Well, I would start by looking at the specs for my sensor to see what kind of signal it puts out. If it's an analog voltage and it's in the 0-3v range you can just connect it to an ADC input and start programming. Otherwise you may need a resistor ladder to reduce the voltage or an op amp to amplify it. But it may be pulse-width encoded or even serial data as I suggested.
MS Richard wrote: > Sir, > > I think we must create a board like the smiths-medical > have the is compatible also for telosB. It can detect > and output the pulse rate and the oxygen saturation. > Also we could add the temperature sensor in there to > have temperature reading to be send to the ADC port of > telosB. But the problem is how could we start doing > it? I have no idea on what to do first. Hope that > someone could help me in my problems and give some > suggestions on what to do. Thank you. > > Richard > >> Richard wrote: >>> Sir: >>> >>> >>> I have a problem in the connection of external >> sensors like temperature >>> and pulse oximeter to the expansion port of the >> telosB. what are the >>> ways to do it? do I need to design data >> acquisition board for the >>> external sensor before connecting it into the ADC >> port located in the >>> expansion port of telosB or is it connected >> directly to the ADC port in >>> telosB. please help me in this matter. Thank you. >>> >>> P.S. Pulse oximeter is using DB9 connector. Thank >> you. >>> >>> >>> Richard > > > > ____________________________________________________________________________________ > Be a better friend, newshound, and > know-it-all with Yahoo! Mobile. Try it now. > http://mobile.yahoo.com/;_ylt=Ahu06i62sR8HDtDypao8Wcj9tAcJ -- Platform: WinXP/Cygwin TinyOS version: 1.x, Boomerang Programmer: MIB510 Device(s): Mica2, MicaZ, Tmote Sensor board: homebrew _______________________________________________ Tinyos-help mailing list [email protected] https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help
