general-tech

[naive rain]

The IPs are 192.168.1.128 and 192.168.1.70, right?

[thick prawn]

Yes they are

ifconfig

[naive rain]

Yeah, eth0 is Ethernet and wlan0 is WiFi

[thick prawn]

Figured. Now how can this be...

And why does the router say they're both ethernet. Weird

[naive rain]

That is weird. Maybe you should leave the connections just for redundancy? If one fails you can still connect to the Pi

[hearty karma]

Could be a WiFi router is plugged into the ethernet and operating in bridged mode

[thick prawn]

I tried sudo rebooting it, but it didn't seem to change

[naive rain]

Not sure why they both show as Ethernet

[thick prawn]

Can you elaborate on this?

I'm sure all things connected to ethernet are clients

I'm not sure what you mean

This suddenly happened when I didn't explicitly change anything configurative

[hearty karma]

You can have a WiFi access point getting its connectivity by being plugged into wired Ethernet, and configure it in "bridged" mode where it just propagates the same network from wired to wireless.

[thick prawn]

I am just really not a fan of using IPs, I like my hostnames a lot

[thick prawn]

Ah, like I said. I'm sure they're all clients

[hearty karma]

I don't know what you mean by "they're all clients". I was just explaining how a WiFi device could appear on a wired network. You can still use hostnames, you could even have separate names for each IP address.

[thick prawn]

Sorry if it's bad terminology on my end

I'm saying I don't believe I have such a propagator device

[hearty karma]

It is connecting to some WiFi somewhere, and that WiFi appears to be on your network.

[thick prawn]

Hmmmm

[exotic patrol]

That's a good point, thank you soooo much!

[thick prawn]

Well, I don't live alone. They could've messed things up

I'd also like to note, another device I would SSH to, an old laptop, also isn't letting me resolve its hostname anymore. And that broke at the same time as the raspberry pi

[lean stone]

DHCP servers usually distinguish clients by MAC address. if the same device is connected to both Ethernet and WiFi on the same IP network, it will usually have separate MAC addresses for each, so the router or other DHCP server will happily give it two IP addresses

[thick prawn]

But this isn't happening to the old laptop. It still shows up as one device in the router admin page, though it doesn't let me in anymore (through its hostname)

I'm gonna try the classic reboot on this thing

This is too weird

[thick prawn]

It does have two different MACs

Wondering if I can just kick the wifi one off. I don't want this

[pearl frost]

it would be abnormal if the wifi and eth interface had the same IP

also you generally can't route via the machine's local hostname unless you've gone out of your way to do that

if you had a local DNS server or were using mDNS or had your hosts file configured as such then you could setup a domain name that mapped to the rp's IP

which, again, for clarity: the hostname has nothing to do with routing

additionally the mac address is burned (usually) into the interface. They're static, unchangable. (usually)

interface in this case being the eth/wifi adapters

(as a note, DHCP-given IPs are generally based off your PC's mac address. I knew the math for this once but it's been a while since CCNA...)

[modest coyote]

there any small, cheap wifi camera boards better than an ESP32-cam yet?

[west fractal]

Fun fact

CH340 series USB UART controller actually contains a 8051 core inside the IC. It's probably programmed via mask ROM or flash that are not accessible by the user

I can imagine the internal of CH340 is probably pretty similar to CH551

Which is their 8051 USB MCU

[pine igloo]

Alternative to the TP112 in this circuit?

[violet torrent]

What is the TP112 in this circuit

[unreal nexus]

Q: Is it dangerous to heat gun the case of old dead electronics (unplugged and in a ventilated area of course)? (e.g. phone, printer, camera)

I'm just worried maybe some components have the potential to explode lol? The reason is lightly heating the surface makes painting it a lot easier. In some instances maybe I can take the case off but others it's will be difficult.

This is for an art project and they won't be powered on.

[pine igloo]

Beats me haha

[pine igloo]

yo

can i sell apple products in here? like phones and macbooks and stuff sealed? or is this the wrong chat

[lean stone]

electrolytic capacitors, especially old ones, are prone to drying out and losing functionality. how hot does it need to get?

[unreal nexus]

not exactly sure as I haven't tried yet, I guess it also depends on the size. Maybe it's best I experiement with other methods first

[lean stone]

oh, if they're already nonfunctional and you have no intention of turning them on afterward, it's likely less of a problem

[regal horizon]

@proud fable you should probably ask permission to advertise from a moderator or admin first.

[violet torrent]

they're no longer here haha

[regal horizon]

yeet

[violet torrent]

Do y'all sell any boards with a capactive touch capability?

[icy moth]

QtPy M0

With the samd21

[violet torrent]

I just want to be able to touch something that's metal (a shirt pin, in this case) and be able to sense it

[icy moth]

Built in capacitive touch peripheral

[regal horizon]

circuit playground and clue have capacitive touch

[icy moth]

Or if you want simpler, they have a standalone capacitive touch controller called the AT42QT1070 on the shop

Just needs 3.3V power

[violet torrent]

I mean, something small like a QT Py would be good, I don't want the internals to be too visible

[icy moth]

https://www.adafruit.com/product/1362

[regal horizon]

could use a qt py with a cap touch breakout board

[icy moth]

Oh it can do 5V power

[regal horizon]

https://www.adafruit.com/?q=capacitive+touch&sort=BestMatch

[lean stone]

if you're looking for something designed to be wearable, Gemma M0 looks like it has built-in touch sensing support

[icy moth]

Yeah, I only suggested the stand alone touch controller since it would be easy to use and no programming required 🙂

Just power and your touch strips

[violet torrent]

I mean, I'm not afraid of some programming ;p

[regal horizon]

yeah the Gemma M0 looks like a great fit.

"All three pads can also be used as hardware capacitive touch sensors with no additional components required"

[violet torrent]

I already would need to do some for when the pin is touched anyway

oh wow that's tiny

[regal horizon]

has on/off switch and lipo battery capable

[icy moth]

Oh I figured programming wasn’t an issue, the touch controller is just fun to use. But a QtPy or Gemma wild be a good choice as well

[violet torrent]

that's fair! it would probably be cheaper for me to just get the controller cause I can use whatever other stuff I already have

but if I want to keep size and parts down, the Gemma sounds perfect

[regal horizon]

it doesn't do lipo charging so you'll need a separate way to recharge a lipo battery

[violet torrent]

the Gemma doesn't?

eh that's fine, I'm probably going to use the AA JST pack I already have anyway

[lean stone]

correct, Gemma seems to lack built-in charging capability. probably partly due to size and partly due to wanting to be able to safely support alkaline battery packs

[regal horizon]

i usually recommend the 259 https://www.adafruit.com/product/259

because it can do pass through charging allowing you to charge the battery and work on coding

i have about 4 of them, they work great

[violet torrent]

I use my JST AA pack more than I ever used the LiIon pack plus I have approximately a billion AA batteries

I should really make a tester for my AAs cause I just put them all together, no matter whether they're used or not

[regal horizon]

i have a little battery organizer tray that has a built in battery tester, from amazon

[violet torrent]

ooh

[regal horizon]

though if you wanted to design your own battery tester rig for a lot of batteries that would be a cool project in itself

[plush light]

i dont like lipoly packs. they are flakey and ive had a few puff/burst.

[regal horizon]

for wearables the hard can of a AA is appealing. they do make 18650 rechargeable packs that have hard shells

[vivid zinc]

i was just lucky enough to get 5 Pico W's from my local store, only ones with Headers tho, but still good ^^

[regal horizon]

though 18650's are better for projects that need higher amp draw than AA can provide. for small wearable led projects AA is plenty

can always desolder the headers taki 😉

[vivid zinc]

oh i have no desolder tools here atm xD

[regal horizon]

oh the W has that weird spacer thing.. can it be desoldered?

[plush light]

can you use a single 18650 without a bms etc?

[regal horizon]

yes if you use a proper charger

[violet torrent]

That's the WH iirc

[pine igloo]

Hi all,
I keep getting this error, unsure why it is/how to fix.
Error:

ValueError: The future belongs to a different loop than the one specified as the loop argument

Code:

#Allows connection.
@app.before_serving
async def before_serving():
  try:  
    loop = asyncio.get_event_loop()
    await client.login(TOKEN)
    loop.create_task(client.connect())
  except:
    print("e")

[regal horizon]

it's what i use my 259 for nofish, i primarily use a 3x 18650 pack.

