a show was 20k. but it was not for normal output usage.
only a handful of shows use 8k
most are actually still 2k
tardy badger
the imax is "only" 12 or 16k. i forget. the biggest things ive done for a show ...
The 64k bit was a joke, the actual camera is 16k and it costs like a quarter million dollars
There was an article I read a while back that they were trying to do a 64k camera but I can’t find it 😦
Makes me think I read the onion or something
There are 32k cameras apparently
Not quite the same thing though lol
rapid geode
ha
thats a line scanner
dalsa does make the 12k sensor blackmagic was using
but i think it was a fail
man, i can believe all the "im looking for a cnc around $200 that will cut aluminium" posts.
shakes head
:x
ha
cnc is not a 3d printer.
tardy badger
I’d prefer to pay good money for a machine that could potentially send a bit wizzing off fast enough to penetrate skin
rapid geode
ha
there are some many of these cheap plastic machines out there. which ironically can barely cut plastic.
tardy badger
I wanna get one of those CNC machines that do refacing on metal blocks
rapid geode
meanwhile my machine which cuts alumnium "reasonable ok" is more like $15000.
tardy badger
They cost a pretty penny
rapid geode
saw one post "cant i just let it cut at 6" an hour and come back in 2 days and the part is done?"
tardy badger
I could just watch one of those block leveling CNCs for hours. Just taking the smallest layers imaginable off the top with each pass
tardy badger
It’s very ASMR
rapid geode
you mean a fly cutter? for decking engine blocks and such?
tardy badger
Yes
tardy badger
Sure
But they’re programmable on the newer machines and they can do more than just x/y cuts on the nicer ones
rapid geode
i need to finish ripping my floor to put my cnc back in place. the last owner of this house decided to put vinyl over the hardwood, then put plywood over that, with screws every 2-3" (not even a joke) and then concrete leveler on top.
taking hours to even remove 2 feet of it
i got about 7 ft left.
patent hemlock
as a fan of home reno shows, that's one of the worst i've seen/heard of!
rapid geode
yup. luckily its only like that ine one small room
lusty fossil
8k creates all kinds of problems. The bandwidth requirement is insane.
I was thinking still photography
glad ruin
Ah, that's more reasonable.
lusty fossil
Maybe 1440p streaming
hasty wedge
hoary palm
Whats going on with adabox?
hard estuary
Whats going on with adabox?
Here is what they said last week during ask an engineer: #live-broadcast-chat message
hasty wedge
my friend just sent me this... If this is true then MTA might be one of the biggest Pi waster
hoary palm
Thanks @hard estuary
wanton thistle
Are those ads on a subway?
raw jasper
Wait, how do we know 'tis a pi?
dusty citrus
where can I get support whit the Lightsaber Prop-Maker RP2040!!!
hasty wedge
Wait, how do we know 'tis a pi?
guess work
stuck moth
where can I get support whit the Lightsaber Prop-Maker RP2040!!!
On the support forum: https://forums.adafruit.com/
tranquil swallow
why don't they make tanks (the one with guns and tracks) with battery powered electric drivetrains?
valid spoke
Because the power density of liquid fuels is still top dog for that application
Ease of logistics too
And ease of operations in any climate
patent hemlock
any given gas-powered sedan has longer fuel range per pound of fuel/engine than current electrical tech
valid spoke
There's really no advantage to them being electric
Yeahb
But electric cars make sense depending on your lifestyle
Electric tanks don't
rapid geode
tanks are trying to blow up the enemy. not themselves 😛
valid spoke
I mean concern for explosion doesn't matter much since they also have a lot of other explosive material in there
rapid geode
the depleted uranium will keep the batter fire contained to the passenger compartment nicely
patent hemlock
tanks are trying to blow up the enemy. not themselves 😛
although i would like to reference the current russian tank tech and a phenomenum called "jack in the box"
rapid geode
haha
valid spoke
The fuel the US uses for pretty much everything is JP8
Which becomes a vapour at 38c
So it explodes pretty ez
valid spoke
rapid geode
i expect the real reason is a tank needs to be relatively self sufficient, and recharing it for 24 hours ever 100km is.... not ideal
valid spoke
Yeah
And how do you even charge if you are in a bad area
The gas turbine in the US tanks runs on anything
For a long time
If it burns it will work
valid spoke
It would be cool cause it would be very silent and have very little heat signatures
But only for a widdle bit
rapid geode
yeah, turbine is fairly idea for a tank. they use hydraulics to drive the tracks right? so you dont need variable engine speeds.
