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RE: Re: [Development] Lights, an Idea any comments


  • To: <ukha_d@xxxxxxx>
  • Subject: RE: Re: [Development] Lights, an Idea any comments
  • From: "James Hoye" <james.hoye@xxxxxxx>
  • Date: Tue, 12 Jun 2001 10:40:32 +0100
  • Delivered-to: rich@xxxxxxx
  • Delivered-to: mailing list ukha_d@xxxxxxx
  • Mailing-list: list ukha_d@xxxxxxx; contact ukha_d-owner@xxxxxxx
  • Reply-to: ukha_d@xxxxxxx

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> > Any ball-park costs yet based on the triacs, opto-isolators and
PIC
> > required?
>
> Keith's the man for this, but we are talking, opto, triac some caps,
> a coil, fuse holder, protection relay, pcb, perhaps a veriac. I would
> say 10 to 15 quid per channel, with one pic for every 8 channels the
> cnotroler would be about 40 quid including the rabbit, Keith what do
> you think ?

Sounds eminently reasonable to me.  Just need to get approval from SWMBO -
in which case I can only watch and yearn....  One day I shall slip it in by
stealth...

> > My guess is that a Rabbit for each 8-channel controller would be
> the easiest
> > to code for, given the fact that's it's probably faster/more
> powerful than a
> > PIC, and has more memory.  What is the cost overhead of a Rabbit,
> was it
> > US$35 ?
>
> Yep, but we still need the pic its controling the triac's the rabbit
> is doing the high level stuff.

Sorry, that's what I meant - it's easier using 1 Rabbit per 8 channels
(with
PIC for triac firing etc) than trying to make a PIC do the firing and high
level stuff too (with 1 Rabbit controlling multiple lots of 8 channels)

James H




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Automated Home UK
http://www.automatedhome.co.uk
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