[vivid zinc]

WH just means with headers pre soldered (the H)

[plush light]

ah

[regal horizon]

With Headers

[vivid zinc]

W = Wireless H = Headers

[regal horizon]

or that

[plush light]

the spacer thing is the custom header base?

[regal horizon]

yes

[icy moth]

I think you need to create your tasks and then do your async calls

[violet torrent]

no, the WH and the H are different

(to their non H counterparts)

[plush light]

O_o

[regal horizon]

it's more efficient for them to use that header spacer with large production runs, they probably got a better deal on it than conventional pin rows.

[vivid zinc]

https://www.notebookcheck.net/Raspberry-Pi-Pico-W-Pico-H-and-Pico-WH-introduced-with-802-11n-Wi-Fi-and-a-new-3-pin-debug-connector.632543.0.html

[pine igloo]

Wdum exactly? Its two systems using websockets so ye...

[vivid zinc]

no clue, read that, i'll do that now as well 😄

[violet torrent]

Pico H vs standard Pico

[vivid zinc]

oh, does not explain it more detailed either

but why did the Pico H launched with the Pico W and Pico WH?

"the Pico WH will not launch until August." i bought a WH?!

[plush light]

cause it got the new headers

[violet torrent]

the Pico H has no castellations, and the special debug header, probably for like, education use and such so that kids dont have to potentially burn themselves

[icy moth]

Disregard:P but #help-with-circuitpython would be a better place to ask so it doesn’t get buried. But I think order of precedence seems to be the issue.

[plush light]

oh, i see tghose too

[regal horizon]

yeah castellated pads to use as a drop in module for larger pcb designs

[pine igloo]

Probably, I did get it from a stack overflow post haha

[violet torrent]

i haven't seen any pics of a WH, even from RP themselves, so I doubt you got the WH? Maybe your local seller just soldered some up (my local seller sells Picos with presoldered headers that aren't H)

[vivid zinc]

so did semaf electronics scammed me? xD

i am confused, they call it WH because it's Pico W with presoldered headers, the other option, jus Pico W was not in stock so i bought the ones with headers

[violet torrent]

They called it H cause it has a different board built for the pin jig they have, and the special debug header

[plush light]

probably not a scam, probably you wont get it for a wile

[plush light]

ooor not

haha

[violet torrent]

That's just a Pico W with soldered headers, not a Pico WH

[vivid zinc]

well, no clue they listed it as WH

[hearty karma]

Maybe they meant "w/h" as in "with headers", but the / got filtered out as a special character?

[violet torrent]

it's still clearly a W tho

[vivid zinc]

so again, i am stupid sry, what the H actually stands for then? Once it comes out

[plush light]

pics online are inconsistent of pico, pico h. no picture of the wh at all i can see.

[violet torrent]

this

[vivid zinc]

pin jig?

[regal horizon]

great soldering job tho

[vivid zinc]

ahhh

thanks for clarification

❤️

maybe the seller is confused himself ^^

because he edited it meanwhile in his webstore

[regal horizon]

no, no that was on purpose

but it really doesn't make a difference, pins are pins, you don't need the cross brace for any reason whatsoever vs hand soldering.

[plush light]

ah, yes "Pico H ($5) and Pico WH ($7) add pre-populated headers, and our new 3-pin debug connector, to Pico and Pico W respectively. Pico H and Pico W are available today; Pico WH will follow in August"

[warm musk]

might give the stronger on that part

[vivid zinc]

i am just happy i got it so fast without waiting. Was not aware of such a good local electronics store like some minutes away from my home ^^

[plush light]

from the pi site

so you just got a pico w with some predone headers, not the WH

makes sense now

[regal horizon]

it's just a matter of convenience to get a version with pins presoldered. i actually like boards without presoldered headers because i enjoy soldering them myself.

[vivid zinc]

me2 but he only had that ones

[plush light]

i like versions with headers and my project pre coded. cause like the result but not the work... hahaha

[violet torrent]

i can't wait to get my hands on the W

[regal horizon]

then it doesn't make a difference. i mean if adafruit is out of stock of a board and only has a board with headers version and i want it i'll still get it. it's not a dealbreaker

[warm musk]

that header design is cool too

[regal horizon]

it's different for sure

[warm musk]

could be nice to solder

[violet torrent]

there is a difference, but if you're just looking to use headers, it's not too different

[regal horizon]

pins look really thick too, bet they fit snug as a bug in a breadboard.

[plush light]

debug headers is the real dif it seems

(and the pads)

[vivid zinc]

most shops only allow to order one, and shipping was more than the pico w itself, so i did not ordered but searched for electronics store here

[violet torrent]

Was gonna say, the pads are a big thing

[regal horizon]

most people aren't going to need debug headers unless they're trying to design their own in which case they'll probably get the version with castellated pads instead anyway.

[plush light]

pi pico WHR - coming never!

😛

[violet torrent]

R?

[plush light]

reset

haha

[regal horizon]

lol

[violet torrent]

oh haha

[regal horizon]

i saw the captain resetti add on board yesterday, that little thing is funny.

[violet torrent]

I really don't know why it exists as a pin but not a button

it's a shame it doesn't fit on the W

[plush light]

size, layout, money, dunno

[regal horizon]

i'm sure there will be a pico w version coming soon.

if adafruit can add a reset and boot button to a qt py it's not because the pico doesn't have enough space 😉

[plush light]

fair

[violet torrent]

you could definitely fit one on the board, the Wifi module being a case in point XD

[plush light]

maybe its to teach you to get your code right first time?

[regal horizon]

lol

[vivid zinc]

lol i soldered a reset button on my normal pico, desoldered from a burnt Arduino Nano clone 🥲

[regal horizon]

more likely they're sponsored by a government agency that never wants you to turn it off 😛

[violet torrent]

I was gonna design my own shim that also does LiPo and such but gave up

[plush light]

haha

we needs to monitor all your pies!

i mean they

runs

[regal horizon]

nice mod

[plush light]

so what is good about the pi pico (vs say a feather m0, or just a pi zero

i guess price

[regal horizon]

nice and slim... so they can add a lift kit to the pico but can't add a reset button hmm.

[vivid zinc]

😄

there is def enough space for a reset button

or at least some jumper contacts so you can put your own on with ease

[regal horizon]

but they'd have to move that beautifully massive logo somewhere else

[plush light]

ha

[plush light]

ah, faster more ram too

[regal horizon]

yeah adding some solder pads so you could at least add your own surface mount buttons on it would have been nice. even if you had to connect them to pins with jumper wire would have been acceptable.

[vivid zinc]

pi zero is no microcontroller? ^^

[hearty karma]

A Pi Zero is more of a small computer than a microcontroller

[plush light]

yeah, bad comparison in some ways.

was just trying to see why the pico is "special" vs everything else

[rugged elbow]

PIO is pretty useful

[plush light]

oooh

thats cool

now can it read a sine wave linear scale with pio then output quadrature? 🙂 haha.

[hearty karma]

The Pico offers a fast dual core for an attractive price

[plush light]

yeah. so the rp2040 feather is kinda the same thing in feather format for more money? or does the pico have anything special over it? (obviously not counting the new wifi)

[icy moth]

I feel like an RP2440 (Cortex M4 based chip) would just blow the competition out of the water

The RP2040 already has the advantage of being about the same price to design around as other Cortex M0 micros, but is dual core and much faster

[plush light]

single chips are $1, seems like a fun thing to attempt haha

design one with terminals

[hearty karma]

The Feather offers the usual Feather features (battery charger, etc) but is otherwise similar to a Pico

[plush light]

ok, thats what i thought

[lean stone]

Pico seems more like a RP2040 breakout board?

[hearty karma]

Basically

[plush light]

yeah, was just thinking that. no point making a terminal version, instead just mount it to a pssive terminal base

[icy moth]

External flash, crystal, and bean parts for power pins, I think it still comes in under $3 buying singles, under $2 if doing large quantities

[hearty karma]

That's the sort of modular approach I enjoy

[icy moth]

Pico is great for just plopping on a design and running

No need to waste time recreating something that will cost you more time and effort

[vivid zinc]

can you buy RP2040 in trays?