tranquil swallow
interesting
valid spoke
It uses an automatic transmission
rapid geode
um, an electric tank would be extremely hot
rapid geode
tracked contructionion machines are hydraulic pumps and motors. was assuming it might be the same
valid spoke
It works like a car transmission because that way they can use a torque converter
rapid geode
ah
they make electric track loaders, but they can literally run plugged in to the mains
they dont travel far
valid spoke
um, an electric tank would be extremely hot
Yeah but a lot less hot than the exhaust of a turbine or a diesel engine
1500f exhaust
For turbo diesel
rapid geode
im not sure. at the exhaust valves of the engine sure. but those are easy to shroud and dissipate. 200kw is 200kw in the end
valid spoke
Oh yeah they use a regenerator too
And Some other stuff
Gas turbines are awesome at everything
Especially power generation
raw jasper
You can hook up a turbine to a pizza oven
Or an oven in general haha
Then, you can bake pizza
patent hemlock
you might have to peel it off the walls
late fulcrum
Which becomes a vapour at 38c
JP7 is much nicer in that regard, but has other drawbacks
late fulcrum
pizza pulse jet/
I remember a salami engine a while back. Salami fuel and (I think) nitrous oxide for oxidizer.
rapid geode
mythbusters did that
raw jasper
I remember a salami engine a while back. Salami fuel and (I think) nitrous oxid...
Not enough nitrates in the salami? 😆
(I know, not the same thing, just a bad joke)
raw jasper
I want to play some nethack...
hasty wedge
night crescent
WE ARE LIVE! ASK AN ENGINEER! https://youtu.be/3gICH2JZabs
pallid sundial
hey there everyone, i used the nuke.uf2 on my pico but now it keeps on automatically going to bootselmode everytime i connect it to my computer?..
glacial wigeon
hey there everyone, i used the nuke.uf2 on my pico but now it keeps on automatic...
thats because it doesnt have any firmware, you nuked it!
you need to flash it with some other uf2 file now
pallid sundial
thats because it doesnt have any firmware, you nuked it!
thanks alot, i forgot to add the micropy of2 lol
my bad
late fulcrum
can you like use non-ADC pins on the pico as analog>
Kinda: they'll all or nothing, but you can hook an analog signal to them and get "1" if it's higher than the logic threshold and "0" if it's not.
pallid sundial
Kinda: they'll all or nothing, but you can hook an analog signal to them and ge...
what about something in between
lol
rain cradle
What about you describe the situation further
late fulcrum
In some circumstances, the pin will oscillate if the input is right on the threshold
rain cradle
Like, is there a good reason not to use the existing ADC pins?
late fulcrum
There are a variety of ways to get more ADC pins if you need them
pallid sundial
Like, is there a good reason not to use the existing ADC pins?
i need one more..
cause drone
fossil dawn
i need one more..
The RP2040 itself has 4 ADC pins. The "Raspberry Pi Pico" takes up one of those to measure VSYS. The Pico W uses that pin to measure VSYS and as SPI CLK for the wifi module. I wonder if you could cut some trace, or desolder some component (on the pico FET Q1 maybe) to use that ADC pin for whatever you want instead of VSYS.
