Comments on: Power consumption – baseline http://jeelabs.org/2009/05/14/power-consumption-baseline/ Computing stuff tied to the physical world Mon, 06 Feb 2012 13:55:24 +0000 hourly 1 http://wordpress.org/?v=3.3.1 By: jcw http://jeelabs.org/2009/05/14/power-consumption-baseline/#comment-99 jcw Sun, 17 May 2009 22:04:38 +0000 http://jeelab.wordpress.com/?p=1697#comment-99 <p>Solved - running reliably now @ 3.7 µA :)</p> Solved – running reliably now @ 3.7 µA :)

]]> By: jcw http://jeelabs.org/2009/05/14/power-consumption-baseline/#comment-98 jcw Sun, 17 May 2009 20:37:23 +0000 http://jeelab.wordpress.com/?p=1697#comment-98 <p>Yep - current draw is down to 3.7 µA with the RFM12 as watchdog. I'm adding a new rf12_sleep() function to the RF12 driver.</p> <p>Note: sometimes the JeeNode stays off for several seconds, then gets into full power mode, then goes back off again after a few seconds. Once that happens, it seems to stay in that on/off cycle. Not good. Will need to investigate further.</p> Yep – current draw is down to 3.7 µA with the RFM12 as watchdog. I’m adding a new rf12_sleep() function to the RF12 driver.

Note: sometimes the JeeNode stays off for several seconds, then gets into full power mode, then goes back off again after a few seconds. Once that happens, it seems to stay in that on/off cycle. Not good. Will need to investigate further.

]]> By: Stephen Eaton http://jeelabs.org/2009/05/14/power-consumption-baseline/#comment-95 Stephen Eaton Fri, 15 May 2009 05:50:36 +0000 http://jeelab.wordpress.com/?p=1697#comment-95 <p>damn that's small....</p> damn that’s small….

]]> By: jcw http://jeelabs.org/2009/05/14/power-consumption-baseline/#comment-96 jcw Thu, 14 May 2009 15:09:03 +0000 http://jeelab.wordpress.com/?p=1697#comment-96 <p>Ah, good point. Looks like the RFM12B watchdog takes about 1.5 µA, vs. 4 µA for the ATmega168 (I see that the P/V versions power down @ 0.1 µA without watchdog!). So power down usage could be low as 3 or 4 µA, probably even less without voltage regulator.</p> Ah, good point. Looks like the RFM12B watchdog takes about 1.5 µA, vs. 4 µA for the ATmega168 (I see that the P/V versions power down @ 0.1 µA without watchdog!). So power down usage could be low as 3 or 4 µA, probably even less without voltage regulator.

]]> By: Stephen Eaton http://jeelabs.org/2009/05/14/power-consumption-baseline/#comment-97 Stephen Eaton Thu, 14 May 2009 14:29:35 +0000 http://jeelab.wordpress.com/?p=1697#comment-97 <p>On top of this you could also use the RFM12B wakeup timer mode.</p> On top of this you could also use the RFM12B wakeup timer mode.

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