[plush light]

im trying to figure out a cnc controller solution. i dont like most of the ones you can get right now (for cheap)

adafruit sells 10 packs. thats all i see

[icy moth]

As far as I know, just reels of 500 and 3400

[plush light]

ah

[icy moth]

Wouldn’t be hard to print a tray to hold strips of 10-15

[vivid zinc]

are the some "clones" of the pico floating around already for cheaper?

i mean, 6$ is peanuts ^^

[plush light]

i dont see how they can be much cheaper

haha

[vivid zinc]

but i just wonder

[icy moth]

I could barely sell for $9 at micro manufacturing scale

If I could have bought thousands of parts I probably could have competed at $5-6 with USB C and a neopixel

[plush light]

ha

censorbot wins

[vivid zinc]

oh seems like the thing i mentioned is so crap, it even got censored

[plush light]

haha

nah it was the W word

[vivid zinc]

no it was this weird crypto curr with microcontrollers

[plush light]

censorbot here is rogue. kinda funny.

[vivid zinc]

which i think cannot make any profit?! xD

[plush light]

phase 1: buy pi pico

phase 2?

phase 3: profit!

[vivid zinc]

xD

phase 4: build a microcontroller farm

[plush light]

that was one idea for my mac pro cases. how many pi zero 2's can i fit in one case

but it seems we can't buy them anyway

also, im not sure how id wire them. wifi would not be happy in that scenario either

how many pi's beat a threadripper for rendering

ha

[vivid zinc]

stack them to the moon, maybe you're fine then

don't forget your wifi repeaters

[hearty karma]

GPUs win for rendering

An X86 threadripper would be operating at a disadvantage

[vivid zinc]

is somebody here into GANs?

[hearty karma]

I'm more into CNNs

[vivid zinc]

i love all that, but too much for my brain to make something on my own ^^

[plush light]

Not even close actually

[vivid zinc]

but such fancy stuff from just text input, upscaled for sure, only have 8GB VRAM 😦

[hearty karma]

I'm picking up the concepts as I go along by building simple models and going through online references and tutorials

[vivid zinc]

hasn't google recently launched or announced their own one?

[plush light]

dont know what a gan is

[vivid zinc]

"Generative Adversarial Networks"

[hearty karma]

I have sometimes stood up monster training machines with lots of hardware acceleration on Google Compute Platform to do big builds. I just delete the virtual machines when I'm done.

[plush light]

well i know that part, hehe. but i dont know what they are for

[vivid zinc]

VQGAN+CLIP or DiscoDiffusion colab notebooks are nice to check, and free without using your own GPU power if you want to test it yourself. Free Plan is pretty slow tho, so if you can and have enough VRAM, you better use your own GPU

[plush light]

doesnt have any gpu power

the gpus used all the power :x

[icy moth]

I’m going to make the RP2040 B (B for Bluetooth 😉 )

[hearty karma]

I can't use my own GPU any more due to an inter-company feud

[plush light]

does it not already have bluetooth?

[vivid zinc]

or that, one of my favorite outcomes 😄

[icy moth]

This would just be strictly Bluetooth, no WiFi

[plush light]

ah

sooo these networks make nightmare images?

[icy moth]

Don’t always want WiFi when you do Bluetooth

[vivid zinc]

you can feed it with parameters and text prompts and it generates images with pretrained models

[plush light]

oh, so its a bit like the dall e thing?

[vivid zinc]

The WiFi chip on the Pico W also has Bluetooth which is not yet supported, is that true?

Ohh, that was just the topic i guess?

[icy moth]

Also apparently the Bluetooth bit isn’t supported in software yet, just a hardware capability

[hearty karma]

Jinx!

[icy moth]

Lol

You owe me a high five because other forms of compensation are predatory

[plush light]

O_o

[icy moth]

It’s usually Jinx, you owe me a Coke (if from Texas) or Jinx you owe me a soda

[vivid zinc]

[plush light]

jinx you owe me your life savings and first born child?

[icy moth]

But I’m not a big soda, pop, coke drinker so.. high fives are healthier 😂

[hearty karma]

Free oscilloscope? Just pay shipping...

[icy moth]

Soda/pop/coke cost money. High fives cost you 20 calories

[plush light]

20 calories, how high is this 5?

[icy moth]

It’s a jumping high five

Like from the old Smosh videos

[outer brook]

so....about that

[hearty karma]

What, you want one? One of my activities to keep myself sane during the lockdown was going through the pile of old broken oscilloscopes I had accumulated over the years, and repairing them. I now have a pile of working old oscilloscopes.

[steady cargo]

Edit: Moved post to #help-with-robotics: #help-with-robotics message

[icy moth]

What would it take to safely ship one? 🤔

[outer brook]

I was mostly kidding. I am in the market but I think paying to ship an old one (safely as skerr mentioned) would cost a pretty penny

[hearty karma]

They're not that hard to ship, with the right anchoring, padding, and double boxing, they travel well. However, all that packaging and shipping for a big heavy instrument isn't cheap.

I used to ship a bunch of things via Consolidated Freightways, but they went out of business. These days, it's usually Pilot Air, Forward Air, or via railroad (if the recipient is near a railroad stop)

[pearl frost]

I've been using pirateship a lot recently

Shipped a 60" 11lb box for like 15$ through ups
Pretty nutty

[plush light]

shipping to canada will cost $6663445

shakes fist

[hearty karma]

For small things, I also use PirateShip. But for heavy bulky items like old vacuum tube oscilloscopes, pinball games, and high-end speakers, I use the aforementioned freight hauling services.

[pearl frost]

Pinball machines I get but I'd think scopes would fall in their purview

That said I've never tried so lel

Shipping pinball machines sounds disastrous tbh
Though I guess they're designed to be jostled a lot

[hearty karma]

Normally you remove the balls, legs, and backboard to ship pinball machines. Scopes vary from lunchbox sized ones like a Heathkit HO-10 (which are not a big deal to ship) to the chonky classic ones like an RCA WO-88A, which take some careful packing to ship safely, to the big hulking monsters like a Tektronix 535, which can be worth making a wooden box or strapping to a pallet to ship.

[pearl frost]

Do these analog scopes have particular benefit over modern digital ones?

[thick prawn]

Yeah well...I don't know

I didn't have to do anything

My router does DNS, I like my hostnames

[icy moth]

Audio

[thick prawn]

I do not understand much networking peripherals as of yet, I'd like to maybe some other time

[icy moth]

Analog scopes are much better for audio related projects for.. obvious reasons lol..

[thick prawn]

skerr now that you mention audio, I have a weird question maybe

[pearl frost]

You definitely had to do something at some point because nothing will translate hostnames to domain names by default

Unless you're talking about something like octopi.local or other .local

Which is mDNS

[thick prawn]

I recently learned about Fourier transforms. Just how useful is it in audio? I heard the transform can be used, but how, is it that big?

[pearl frost]

It's the most important thing in digital audio I would say

[thick prawn]

Oh really

Because of its ability to pick out frequencies? Or what

[pearl frost]

Take a look at how a basic DAC works

[icy moth]

I had a conversation with someone who builds professional recording studios and tons of studios are going back to using tube based recording hardware because the sound is much better

[thick prawn]

OH

WOW

HAH

[pearl frost]

Every time I see this it smells like spooks

[icy moth]

There are a few companies trying to get back into manufacturing tubes for professional audio

[pearl frost]

Tubes are straight up noiseier

And less linear

But some people like that noise and nonlinearity

[icy moth]

With the right setup, tubes are actually much better

[pearl frost]

And yeah I've seen the new micro tubes they're doing

I just don't believe that at all

In every empirical test I've seen tubes preform strictly worse

In terms of input signal in -> out exactness

[thick prawn]

Hmmm. No. I just ssh raspberrypi and I'm in

I swear, I have no memory of explicitly configuring this

[pearl frost]

Sus claim

[thick prawn]

I swear

[pearl frost]

It sounds likely you probably configured locally but because you probably use DHCP instead of static at some point the pi changed addresses

Which means that name would no longer point

[thick prawn]

What...

The router still shows it has 2 IPv4 addresses locally, one for wlan0 and one for eth0

Is that IPv6? Why is ping showing IPv6

I really need to study

[pearl frost]

attlocal.net

[thick prawn]

I'm lost here

[pearl frost]

maybe these do come with a DNS server that auto-resolves hostnames
funky!

