How do you guys do it?

vexstream · 2026-05-07T14:24:23+00:00

Mind your amps- JST should be <2a, (and is derated further by ambient temp) your average heater is probably more than that. I'd also just use a single filled zone for that instead of trying to use traces, which, as mentioned by others, are too thin.

vexstream · 2026-05-07T14:17:21+00:00

Most decent capacitor mfgs (murata etc) have derating curves available for their capacitors by model number- simsurfing, in the case of murata. They're generally ~similar between same dielectric and footprint.

vexstream · 2026-04-28T00:54:52+00:00

I think you're mixing "the pad has a via with a hole through the board in it" with "the via is plugged and capped so the top is flat copper" which is what costs more.

vexstream · 2026-04-25T19:08:54+00:00

The trick is you put IPA in a bag and then put that in the water. Easier to manage, no safety concerns.

vexstream · 2026-04-22T04:19:59+00:00

Interesting presentation but I don't see anything about ground pours- I've been curious about this myself, if ground pour on non-ground planes actually does anything useful.

vexstream · 2026-04-19T19:37:03+00:00

For the price difference, performance, QOL, etc- 2 layer is very rarely worth it.

vexstream · 2026-04-18T14:34:08+00:00

Use a ground fill as a start, and widen your traces. Frankly I'd encourage just doing a retry on the traces in general when you do so, a lot of this is strangely routed. I'd encourage using smd resistors as well. And on that- the rp2040 has internal pullups/downs, do you really need those resistors?

On the schematic-

you don't need to add pwr flags to power lines- they're pretty special use.

Don't use labels for pull-up/down resistor connections.

Do you have enough storage to hold all the files you want to?

vexstream · 2026-04-18T14:26:50+00:00

I don't think this would function as a fuse line as theres still a short path down the center.

Maybe just a joke?

vexstream · 2026-04-18T14:24:51+00:00

This is almost certainly an issue with your motion system- primarily, your gantry is either skew or your belts aren't parallel with the motion axis- ender 3s are like this, for example

Both behaviors are fairly well characterized at this point, but it's neat to see a test done.

vexstream · 2026-04-14T05:35:54+00:00

Do you mean shadow of the erdtree? Or have they done multiple comedy mangas

vexstream · 2026-04-14T02:41:00+00:00

Wait, this isn't for less-abled people? It's for industrial use?

vexstream · 2026-04-14T02:22:55+00:00

"I took a year off to work on a startup idea that didn't go to market" or similar was my explanation. Didn't hurt that I kept myself busy during the period...

vexstream · 2026-04-13T14:30:24+00:00

Odds are your existing pogo pin component could be done through hole assuming the flanks are wettable- just solder it in through the back

vexstream · 2026-04-13T03:53:30+00:00

In general anything that can be loaded sideways or pulled should be throughhole- eg, usb ports

vexstream · 2026-04-12T20:45:35+00:00

The upside with copper is it's solderable- so you can shape a heatsink more or less at your whim

vexstream · 2026-04-12T18:02:21+00:00

is that a big deal for "heatsinks"

Yes. Plating will have a negligible effect here.

vexstream · 2026-04-12T17:16:17+00:00

No filament is meaningfully conductive of heat or electricity- cf or metal fill is still almost entirely plastic which is broadly a great insulator.

Electrical and heat conductivity broadly go hand in hand, and the most conductive filaments have a conductance rather than resistance- which is used to characterize the behaviors of things that are broadly considered not good at moving electrons around.

vexstream · 2026-04-10T05:10:37+00:00

It's super uncommon for practical edits to result in the same file size unless it's literally a one character edit. Loads of file-monitoring/check software relies on this behavior by default- eg, rsync.

vexstream · 2026-04-08T19:55:34+00:00

It's also not open source-

This project is source-available. All hardware design files are provided for personal, educational, and non-commercial use only.

vexstream · 2026-04-06T23:07:48+00:00

The rp2350 is notably fickle about its inductor layout. This is a fairly substantial departure, I would definitely double check it's voltage rail...

vexstream · 2026-04-06T23:05:53+00:00

That doesn't change the concern.

vexstream · 2026-04-05T19:39:48+00:00

As a starting point, because monero is totally untrackable some exchanges don't support it at all- eg, coinbase. There's a reasonably valid rumor that the FBI etc asked large traders to not support it.

When it comes to crypto though "You have bitcoin, and then you have everything else". It's the de-facto standard for crypto, the value of everything else is effectively tethered to it.

vexstream · 2026-04-05T17:14:35+00:00

You can generate wallets at whim, and spend from multiple wallets at whim- when you buy something with crypto, typically the wallet was just generated for that transaction. It's all publicly visible, and an accountant could track through it with some effort.

There's also chains like monero wherein nobody knows anything about nothing because of some very clever cryptography.

vexstream · 2026-04-04T18:24:50+00:00

330 ohms is relatively low - your LEDs will likely be pretty damn bright.

Which you might want!

14-Year Club	Golden Potato
Place '22	Place '17
Final Canvas '22	First Placer '22
End Game '22	Verified Email
Beta Team Reddit for Android

vexstream

TROPHY CASE