[OpenTRV-dev] V0.2-Arduino

[Stuart Poulton]

Kevin,

Can you provide more details on your current measuring capabilities ? What sort of info can it provide, eg how small a current can be measured ? I'm assuming it's a commercial device ?

Thanks

Stuart
On 21 Apr 2013, at 23:40, Kevin Wood wrote:

> Hi Damon,
> 
> Good work.
> 
> By the way, I have the capability to measure average current over long periods as we have a product which does this for mobile phones. Might be especially useful where you have very low idle consumption with occasional high peaks.
> 
> Occupation detection by sound is an interesting idea. Do you even need to go as far as an FFT?
> 
> Best Regards
> 
> Kevin
> 
> On 21/04/13 19:22, Damon Hart-Davis wrote:
>> FYI, I'm plodding along with this work:
>> 
>> https://sourceforge.net/p/opentrv/code-0/HEAD/tree/trunk/Arduino/V0p2_Main/
>> 
>> and running a simple software RTC (HH:MM:SS local time; no dates as of yet) and skeleton UI, current consumption is at the limit of my ability to measure (~1uA, 1 micro amp) without the LED flashing and when running off 2xAA NiMH.
>> 
>> This is essentially a rehash of the PICAXE V0.09/V0.1 work.
>> 
>> I may finally get to play with the new TMP102 temp sensor (the real board would have a TMP112 for better accuracy) tomorrow.
>> 
>> Also, for giggles, I have bought a tiny microphone (ADMP401) with a view to prototyping occupancy detection by detection of voice frequencies (using one of the FFT libraries for the AVR).
>> 
>> Rgds
>> 
>> Damon
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