RE: LED Detector

["Steve B" <steve@xxxxxxx>]

Ian,

Havent taken it any further yet. Its says 1000 imp/KWh. Visually with our
base load it looks to be somewhere between 1 and 2 flashes per sec.

Santa's bringing me a comfort lux module and i then intend to hack the
decomisioned board i am using now as it suffers from having no hysteresis
and trigger point varies too widely with temp. It uses a photodiode & a
relay but if anyone can assist with a circuit to interface to comfort input
that would be great. It also might be preferable to add a divider to reduce
the overhead on comfort and pc to keep track of counts. I am capable of
knocking anything up on vero but help with design would be great.

Steve.

>  -----Original Message-----
> From: 	Ian B [mailto:Ian@xxxxxxx]
> Sent:	12 December 2001 22:06
> To:	ukha_d@xxxxxxx
> Subject:	RE: [ukha_d] LED Detector
>
> Did you solve this Steve or is further thought needed? How many times
a
> second does the LED flash?
>
> Ian B
>
> 	 -----Original Message-----
> 	From: 	Steve Morgan [mailto:steve@xxxxxxx]  On Behalf Of
> Steve Morgan
> 	Sent:	11 December 2001 17:35
> 	To:	ukha_d@xxxxxxx
> 	Subject:	RE: [ukha_d] LED Detector
>
> 	A simple photodiode or LDR should suffice. You'll just need to make
> sure it's well shielded from ambient light.
>
> 	Steve
>
> 		 -----Original Message-----
> 		From: 	Steve B [mailto:steve@xxxxxxx]
> 		Sent:	11 December 2001 17:32
> 		To:	ukha_d@xxxxxxx
> 		Subject:	RE: [ukha_d] LED Detector
>
> 		Yes. As it flashes 1000 times per KW it would be simple to
> have a real time usage on the pc. I can do the programming and perhaps
use
> a comfort input but need assistance to detect it. Is the type of light
> detectable with an available sensor ?
>
> 		Steve.
>
> 			 -----Original Message-----
> 			From: 	James Hoye [mailto:james.hoye@xxxxxxx]
> 			Sent:	11 December 2001 17:19
> 			To:	ukha_d@xxxxxxx
> 			Subject:	RE: [ukha_d] LED Detector
>
> 			Yeah, great idea but i want to detect it and
> interface to an input. The LED being sealed in a bit of kit which
would
> land me in court if i were to tamper with it.
>
> 			DIY leccy meter monitor.....?
>
> 			James H
>
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