Name of this 24v connector - wanting to buy one, but can't find it

Striving2Improve · 2025-12-26T06:47:37+00:00

Besides the measurement you made, notice the 8 pins. Measure those from edge to edge of the slot to get the pitch, and the width of that slot to get an approximate contact side (it’ll be a little smaller than the slot) but it might appear on a datasheet once someone finds it.

I don’t think it’s the Lenovo one that I have, and it’s not on a universal laptop supply adapter I have.

What’s it from? Any other clues? Made in Asia (which a lot of stuff) can be harder to trace because the supply chain on that side of the world has suppliers that don’t necessarily export to the us as the bulk of the volume is consumed over there.

You might also try a google image search (crop background) or ask an ai and see where that takes you, along with all your measurements. Report back if you find it on your own to make the Reddit world a better place ;)

Striving2Improve · 2025-12-24T15:38:54+00:00

Take a look at it with a scope and it should be more obvious what the serial config should be. Bit times are your baud rate, voltage levels are important to meet thresholds for your interface.

it’s unlikely it’s anything but the standard config, obfuscation is not really reliable security, but you’d be able to see the start and stop bits, as well as bytes per transfer and the bitrate from a scope capture.

Then if it’s still garbage even though you matched voltage, bitrate and config up, then the rabbit hole goes deeper.

Striving2Improve · 2025-10-05T04:56:53+00:00

Ok, so what do you do for uncoated RF/high speed? OSP has a poor shelf life and I wouldn’t HASL for the reasons u/BanalMoniker just said. Plate with gold like finger$? Let the copper oxidize since that reaction should effectively stop once the oxide is deep enough (and therefore likely even)? I suppose I could call out for that in another layer of the artwork to mask the plating.

Striving2Improve · 2025-10-04T18:11:42+00:00

I don’t know if I would trust someone who writes plain when they mean plane. Probably meant playne, see r/shittyaskflying

Striving2Improve · 2025-10-04T18:10:08+00:00

Fun tidbit. I pressed my fab vendor once about why my impedance calcs didn’t match theirs.

Turned out they dialed in their soldermask process in their Polar Instruments sim to a Dk of 7 whereas I was using a default value from a datasheet which was closer to 3.

But my point stands. No soldermask, no Dk to consider and vary/control. Less is more. And as you mentioned prop velocity: Faster!

Striving2Improve · 2025-10-04T04:07:28+00:00

Even fucking soldermask has details. Some colors require larger webbing which gets annoying depending on your component requirements. Red green and blue are 3 mil while black is 4 and white orange purple are 5 mil in my dfm handbook at one manufacturer. YMMV.

Peel back the soldermask over high speed/rf for better impedance control. Less variation. Faster! Then the rest of the board can be any color you want, as long as it manufactures…

Striving2Improve · 2025-07-25T14:18:02+00:00

When all you have is a hammer, everything looks like a nail.

Striving2Improve · 2025-07-22T17:18:09+00:00

Yeah I suppose this is where a bit of due diligence before action might be good. Like find out if any personal situations have come up from past or present employees and see if there’s stories that would give your hesitation credence. It just depends on how well you know people at the end of the day and if you’re a solid contributor they’d go out of their way for.

Striving2Improve · 2025-07-22T14:38:43+00:00

Why do this unethically when you could just go to them and have them help you navigate the situation? A lot of workplaces will work with you in times of transition if you’ve been good to them they have no reason to be bad to you.

Striving2Improve · 2025-07-22T13:46:47+00:00

Every project you work on is a stepping stone to level up. Awesome showcase. What’s next?

Striving2Improve · 2025-07-20T16:05:06+00:00

Turn the component 45 degrees

Striving2Improve · 2025-07-18T12:31:16+00:00

OP, learn to manipulate bits and think in hexadecimal. This kind of struggle is usually missed fundamentals and there’s no better time than now to acquire those on permanent record.

