On Friday, 6 January 2017 11:54:20 GMT Ralph Corderoy wrote:
> > > The Pi Zero could replace the former and should be up to flinging
> > > SPI data to more than one of them.
> >
> > The problem is that we want the UI to be simple toggle switches on the
> > front of the ammo-box case for the system and the two players need to
> > be interactive, so that they don't try to fight each other
>
> > Doing it in a single device makes that much easier.
>
> The single device would be the Pi, as now, and the UI unchanged. The
> MP3-decoding ICs would replace the USB audio adapters.
Yes. I'm sure that could be done, but I suspect it would need a fair amount
of hardware/software development, plus an additional PSU Brick, as with the
two Pi solution.
> Does the Pi 3 mean no external hub is required? And you've never had
> crashes in that configuration? If so, throwing money at the problem
> sounds easiest, though your `heir and a spare' approach doubles the
> difference.
We would still use the external hub, but only because that is also our power
source for the Pi. I have never seen any crashes with that setup yet.
In reality, with a Pi 3, we would need no external hub if we were prepared to
spend money on a Pi PSU brick or use the spare brick from the Lighting Project
last year.
As I see it, we can currently implement this from the spares pool with no
additional cost but we'd have no spare Pi 3 for either this project or the
Webserver and we'd have an additional two spare Pi Zeros for the Lighting
system.
--
Terry Coles
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