Felix wrote: > Awesome!! From idea to some kind of prototype in less than 2 weeks!!
Well, there's still a lot missing ;-) > Btw, I don't how well will handle a cr2032 a current of almost 10ma; 10 mA is just the display. There's also MCU, memory card, and possibly RF. Most of them have low duty cycles, though. > I know > the lcd only will be on for sort period of time (~2min?), 2 minutes is quite a lot. I don't think you'd want to spend more than a minute on entering a password. Probably a lot less. > but it'll > interesting to know what life battery cand we expect with this consumption. I did a first estimate a while ago: http://lists.en.qi-hardware.com/pipermail/discussion/2013-September/010189.html > Say for example, the screen is on 10 times a day for 2 minutes, with 210mah > from a cr2032, and a sleep consumption of 0.1 mA we can expect: I think we should be able to achieve a standby current < 10 uA. The components that draw battery power directly are the MCU, RF, and the boost converter. Each of them should be able to idle at less than 1 uA. > It's a bit low, no? Well, with half the daily power consumption, I estimated about two months of daily use on a battery. According to Amazon.com, a pack of ten CR2032 should cost about USD 2-3 and would last almost two years. - Werner _______________________________________________ Qi Hardware Discussion List Mail to list (members only): [email protected] Subscribe or Unsubscribe: http://lists.en.qi-hardware.com/mailman/listinfo/discussion
