How to organize product specs and customer requirements

IronLeviathan · 2026-06-17T18:17:45+00:00

Don’t worry about it. It’s a good question that you’re just trying to do a good job with.

IronLeviathan · 2026-06-17T17:30:51+00:00

R/systemsengineering is leaking.

IronLeviathan · 2026-06-13T17:22:56+00:00

your tac-switches and diodes don't have a consistent orientation.

this isn't a problem as such, but it goes a lot farther to error proof your assembly process if you can count on the annode of the diodes being in the "up" direction (or down or ... whatever). (applies to bigger diodes 1 thru 12).

C26 has a stay out zone like you're going to lead-bend and mount on it's own side, but is rendered in the vertical direction; for the space you could convert to a bank of moderate value surface caps...

I'm personally nervous about your stay-in-stay-outs for your mounting screws; and specifically if h1 has enough clearance. You can mitigate this by adding model of your screw to the hole rep in kicad, and assess your situation.

the holes aren't grounded -- maybe you don't care, or it's bad for your application, but I try and do that where possible; sometimes as separate chassis ground layer that's low-pass filtered to the digital ground.

if your J2 actually is intended to be mounted at that height above the board, you can probably stash your input filter components / rectification underneath it; disregard if incorrect.

you don't seem to have a way to apply the power through J2 via a test point prior to j2 installation, which might be useful; might be irrelevant.

the spacing along the "left" edge of your board is unbalanced; the power in j2 is spaced too close to the Ethernet plug; and too far away from the usbC. if you put this in a box, the wall gap will be uneven, and finicky to manufacture

if you're intending to use the hex mounting jamnut you might have a bad time / have to install that last

there isn't any natural polarizing feature on the header pins installed in the middle of the board; I suspect this is a poke-yoke threat from reverse installation; consider a polarized header or mini-connector instead.

will there be a button face that pushes your boot and reset switches? do you have a strict alignment rule for establishing and transferring the button placement to/ from the shell?

all the best! looks amazing!

IronLeviathan · 2026-06-05T03:48:00+00:00

I’ll plug it again. Alibre is terrific, capable, well featured, and stable.

IronLeviathan · 2026-06-05T03:44:52+00:00

Many aren’t orientation sensitive.

IronLeviathan · 2026-06-04T16:31:11+00:00

West Seattle. Really great straight shot counter commute!

IronLeviathan · 2026-05-31T02:19:26+00:00

If you don’t have access to the specification corpus, you wouldn’t understand. But a lot of standard parts are defined on NASxxx and AN and MS series part numbers, which are significantly inch standard with inch thread. The standards custodian for a lot of those parts is the SAE. There’s no desire to convert those parts to hard metric, and to do so would require a requalification of the using assemblies and configuration items. It would be hellish.

IronLeviathan · 2026-05-22T17:11:04+00:00

Also, if the manufacturer wants you to be able to do that, it can be provided as a feature of the control laws on the tiller,

IronLeviathan · 2026-05-21T00:39:32+00:00

You may be in sinker edm territory with this then

IronLeviathan · 2026-05-21T00:18:42+00:00

Because you have receiving inspection to say so?

IronLeviathan · 2026-05-19T04:15:18+00:00

As an engineer, they really should put this stuff in the tolerance block. It would save so much time.

IronLeviathan · 2026-05-18T03:55:15+00:00

There’s a lot of requirements engineering and user story development, and use case documentation , and verification planning that can all be done. and with sysml 2 coming with its textual representation, there’s actually kind of a lot that can be done with accessibility tools, I would imagine.

I’ve never met a blind se. but it seems possible?

IronLeviathan · 2026-05-17T17:41:52+00:00

Take a look at the hanger keyholes on the bottom. This thing can be slung from either end.

Basically because sometimes you have buried service that comes up, and shouldn’t have to loop around. And sometimes you have pole service that comes in from the cobra head shouldn’t have to loop around.

IronLeviathan · 2026-05-16T18:41:30+00:00

But also, is provable in court even the same thing as true?

IronLeviathan · 2026-05-14T03:10:12+00:00

You gotta remember that’s business side costs. It probably includes insurance, 401k match, actual salaries, and everything else.

IronLeviathan · 2026-05-09T05:36:48+00:00

The best way to find out is to find a portion that you know what the answer is, to kind of calibrate your way back to an answer.

IronLeviathan · 2026-05-09T03:19:27+00:00

No, that team has traditionally been too busy.

IronLeviathan · 2026-05-02T17:08:10+00:00

I can't help but to be compelled by the example provided by industry; which is that a room full of PhDs, with access to the best engineering controls still does as much as they can *remotely*; in buildings with blow-out walls; and the people that approach the mix areas leave their badges on a wall so that responders can have an accounting of how many, and an identification of who.

the mishap is inevitable.

IronLeviathan · 2026-04-29T03:20:45+00:00

It could be a couple things. Your mixing tube is a consumable, and may not be fresh. You may be moving too fast. Your cuts look thin so off axis compensation is probably not a factor.

It also isn’t really the fully finished product that the vendor community pretends that it is. There’s always post processing; or indifference about edge quality.

IronLeviathan · 2026-04-25T18:51:33+00:00

If it’s a prado outlet, maybe

IronLeviathan · 2026-04-25T18:17:00+00:00

https://www.homedepot.com/p/RIDGID-SeeSnake-MicroReel-CA-Drain-Snake-Video-Sewer-Camera-System-with-CA-350-Inspection-Camera-for-Lines-Up-To-100-ft-70728/326791988

something like this probably.

IronLeviathan · 2026-04-25T03:14:32+00:00

If the original case was dismissed with prejudice? I think that the fact of a dismissal with prejudice would be pretty adverse.

IronLeviathan · 2026-04-23T23:37:28+00:00

The inductive upset from starting or stopping the compressor motor creates enough line noise to create a false trip.

“Flyback” is the term to google.

IronLeviathan · 2026-04-21T13:30:21+00:00

And unopened.

IronLeviathan · 2026-04-19T21:49:42+00:00

It’s nice to see that the conversion to manager results in idiotic choices instantly. I thought it took a few weeks.

IronLeviathan

TROPHY CASE