----- Original Message -----
Sent: Saturday, August 24, 2002 1:03
AM
Subject: RE: [ukha_d] Re: SOM1 relay
board switching sound.
Sounds good to me. Can you start putting together
a
wish list of features. I will be using a PIC micro controller and a serial
interface at up to 19200. I might even make the baud rate selectable. Think
about things like the commands you want to send e.g. R1 on, R1 off etc. You
might want an acknowledgement as well. Lots of fun.
I
am trying to keep it simple initially so commands like R1 on for 1 hour
then
xyz will not be in the first release.
Thanks
Ian
Ciba Vision (UK) Ltd
Tel:+44(0)1489 775570
Fax:+44(0)1489 779570
E mail:
ian.bird@xxxxxxx
I would love to be a beta tester,
I have homeseer and volunteer to write a plugin if you like
-----Original Message-----
From:
ian.bird@xxxxxxx
[mailto:ian.bird@xxxxxxx]
Sent: Fri
23/08/2002 14:45
To: ukha_d@xxxxxxx
Cc:
Subject: RE: [ukha_d] Re: SOM1 relay board switching
sound.
Hi Amar
I have ordered the PCB's so assuming no
mistakes on my part boards will be available from about the 9th
September. I am away on hols for a little before that
;-))
Details and pictures are on my site at www.mollyology.com then projects
and relay board. At the moment it is aimed at HV and Comfort users but I
will be putting together a small simple serial interface for it. This
latter bit will make it very similar to the unit you have. You can be my
beta tester if you like ;-))
The relay board is opto isolated as well so
none of that nasty AC stuff going anywhere near your precious PC.
Ian
Ciba Vision (UK) Ltd
Tel:+44(0)1489 775570
Fax:+44(0)1489 779570
E mail:
ian.bird@xxxxxxx
ian can i have details of your board please
-----Original Message-----
From:
ian.bird@xxxxxxx
[mailto:ian.bird@xxxxxxx]
Sent: Fri
23/08/2002 13:31
To: ukha_d@xxxxxxx
Cc:
Subject: RE: [ukha_d] Re: SOM1 relay board
switching sound.
When I was designing my relay board I
initially used reed relays which had some problems with things like
capacitive loads, AC etc. The relays on the SOM1 look very similar
so you may be experiencing similar problems. Check the relays are
actually switching off somehow with the speakers connected and
showing the problems. Alternatively use one of my boards
<grin> which are rated up to 120v AC and everything else you
can think of.
Ian
Ciba Vision (UK) Ltd
Tel:+44(0)1489 775570
Fax:+44(0)1489 779570
E
mail: ian.bird@xxxxxxx
i switched both + and -
-----Original Message-----
From:
PatrickLidstone [mailto:patrickl@xxxxxxx]
Sent: Fri
23/08/2002 13:18
To: ukha_d@xxxxxxx
Cc:
Subject: [ukha_d] Re: SOM1 relay board
switching sound.
Loudspeakers use an AC signal, not DC. There is
no concept of a
common ground, so you can't switch it that
way.
Patrick
--- In ukha_d@y..., "Amar Nagi"
<groups@a...> wrote:
> i think you need to switch
the live
>
>
>
-----Original
Message-----
> From:
justin@g... [mailto:justin@xxxxxxx...]
>
Sent: Fri 23/08/2002
13:06
> To: ukha_d
>
Cc:
>
Subject: [ukha_d] SOM1 relay
board switching sound.
>
>
>
>
I recently purchased a SOM1 relay
board
> (http://www.phaedrusltd.co.uk/system/index.html)
>
I am running 2 sets of speakers
connected to a soundcard over
CAT5 and thought
>
I would try switching using the
relay board (that's not why I
bought it though)
>
>
The wiring uses 4 cores, orange =
left, green = right, w/o &
w/g = ground*.
>
When I switch the ground it just
goes a bit quieter? Any
ideas why this
>
happens? I thought it would just
switch the sound off!
>
>
Cheers,
>
Justin.
>
>
* I think it probably isn't a
great idea to use 2 cores for
ground & 1 each for
>
left/right, but don't know why! I
was thinking
about
shielding.
>
http://www.automatedhome.co.uk
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