logger power , sleep power
logger power stays ~42,7ma at 10 sec cycle time to ~42.7ma / 60 sec cycle time to -42.7ma at 10min cycle time. hence no savings when minimizing data logging, The power down function only reduced power to ~36.8ma. which is a 14% saving... not enough when you are logging a DHT sensor/logger system with a 9V battery for 3-5 months not 40 hours not even 2 days...
UPDATE 10-2013 :
the WDT and AVR sleep reduces the current to 10-11 ma. Is there a MCU board which connects to the logger and programed from a pc that reduces this to below 1 ma when in a power down mode using 4 AA (4.6V) power….
Final update 1-8-2014... the fully assembled logger takes less current than the old unit. The new one has the LED disabled to reduce the current to about a mill. with a 1511 cycle for statement to sleep for 4 hours, the system was installed in the field. I will be retrieved in 2 months.
Last edited by bethesdakid
on Wed Jan 08, 2014 10:17 pm, edited 2 times in total.