[icy moth]

But tubes perform better at higher volumes. Instead of hard clipping that solid state amplifiers cause, in tube amps for instance, overdriven audio is smoother. Something difficult to achieve in solid state amps

[thick prawn]

I swear, I did nothing to make it happen

[icy moth]

And tubes like any amp still needs good filtering

[pearl frost]

and yeah that's ipv6

you can do ping name -4 to force ipv4

[icy moth]

You can have a top of the line solid state amp and still have horrible quality

[thick prawn]

Huh, it pings the ethernet address by default

[icy moth]

But ultimately it becomes a matter of preference of what you prefer sound wise

[pearl frost]

both interfaces will have the same hostname

well, should

[thick prawn]

Would it default to ethernet?

I don't understand how it decides then

[pearl frost]

dunno it's up to your router

[thick prawn]

Hm

[pearl frost]

this is extremely router-specific behavior

[thick prawn]

I see

[pearl frost]

I've never seen a device that would do this

[thick prawn]

Would you normally have to use IPs?

[pearl frost]

I generally just drop stuff in my hosts file

[thick prawn]

Where

[pearl frost]

besides that you would need to create a DNS server which your router appears to automatically do

[vivid zinc]

Can i somehow make the Pico show up as drive using Micropython like with Circuitpython?

[pearl frost]

https://en.wikipedia.org/wiki/Hosts_(file)

[thick prawn]

Thanks

Just curious

Again, this is all worth studying

Need to up my networks game

[pearl frost]

if you want to learn just pick up the CCNA book

[thick prawn]

Heh?

[pearl frost]

cisco certified network associate

covers the vast majority of networking basics

[thick prawn]

Interesting

I'm going to work on a cisco cert in computer management

Provided by my school actually, that should be cool

[pearl frost]

this is one step above their entry level basic cert iirc

[thick prawn]

Yes

I think they have networking, and computer management is a step below

[pearl frost]

guess you learn something new every day though re:dns server that uses hostnames

[pearl frost]

yeah if your goal is getting overdriven distortion that's a whole nother thing which I can understand

[icy moth]

I think if you record a lot of rock/metal, that there are big benefits

[plush light]

if its clipping just get something with more headroom. Guitar amps are all subjective ("i want the noise i heard on the radio in 1968") though. It is all magic and voodoo, some real, most of it not.

[pearl frost]

I would put actual real money down that the majority of use isn't going to have any real benefit or advantage and it's mostly headology

[plush light]

i have a fender champ and a blackheart 1w tube amp. also have a fender 15g (starter cheap solid state amp). i tell myself the champ is obviosuly better, but really it is just different

also have a fender mustang headphone amp recently but have not got good headphones right now to judge it

[pearl frost]

I still git a laff that the apple usbc dongle outpreforms many audiophile dacs

[plush light]

ha

[pearl frost]

no realli

and the khadas tone board at 110
is a 99$ rasppi hat

[plush light]

latency is the issue. most of the insterfaces (mine is m audio) are pretty good thse days, it just comes down to the latency. i look for 5ms or better which rules out 99.9% of the usb consumer stuff

[hearty karma]

It's true. Apple can really dial in some good designs at attractive price points when they feel like it.

[pearl frost]

a rasppi hat

of all things

[plush light]

theres a pi (and arduino) one i was interested in. i forget who made it.

ssi interface

[pearl frost]

at some point someone took the khadas tone board and put it in a box for 300$

this site reviewed it and the users looked at the graph and when "hold on that's very similar to the tone board"

lo and behold

[plush light]

ha

well the tone board 2 seems to be $250

[pearl frost]

oh theres a new one huh

[plush light]

ah $79 for original

[pearl frost]

oh neat its in a case

yeah the og doesn't have a case which is a big flaw lmao

I thought the rotary control is just for volume. It does that but if you push it forward different ways, it engages various configuration mode. They are incredibly hard to decipher. The manual is of no help but there is a video that walks you through it. After watching it, I could sort of change things but this is by far the most overloaded functionality I have seen in an audio device, next to horrible Chord interface. The fact that the light is below the rotary control makes it doubly hard to figure out what is going on. I rather not have all the functions than having to cycle through them this way. It is truly maddening.

[plush light]

new one has asio drivers

curious

not sure what is good/bad about it vs my m audio which was like, $199cdn

[pearl frost]

it looks like it's somewhat of a marginal upgrade over the basic tone board

but it does come with a box!

(then again everything is a marginal upgrade at this point)

[plush light]

thats whats inside the mustang

not much bigger than a feather

[regal horizon]

i use m audio too (oxygen 61 key). latency is definitely noticeable but once you get used to it not so bad.

[plush light]

i think mine is 10ms. noticeable but borderline. I think i'm more sensitive than most.

some of the usb ones are horrid though. 20-40ms

[regal horizon]

sounds about right on paper but in practice mine acts more like 30ms yeah

using it with ableton pro

[plush light]

my creative pro card (remember those?) would do 5ms, which was perfect to my ears

at the time i used cubase

with vst plugs

[regal horizon]

maybe because i'm using usb and not midi

yeah i use vst's heavily

used to use acid pro but over the years their vst support was abysmal. couldn't be beat for sampling but midi wasn't their strong suit. then ableton came along and blew them out of the water.

[plush light]

the mustang has no latency noticeable, but if you connect it to usbc its like 40ms. so its for recording but not monitoring

cubase came with the creative card and i just stuck with it

[regal horizon]

sounds like i need to find a way to use midi instead. was unaware the latency difference between usb and midi was that big. now it makes sense. i don't use it that often so wasn't a big deal.

[plush light]

i dont know about midi, the creative was a pci card. like in the olden days.

[regal horizon]

also i'm not using with a sound card or mixer, just straight into the pc as a controller

[plush light]

even pci express you were told not to use for latency reasons

actually its the same with CNC haha

[regal horizon]

pcie vs pci has come a long way though. i mean m.2 speeds are very impressive.

[plush light]

firewire was low latency, but its basically dead now

[regal horizon]

yeah i used to use firewire too

[plush light]

not sure what other options there are

[regal horizon]

handycams back then were all firewire

[plush light]

ah yeah

id like a wireless system but the good ones are too much money

[regal horizon]

one of the cool things about watching JP's streams is i learn a lot of new stuff.

[plush light]

i wonder if the pi can do vst. from memory, they didnt take much cpu

[regal horizon]

someday i'm going to crack open my turntables and modify it to be wireless.

[plush light]

haha

my guitar project right now is for the kids, so i just want wireless so theres nothing to trip on

[regal horizon]

ahh those guitar cords are dangerous

and thick, you feel lucky if you trip and it pulls out the 1/4" jack

ah yeah i remember seeing you post that before. hows the project coming?

[plush light]

its just waiting for me to have more time for it

i need to finish making the fixtures on the cnc

[pearl frost]

Need cnc

Reee

[plush light]

cnc good

better than using teeth

[regal horizon]

Beautiful

[plush light]

i intend to sell the cncs too one day, but right now the price is too high. need to figure out some clever savings

[pearl frost]

I've gotten pretty decent at using hand files

But it's still so laborous

[regal horizon]

Dremel?

[plush light]

ha

[pearl frost]

Lel

[plush light]

dremel with a carbide burr

[pearl frost]

Most of the things I've worked with tend to be rather annoying to Dremel

[regal horizon]

They’re actually really good at aluminum but the teeth get filled up quick. I operated my engine with one. ☺️

[plush light]

cnc is more fun though

[pearl frost]

I think one of the coolest materials science things I've seen is filing off weld scars on a hardened part

[plush light]

stainless is a special child

[pearl frost]

The weld scars would just file off in seconds and then you'd bounce off the hardened steel

So cool

[regal horizon]

Umm yeah I tried stainless once… once.

[plush light]

hardened steel is easy to machine compared to stainless.

[regal horizon]

If you have a CNC then a dremel probably looks useless.

