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I got almost all of my wishes granted with RP2350

(dmitry.gr)
700 points elipsitz | 5 comments | 08 Aug 24 13:03 UTC | HN request time: 1.025s | source
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nimish ◴[08 Aug 24 17:47 UTC] No.41194268[source]▶
Gross, the dev board uses micro-USB. It's 2024! Otherwise amazing work. Exactly what's needed to compete with the existing giants.
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janice1999 ◴[08 Aug 24 18:48 UTC] No.41194889[source]▶
It saves cost and none of the features of USB-C (speed, power delivery etc) are supported. Makes sense.
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str3wer ◴[08 Aug 24 23:37 UTC] No.41197522[source]▶
the price difference from usb to usb-c is less than 2 cents
replies(2): >>41197710 #>>41200495 #
1. rldjbpin ◴[09 Aug 24 10:31 UTC] No.41200495[source]▶
devil's advocate: cables for an average user is a different story. also not to forget the vast range of cables already existing out there.

also "proper" usb-c support is another can of worms, and maybe sticking to an older standard gives you freedom from all that.

replies(2): >>41200961 #>>41205674 #
2. g15jv2dp ◴[09 Aug 24 11:54 UTC] No.41200961[source]▶
You're confusing USB C and USB 3.1+. USB C is just the physical spec. You can design a cheap device that will only support USB 2 if you just connect ground, Vbus, D+ and D- and gasp add two resistors. It will work just as well as the micro-usb plug.
replies(1): >>41214731 #
3. kmeisthax ◴[09 Aug 24 21:55 UTC] No.41205674[source]▶
A USB-C port that only supports USB2 data and power only needs a few resistors across some pins to trigger legacy modes and disable high current/voltage operation. All the extra bits are the things that jack up the cost.

USB3 and altmodes require extra signal lines and tolerances in the cable.

High-voltage/current requires PD negotiation (over the CC pins AFAIK)

Data and power role swaps require muxes and dual-role controllers.

That's all the stuff that makes USB-C a pain in the ass, and it's all the sort of thing RPi Nanos don't support.

4. rldjbpin ◴[11 Aug 24 08:15 UTC] No.41214731[source]▶
completely valid, but i would like to think the org is still designing for accessibility for newbies in mind.

like you said, the connector does not have to follow the standards. i have seen hdmi ports being used to carry pcie signal (not a good like but here is one such device https://pipci.jeffgeerling.com/cards_adapter/pce164p-no6-ver...) amgon other things. it is still non-standard behaviour.

replies(1): >>41215847 #
5. g15jv2dp ◴[11 Aug 24 13:04 UTC] No.41215847{3}[source]▶
Using an USB C port to carry an USB 2.0 signal is perfectly within the standards.