this post was submitted on 16 Jan 2024
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448
USB-PD is a de-facto low-power DC voltage standard, with USB-C being the universal plug. Hurray! (hackaday.com)
submitted 8 months ago by [email protected] to c/[email protected]
133 comments fedilink hide all child comments
 

I wanted to share this opinion on Hackaday about a topic that is the usefulness of a something that has become ubiquitous relatively fast.

This techonolgyy has a lot of potential, what do you think?

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[–] [email protected] 11 points 8 months ago (4 children)

Let's not talk about the new Raspberry Pi...

[–] [email protected] 14 points 8 months ago

Plus the Pi Pico is micro USB. I hate them for making that choice.

[–] [email protected] 6 points 8 months ago (1 children)

why not?

[–] [email protected] 21 points 8 months ago (1 children)

It doesn't support PD, and uses an improperly wired USB-C connector.

[–] [email protected] 6 points 8 months ago* (last edited 8 months ago) (1 children)

Do you have any source on that? I planned to get one soon and that's worrying. So far I've found this post after a quick search, which claims PD is supported.

[–] [email protected] 21 points 8 months ago* (last edited 8 months ago) (1 children)

Maybe he's talking about the pi 4, which did have usb-c power issues on its first revision. https://bgr.com/tech/raspberry-pi-4-usb-c-charging-issue-how-to-fix-the-power-problem

Current pi4's and all pi5's don't have that problem.

[–] [email protected] 6 points 8 months ago* (last edited 8 months ago) (1 children)
[–] [email protected] 7 points 8 months ago (1 children)

This article about usb-pd lists 5v 5A as an available option https://www.howtogeek.com/769888/what-is-usb-power-delivery-usb-pd/

USB PD never exceeds 5A of current, but the voltage can be dynamically configured to meet the needs of a device up to the maximum power limit for the standard.

And

When a USB PD charger connects to a device, it performs a "handshake" asking the device how much power it needs. USB PD supports seven voltage levels at 5V, 9V, 15V, 20V, 28V, 36V, and 48V.

[–] [email protected] 3 points 8 months ago

yea, i really rolled my eyes when i saw it was 5v at 5 amps. Seriouly, give us a more sane connection!

[–] [email protected] 1 points 8 months ago

The power situation on RPi has been shit since at least the 3B. I have plenty of powerful enough brand name USB power adapters that give low voltage warnings but work perfectly fine if you ignore it. It is way too sensitive.