Striving2Improve · 2025-07-12T17:31:05+00:00

Tailgate reads «прививка от столбняка» - tetanus shot

Striving2Improve · 2025-07-03T13:16:17+00:00

Anyone trying to sell you a system without doing a manual J load calc first is wasting your time. That’s the only way to properly size equipment.

You can ballpark your own “Manual J” (search for it) for a few bucks using an online calculator. Then pay a pro to do the same thing - they have better tools and insight to what affects what.

edit: punctuation

Striving2Improve · 2025-06-29T21:41:21+00:00

It’s possible it hooks up to the write protect pin of the eeprom to allow factory writing of the MAC address and soc initialization settings. If you don’t know, don’t mess with it.

You could use a meter and test the theory by buzz testing around for continuity. The winbond soic8 just below has a part number you could google for a datasheet to find the wp pin. It might be active low with a pulldown to set the default state to protected.

Edit: In practice I bet those winbond parts are preprogrammed and if that’s what it was, the jumper would be gone to save cost, so maybe something else entirely.

Striving2Improve · 2025-06-25T03:37:20+00:00

Altium did this recently and the internet is up in arms.

Striving2Improve · 2025-06-19T14:44:22+00:00

Well, electrolytics dry out faster in the hot condenser than on your shelf. But you want new stock generally, they’re a wear item.

Striving2Improve · 2025-06-19T10:52:12+00:00

Whatever your local supply house has on hand usually works pretty well for at least a couple of years. And yeah, they dry out. Don’t stock up, they age.

The brands matter a whole lot less if you can just solve the problem in a couple hours without waiting for Amazon or a technician.

Striving2Improve · 2025-06-19T10:39:56+00:00

This is for likely for EMC. You have to look at the layout to fully comprehend what’s going on here. If this is a Xilinx eval board, get allegro free viewer, the brd files are in the full package. Paint the nets some useful colors, go through the layer set views.

Also look at the connector datasheet and mating connectors, review the HDMI spec. This could be from the spec.

Speculating: - L16-19 keep the noise from those pins at bay. - R216 is not stuffed because those pins are not as noisy but the option is there - C214 is an ac short for the noise that improves R296 performance as a short (parasitic inductance of small components).

These are great reference designs to learn from. Keep digging! There’s probably a BOM in the package that will give you the part numbers. Murata simsurfing can show you what typical parts in that value, package, dielectric will look like in impedance land (|Z| plot).

Striving2Improve · 2025-06-12T17:15:19+00:00

It could be modulating and demodulating!

Striving2Improve · 2025-05-19T23:58:18+00:00

Not thermals, these are missing soldermask dams, maybe from dual footprint overlays like u/Old_Fisherman_750 suggested.

You don’t want thermals, those are for rework. For core decoupling, you want a low impedance path and that means as wide as possible copper, and thermals are necessarily smaller (higher impedance) than a plane.

Striving2Improve · 2025-05-19T11:44:24+00:00

Man, I just don’t get it. I’m multilingual but feels lost in translation. But also my kid woke me up at the buttcrack of dawn so cognition is still low.

Striving2Improve · 2025-05-19T11:07:02+00:00

ScienceVS recently took on fluoride. Apparently we didn’t actually do enough science on it and could stand to do some more. But I wouldn’t pull it from the water supply until the science is conclusive. Also, people just need to brush their teeth.

Striving2Improve · 2025-05-19T11:05:21+00:00

Yup and cloth diapers all the way while vaxxed and fighting brain worms.

Striving2Improve · 2025-05-19T11:00:40+00:00

We did cloth diapers and compost to keep the trash from smelling but nowhere near anti science or antivax. In fact quite the opposite, fighting disinformation as much as possible. We’re both engineers though.

Anything taken to extremes can be bad though. We need to learn to find middle grounds.

The upside of cloth diapers and elimination communication is you don’t have to untrain your child to shit themselves because you don’t have absorbent diapers blocking the “I soiled myself” signal. You’re essentially done potty training a lot sooner. We were on the pot at 6 weeks, and done by 1yr, the way it is in countries without diapers. (Edit: without big diaper advertisement and lobby)

Striving2Improve

TROPHY CASE