Hi, I remember getting values close to 0 (< 50) when it is dark and values just slightly greater than 1000 when it is very bright (without any conversion). If your values don't change much, I think there is a problem with the sensor. You should see a clear drop (50%?) when you cover the light sensor with your finger.
Cheers, Urs On 11/24/11 7:37 PM, Baudry Arthur wrote: > Good afternoon everyone, > > I use a telosb node equipped with a light sensor, I have succeeded in > receiving data from the node on my laptop, but for me the data are > talking non sense because I always get a value next to 4000 (when I > convert the readings to a decimal value) even if it is dark in my place. > Is there a way to treat those data, I know that for example for > temperature data we have to apply a formula to get the real temperature > value. Does anyone know how to interpret the light data ? > Have a good day, regards, > > -- > Arthur Baudry > ESEO > > > > _______________________________________________ > Tinyos-help mailing list > [email protected] > https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help _______________________________________________ Tinyos-help mailing list [email protected] https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help
