Thanks again.
I am sensing all the three sensors available i.e. temperature , light
and humidity. I use the following formulas ,
temperature = (float)(-39.6 + 0.01*(float)val);
humidity = (float)(-2.0468 + 0.0367*(float)val + 0.0159*(float)(val*val));
but when I use MsgReader tool to read
Hi all,
I am sending sensor readings from telosb mote to the pc and storing
the data in mysql database. The problem I am facing is that I want
data to be precise upto at least 2 decimal places but data in my
database always comes out to be as integer. I have modified the mig
generated file to
Pretty much all sensors readings on TOS devices are
integer values directly from the ADC -- some few, like
Voltage, may be may be mangled for range and level
but are probably also ints. IIRC the telosb has a 12
bit converter so you should have 0-4095 as your values,
which is a resolution of about
Thanks for the help Michael. But again I am not really sure how to do that.
Can you refer me to some tutorial or reading where I can see how to
actually code it.. Sorry but not really getting it.
Regards,
Mayank
On Fri, Jun 10, 2011 at 5:13 PM, Michael Schippling sc...@santafe.edu wrote:
Pretty
Assuming that the readings you are getting are,
as I suggested, the raw ADC values from 0-4095
you can convert them to a voltage by multiplying
by the ADC's reference voltage -- nominally 3.3v.
So a 0 value is equal to 0 volts and a full scale
4095 value is equal to 3.3v. The reading you get
is
