If it's bipolar maybe it needs a shrink? sorry....couldn't resist. You'll need to bias the signal up such that it never goes below 0v or above the nominal 3.3v supply voltage. It might be as easy as using a couple of resistors, one to the signal and one to the supply. I'd start with around 10Kohms and see what ratio was needed to mix the signals together correctly. I think, but will not guarantee, that most micro-controller's can take very low current input that is out of their supply voltage range without damage while you are experimenting.
MS Naila Munaf wrote: > Im using imote2.And I want to read a bipolar signal from ADC > Generically, tinyos-2.x/tos/sensorboards/im2sb/examples/TestMax136 can > read only unipolar value of a battery voltage.How should i edit it to > read bipolar signal using ADC. > > > ------------------------------------------------------------------------ > > _______________________________________________ > Tinyos-help mailing list > [email protected] > https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help _______________________________________________ Tinyos-help mailing list [email protected] https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help
