I have a project using a 3.3V Arduino Pro Mini, a lithium rechargeable battery, and a mono audio amplifier breakout. When sound plays, the voltage drops from 3.3 V to 2.8 and it resets.
I'm a bit new to this stuff, and I'm wondering if I need a capacitor to prevent this from happening, and if so, what type I need.
I'd appreciate any suggestions. Thanks.