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: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of yicheng Sent: woensdag 25 april 2007 20:53 To: [email protected] 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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