I am trying to build a simple circuit using this sound sensor: http://osepp.com/products/sensors-arduino-compatible/sound-sensor-module/
It detects sound fine when I'm plugged into the computer but when I'm just running on battery power (I'm using a Lithium Ion Polymer Battery - 3.7V 140mAh) the sensor no longer works. (It isn't that the battery is broken -- other circuits run fine.) Currently I have the sensor attached to VCC, Ground, and A2. Should I be attaching to other pins? Do I need a bigger battery?
It detects sound fine when I'm plugged into the computer but when I'm just running on battery power (I'm using a Lithium Ion Polymer Battery - 3.7V 140mAh) the sensor no longer works. (It isn't that the battery is broken -- other circuits run fine.) Currently I have the sensor attached to VCC, Ground, and A2. Should I be attaching to other pins? Do I need a bigger battery?