Good afternoon to both of you, Thanks for your answer, I was away for a few days and I'm just seeing it now. About the sensor type, I have no idea my mote is supposed to be a telosb, if I do a motelist the reference is M4AP1122 and the description is Sensilla tmote sky. I don't know what exactly is the type of the sensor, this a light sensor mounted on the telosb node. I am seeing anything changing when I cover the sensor with my finger, that's why I know that there is a problem but I don't know how to fix it, I'm using oscilloscope to send the data to another node equipped with basestation and the value displayed after conversion are around 3900 just like the values I can observe when I run the Java GUI for Oscilloscope. If you have any ideas, they are welcome :) Have a good day
On Fri, Nov 25, 2011 at 12:26 AM, Urs Hunkeler <u...@gmx.ch> wrote: > 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 >> Tinyos-help@millennium.**berkeley.edu<Tinyos-help@millennium.berkeley.edu> >> https://www.millennium.**berkeley.edu/cgi-bin/mailman/** >> listinfo/tinyos-help<https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help> >> > > -- Arthur Baudry ESEO
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