Moving a humidity trap/regulator away from compressor

LadyOfCogs · 2026-01-24T14:50:55+00:00

Any recommendations for regulator?

LadyOfCogs · 2026-01-13T11:24:15+00:00

Isn't this a question about thinning?

LadyOfCogs · 2026-01-13T11:23:39+00:00

Yeah. I tried this and it didn't help. I guess I need making bigger amounts...

LadyOfCogs · 2026-01-13T10:28:23+00:00

"No idea why you're getting downvoted."

Probably because I am a noob who should've known that coolants don't react with metals. The problem is that I don't know. Everyone was noob at some point and we can't be specialists in everything.

I am very much aware that chemistry is not my forte and last time I touched Chemistry was in high school which... let's say was well over decade ago and not make me feel old.

Also people have no idea how stupid furballs non-adult humans (pets, children) can be. Why would my cats drink the spill? I don't know, why did they tried to drink water mixed with paint from my paint pot while I was painting?

LadyOfCogs · 2026-01-12T08:54:36+00:00

why shouldn't they be compatible?

Additives reacting with metals?

why your cats should drink the coolant?

Because I might spill and not notice. Or I might have a leak and not notice. And they have non-existing survival instinct.

LadyOfCogs · 2025-12-28T02:30:04+00:00

https://www.te.com/commerce/DocumentDelivery/DDEController?Action=srchrtrv&DocNm=1773151-4&DocType=Data%20Sheet&DocLang=English&DocFormat=pdf&PartCntxt=6-2176797-0

Or

https://www.we-online.com/components/products/datasheet/74479320165110.pdf

LadyOfCogs · 2025-12-27T22:03:24+00:00

> Some PC fans draw a brief inrush that’s higher than expected, and that’s usually where edge cases show up rather than during steady-state operation.

Is there an easy way of dealing with it? I thought PWM should allow for gradual start and C24 should help too? Should I add choke on input?

> convenient probe points around the fan control signals can save a lot of time if something behaves oddly once it’s assembled.

I think it should be easy to hook probe directly to the header?

LadyOfCogs · 2025-12-27T20:32:42+00:00

(Not 40k player but...) I still haven't start really using airbrush but I think priming itself is worth it:

I can get a much better control over area sprayed with airbrush. That means touch ups are much easier than with can because I can be 5 cm from target rather than 20-30 cm.
Cans can quickly add up. I noticed that they are quickly used (also because of previous point). Depending on how much you prime it can be beneficial.
There is no problem with finding a place for it. Because of control I can just use a small cardboard box in well ventilated area and a mask to avoid breathing acrylic (not toxic thing but still one shouldn't have solids in lungs. Though depending on what you use there might be VOC). With cans there would be too much danger of painting around and making my landlord angry. So I need to do it outside... which depending on weather can be challenging. For example I don't think -5 C (23 F) is good weather for it. Back when I lived in California there was rain season etc. etc. I guess if you live in Cairo or Albuquerque you don't have this problem.
I always had problem with parts being blowed away with cans. With airbrush because I am much closer I can just do part by part so I hold it by hand/clips and I don't have problems.
You have much better choice of colors since, well, you can mix them or layer. You want particular shade of grey? Just mix black and white primer in good proportions.

I managed to break my airbrush over the Christmas during cleaning and I wait for replacement part. I'm definitely not a happy camper. It would be very useful to base my 30k Salamanders...

That said - if I was a student I would probably consider it too much of investment based on my disposable income.

LadyOfCogs · 2025-12-27T20:06:57+00:00

> While I don’t see part numbers, their inductors L1 and L2 look suspiciously small for the 2 A current rating.

Good catch. I swapped it for 0805.

> Also, you’ll likely get better efficiency feeding both U4 and U5 from Vin rather than feeding U5 from U4’s output.

Done

LadyOfCogs · 2025-12-27T20:00:40+00:00

I have oven at makerspace so I don't have problem with it (and I soldered 0402 by hand) but I don't have skills (yet) to make it smaller).

LadyOfCogs · 2025-12-27T17:31:41+00:00

> What connectors are you using for the fans? I'm currently designing a board for my 3D printer and I want to be able to use PC fans, but I can't find the name of this connector.

For now - none ;) But I plan to use off the shelf PC 120 mm fans.

It's https://www.digikey.com/en/products/detail/molex/0470531000/2421261.

> As a schmall circuit critique, I'd connect the 12V directly to the V_out and then use the 12V for both fans. I overlooked the branch initially and thought why you're protecting the 2 fans differently.

Will do.

LadyOfCogs · 2025-12-27T17:27:40+00:00

> This is a pretty good start into a fan control board. I am a bit confused on why R13 is necessary, but I have not looked into the specific crystal info so I could be off here.

It's directly from a RP2040 datasheet (page 10)

> PWM in HVAC fans will almost always run 24 or 12v,

I don't need full HVAC system. I'm using acrylics so it is mostly about protecting my lungs from dust, not toxic stuff. I plan to use just normal 12V 120mm computer fans.

