have several of these PIR modules and connecting to a PIC.
my question is will it draw less current if I run the PIR connected to 9v or 4.5v.
planned on inserting a base resistor on the output to take the 3v output LOW connected to my PIC to trigger the circuit (Q3)see schematic
as is without the PIR connected the circuit draws 2.3ma untriggered and 29.6 ma triggered.
trying to conserve as much battery power as feasible.
using AAA batteries.
the schematic shows 9v as I originally had an LM386 amp on the output but the amp draws 90ma by itself.
any suggestions??