Other boards like this one break out all 4 ADC pins for you to use. https://www.adafruit.com/product/5302
(Fun fact: RP2040 has 4 ADC pins. But actually just one ADC. That one ADC takes 2us per sample. So you can get 500k samples/second. But if you want all 4 pins sampled, then you only get 125k sample per second for each pin. If I understand correctly)
thick wind
@pallid sundial if you need more analog pins, an external device like https://www.adafruit.com/product/4648 is an option as well.
ebon dew
Power washing 2023 (not a sim game).
ember token
Power washing 2023 (not a sim game).
The graphics look so realistic!
topaz plover
Wonder if Adafruit is Aware of this: https://share.newsbreak.com/537z7uun
versed meteor
glad ruin
Came across this on yt. I couldn't resist the temptation to share the madness
I saw this awhile back. Most of them are just SIMD instructions, not too insane. Also GETSEC was not on that list.
raw jasper
I saw this awhile back. Most of them are just SIMD instructions, not too insane....
I looked it up. The video said "craziest", not "I will pretend I am a processor within a processor and respond to external events by shouting "la la la I don't hear you", and on top of that, perform some sort of security measurements on my environment" level of cursed :P
glad ruin
I looked it up. The video said "craziest", not "I will pretend I am a processor ...
Having worked on the code that GETSEC calls, this is... pretty on-point.
valid spoke
https://www.youtube.com/watch?v=Wz_xJPN7lAY
Should I be proud or concerned I can understand most of this video
glad ruin
Definitely concerned. It's x86.
glad ruin
valid spoke
Definitely concerned. It's x86.
I Wanna do python but my degree is ABET certified and they want us to do x86 assembly
Which is the equivalent of telling someone to properly understand how to build something out for steel they need to know how to smelt it
tardy badger
While software compiles, I contemplate the final wrap up for my first watch project started last year
For one, a retention plate to both apply pressure for the PCB to be better fixed and a place for the TFT to lay flat on
Im also printing the final case and after that the final shallower bezel for a cleaner sleek look
Then gluing things together where it will remain until I either device to tear it apart or something catastrophic happens to it
The display will get glued into the bezel to prevent movement as well
ebon dew
Looks great
limber dome
Does anybody know if they're ever going to make any more of these?
Adafruit TFT FeatherWing - 3.5" 480x320 Touchscreen
glad ruin
I Wanna do python but my degree is ABET certified and they want us to do x86 ass...
Only Intel, AMD, Microsoft, VMware, and a select few Linux greybeards really work with x86 assembly.
tardy badger
I Wanna do python but my degree is ABET certified and they want us to do x86 ass...
What degree are you pursuing?
Usually you learn the basics of assembly in a computer architecture class for CS/CompE but nothing deep
I don’t think anything really prevents you from learning python even if it isn’t in your degree path.
That said, I think you should learn Python regardless of degree requirements or ABET. It’s fairly straightforward to learn on your own and there are tons of tutorials as well
I personally opted to learn python outside of school because I had fun ideas at the time for the language
valid spoke
What degree are you pursuing?
