RE: Re: SOM1 relay board switching sound.

[ian.bird@xxxxxxx]

My board is pretty dum as it stands, no brains at all. It is designed
to
connect to a micro controller though which can have as many smarts as
you
want. Amar is putting together a list of features he would like, please
feel
free to contribute. I plan to keep the first release simple but the
hardware
will be the same. Changes in spec will be in the removable PIC chip.

It will be connectable by RS485 as this is my favourite bus at the moment.
I
will probably make it 485 only (or maybe dual but either or not both).
I
will then use a serial to 485 converter. That is a way away yet, lets
walk
before we start running.

Ian

Ciba Vision (UK) Ltd
Tel:+44(0)1489 775570
Fax:+44(0)1489 779570
E mail: ian.bird@xxxxxxx

> -----Original Message-----
> From: justin@xxxxxxx [mailto:justin@xxxxxxx]
> Sent: 23 August 2002 15:47
> To: ukha_d@xxxxxxx
> Subject: RE: [ukha_d] Re: SOM1 relay board switching sound.
> 
> 
> Thanks everyone.
> 
> Just to clarify, the CAT5 connection is effectively a 
> headphone extension lead. 
> I was working in the principal that if the ground wire (in 
> this case w/o & w/g 
> connected together) were cut there would be no sound. Using a 
> relay as a switch 
> seemed to make sense. As this does not work as expected, I 
> would imagine the 
> relays aren't the right sort as Ian described.
> 
> Ian,
> 
> I can hear the relays switching over so I assume they are 
> doing what they are 
> supposed to.
> The thing that appealed to me about the SOM1 board was the expansion
> capabilities using RS485. Will yours do that? Either way, I 
> would be very 
> interested.
> 
> BTW, I don't like the way the relays are operated on the 
> SOM1. You have to send 
> the status of all the relays when you want to change just 
> one. I hope your unit 
> wont do that!
> 
> Cheers,
> Justin.
>  
> 
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