[pearl frost]

Not the steel I was working with

Old spanish cetme C trunnion

Unbelievably hard steel

[plush light]

im good at machining my vises by accident

😛

the dumbed down analogy for stainless is trying to machine rubber. its not technically hard, but it doesn't like to cut clean

[regal horizon]

CNC depends on good code. The way I code I shouldn’t be allowed near a CNC. 🤪

[plush light]

hahahahahah

[pearl frost]

I had to drill some titanium recently

That was fun

[plush light]

https://www.youtube.com/watch?v=q4Faf_PKPAM

i drilled my titanium bike handlebar

[pearl frost]

particularily because the titanium pulled itself up the drill bit and got stuck there

so it was stuck between the flutes

[plush light]

well, i dulled the drill and kinda marked the handlebar

i switched to a carbide bit and it went easy

titaniums big issue (besides being hard) is you need to keep it cool, which means cutting very slow.

anyhow, thats an example of a bad cnc program up there 😛

[pearl frost]

it's a pretty fun metal

[plush light]

sooooo slow

[pearl frost]

so warm feeling

it's weird for metal to feel warm

[plush light]

low thermal conductivity? stailess it also low

[pearl frost]

my carbide bits just skipped off of it because I was curious

luckily I don't need to drill it

yeah because of the low thermal conductivity

I'd never handled a large chunk of titanium so it was a bit surreal

very much flips around a lot of what I've mentally learned is "metal"

[plush light]

man that video is bad. george cant hold a camera stright haha

[pearl frost]

like we kinda group things into metals and not metals by touchey-feel

and titanium is just different

[lean stone]

high thermal conductivity ceramics like beryllia are mind-bending to touch for the opposite reason

[pearl frost]

oh that does sound fun

[plush light]

https://www.youtube.com/watch?v=5AQAac7iMWY

[pearl frost]

ceramics are weird

[plush light]

i want that machine

[pearl frost]

"so, ceramics are insulators right"
"well
yes, but actually no"

[plush light]

ha

like on that mag lev train in japan. i did an animation for it.

[lean stone]

beryllia is super toxic, especially when powdered, so you're more likely to run across alumina ceramics, which aren't quite as thermally conductive, but still used in similar applications

[plush light]

ceramics have curious properties

[pearl frost]

reminds me I need to buy some tungsten powder

[plush light]

alumina i have used, but not for anything interesting

glass molds

[pearl frost]

trying to make a watch escapement out of 3d printed resin and the balance wheel is just too light

and I don't want to make it bigger so
lets try mixing in tungsten!

(resins are super cool because you can mix arbitrary stuff in)

[plush light]

oh, no thats aluminiate. i confuse them all

[pearl frost]

whats going on here

[plush light]

O_o

where?

[pearl frost]

there

[plush light]

in the picture?

ha

[pearl frost]

yes

[plush light]

demoulding cast lead crytal cats

from some sort of aluminate plaster

[pearl frost]

ah I see
what were the cats for?

[plush light]

what is any cat for?

fun

xmas presents mostyl

ha

[pearl frost]

neat

[plush light]

masters were cncd from aluminium. then made waxes. then mold

pretty fun

ha

[pearl frost]

Lead glass, commonly called crystal, is a variety of glass in which lead replaces the calcium content of a typical potash glass.
I've literally wondered this for years but never bothered looking it up

[plush light]

yeah, this is 50% lead. it loweres the melt temperature and is more forgiving when annealed. so it allows much more complex forms without having them shatter

[pearl frost]

transparent lead!

shame it's toxic
really useful metal

[plush light]

it is not toxic in glass form

for general use

it was a problem with wine cause the alcohol would leach out the lead over years

[pearl frost]

In the medieval period lead metal could be obtained through recycling from abandoned Roman sites and plumbing, even from church roofs.

[plush light]

ha

[pearl frost]

holy heck this started in mesopotamia

so as long as theres been glass theres been crystal

recipe for lead glaze appears in a Babylonian tablet of 1700 BC

[plush light]

it was the first. soda lime glass we use today was not makeable back then

today all this glass comes from one company in NZ

and corning if you want crystal clear

this is corning. its only 24%

[pearl frost]

oldest producer according to this list on wikipedia is from 1756 which is pretty neat

[plush light]

thats gaffer

50%

you can see the difference

[pearl frost]

It has been proposed that the historic association of gout with the upper classes in Europe and America was, in part, caused by their extensive use of lead crystal decanters to store fortified wines and whisky.[19] Lin et al. have statistical evidence linking gout to lead poisoning

[plush light]

first one has zero colour

[pearl frost]

far more interesting rabbithole than expected

neat projects btw

[plush light]

haha

thanks. the blue one isnt mine. thats a famous artist that my shop cast for.

the skulls were for another famous artist too, but we had spares

so i smashed them

[pearl frost]

bonk

I've always thought the sfx and such industry would be super fun to get into

I'm a programmer now but I've always enjoyed arty stuff more

[plush light]

well, the guy that rand the shop was an artists in the 60s, then got more into commercial for money, doing awards. but it all kinda dries up and all that was left was a couple artists in town. 3-4 jobs a year.

so in the end he wound up in the corner of my shop and then they tore the building down and he retired

[pearl frost]

rip

that's the rub of it isn't it

[plush light]

the industry is basically dead

[pearl frost]

I just make money this way

whereas art like

effort and such

[plush light]

yeah

it is debatable who the artist is on the skulls i think (on a technicality level). the artis literally bought a skull, brought it in, and came back to pick up finished glass ones

to sell

ha

[pearl frost]

it do be like that

[plush light]

but the blue one (irene) she hand carves each wax

so they are true one off

[pearl frost]

I had a friend who I think is still doing art

who like

incredible anatomy sculptures

all he does is make willys with faces on them and such tho

[plush light]

hahahaha

tht one is neat

she put copper in with the glass

she did one with aluminium too, but that failed

[pearl frost]

ever seen raku glaze

[plush light]

i think so

[pearl frost]

very heavy metal glaze

[plush light]

ah right

[pearl frost]

we did it in highschool

[plush light]

the shop next to use was pottery

[pearl frost]

you could mix copper shavings into it and they would drip down

very cool

[plush light]

https://www.hannunlyn.com/

she quit too after the building went

sigh

they did ok ish with custom dishes for trendy restaurasnts

[pearl frost]

starving artists etc

[plush light]

yeah. one of her co worker wound up learning animation and went to my studio haha.

so then hannun was like "um can you teach me that too, i need a job"

technically my job is "artist" but i dont think that word fits

not the same way

[pearl frost]

yeah and I was until recently a "business consultant"

[plush light]

hehe

i know some "sandwich artists"

[pearl frost]

I had never consulted business
just program

[plush light]

ha

sound right

some peope in my studio count as artists i think, but not me

[hearty karma]

There's a local non-juried art show around here from time to time and I'll enter pieces, even though I'm probably not a proper "artist"

[plush lake]

Yeah so bought the chisel tip for the ts80p and and it is so much easier than the pencil tip.. in fact I’m wondering if the pencil tip might not have been working properly..

[plush light]

how large a thing were you trying to solder with it?

[rugged field]

wait how do you make it so a net is tied to 5v but when I power something it gets tied to ground

like a not gate but if the output is off then its grounded

is that how normal not gates work

im confusing myself

[plush lake]

Gpio headers

[plush light]

ah. yeah the pins will sink a lot of heat. i always thought the pencil ones were for tiny thinks like tiny pins of a chip or 0603 sized cap etc

i dont think ive ever used the pencil one (i suck at soldering anyway)

[native hare]

Are there any off the shelf water cooling solutions for the pi

[pearl frost]

Generally you just use vrm waterblocks

Which can be tied into any non closed system

[icy moth]

testing two variants of my bluetooth watch. one with a PCB trace antenna and the other with a micro reach antenna.

not sure which will work better

but it will be an interesting experiment

[plush light]

it doesnt really need more than a few feet of range right?

hm

[icy moth]

yeah, doing matching networks for antenna is kind of weird so I want to see if the PCB trace antenna with the nordic suggested T network works better than the Micro Reach 2.45-2.5GHz chip antenna with the L matching network from their design document

both scenarios assume the most ideal RF conditions on the board it's implemented on.

and a 50 ohm impedance trace to the controller.

but yeah, it doesn't have to be great performance, just enough for a few feet at most.

