[Tinyos-help] Issue with the ADC on an Iris Mote using TinyOS 2.x

Robert F. Ammon Robert.Ammon at tufts.edu
Fri Apr 9 11:49:18 PDT 2010


Thank you for the idea, but I already have the Iris motes, so there 
wouldn't be much point in me buying more. Thanks for the suggestion 
though.

Robert


Quoting Jon Smirl <jonsmirl at gmail.com>:

> On Fri, Apr 9, 2010 at 2:29 PM, Robert F. Ammon 
> <Robert.Ammon at tufts.edu> 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 <mmaroti at math.u-szeged.hu>:
>>
>>> Hi Robert,
>>>
>>> What sampling rate do you want to achieve?
>>>
>>> Miklos
>>>
>>> On Thu, Apr 8, 2010 at 8:37 PM, Robert F. Ammon
>>> <Robert.Ammon at tufts.edu> 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
>>>> Tinyos-help at millennium.berkeley.edu
>>>> https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help
>>>>
>>>
>>
>>
>>
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>
>
>
> --
> Jon Smirl
> jonsmirl at gmail.com
>





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