Re:Why do USB-C hubs still have USB 2.0 ports? (2021)
by jmgao on Tuesday May 10, 2022 @08:07PM
(#31334245)
And the best part is that you don't even need a connector, you can just build it right into your PCB! USB-A also lets you do a PCB-only connector, but if you're doing anything that requires a cable instead of just plugging directly into a port, it's a lot more annoying to require a USB-A extension cable than any USB-C cable.
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Re:Why do USB-C hubs still have USB 2.0 ports? (2021)
by anyfoo on Tuesday May 10, 2022 @08:26PM
(#31334403)
Do you have an example for such a "USB-C edge connector"? Intuitively I would have said that common PCB thickness is too large, or do I misunderstand what you mean?
Re:Why do USB-C hubs still have USB 2.0 ports? (2021)
by jmgao on Tuesday May 10, 2022 @08:34PM
(#31334472)
Yeah, you need a 0.8mm thick PCB, but everyone can do that now (JLCPCB and oshpark both do it for the same price as a regular 1.6mm board). Here's a footprint: https://github.com/jmgao/PCB-USB-C
Re:Why do USB-C hubs still have USB 2.0 ports? (2021)
by LeifCarrotson on Wednesday May 11, 2022 @08:47AM
(#31339163)
You can also do this with thicker PCBs (2.4 or 2mm, nominal 2.235mm, 1.6mm works with a good USB cable or a shim) to form a USB-A male connector, eg:
Re:Why do USB-C hubs still have USB 2.0 ports? (2021)
by Eduard on Tuesday May 10, 2022 @09:13PM
(#31334738)
I need photos to understand this, including one where a cable is connected to it
Re:Why do USB-C hubs still have USB 2.0 ports? (2021)
by shepherdjerred on Tuesday May 10, 2022 @11:47PM
(#31335639)
Wow that’s crazy
Re:Why do USB-C hubs still have USB 2.0 ports? (2021)
by spookthesunset on Wednesday May 11, 2022 @12:53PM
(#31342612)
Very cool!
Re:Why do USB-C hubs still have USB 2.0 ports? (2021)
by h-w on Wednesday May 11, 2022 @12:27AM
(#31335850)
Awesome
Re:Why do USB-C hubs still have USB 2.0 ports? (2021)
by anyfoo on Tuesday May 10, 2022 @08:40PM
(#31334499)
Sweet, I will consider that next time I need something USB-like, thanks!
Re:Why do USB-C hubs still have USB 2.0 ports? (2021)
by nimish on Wednesday May 11, 2022 @12:45AM
(#31335937)
Oh my god this is incredible! And it has the full pinout so you can use debug accessory mode!
Game changing!
Re:Why do USB-C hubs still have USB 2.0 ports? (2021)
by the__alchemist on Tuesday May 10, 2022 @08:35PM
(#31334474)
Re:Why do USB-C hubs still have USB 2.0 ports? (2021)
by anyfoo on Tuesday May 10, 2022 @08:39PM
(#31334496)
That seems to be opposite of what jmgao means, which was forming a USB-C edge connector out of the PCB itself.
Re:Why do USB-C hubs still have USB 2.0 ports? (2021)
by the__alchemist on Tuesday May 10, 2022 @08:43PM
(#31334504)
Oh wow, I misinterpreted. That's awesome!
Re:Why do USB-C hubs still have USB 2.0 ports? (2021)
by grrrrrbox on Tuesday May 10, 2022 @08:23PM
(#31334376)
What PCB thickness? Got a footprint?
Re:Why do USB-C hubs still have USB 2.0 ports? (2021)
by prutschman on Tuesday May 10, 2022 @09:04PM
(#31334668)
The Eagle one yours is based on says it needs 0.6 mm PCB to work. Is it just close enough not to matter?
Re:Why do USB-C hubs still have USB 2.0 ports? (2021)
by jmgao on Tuesday May 10, 2022 @09:29PM
(#31334829)
Annoyingly, the USB-C midplate is specified at 0.7mm. In my experience, 0.6mm boards are too thin to make a reliable connection. Going thicker has worked perfectly with all of the cables I've tried. I suppose there might be some risk of damaging your cables, but it doesn't seem too likely to me (the spec is 0.7 +/- 0.05), and I haven't had any problems.