RISC PC Powersupply for a car - comp.sys.acorn.hardware

Message from discussion RISC PC Powersupply for a car

Michael Emerton

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More options 22 Feb 2007, 16:55

Newsgroups: comp.sys.acorn.hardware

From: Michael Emerton <MichaelREmer...@hotmail.com>

Date: Thu, 22 Feb 2007 16:55:01 GMT

Local: Thurs 22 Feb 2007 16:55

Subject: Re: RISC PC Powersupply for a car

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<snip>

> Obvious question, but how do you intend to make the device usable (and
> safe) at road speeds? Or is the intention to only control it whilst
> stopped? Having to use a full keyboard whilst driving sounds like a good
> way of ending up dead :(

> Seems to be one of those problems with having lots of music instantly on
> tap within a car: controlling four or five CDs with ten or so tracks each
> is do-able without taking too much concentration away from the driver (as
> they can remember CD order and which track is where) - but it really
> doesn't scale to thousands on songs.

Ah! its called a modified keyboard, (and full one) as a uni project, we
managed to munge a keyboard, into some touch-plates which you could
attach to the steering wheel!

so stuff like Left and Right arrow keys = previous / next tracks,

up/down = volume

and Space as Pause/Start

They attempted to use Windows, but on average by the time they booted it
up, short journeys were over!

Hence RISC OS, oh and the fact I have 3 SAs laying around :@P

The full (wireless) keyboard was for searching / setting up playlists
whilst not moving.

Tis a shame it cannot play video well, as it would also be used for
films for my kid on the way :@)

>> but I need the a PSU for a 12 DC Source?

> Initially a mains inverter may be an option, depending on how much power
> you need. I know Wal-Mart in the US do (or did) a 75W one for something
> like the equivalent of £10. Tesco etc. may offer something similar.
> Perhaps easier than trying to get regulated 12VDC out of something that
> might be anywhere between 11-14VDC and prone to all sorts of spikes.

Any idea of model numbers?

+ is there a wiring diagram of the RPC power input to the MB? I would
love to get this going asap! :@)

Cheers for the advice so far, am looking!

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