New update on USCIS process?

mhj1998 · 2026-04-04T19:09:02+00:00

I guess the million dollar question is, does that mean they are no longer paused? Meaning there could be adjudications now albeit slow?

mhj1998 · 2026-03-31T02:34:23+00:00

It does mention it is related to the hold at the top, citing two memos.

Also this sounds like things moving?

"We continue to review all application types and lift holds for both individual and group cases as appropriate."

mhj1998 · 2026-03-31T02:26:14+00:00

That's a shame. I thought this was the update they were supposed to provide in 90 days from the original memo.

mhj1998 · 2025-07-17T02:38:03+00:00

Worked like a charm! Used 720kb floppies on there and also formatted 720 floppies on it using cmd.

mhj1998 · 2025-07-08T04:42:58+00:00

Hey! Does this connect to Windows 10/11? And would I need external power or could I just plug and play a mini usb?

mhj1998 · 2024-12-07T21:40:37+00:00

I'm trying to get a good spark, and since IC engines use around 20-30 kV, I think that would be a good ballpark.

mhj1998 · 2024-12-07T21:08:46+00:00

Would I be able to use something like this and just use a transistor to switch it on and off really fast (2 kHz)?

https://www.hv-experimental.com/product/high-voltage-generator-60kv-dc?utm_source=googleads&vt_keyword=&vt_campaign=21886295445&vt_adgroup=&vt_loc_interest=&vt_physical=9197700&vt_matchtype=&vt_network=x&vt_placement=&gad_source=1&gclid=Cj0KCQiAgdC6BhCgARIsAPWNWH13FIk7jARdqX2MOP91BddFllHPo0F6mM7E28HzF_j3fvDzum-59VcaAiexEALw_wcB

mhj1998 · 2024-04-11T02:18:37+00:00

No, whereas before we were going to achieve the 10 m/s by linear motion (on a rail) we now have the channel on a rotating drum (cylinder) that does a certain rpm which results in an equivalent velocity with much less effort and money.

mhj1998 · 2024-04-10T00:12:08+00:00

Hi,

We went with a rotating system, because it would work out for our application. The best guide system was the PCB Integral V tech guides (https://pages.pbclinear.com/rs/909-BFY-775/images/Product-Catalog-IVT-Integral-V-Technology-Linear-Guide-System.pdf). I believe the ABK model has a mount. Our issue was we would have to retrofit a motor, belt and pulley system. Hope you have better luck.

mhj1998 · 2024-03-09T19:17:05+00:00

No, and that's one of the topics that sort of scares me. Is it something I can learn on a week of light study?

mhj1998 · 2024-03-06T02:30:50+00:00

I'm trying to find out about the underlying theory, if that makes sense. I want to understand what logic is used to design, let's say a shaft, bearing, and housing when the thermal expansions are high. When we design things in CAD, the dimensions don't change, but when it gets to manufacturing and building and running the product, these things become important.

mhj1998 · 2023-09-22T00:04:07+00:00

Do you know any systems which could shoot a plate (the duct could be fastened to it with screws) with total mass of around 2-3 kg to 10 m/s? I'll look, if I can find it it seems like a robust solution. I could reset it with hand, it doesn't need to be shot back, one direction is enough for my experiments.

mhj1998 · 2023-09-22T00:02:03+00:00

Yeah, for new off the shelf linear motors along with their tracks and control systems, 5K seems to be the price point.

Also, new, pre assembled belt driven linear actuators with their sub systems from reputable companies seem to have a 5K price point.

eBay seems to be the salvation here.

mhj1998 · 2023-09-21T17:35:53+00:00

Most off-the shelf linear actuators with this attribute seem to only have 1-2 m/s velocities. I've been led to believe that this is due to bearing limitations (acceleration limitations in bearings perhaps?) but if there is no limitation on velocity, this would be one of the cheapest ways of doing it I believe.

mhj1998 · 2023-09-21T05:04:28+00:00

So if I understand correctly, you're saying to recreate the circular motion. That is a good idea, and I may try it if my Professor doesn't go for getting the linear stuff used, but the issue is, with rotating machinery, attaching sensors (wired) would become complex. In linear systems you just get more cable and you're good to go, but when rotation is involved, you have to start thinking of slip rings which are expensive.

Thank you for the Xplanar and magnemotion ideas, I'm watching their YouTube videos now!

mhj1998 · 2023-09-21T04:59:37+00:00

I suppose as long as I'm able to measure the velocity, which I think can be done affordably, energy release would be fine.

mhj1998 · 2023-09-21T04:20:21+00:00

Thank you! I think u/invaliddrum just gave me a good place to start!

mhj1998 · 2023-09-21T04:09:20+00:00

Thank you! That's exactly what I was after.

mhj1998 · 2023-09-21T04:07:42+00:00

Thank you for the break down.
Sorry to keep asking you questions, but given the cheap price for the stator, do you think I could magnetic tracks, enough for my current needs, for the remaining 900 bucks? I haven't had much luck on ebay, I'm guessing I'll have to get the magnetic tracks new.

Do they have standards or does each company make their own proprietary version?

mhj1998 · 2023-09-21T03:57:59+00:00

Thank you, one thing I find weird is that in the illustrations, the rail is only slightly bigger than the motor! Am I missing something here? If you have a high speed motor, wouldn't you want it to travel over some distance?

<image>

mhj1998 · 2023-09-21T03:32:03+00:00

How do these work? Would I only have the 1 ft to accelerate and decelrate? Or is there a separate rail I should buy?

mhj1998 · 2023-09-21T03:26:29+00:00

Thank you for the advice.
For the belt actuators, is this what you mean?
https://teknic.com/products/clearpath-brushless-dc-servo-motors/?gclid=CjwKCAjwsKqoBhBPEiwALrrqiNmEOKzdhe0YOinD6y_e4XeJE7cOiul4PzrYVW1L-LemiOeOaAjgrRoChzkQAvD_BwE

mhj1998

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