im doing Bachelors Electrical and Computer Engineering Technology
I will be learning Python either way
Going to be doing some circuitpython stuff soon ish
valid spoke
It requires a lot more chemistry and physics and I have dyscalculia
Had to take calc 1 3 times
Calc 2 2 times
tardy badger
Same
tardy badger
I nearly failed all my electrical classes due to dyscalculia
valid spoke
I use 3 scientific calculators and an array of weird methods to get me through but It works
tardy badger
But I pulled through and figured out some tricks for passing exams so I would be able to catch my mixups
valid spoke
Yeah that's the only way
valid spoke
I'm only doing mixups at the end now so I am averaging 90 on it
Oh Lord
Brave man
I might go back to do something else after but
I have already dropped out twice and I'm almost done this time
tardy badger
Computer Engineering isn’t for the feint of heart
valid spoke
It isn't
tardy badger
Most people o know who started CompE either went straight EE or CS lol
EE is probably a better path because it kind of naturally leads to software
tardy badger
If you can context switch well, CompE is very manageable
My buddy graduated CompE with a 3.978 or something like that
Dude was like 38 and already has a bachelors in graphic arts
valid spoke
damm
thats a pretty amazing feat
managing time is very tuff as is for me
cant imagine doing that and having all the life workload stuff of being almost 40
i like the degree im doing right now tho im someone who likes to be a jack of all
and i have already covered a lot of areas of engineering
tardy badger
Yeah, dude was brilliant and to the degree of being able to effectively implement things
My biggest isn’t in school was getting distracted by projects
I’d learn something and then have to figure out implementing it in real life or experimenting
valid spoke
yeah thats been me for a while now LMAO
both with engine building and then electronics
i was doing EE at first, failed calc 1 and had a tough time, dropped out, studied to be a fancy mechanic for 2 years, learned to do troubleshooting and all kinda neats things, became engine builder for cool porsche engines and then i moved to rebuilding big AC motors
like BIG BOYS
and then i realized that i like building but i also like challenges
so now im back in the engineering grind
got a year left this time tho
tardy badger
Good job, it’s tough getting back on the horse when you’ve fallen off a few times
Failed my first attempt at engineering 2013-2014
Got a fire in my heart that I just needed to do it and got back to school in the summer 2017, graduated December 2020
valid spoke
during 2020?
damm my man
quite the time
yeah this whole shtick takes a WHILE i have met very very few people who have graduated in 4 years
good on you for sticking on it for that long tho
did you have an idea of what you wanted to do with your degree after?
job wise
im doing this because i like to think like an engineer and like all the knowledge and abilities i get from it
but not sure where ill end up
tardy badger
I wanted to do embedded engineering
I’m kind of doing that now
A mix of embedded small platform software engineering and application for embedded Linux systems
tardy badger
Yeah, wish I could have figured it out in my early 20s rather than when I did. I hit 31 next month and I think about the lost career advancement of not graduating by 22-23
valid spoke
its easy to say that in hindsight but i dont think it matters much
here my dad for example he had big dyscalculia too
he dropped out and became a hippie that taught windsurf lessons in italy
graduated at 31!
and he is happy with his career
tardy badger
You make it when you’re ready is all I know
valid spoke
you comin out of this with the tools that can be earned only be a substantial amount of grit and knowledge of the self since you had a bigger challenge
which is what makes u better than the rest
i will head out to finish my photonics work since i got a bunch of stuff to do
you take care @tardy badger
thanks for the chat
tardy badger
👋
tardy badger
Better overall profile
hasty wedge
made a music greeting card with my music firmware (two tones with volume control)
it is very quiet because it is powered by a cheap Amazon coin cell and piezo needs voltage
but hopefully you can hear the two tones
fossil dawn
that's that super cheap once-programmable audio IC/MCU you showed off some time ago, right?
late fulcrum
Yeah, wish I could have figured it out in my early 20s rather than when I did. I...
I never graduated and it has had a minimal effect on my career
tardy badger
I never graduated and it has had a minimal effect on my career
When did you start in tech?
I should preface that it really depends on what area of tech you enter. Software is far more forgiving in our day and age than hardware
dusty citrus
I should preface that it really depends on what area of tech you enter. Software...
It's all about networking...
Plenty of censured word that thrive due to relationships/areas of influence
tardy badger
Networking helps but it’s not a guarantee. The issue is often gate keeping that keeps a lot of people out of roles without having a degree
ancient rivet
@hasty wedge hey. sry for pinging out of the blue. but just wanted to mention the PAM8904 in case it might be useful to help pump up the volume. there's an adafruit breakout fwiw. but that's probably too chonky for a greeting card. but the PAM8904 itself is super tiny.
dusty citrus
Networking helps but it’s not a guarantee. The issue is often gate keeping that ...