[plush light]

maybe i should pay you to draw me a feather sense/ clue pcb that better fits a bike computer with a bigger daylight screen than the clue has

😛

(i have no idea how many hours that type of thing is)

probably too much

[icy moth]

lol if you don't need super fast refresh rates, e-ink displays would be better in direct light

[plush light]

e ink i looked at, refreshes are kinda ok, but i need colour and i then need night lighting

well, want colour, need is subjective

[west fractal]

regular Pi Picos sold out really quick on adafruit's site

[plush light]

were they even in? i saw just a coming soon

oh, regular

[west fractal]

If these were done by scalper bots

RIP for them since these are not Pi Pico Ws

there are still tons of stocks on DigiKey

[icy moth]

They have multicolor e-ink

[plush light]

yeah those are even slower, and dont see many with lighting.

i assume id need to add my own

it would make the battery last 20 time slonger though

the bulk of the power use in the computer is the screen. the nrf is only like like 20ma i think

[pearl frost]

Shame about the sharp memory displays

Fast, low power, multicolor

[plush light]

what happened to them. just dicontinued?

i remember them looking chromey

[lean stone]

https://www.adafruit.com/product/4694 seems still available?

though that's only monochrome

[plush light]

yeah i remembe rnow, there was a colour one that never made it out

the monochromes are neat

rater expensive

hmm

well, no not really i guess

[violet torrent]

ended up purchasing some Pico Ws along with that Gemma y'all recommended

[gloomy mango]

I should get one, but I'm running lean again this month. 😒

[plush light]

if i knew what that was i could tell you

i assume not just a multi meter

[regal horizon]

@violet torrent i'm about to pickup a gemma too for an led candle project. it's a great tiny board with all the right features for small projects.

fluke multimeters are like snap-on tools, way over priced

yeah they're a bit higher quality but the exorbitant increase in price is rarely justified.

[steady cargo]

I wonder why it seems DigiKey is able to keep better stock than Adafruit. 🤔

[regal horizon]

if you want a decent multimeter i can recommend a mastech. great features, dummy proof.

digi-key is a wholesaler while adafruit is a retailer

[violet torrent]

I have a fun wearable project I have in mind, if it works haha

[west fractal]

Digikey is basically adafruit for business

The relationship between digikey and adafruit is really healthy

I am not feeling bad for adafruit when I have to buy from digikey instead because I know am supporting both of them

Unlike Sparkfun

[steady gulch]

every reseller is a friend !

[west fractal]

Yeah, but sparkfun just doesn't seems right

Higher price, non existence user guide, HASL PCB finish (to further keep cost down and use lead to pollute our planet)

[plush light]

i always buy digikey because it gets here next morning with no fuss. when i ordered from adafruit webstite i had some ups broker issues. (ups in canada are scammers)

[west fractal]

Oh no

[plush light]

sparkfun stuff was usually in my local store actually. they had a few adafruit things, but mostly spark fun

[west fractal]

Oh no x2

[plush light]

haha

[west fractal]

I only purchased from spark fun once

To tryout their NRF micromod

Thanks to spark fun learning system, I wasted 2 hours try to flash a U2F bootloader on it

I have to say Adafruit learning system spoiled me, it's just that good

[verbal aspen]

I think you can do HASL with either leaded or lead-free solder.

[plush light]

the planet is full of lead, its only bad if you eat it. 🙂

[lean stone]

airborne (or waterborne) lead is a bigger problem than lead in the ground, but those are mostly solved problems

[plush light]

as with most things, its the actions of extraction, mining, processing, etc that are the dangers (to people and env)

[rugged elbow]

Well, unless you were around in the 70s and 80s breathing in the fumes from leaded gasoline. 😋

[steady gulch]

and disposing in nature, in the trash, polluting water...

[lean stone]

or work in manufacturing that still involves lead, or general aviation with piston aircraft, or…

[icy moth]

I’m remembering I have some 5/16 or something like that acrylic squares that I want to use my Dremel tool on to make a design, then print something to hold it and edge light it with neopixels. Seems like a cool idea

[plush light]

edge lighting is cool. theres a special acrylic for that to make it light up super bright, but its really expensive.

used to do it for signs and displays

[icy moth]

Yeah, I just have basic acrylic I bought for an infinity cube project

Which I need to fix now that I’m thinking about it

[plush light]

i want an infinity house

:x

[icy moth]

Same

[plush light]

https://solutions.covestro.com/en/brands/makrolon ahh its a polycarbonate, not acrylic

[icy moth]

Yeah, polycarbonate is nice

But out if my budget of “what do you have on hand”

[plush light]

ha yeah

well right now even acrylic is crazy pirces

i need some for something a while back and it was like $800... "nope"

ha

[lean stone]

hey, anyone know if Atmel-ICE can program or debug non-Atmel ARM devices over JTAG or SWD? (i assume it would need OpenOCD, too)

[icy moth]

Probably could

[verbal aspen]

The OpenOCD user manual says "Only works with Atmel chips!".

[icy moth]

This thread suggests that you need an agnostic IDE

Disregard they mention what @verbal aspen said further in the thread haha

[jade dirge]

For people outside of north america, its a much better deal ordering from Digikey.

[crimson wasp]

Looking for recommendations on good low cost source for individually addressable rgb strip lights. I just discovered wled and using esp32 as a controller. Looks like a lot of fun! I ordered a Govee strip to learn with for starters. Trying to figure out which are rgbic from Banggood is kind of difficult. Any particular source or brand that you all have had good luck with that is inexpensive?

[icy moth]

Adafruit sells strips of RGB LEDs. Amazon, Banggood, Aliexpress are places you can order too but it might be hit and miss on what you get

For learning to program, I definitely suggest Adafruit or if you are in Europe, pimoroni

[vivid zinc]

All of my Pico W's make weird noises, not that loud, but if it's really silent around you, it's noticeable.
Can somebody hold his ear on his powered Pico W and see if it does the same? Is this normal?

Normal Pico does not do this, so i guess the noise comes from the WiFi chip?

[icy moth]

Probably from the buck converter

That’s more likely to emanate an audible frequency that resonates with the switching frequency

[vivid zinc]

Can't wait to get older to not hear those frequencies anymore

[astral lily]

I generally go BTF-lighting via Amazon. Granted I've only bought 2 strips so far, I'm ordering probably a dozen in the coming weeks

[half hollow]

Sharing a project I just finished.
Well...Google & RPI still haven't fix the PCIe issue so I end up using USB 3 chipset with coral TPU .

[icy moth]

Neat! How did you get the coral module?

Are they available again?

[half hollow]

I pre-ordered this one half an year ago lol

[icy moth]

Oh wow

Well very nicely done. That design is very clean

I wanted to do stuff with Coral but they were gone so fast

I still might one of these days when they are more available

[half hollow]

Current stock is pretty bad, I still have 2 pre-ordered on Mouser and I think they slipped the shipping.

[half hollow]

Oh and it slipped all the way to 2023

[icy moth]

Dang 🫠

I’ve been resorting to not so favorable packages of parts to make things

BGA samd51

WLCSP nRF52811

Even considered WLCSP nRF52832 and nRF52840

[crimson wasp]

Yeah I saw those. Looks like they have a high led per meter density. Probably very cool though. I want to put around the perimeter of a basement rec room so I’m probably ok with a lower density.

[astral lily]

They have at least 3 different densities, I have the "middle" one, I think it's 60 per meter? I've got the 12V stuff which groups by 3 for outdoors (going to run first test outside tonight hopefully!), and 5V which is actually individual

[plush light]

they have 30 60 144? and then a crazy one

your typical valence lighting would be good with 30

[hearty karma]

I could use the crazy density one for a costume effect, I wonder where I can get one. Last time I looked, the vendor was overseas and wanted $50 shipping.

[vivid zinc]

when connected via WiFi, the noise stops ^^

or when it's active(True) already

[plush light]

adafruit has none?

i was them in new products a while ago

[lean stone]

what's the state of the art for POV motion toys synchronized to rotation and position, possibly through IMUs? (poi, hoops, staves, etc.)

[violet torrent]

oh no they're making noise?

[rugged field]

I don’t know if this would be offensive but it’s not supposed to be. Your pronouns could be zey/zem because ur username is Z

[plush light]

im offended by the letter z

:x

actually no, im offended by the lack of pizza in my house.

mmmm

[rugged field]

I am also offended by the lack of pizza in my house

[vivid zinc]

not very loud, but you can hear it very well when you're not too far away and it's silent around you. Or if you hold your ear near it

[hearty karma]

One board I built made an audible tiny "click" when I powered on one section of it. I think the source of the noise was a high-K capacitor.

[outer brook]

What is a k value?

[hearty karma]

There are various dielectrics in use in ceramic capacitors. Some give particularly high capacitance, but has some side effects, such as the capacitance changes dramatically with temperature and voltage, as well as being piezoelectric, so when the charge changes, it flexes slightly.

