[Tinyos-help] can Tmote sky ADC port be used to measure negativevoltage

[Oussama Chougna]

Hi,

 

I have this problem too.

If you check the schematics in the TMote Sky datasheet, you will see that
the negative reference voltage pin is grounded.

So you can measure only between 0 and any value.

 

 

oussama

 

  _____  

From: tinyos-help-bounces at Millennium.Berkeley.EDU
[mailto:tinyos-help-bounces at Millennium.Berkeley.EDU] On Behalf Of yicheng
Sent: woensdag 25 april 2007 20:53
To: tinyos-help at Millennium.Berkeley.EDU
Subject: [Tinyos-help] can Tmote sky ADC port be used to measure
negativevoltage

 

Hi,

 

Just want to know if negative voltage (like -1.5v) can be measured by any
Tmote sky ADC port? If yes, how can I do it? Do I need to set a negative
reference voltage?

 

Thanks!

Yicheng

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