I was just typing out my reply, but yours is much more detailed anyway, @OP this is the correct solution.

I’m in no position to discourage you from building this, but this is a fsr greater project than you’re writing it to be. Send me a link to the git repo, so I can tag along and keep updated!

Thanks for the detailed answer, that helps a lot for my understanding.

The project sounds like a lot of work, especially for such a niche application. Do you have a crowd to support this (with time or money) or do you plan pay for this and sell it in the end?

It somehow feels like you put a lot of thought into this already and missed starting from the beginning in this post.

What device do you want to have a USB-C DAC for? What’s the actual size limitations and what power do you want to draw that would need a heatsink? Do you have specs in mind, or is there a comparable project already available to look at?

Totally true.

This cable tester is made to help with the issue of bad kr wrongly labelled cables: https://caberqu.com/content/8-ble-caberqu

Sure thing, if that’s allowed: 8volt.at

We’re doing custom builds for research as well as exhibitions and develop new machines and parts for industry ;)

I did that for almost 15 years, now I’m running a company developing embedded electronics using them daily.

I honestly consider them to be a consumable.

The ones I’ve used always get splashes of solder, flux and other uncleanable things onto them at some point. If it gets too much, I’ll switch to a new one.

That’s actually a great video, no-ideal opamp characteristics have caused me a lot of headaches on multiple occasions in the past.

A regular USB-C hub would be an idea, but may not work with regular chargers…

Then this is not safe.

The maximum charge voltage for a lithium cell is 4.2V while USB will provide 5V. It may work for a while, it may fail in a safe state or something gets hot and burns.

Pretty much this, thanks for the summary

I have one of those, it may pass as the great grandfather ;)

They actually renamed the types which makes everything even more confusing

Yeah, unfortunately fast data and fast charging are two independent characteristics…

The thing is from Austria though?

To add to that, it also measures Vbus resistance as well as a continuity and short circuit test on all pins. This sorts out all problems with broken or overspeced cables.

Pretty much. I’m not even sure if regular USB ports can talk to pins individually, let alone test them for shorts.

Interesting, I just uploaded the .mp4 directly to lemmy and assumed this to be working. How else would you share a gif/short video?

Not sure what else, but the thing can tell you if a cable is USB2.0, USB3.0/3.1/… or just for charging.