[outer brook]

Ahhh

So particular frequencies provide a literal ringing

[hearty karma]

Yeah, if the capacitor has a mechanical resonance

[violet torrent]

It's funny, I genuinely do use those pronouns sometimes:3

[gloomy mango]

Personally, I don't understand the need or want..
I care about who you are.

[violet torrent]

It just makes me feel validated in who I am in my weird gender-y self

[plush light]

i am anti noun

[regal horizon]

Fish is a noun

[plush light]

that's why i have none

[astral lily]

Similar to the 15kHz whine from CRTs

[naive rain]

How securely do Feathers attach to FeatherWings?

[plush light]

pretty tight press fit.

wont fall out by accident

[naive rain]

Thank you!

[regal horizon]

except for the tft featherwing which has half height female headers when used with another device that has stacking headers. stacking header pins are thinner than other pins. so it can be kind of loose.

if you get a feather get stacking headers with it. it's just a matter of time before you'll want to stack a featherwing on top of it, and another featherwing on top of that. ;P

[naive rain]

@regal horizon if I ever add another FeatherWing to this, it will go between the Feather and the existing Wing. In that case, wouldn't I need to get the stacking headers with the new Wing, not the original one? (The original one is an OLED display, so I can't put anything on top of it 😀)

[plush light]

yes

[lean stone]

why are the stacking header pins not square anyway? i found that they can be loose enough to cause connection problems

[astral lily]

I believe it's because stacking headers are generally wirewrap-compatible

[naive rain]

Also, I will need communication between two boards. One will be a Feather RP2040, and the other will be either an RPiPico or another Feather RP2040. Could I use I²C for this?

I need to transfer text messages up to around a kilobyte between them.

[plush light]

im not an expert on that but normally you use serial

[naive rain]

(it's okay to break the message up if necessary)

Would serial require the boards to constantly monitor the connection or could they do other things for a few milliseconds?

[plush light]

thats a question for other peoples :x

[naive rain]

I'll have one board with a radio, and it will have software that sends and receives messages. Somehow I need to connect that to another board which will run the UI software, so messages can be sent and received using a display FeatherWing and a matrix keypad.

[pearl frost]

I'd question why you need two boards in the first place tbh

Microcontrollers are pretty hefty these days, can do a lot

But besides that UART is generally the most common sort of interface for this sort of thing but you can use whatever

[verbal aspen]

It depends a little bit on how the software is written, but almost all microcontrollers allow peripherals to operate in interrupt-driven mode, so they don't take any CPU time until data is ready to be processed.

[lean stone]

huh, wire pin (DIP) sockets i've seen have all had square pins

[naive rain]

@pearl frost @verbal aspen I'm concerned about missing packets that the radio receives. I want a separate microcontroller that does as little as possible other than handle the radio, to make sure it checks for incoming packets as often as possible. The main processor will be used for the interface (and might run a few lightweight games as well), so I don't want it to have to stop what it's doing constantly to check the radio

[verbal aspen]

Typically the radio will have an interrupt pin to let the MCU know that a packet has been received.

[vivid zinc]

does somebody know where i can get such spi oled modules with a connector pre-soldered(no pin header)?

or any hint what i could search for on aliexpress to find them? Only find ones without, tried "SSD1306 spi connector/plug/etc." ^^

maybe somebody knows the name of those connectors? ^^

i think they are called XH2.54 but also with that i cannot find any 😦

already thinking about buying the connectors and solder them on myself, but i hate soldering

[naive rain]

@verbal aspen the main microcontroller will be running CircuitPython, and apparently that doesn't support interrupt pins. Also, I'm not sure how long my software will take to process packets, and I don't want the software on the main MCU to freeze every time a packet is received.

[verbal aspen]

Gotcha, yeah, CircuitPython changes the concurrency game a bit.

[humble thunder]

woohoo, my Adafruit order is already here

[naive rain]

I'm most likely going to program the secondary MCU with Arduino instead of Python, so interrupts will work.

[humble thunder]

so if anyone was curious, and probably almost no one is, but the new ATtiny817-based seesaw board uses 7.6mA at 3.3v with the default seesaw firmware

[naive rain]

I'm not good enough at C/C++ to write the entire project (basically a minimal OS) in Arduino, but I don't think the radio part will be too hard.

FeatherWings come with male headers but Feathers don't come with female headers, right?

[violet torrent]

they come with the ability to add whatever, it's not soldered, but I believe that's what's packaged with them

[regal horizon]

feathers and featherwings come with standard male header pins. you can turn them into male and female with stacking headers. the male half height headers must also be used with female half height headers. you can't use male half height headers with a stacking female header, the pins are too short to get a connection.

because male stacking header pins are so long i usually cut them in half. even in half they're still long enough to make a connection with female stacking header. by cutting them in half you reduce the free space between the boards for a more snug fit. it requires you to snip all the pins in a straight line, if you get even 1 wrong you'll be cursing yourself.

[devout totem]

Following this guide (https://learn.adafruit.com/lightsaber-featherwing/testing-components) it says to connect every component before pluggin in the battery. What happens if I plug the battery first? Will it burn the Feather M4? Just curious

[violet torrent]

If you power on the Feather before you plug in everything else, it might cause some unexpected behaviours, and might actually fry some components, so that's why it's best practice to assemble and then power on

[devout totem]

Ok, thank you!

[astral lily]

I believe wire wrap, wire pin, and DIP are all different standards. I could be wrong/misunderstanding though. But as far as I can tell, "wire pin" is similar to a banana plug, "wire wrap" is what was often used for prototyping before breadboards became common, and DIP is just "dual inline package", a physical form factor commonly used on older ICs and some other things.

For what is worth, all of the female headers I've used, stacking or not, have flat pins; this appears to largely be for manufacturing simplicity, but I thought they just reused the manufacturing technique from the wire-wrap days, making the pins shorter where needed. All of the male headers I have in stock, appear to be nearly square.

Again, all this with a grain of salt because I'm not a historian or expert; this is just my current understanding.

[mossy glen]

where might I find the animation shown on this display?
https://www.adafruit.com/product/5056

[lean stone]

you can get DIP sockets with wire wrap posts. the posts are square. i think the square cross section (and sharp corners) is actually required for the cold welding of the process to work. it was one common way to build TTL circuits, and i've used them that way. one model of female headers with long posts on Digi-Key had options for solder-type posts that are rectangular in cross-section, and wire-wrap type posts that are square

[wintry widget]

BITD, many commercial production minicomputer circuit modules and backplanes were wire wrapped. Wasn’t just for prototyping. I use wire wrap today for certain quick turnaround projects or for proof of concept before designing a PCB. Most square or rectangular pin headers work well.

[vivid zinc]

can i use the boot button as input button as well on the pico/picoW?

[violet torrent]

no, i do not believe so

[humble thunder]

my old hifi receiver from the 70s has so much wire wrapping in it lol, still works fine to this day so it seems fine for commercial products!

[lean stone]

some old analog telephone switch equipment was built using wire wrap (thicker wire gauge than is typical for DIP sockets)

[rugged elbow]

random off-topic: there is a distinct lack of DLNA renderer software for Windows

[golden hamlet]

anyone know what to call the circular platform here? I have panning and tilting mounting hardware for servos but it would be nice to have a well made and metal larger platform to bolt that onto..... I only find kits that have servos and mounts that are expensive

can't find just these parts that go on the pan servo

if anyone knows please ping me 😦 I am looking a ton but I don't know what term I should be using for this

maybe I could find something similar in a disposed of rotating column fan.....

[pearl frost]

a turntable?

[golden hamlet]

https://tenor.com/view/comedy-waynes-world-you-are-the-master-worship-bow-gif-17398753

I literally was about to buy a shower floor grate

what you just said was exactly what I needed

https://www.amazon.com/FarBoat-5-5inch-Turntable-Aluminum-Rotating/dp/B07Z4MLF1C/ref=sr_1_43?crid=3LUNTWRW8Z2V0&keywords=6"+turntable+metal&sprefix=6+turn+table+metal%2Caps%2C76&sr=8-43

"turn table bearing"

I wonder if there is weight limits with this... I appreciate it a ton though ❤️

[regal horizon]

my magtag is now on day 15 with a 2500mah battery. when they say it's super low power they weren't kidding.

[outer brook]

Yeah it's pretty near

Neat

[pine igloo]

nice. 15 days no slouch.

0.117 milliampere-minutes * 60 min * 24 hours * 15 days

Basically 7/2500 capacity per hour.