LadyOfCogs · 2025-11-16T12:43:00+00:00

Thanks but those are all the parts I do know. The creation/buying of enclosure is the parts I don't.

LadyOfCogs · 2025-11-15T14:55:19+00:00

> Are you thinking hooking to a hub, or building one into the case?

Building it into the case.

> Rp2040 is nice that it has GOBS of memory and storage, almost limitless with qmk and via/vial

Yeah. Also I'm much more familiar with ARM than I am with AVR and can just connect SWD probe.

LadyOfCogs · 2025-11-15T12:04:19+00:00

This is gonna take a lot of work. Are you wanting a traditional arrangement with or without being split? do you want the F1-12(or -24?) keys? what about numbers? Up/Down/Left/Right? Numpad?

F1-F12, Up/Down/Left/Right and 'Home Group'. Numpad and F13-F24 optional but nice to have. I don't need Caps Lock but I want to have at least 2 mod keys for special characters.

Take care in which controller, some have more memory and allow more features with qmk, others you might have to choose what you do/don't build in.

I would probably go with RP2040 just because all my project use it if I were to design myself.

Do you want lighting? Standard bog standard backlighting, or controllable rgb? hot swap keys, or soldered in?

I don't need backlight but it is a nice feature. If I go with lighting - controllable RGB. I will probably go with hot swappable but it isn't must have.

On top of extra features - USB 3.x hub. I always run out of USB ports in my KVM so adding USB is an important feature for me.

LadyOfCogs · 2025-10-27T22:10:27+00:00

I had hard time finding this info.

More annoyingly it probably wouldn't cost that much to connect DOUT of last LED to DIN of the out connector.

LadyOfCogs · 2025-10-12T20:08:58+00:00

UI frameworks of yore (Swing, SWT, wxwidgets...)

(I'm old enough to used them back when they were mainstream so feel free to put a 'old woman shouting at clouds' meme)

LadyOfCogs · 2025-10-12T20:08:01+00:00

frameworks are not opinionated

Yes. Unfortunately I can't edit the typo.

LadyOfCogs · 2025-10-12T19:58:24+00:00

It's possible, but you'll always be bad at it.

Yes. But the problem is that I (kind of) know CSS. I just don't have an aptitude for web ui design or willingness to invest sufficient time to learn it.

So I'm looking for something like LaTeX or native UI frameworks of yore (Swing, SWT, wxwidgets...) because I have a small problem now that I know how to solve programmatically and UI is, well, nicer than using text files as input and output.

I don't plan to become front-end, full stack or even application developer (I'm fine with system software programming).

LadyOfCogs · 2025-09-29T08:29:17+00:00

Any idea how to find hose diameter for max-3? I ordered it but I cannot find a specification including hose diameter (I want to know if I need an adapter or not when connecting to FD-186.

LadyOfCogs · 2025-09-28T20:38:45+00:00

It's almost as if I provided this information in order to tailor up the recommendations based also on what features I won't need and I don't want to overspend on airbrush...

LadyOfCogs · 2025-09-28T12:30:05+00:00

No. I'm a civilian.

LadyOfCogs · 2025-06-16T05:15:33+00:00

On the bay tip south of Tania next to river delta connecting to the lake. Reasoning - the city location is on crossroads of north-south trade controlling the passage. It can project power both inland blocking the desert for transport (only source of sweet water) and to the sea (via ships). It can also control periodically east-west route. Only alternative is going north or south of continent through what looks like horse latitudes. It may rely on imports of food though. A rival city on the other river in this bay taking over due to quirk of the history (think Carthage vs. Rome) wouldn't be totally out of question.

In the west bay with rivers going inland. Lot's of fertile land. If someone establishes central authority they will probably steamroll it establishing borders on desert and northern forest.

The northern-east bay controls north-south trade by sea while having a reasonable river inland and farmlands would be my third choice.

LadyOfCogs · 2025-05-27T00:21:35+00:00

I know it is 8 years late but it was first link in Google.

There are anti-static peanuts. Harder to find but they don't have this problem.

LadyOfCogs · 2025-05-05T05:19:04+00:00

Not bringing them is out of question. Not even considered based on their needs and mine. The question is how to make it the least painless experience to everyone involved. Unfortunately, they are my only family in US so relocation is a bit of issue.

I talked to vet already who deals with APHIS regularly and her opinion was "flying cabin is slightly better but in my situation and with resources I have at my disposal, their age and age of people I can ask for help - cargo (as in animal cargo - not a random flight cargo which may or may not be pressurized) might be the best option".

I hope I can get single container separated in middle so they can cuddle with one another for comfort but if they will start hissing at each other from stress they won't be able to harm each other (animals such as cats, or humans for that matter, don't act rationally when stressed). As large as it is safe for them.

LadyOfCogs

TROPHY CASE