[Tinyos-help] About light sensor reading of micaz

[Giri Baleri]

The MTS3xx uses CDSe photocell, which is most sensitive at ~690nm light
wavelength. The MTS4xx however uses Taos digital light sensor with a
operating range of 400-1000nm wavelength and hence more accurate. Hence
the light sensor on MTS3xx is used for measuring bright vs. dark, where
as the light sensor on MTS4xx is used for measuring the actual light
intensity.
 
I hope that helps,
Giri

________________________________

From: tinyos-help-bounces at millennium.berkeley.edu
[mailto:tinyos-help-bounces at millennium.berkeley.edu] On Behalf Of
Mubashsharul Islam Shafique
Sent: Monday, March 24, 2008 6:12 PM
To: tinyos-help at millennium.berkeley.edu
Subject: [Tinyos-help] About light sensor reading of micaz


hi,
I am using MICAz with tos 1.1.10. 
I have started working with MTS400CA just recently. Can anybody tell me
the difference between 'light sensing' of MTS310CA and 'ambient light
sensing' of MTS400CA ? 
 
Another thing, while running 'OscilloscopeRF', i am always getting
sensor reading between 340 to 380. But i expected some high values as
well(due to 16 bit ADC data) when exposed to light source.
 
bye,
shafique 

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