(1/357) "three hundred and fifty hours runtime"

[drifting ice]

Can't believe I am saying this, but I am running Windows 10 on Linux with QEMU/virt-manager, with a Core i3-2120 and 8 GB's of RAM.

Albeit after a mass-debloat, but even though I'm not done yet, the results are already speaking for themselves.

[I win.]

[icy moth]

https://tenor.com/view/winner-i-win-emperors-new-groove-yzma-cat-gif-17225957

[drifting ice]

This is exactly me rn. XD

You nailed that!

[icy moth]

I see the words “I win” and my mind is consumed by Izma lol

[drifting ice]

...and just like Izma, I got smacked in the face by Krunk as soon as I said that.

Everything seized up.

[icy moth]

Lol

[drifting ice]

Starting to be really thankful that this PC case comes with a reset button.

Best guess as to what happened: RAM and SWAP both got maxed.

definitely a first.

[icy moth]

You’re definitely doing a lot with just an i3 and 8GB of Ram lol

[drifting ice]

You're telling me, and yep! 🤣

[sorry for the excessive pings]

[astral lily]

2nd-gen, at that! Was barely enough for me to run Kali

[icy moth]

Lol yeah

[astral lily]

I see "lzma" and my mind jumps to the compression algorithm

[icy moth]

I feel like my computer runs okay on windows 10 and I have 48GB of RAM and a Ryzen 5600X lol

But that’s because well… windows 10 is just not amazing at allocating resources

But windows is practically necessary these days.. I daily drive a mid 2017 MBP with an i5 and 8GB of RAM. I have abused this thing and it’s still a champ

[astral lily]

I have trouble getting modern desktop Linux to be happy on that little RAM, too

[icy moth]

So much to the point that my wife uses the M1 MBP my brother got me last year for my birthday haha..

The M1 was great but I was too lazy to reinstall all my tool chains and dev environments on it..

[drifting ice]

oop, sorry.

language. facepalm

[icy moth]

Gets the best of us

[astral lily]

I use Windows for work and gaming, but the rest of my daily stuff is all Linux. When 90% of what I do is in a web browser anyway, and the other 10% is SSH/NFS/tinkering/scripting... it just makes sense

[drifting ice]

Ironically, I don't like using Windows at all.

and when I need it, it is a nightmare to work with.

[icy moth]

One job I had, I used windows to remote into an enterprise windows machine that I ssh’d into a Linux box lol..

[astral lily]

Oh $dayjob is mostly Windows. They let me have WSL which is nice though

[drifting ice]

Heheh, Void Linux over here.

[icy moth]

We had Linux build servers to ssh into from windows so I did that

[astral lily]

Which is so much easier than it used to be, since they include an SSH client now

[drifting ice]

Next challenge: USB device redirection.

but not right now, holy !@#$.

[regal horizon]

@pine igloo magtag say it does 250ua in deep sleep. it wakes up once a day only for a few minutes, pulls the latest weather info, displays on e-ink, then goes right back to deep sleep. apparently it can last for weeks on a 350mah battery. i didn't really believe it and got a 2500mah battery. it's already exceeded my expectation, it might run for months?

[drifting ice]

Never underestimate the DZ68DB. 😉

[pine igloo]

Well just let it run out to low battery and you'll have an idea.

[regal horizon]

i didn't disable the onboard pixel light when it's on battery, could probably save a little power there too.

little green led is always on, it's tiny tiny tho.

that's what i've been doing but it just...keeps...going

[pine igloo]

You can desolder it if you got the tools and skills.

[vivid zinc]

Somebody managed to use WPS instead of SSID and Password to connect to WiFi?

[icy moth]

Yeah, WPS is a pretty well known security vulnerability

[vivid zinc]

i have no clue how to use it in micropython 😦

[icy moth]

There’s a lot of great tutorials for that

Circuitpython might be a little easier to get started with though 🙂

It’s based on MicroPython but has a strong emphasis on being very beginner friendly and capable of scaling with you as you learn more 🙂

[vivid zinc]

i just moved to micropython because it was easier for me to manage wifi connection with the Pico W

but i guess i will just look into it again, i thought it's not even possible out of the box yet to use pico w's wifi in CP

[icy moth]

Oh the Pico W

Yeah, MicroPython is probably better for that right now at least

[vivid zinc]

well, i did not even really tried in CP so far, only saw people saying it might not even be possible atm. I'll get into it after i got some sleep.
I even feel too tired to properly google micropython wps wifi connection examples, or threads covering the topic 😄 Thanks so far, it seems to be possible at least

[icy moth]

I think it’s still very much WIP for circuitpython

[vivid zinc]

I hope it will get some update soon™️
The pico w hyped me to get into microcontroller stuff again, even tho there are 1000's of others having WiFi, but idk when RaspberryPi foundation does this, with their own chip, you feel like you need that 😄

So here i am again, messing with code, way too high for me

[icy moth]

Hahaha.. they certainly inspire to do what once felt impossible

[vivid zinc]

The old guys from NASA be like: Why do they have so much space to waste?

found that pic when the pi zero was new ^^

58 years in between

i think i instead make an AP, let the user enter the credentials, then close the AP and connect with the data given

oh wait, this will end up being as insecure as using/doing WPS

[pearl frost]

its very painful to think about the resource wastage in a lot of modern programs

now if you'll excuse me I have some python to write

a language that runs conservatively 50x slower than nearly everything else

[pine igloo]

https://github.com/raspberrypi/pico-sdk

[icy moth]

The Pico examples repo is a little bit better. But #help-with-projects would probably be the closest channel for asking

[naive rain]

Does Adafruit sell any SPST switches?

Like an SPST version of https://adafruit.com/product/805

[violet torrent]

Just search SPST, it's the first thing that comes up

oh wait

sorry

That's the one that comes up

you can use a SPDT switch as a SPST switch, iirc

[naive rain]

Yeah it will work , it'll just have either two ons or two offs

[violet torrent]

You can just not use one of the pins

just have it floating

[naive rain]

Yeah that's what I'll do; it will have two off settings

[hearty karma]

I don't think it has a center position, just two, so one would be on and the other would be off.

[naive rain]

That switch is SPDT, so it's made to be used with two different on settings

Center is off

[lean stone]

wouldn't that be more like SP3T? or at least the center-off position would be explicitly noted?

(the 3-position ones i've seen are usually baton or lever style, not slide style, though there actually is one right next to me, oddly enough)

[naive rain]

Oh, maybe it doesn't have a center

Yeah, you're right.

[violet torrent]

SPDT are usually ON-ON

instead of ON-OFF-ON

[golden hamlet]

do you all think I could squeeze out enough from a esp32s camera module to both stream video and control 2 servos? I am debating moving from the esp32 I have now doing this task to the cam module or I could swap off to a pi zero w, I already have both options but I want to avoid working double....

I think I may be able to use the esp32s cam module but I am worried about the video streaming computational strain in tandem with operating the two servos

I know they get pretty hot when just normally streaming video

nature of my project.... I would rather use the esp32s cam because it is easier to lockdown from exploits and cheaper and easier to get.... zero W I honestly don't even know how long a wait to get one would be

[pearl frost]

the pie chart of your cpu usage would look roughly like this:
99% camera
1% other stuff

this will be true regardless of controller board really

Images are just so big compared to nearly any other form of data

[thorny cedar]

Hey im trying to send dht22 sensor data from my esp32 with micropython firmware to an influx database i have locally hosted on another machine using http

but i have no idea how to do it, and everywhere i've looked doesnt mention doing anything like this

its only get requests on micropython

does anyone have any ideas? Hope this is the right channel, didnt think any of the others fit for what my issue is

[pearl frost]

you're looking for POST probably

[thorny cedar]

hmm

https://forum.micropython.org/viewtopic.php?t=5496

like this?

[pearl frost]

Broadly you can apply examples that use regular python requests to urequests and micropython

There are a number of important distinction

But the API is very similar

[thorny cedar]

i see

[violet torrent]

Guh choosing a DC converter is difficult

[regal horizon]

good to know what voltage and amperage you want it to run at then drill down the results from there.

[violet torrent]

That's the issue D:

[regal horizon]

then that would be a hard problem 🙂

need help selecting one?

most adafruit boards can accept up to 6v and output 3.3v, there are some exceptions like older arduinos that can output 5v or some board with buck/boost features. depends on what you're trying to do.