Just mass send without even checking, the description is only about the ideal candidate, often made by hr/boss who don't even know what they're talking about
I find that degrees are really useful only in government related jobs, or lobbies such the health industry;
raw jasper
Now you need to make it do something extra cursed, like compute digits of pi and produce frequencies based on the digit it has currently computed
"Open this card to hear pi!"
hasty wedge
Yeah, I have one of that module from Adafruit it is super loud
It is way too expensive for a greeting card considering the rest of the circuit in total costs less than a dollar
(I am very into cost optimization)
That 8 pin ARM MCU costs 15 cents btw
raw jasper
Oh you can definitely do lots of cursed stuff with it if it's ARM :P
raw jasper
It just lacks the PIO, probably RAM, and a host of libraries that make your job easier
but it's a lot cheaper
hasty wedge
Yeah, 24Mhz 32KB flash 8KB ram
Uses either IAR EWARM or MDK
It was probably designed to be a 8051/PIC replacement
raw jasper
I wouldn't be surprised, given that part's MCU family's (8051) penetration
hasty wedge
I just counted that seems like the most expensive part of that greeting card excluding the card itself is the coin cell battery
Lol
This is the art of disposable electronic my friend!
(or you can reprogram that MCU with a SWD cable)
hasty wedge
Yeah, it's called disposable doesn't means you should throw it away
raw jasper
Yeah, besides, it's somebody's well-wishes
tardy badger
raw jasper
acid traps!
umbral phoenix
don't board design tools have nice curves for traces?
tardy badger
acid traps!
Signal clipping at over 10GHz
Which surprisingly is more of a concern these days as networking gears pushes faster and faster
raw jasper
Signal clipping at over 10GHz
Yeah, IIRC modern manufacturing has made worrying about acid traps kind of irrelevant?
However, I am not sure this is a concern for, like, the vast majority of circuits out there :D
tardy badger
Yeah, acid traps aren’t an issue
Honestly, the average hobbyist PCB designer doesn’t really need to worry about the issues of using 90° traces
Now if they’re making something running GHz speeds and doing networking and high speed serdes connections, definitely avoid them
Some people like the aesthetic of 90° traces
hasty wedge
I just counted that seems like the most expensive part of that greeting card exc...
I am really glad that I have this kind of cost optimization mindset
Because I can sell my solution very cheaply and very competitively
raw jasper
Now if they’re making something running GHz speeds and doing networking and high...
So, no acute (or right) angles for USB3?
hasty wedge
Cursed: round traces
raw jasper
Now presenting: The raspberry π
tardy badger
So, no acute (or right) angles for USB3?
If you’re using a USB 3 PHY, probably not
raw jasper
All signals have been routed using round traces
tardy badger
Aka wires, the PCB is air
raw jasper
cursed wirewrapped ARM single "board" computer with too long wires
Will only run at 500KHz
tardy badger
Hehe
I will say, I was a little disappointed the first time I saw a raspberry pi that it wasn’t pi shaped
Missed opportunity there, I tell ya
raw jasper
The little πs with googly eyes in the 3blue1brown videos
ebon dew
I will say, I was a little disappointed the first time I saw a raspberry pi that...
This was against their design philosophy at the time. They specifically didn’t want any Pi references. It was one of the design criteria reasons why my logo design submission was disqualified. They didn’t specify that until after they ruled out my design. 🤷♂️
tardy badger
I know, it’s just disappointing the didn’t use a pie shape
It’s a missed opportunity
rapid geode
it is pie shaped. just side profile
raw jasper
Spoken like a true CAD user
raw jasper
This has been made to house a single golden pick
Now, most probably a pick made of gold will make your guitar playing sound Very Bad[TM], but when did that ever stop luxury brands? :P
raw jasper
I use my fingers
rapid geode
me too. i rarely use a pick
glad ruin
Now if they’re making something running GHz speeds and doing networking and high...
