Sensebender Micro + BMP085 Module: Power Consumption
I intend to attach a BMP085 Module (http://www.ebay.com/itm/Replace-BMP085-5Pin-3-3V-5V-BMP180-Digital-Barometric-Pressure-Sensor-Module-/182056609374?hash=item2a636b665e:g:CU8AAOSwvg9XeI9z) to a SensebenderMicro.
As the module contains a power regulator which converts 5V to 3.3V for the BMP085 I would like to feed the battery supplied voltage directly to the 3.3V pin (simply to bypass the regulator).
Will the regulator drain my batteries through the 3.3V pin (although the 5V pin is not connected)?
Does the BMP085 chip need a regulated voltage to be accurate or will the sensor provide exact measurements if the voltage of the batteries drops below 3.0V?
Anyone has an idea?
I would remove the regulator, as it's not needed.
I have had a node running for the last 6 months based on a Sensebender Micro and a bmp180 (if I remember correctly).
Batteries have been used by the Sensebender alone in the 12 months prior to the addition of the bmp180, and the node still reports about 66% battery left (that's 18 months of service time, where the last 6 is with bmp180)