[kwlug-disc] Raspberry Pi 4

[Mikalai Birukou]

There is a saying: "Many problems have two solutions. One is obvious, 
simple and ... wrong."

Apparently USB-C problem of putting analog circuit is a problem of this 
kind. There is a solution with one resistor instead of two (as article 
mentions) which incorrectness is not obvious (especially with blinding 
"we saved one resistor!"). Nintendo guys stepped into this. Raspberry 
guys stepped into this. And may be even Apple guys did with some of 
their dongles, as commented in Nintendo article 
https://arstechnica.com/gaming/2018/04/nintendo-warns-against-using-substandard-switch-charging-cables/?comments=1&post=35114343 
.

Being on a weekend, I am simply amazed at complexities present in this 
world, and that we, humans, are tackling them nevertheless. Wow!

On 2019-08-03 10:07 a.m., CrankyOldBugger wrote:
> I'm sure that we'll be seeing the Raspi 4 B v2 or something soon.  
> They have good engineers working there.
>
>
> On Sat, 3 Aug 2019 at 10:06, Mikalai Birukou via kwlug-disc 
> <kwlug-disc at kwlug.org <mailto:kwlug-disc at kwlug.org>> wrote:
>
>     This speaks to the power of open design: someone else found a bug
>     and pointed it out.
>
>     On 2019-08-03 12:13 a.m., Khalid Baheyeldin wrote:
>>     Eben Upton confirmed that there are mistakes in implementing the
>>     standard(s) for USB-C.
>>
>>     https://arstechnica.com/gadgets/2019/07/raspberry-pi-4-uses-incorrect-usb-c-design-wont-work-with-some-chargers/
>>
>>     On Sat, Aug 3, 2019 at 12:09 AM CrankyOldBugger
>>     <crankyoldbugger at gmail.com <mailto:crankyoldbugger at gmail.com>> wrote:
>>
>>         You need to watch what USB cables you use with the Raspi 4,
>>         though.  Apparently the RP4 is having problems with smart
>>         cables:
>>         https://www.geeky-gadgets.com/raspberry-pi-4-usb-c-cable-issue-confirmed/
>>
>>
>>         On Fri, 2 Aug 2019 at 20:35, Mikalai Birukou via kwlug-disc
>>         <kwlug-disc at kwlug.org <mailto:kwlug-disc at kwlug.org>> wrote:
>>
>>             Raspberry PI 4 is coming out, with same arm cores as
>>             helm, but with 4GB of RAM. Finally USB 3, and dual HDMI.
>>
>>             https://www.tomshardware.com/reviews/raspberry-pi-4-b,6193.html
>>
>>
>>
>>
>>     _______________________________________________
>>     kwlug-disc mailing list
>>     kwlug-disc at kwlug.org  <mailto:kwlug-disc at kwlug.org>
>>     http://kwlug.org/mailman/listinfo/kwlug-disc_kwlug.org
>     -- 
>     Mikalai Birukou
>     CEO | 3NSoft Inc.
>     _______________________________________________
>     kwlug-disc mailing list
>     kwlug-disc at kwlug.org <mailto:kwlug-disc at kwlug.org>
>     http://kwlug.org/mailman/listinfo/kwlug-disc_kwlug.org
>
>
> _______________________________________________
> kwlug-disc mailing list
> kwlug-disc at kwlug.org
> http://kwlug.org/mailman/listinfo/kwlug-disc_kwlug.org
-- 
Mikalai Birukou
CEO | 3NSoft Inc.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://kwlug.org/pipermail/kwlug-disc_kwlug.org/attachments/20190803/ae7942ac/attachment.htm>