... unless you really know what you're doing. It is possible to do 90° corners with GHz signals, but you need to make a little 45° cut so that the signal literally bounces in the other direction.
tardy badger
Magic
Also it’s impressive that such a small change in impedance due to a ever so slight change in trace width can wreck so much havoc on high speed signals
rapid geode
when i first saw a dvi board output it was curious cause the traces were roundes and winding around to make each one the same length
i think that was the first thing i saw with not normal square angle traces
i think RAM routing on motherboards is similar
tardy badger
Yeah
raw jasper
when i first saw a dvi board output it was curious cause the traces were roundes...
That's just black magic sigils to keep the magic smoke in
:P
tardy badger
Length matching differential traces
raw jasper
The PCB equivalent of the twisted-pair wire!
rapid geode
but curved and rounded too. not just matched
raw jasper
TIL Line and Yahoo Japan have now merged
raw jasper
The new company is called LY Corporation (LINEヤフー株式会社)
olive dome
So Ram is interesting, if you look at the GPU with GDDR5 and GDDR3, you can see there is no length matching anymore
Essentially the length is calibrated in the memory PHY, because it is nearly impossible for wide-parallel bus on the GPUs to do length matching
tardy badger
I’m guessing something camera related?
olive dome
yes
tardy badger
Sweet, I’m interested to see what you do
lusty pendant
Hello! Not sure if the topic section to ask but was wondering if anyone created more custom eyes for the Monster M4sk outside what's available through adafruit download on their main page/guide
late fulcrum
When did you start in tech?
For a regular paying job? 1980
tardy badger
Different time then, it is significantly harder to start in tech without a degree. Software is getting easier but it can still be an uphill battle
Not impossible, but it’s not as common as it once was
It’s pretty cool the things you’ve been able to do without a degree
late fulcrum
It wasn't that common then, I had to be creative and flexible
whole plover
i keep losing my wallet this is the 3rd time in 3 months
thankfully there's never anything in it and always find it some other day around the house but this is getting annoying
tardy badger
It wasn't that common then, I had to be creative and flexible
I’m glad you were creative and flexible, I wouldn’t have met a cool maker like yourself and got to see the neat things you’ve made
dusk flax
The creative and flexible makes all the difference. I also don't have a degree and have been working in software for over 20 years. I've done a lot of hiring, and a degree is great, but seldom are they truly any different than the person who took the time to just figure it out themselves. I personally feel those without are often better because they've worked harder to get there.
whole plover
https://tenor.com/view/poor-poor-dude-poor-dudes-homeless-homeless-man-gif-26198...
what we don't know about the cartoon in the box is he's got as much ability as a degree educated kekw
dusk flax
Oh true. Finding a good place is hard. Especially right now.
I was surprised when I joined this group that there wasn't a jobs channel...
tardy badger
I’ve got a hankering to design a high speed, low power free space optics module
Gotta learn how to design an Ethernet controller on an fpga
rapid geode
design a high speed, low power, free, mass transit system for north america....
tardy badger
Unfortunately I didn’t go to school for civil engineering
rapid geode
ha
tardy badger
Or political science
tardy badger
Sounds like it
glad ruin
Or political science
This is what you would need, unfortunately.
rapid geode
you need more than that. our premier drew a random line where he wanted a subway to go (conveniently through land his friends owned) only to be told "uh, thats solid granite, not happening"
then he tried to allow development in out greenbelt park and farm area (also owned by his friends, shocker)
that one was shot down eventually by the court
anyhow
hahahah
i want a high speed train to take me around the country at 500kph
with service ever 20 minutes
burnt tendon
Well I guess you could say that you can never take the planning process for granite.
rapid geode
.....
tardy badger
This is what you would need, unfortunately.
Affluence would probably go a long way as well
Anyway
rapid geode
moving right along... (at high speed trian speeds)
tardy badger
I’m going to start working on a PCB design this weekend for my VLC (visible light communication) module
rapid geode
visible light communication? is that like when you instruct your cat to move with a laser pointer?
tardy badger
Gonna use a crosslink fpga since it can do 1.2G on its IO
tardy badger
visible light communication? is that like when you instruct your cat to move wit...
