[arm-allstar] the state of multiple fobs on Raspberry Pi 4

[David McGough]

BTW, more info about older RPi4B boards.  This week I needed to setup a
temporary RAID1 array, using two 4TB SSD drives.  I attached these drives
to a rev 1.1 RPi4B using USB3 to SATA cables and immediately encountered
this same "multiple device" hardware bug.  Trying to work around this, I
pulled an Amazon USB3 4-port hub off the shelf and plugged both drives
into the hub and the hub into the RPi4B.  This works fine!!  Note that I'm 
not supplying external power to the hub, either, even though this model 
supports external power.  Here is the hub I'm using:

https://www.amazon.com/gp/product/B00DQFGH80


I'm powering the RPi4B, with all the accessories attached (USB3 hub and
two Samsung 870 4TB SSD, connected by USB3/SATA), using a 5V3A DC-DC
converter.  I did place a heatsink on the DC-DC board.  It's completely 
stable, so far!  (Performing a RAID re-sync right now).

https://www.ebay.com/itm/223524573272


73, David K4FXC


On Tue, 4 Oct 2022, "David McGough via ARM-allstar" wrote:

> 
> Patrick,
> 
> Yes, the rev 1.5 boards should work with multiple fobs.
> 
> 73, David K4FXC
> 
> 
> On Sun, 2 Oct 2022, "Patrick Perdue via ARM-allstar" wrote:
> 
> > Hi:
> > 
> > I finally managed to get a Raspberry Pi 4 rev 1.5 board after looking 
> > around for months.
> > 
> > Is the issue still present where we can't use multiple CM108/119 sound 
> > fobs on the board?
> > 
> > I can, of course, test this myself, but thought I'd ask before building 
> > a configuration only to find that it doesn't work as expected.
> > 
> > I have a weird problem with randomly garbled RX audio across both of my 
> > connected fobs on a Raspberry Pi 3 that I've had in service for a long 
> > time. I've tried all the usual things -- fresh image, new power supply, 
> > etc. Don't know if this is a hardware or software problem, so thought 
> > maybe I'd try this setup with a Pi 4 if that problem has been fixed by now.
> > 
> > Thanks and 73
> > 
> > N2DYI
> > 
> > _______________________________________________
> > 
> > ARM-allstar mailing list
> > ARM-allstar at hamvoip.org
> > http://lists.hamvoip.org/cgi-bin/mailman/listinfo/arm-allstar
> > 
> > Visit the BBB and RPi2/3/4 web page - http://hamvoip.org
> > 
> 
> _______________________________________________
> 
> ARM-allstar mailing list
> ARM-allstar at hamvoip.org
> http://lists.hamvoip.org/cgi-bin/mailman/listinfo/arm-allstar
> 
> Visit the BBB and RPi2/3/4 web page - http://hamvoip.org
>