Hi Michael, Thanks for all replies I've got. I tried another Invent mote which was plugged into USB (for charging).
The readings swing around 4000. I think charging may be the cause of this. I'm quite new. Could you give me some explanation on "other ADC channel"? Do you mean try the other Invent mote? Unfortunately, the Invent platform (with sensors) is all I have. Best wishes, Ittipong On 05/03/2008, Michael Schippling <[EMAIL PROTECTED]> wrote: > > I'd be a little suspicious of the constant 4095 reading since that's > the max value for the ADC. You might try switching the mote sensor > to some other ADC channel, is there a temp or light sensor on the thing > that you could use? > > MS > > > Ittipong Khemapech wrote: > > All, > > > > I have been running Oscilloscope application (with no modification) on > > Tmote Invent. Also installed and ran BaseStation on Tmote Sky. > > > > After running SerialForwarder, I have a constant reading of (about) 4095 > > or 4096. > > > > According to the DemoSensorC.nc, the actual voltage is obtained by > > dividing the reading (ADC counts) by 4096 and multiplying by 3. > > > > So, I have 3 V. > > > > I have some questions: > > > > 1. Is it normal to have that 4095 (or 4096) all the time? > > > > 2. As Invent is not supported by TinyOS 2.x, is voltage the only reading > > I can get? > > > > Many thanks in advance, > > Ittipong > > > > Platforms - Tmote Sky and Invent > > OS - TnyOS 2.x > > Window XP & cygwin > > > > > > > ------------------------------------------------------------------------ > > > > > _______________________________________________ > > Tinyos-help mailing list > > [email protected] > > https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help > > > -- > Platform: WinXP/Cygwin > TinyOS version: 1.x, Boomerang > Programmer: MIB510 > Device(s): Mica2, MicaZ, Tmote > Sensor board: homebrew > >
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