https://learn.adafruit.com/led-ampli-tie/battery-pouch-and-flora
Battery Pouch & Flora | LED Ampli-Tie | Adafruit Learning System
Make your necktie light up like a VU meter! This Flora project uses the Electret Microphone Amplifier to trigger 16 Flora NeoPixels sewn with conductive thread...
flora ledbatterypouchamplitie