Similar concept
Except it’s two lasers/light sources talking
rapid geode
and 4 cats
tardy badger
So the cats are metaphysical in the device itself
rapid geode
ah
tardy badger
Ones rated for 1-2 candela each
Red and green for hopefully different environments like under water or open air
rapid geode
so your pc will be like a rave
tardy badger
Green for under water since it travels surprisingly well under water
tardy badger
so your pc will be like a rave
Yes lol
rapid geode
oh, under wather, thants neat
tardy badger
Many products like LiFi use white light carrier
They’re larger systems that are seeking adoption in office spaces
rapid geode
red green is getting old now. i think he is retired
rapid geode
They’re larger systems that are seeking adoption in office spaces
isnt it distracting? or is it like pwm where at a cetrain point it just looks like its a regular light
rapid geode
but what if its all 000s for a while
rapid geode
oh, so a bit like dc coupling.
worthy magnet
I wish LiFi would be available for hobbist
in like
cheap
20$ or smth
(price comparable to ESP32 would be nice)
tardy badger
Unfortunately the components for the optical PHY cost more than an esp32
worthy magnet
true...
would be nice if those are cheap ;w; (I don't have enough income that is...)
tardy badger
If I sold my module it would easily cost $300 for a pair
tardy badger
Absolutely
worthy magnet
tbh
In Japan, WiFi IoT isn't that cheap
but when ESP32 dropped, it became widespread because they take certifications right for us to use (module, that is)
I wish adafruit got a Japanese reseller right that can sell modules cheap.......
tardy badger
Yeah, Espressif did a lot for making IoT accessible
worthy magnet
also LoRa isn't the thing in Japan
it's very galapagos
gateway sells for like, 300$ rn
wish those are cheaper so I can experiment.
or LTE (M1?) or something that can do WAN in range of 20~30$ would be nice.
tardy badger
I’m sure we’ll see more affordable modules come from Espressif
glad ruin
wish those are cheaper so I can experiment.
or LTE (M1?) or something that can d...
Yeah the trouble is that those are licensed bands.
worthy magnet
920MHz would be good
(aka Sub-GHz)
for Japan that is
or just go full blown LTE
tardy badger
Yeah the trouble is that those are licensed bands.
You can pay like $10 a month for a few gigs of data a month on a module. At least in the us you can
worthy magnet
idk the Japan situation that much, but I do tell you if you wanna know 😛
tardy badger
As long as you have a valid IMEI
worthy magnet
TELEC would be the problem
FCC would be good but us need to actively register when you are going to transmit
reciving is ok
idk if DFS is required on that band
crystal ore
Gotta learn how to design an Ethernet controller on an fpga
You miiiiight be able to just send the raw Ethernet signals directly over the LiFi link and just pretend to be a cable without any actual Ethernet controller beyond a PHY chip.
tardy badger
I’m planning on taking the packets into a fifo that will push it over the VLC link
worthy magnet
it was me don't understand RTOS event groups :C
tardy badger
Only thing the Ethernet controller only really will construct and deconstruct packets to send and receive data over the VLC PHY
olive dome
gateway sells for like, 300$ rn
Why? I know JP requires Listen-before-talk but that only requires additional SX1261 for background spectrum scanning?
worthy magnet
idk the practical use of SX1261 rn in Japan
because it's not licensed by anybody
so I can't say for certain but
tardy badger
If I push my VLC PHY to 400Mbps, ideally I could accept a 100BaseT Ethernet connection
worthy magnet
I don't think so
olive dome
see SX1302CSS923GW1
worthy magnet
do they sell in Japan?
tardy badger
You miiiiight be able to just send the raw Ethernet signals directly over the Li...
You could technically convert straight to light, but that many LEDs would likely be tough to manage on the receiving end