Feature Request: low power mode

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Feature request: 

Device is always on and as it has no power switch it means that battery usage 
is high.  It would be nice to put device into low power mode if the button is 
held for 2 or more seconds in effect turning it off.

pushing the button will awake the device

Original issue reported on code.google.com by madeino...@gmail.com on 29 Jan 2011 at 7:10

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Have implemented and now shutting down when button is pressed for 2sec.  

Power before implementation when idle is ~7.8ma

Power after implementation when idle is approx ~2.8ma

This is still too high and currently investigating why it's so.   

I thinks that the regulator VR1 may be the problem.  Still doing testing.

Original comment by madeino...@gmail.com on 31 Jan 2011 at 1:44

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have committed changes to date but requires further investigation

Original comment by madeino...@gmail.com on 31 Jan 2011 at 3:59

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I think its down to the linear regulator, but need to confirm on a board and 
isolate

Original comment by sea...@strobotics.com.au on 19 Feb 2013 at 9:12

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have started a redesign of the Power supply utilising Switched DC/DC regulators 
and LiPo battery 

Original comment by sea...@strobotics.com.au on 27 May 2013 at 7:20