Hi Jon, With the IRIS you can sample at 17 KHz a single channel, and send it over the radio to a basestation. Switching channels is costly, so probably the maximum sample rate is around 9000 samples per second total on all channels. Fast channel switching is not yet implemented, but doable.
Miklos On Fri, Apr 9, 2010 at 8:40 PM, Jon Smirl <[email protected]> wrote: > On Fri, Apr 9, 2010 at 2:29 PM, Robert F. Ammon <[email protected]> > wrote: >> I need at least 150Hz for one channel (the more the better) and the >> others do not need to be fast at all as the sensors attached will not >> change all that fast. > > Check out mc13224 based motes. > http://www.redwirellc.com/store/ > > Their $55 econotag has an integrated USB based JTAG programmer - no > need for an external one. > 8 ADC channels that can sample at 10Khz > > Software is here: > http://mc1322x.devl.org/ > >> >> Robert >> >> >> Quoting Miklos Maroti <[email protected]>: >> >>> Hi Robert, >>> >>> What sampling rate do you want to achieve? >>> >>> Miklos >>> >>> On Thu, Apr 8, 2010 at 8:37 PM, Robert F. Ammon >>> <[email protected]> wrote: >>>> (This was sent back to me because it was identified as spam by the >>>> mailing list and I do not think that it was actually sent to the list. >>>> Sorry if this is the second one I have sent) >>>> >>>> Hello, >>>> >>>> I am currently working on a project using an Iris mote and I am having >>>> some problems. I have developed a custom sensor node that I have >>>> attached to a female 51-pin connector. There are three sensors on the >>>> node that are currently hooked up to ADC0-2. What I want to do is write >>>> a program that will sample all three of these sensors (only one has to >>>> be at a high rate) and perform some processing on them. The processing >>>> itself is simple and easy, getting the actual data to do the processing >>>> on? A little more complicated, at least to me. I have looked around the >>>> internet, the tutorials, and the mailing list for the last several days >>>> and have just ended up more confused than before. >>>> >>>> I have seen differing opinions on how to sample several sensors at >>>> once, I have seen several opposing views on what files to modify or >>>> create, and so on and so forth. Could someone please explain (or point >>>> me in the direction of a guide) how you can sample several channels of >>>> the ADC at once and store that data in a buffer? >>>> >>>> Your help is greatly appreciated. >>>> >>>> Robert Ammon >>>> >>>> _______________________________________________ >>>> 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 >> > > > > -- > Jon Smirl > [email protected] > _______________________________________________ Tinyos-help mailing list [email protected] https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help
