As long as you're getting a varying reading things are probably working.
It's just that 4095 == 0xFFF which is a bit suspicious.
By other ADC channels I meant are there other sensors on the Invent
that you can use? You don't say what program you are running on the
re-Mote, but you should be able to switch the sampled sensor in
the config file. In fact I think that's one of the tutorial exercises.
MS
Ittipong Khemapech wrote:
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]
<mailto:[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
>
>
>
------------------------------------------------------------------------
>
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> [email protected]
<mailto:[email protected]>
>
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--
Platform: WinXP/Cygwin
TinyOS version: 1.x, Boomerang
Programmer: MIB510
Device(s): Mica2, MicaZ, Tmote
Sensor board: homebrew
--
Platform: WinXP/Cygwin
TinyOS version: 1.x, Boomerang
Programmer: MIB510
Device(s): Mica2, MicaZ, Tmote
Sensor board: homebrew
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