Re: Analogue Light Sensor (for Ken Watt)

["psghome2002" <psghome@xxxxxxx>]

Thanks Mike,

Apparently these parts have now been replaced by the R option -
don't know what's different though.

How have you mounted yours and how did you modify the sensitivity
(lens cover or RL resistor between output and ground?) - I presume
the sensor is overloaded in sunlight?

Paul.

--- In ukha_d@y..., Mike Griffiths <mike@a...> wrote:
> Paul
> I've used the Texas TSL range
> They work fine best to get one of each from RS and see which
sensitivity
> suits your application
> As I have said before the hard part is working your schedule to
understand
> that they will react to both natural light and a Lamp being
swithched on
> When the sun is streaming through my windows the lights go off and
come back
> on when it isn't
>
> http://www.csi3.com/HOMEVIS/light_sensor.pdf
> for a link
>
>
> Mike
> At Home
>
>
> -----Original Message-----
> From: psghome2002 [mailto:psghome@xxxxxxx...]
> Sent: 06 February 2002 20:12
> To: ukha_d@y...
> Subject: [ukha_d] Analogue Light Sensor (for Ken Watt)
>
> I've found the spec sheets on these TI sensors that just need a 5v
> supply and give a variable voltage output. There were a few
threads
> on light sensors on the HomeVision list but I havn't found anyone
> yet who's successfully calibrated the output to get sensible data
to
> use in a schedule. I guess a just few bands would be usefull,
maybe
> 5-6 that might indicate dark, twilight, dusk, daylight, overcast,
> etc.
>
> http://www.taosinc.com/products.htm#tsl250r
>
> Anyone using something similar? or have ideas for practical
> application using X10 dimming for example?
>
> Paul.
>
>
>
> For more information: http://www.automatedhome.co.uk
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