ah, I think I see. The sensor "puts out" a certain voltage for a certain input. You could use an amplifier to increase the output voltage at the low end or you can lower the ADC reference voltage. Both will clip the high end of the range.
Unfortunately there's probably no way to do either of those on the mica2 and micasb boards... MS Rafael Aguilar Velez wrote: > Thank you for answering Michael. Having control in the digitalization > band tends to increase the resolution of the readings of the > accelerometer. If I reduce the range of the band of digitalization I can > have more "points" and so I can get more resolution. > For example if I read from +-2g I will have less resolution than reading > between +-0.1g. > > Do you know how can I do this? > > Regards, > > > Rafael > > ------------------------------------------------------------------------ > > *De:* Michael Schippling [mailto:[EMAIL PROTECTED] > *Enviado el:* jue 7/10/2008 5:46 > *Para:* Rafael Aguilar Velez > *CC:* [email protected] > *Asunto:* Re: [Tinyos-help] ADC characteristics in MICA2 board > > The ATMEGA128 has 10 bit ADCs, see the controller manual for > all the detail you could ever hope for. > > I don't know what you mean by "digitalization band"... > > MS > > Rafael Aguilar Velez wrote: > > Dear all, > > > > > > > > Does someone know the characteristics of the ADCs in the MICA2 board? I > > mean the number of bits of its resolution? > > > > Another question is that I am trying to vary the digitalization band in > > order to improve the resolution of the accelerometer readings, does > > someone knows how to do this? > > > > > > > > Thank you very much for your answers and for your help, > > > > > > > > Rafael > > > > > > ------------------------------------------------------------------------ > > > > _______________________________________________ > > 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
