hexbright power consumption reduction notes

clock - 10-100 microwatts, we're running at ~3.3 volts: 3-30 microamps
accelerometer - 120 samples: 300 microamps, standby (not enabled): 2-10 microamps
thermal - 6 microamps (typical)
buck-boost doesn't seem to turn off, but it should really only losses when driving the led.

atmega168pa - 150 microamps at 1MHz, 15 microamps at 32 khz (including on-board oscillator) - .1 microamps powered down. There are some sleep modes available, but they only really matter in standby
atmega168pa - 3 milliamps active supply current, 1mA idle supply current

http://www.atmel.com/Images/doc2545.pdf: page 321 has some notes on adjusting power consumption by disabling io subsystems


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current voltage regulator losses: 5.4 mA used total, 2.64 milliamps consumed by components with a loss of 2.75 milliamps

Formula for power loss in the voltage regulator: (4.2 - 3.3) * .500 + (4.2*.09)
.5 milliamps consumed by other components would cause a power loss of .83 milliamps, with 1.33 milliamps used
1 milliamp consumed, loss of 1.27 milliamps, 2.27 milliamps used
2 milliamps consumed, loss of 2.178, 4.178 milliamps used
3 milliamps consumed, loss of 3.078, 6.078 milliamps used