The mica's ATMEGA chips have 10 bit ADC converters so you should expect readings from 0 to 0x3FF
I "think" your voltage reading is about right as it's near to 1/2 scale and the mica2 schematic shows it reading a fixed voltage ref of 1.2v, which is about 1/2 scale. I believe, but am not sure, that the micaz does the same thing. (I know, WTF is with reading a fixed value to get battery voltage? Well the ADC's Vref _is_ the battery voltage, thus the reading should effectively _increase_ as the battery droops...) So... I don't know about the temp range, but if you are in a brightly lit lab, having a nearly full scale photo reading might work. Try putting a box over the sensor board and see if it changes. As for the Mic, in general I think you get the instantaneous sound pressure, which should be a fast moving AC signal centered around 1/2 scale. So that could be right. See if you get wildly changing values, and I might actually be right... MS Kendra Lukowski wrote: > Hi, > > I am using the MTS300 sensor board with MicaZ. What range should I > expect for the readings? What I am getting seems high. For example: > > Temp = 0x1ee > Photo = 0x3b2 > Mic = 0x1c4 > Voltage = 0x1ba > > Thank you for any assistance, > > Kendra > > > ------------------------------------------------------------------------ > > _______________________________________________ > 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
