Trigger Effects - Adafruit Audio FX Manual

Trigger Effects

What do we mean by trigger effects? Well, depending on your project you may need to have audio play in different
ways. We thought of the five most common needs and built it into the Sound Board so you just rename the file to get
the effect you want.
1. Basic Trigger - name the file Tnn.WAV or Tnn.OGG to have the audio file play when the matching trigger pin nn
is connected to ground momentarily
2. Hold Looping Trigger - name the file TnnHOLDL.WAV or .OGG to have the audio play only when the trigger pin
is held low, it will loop until the pin is released
3. Latching Loop Trigger - name the file TnnLATCH.WAV or .OGG to have the audio start playing when the button
is pressed momentarily, and repeats until the button is pressed again
4. Play Next Trigger - have up to 10 files play one after the other by naming them TnnNEXT0.WAV thru
TnnNEXT9.OGG. Will start with #0 and each one on every momentary button press until it gets through all of
them, then go back to #0
5. Play Random Trigger - just like the Play Next trigger, but will play up to 10 files in random order (TnnRAND0.OGG
thru TnnRAND9.OGG) every time the button is pressed momentarily
© Adafruit Industries https://learn.adafruit.com/adafruit-audio-fx-sound-board Page 7 of 45