Adafruit Audio FX

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The sizes are reported in decimal bytes, 10 digits long seperated by a /

The first number is

remaining bytes

and the second number is total size.

Please note this is a blocking operation. Doing it too much/fast can cause your audio to stutter!

Main Page

Table of Contents2
Guide Contents2
Overview4
Amplifier or Headphone out6
Trigger Effects7
Tour9
Headphone Output Type10
Stereo Amplifier Type10
Pinouts12
Power Pins12
UART Pins13
Volume Trigger Pins14
Audio Outputs14
Trigger Pins15
Other Pins15
Copying Audio Files16
Powering It18
USB Power Pack18
Powering with Amplifer18
Wiring a Battery Pack to the Vin + GND Pins18
Using Vin JST Connector20
Using a Lipoly Backpack23
Triggering Audio24
- How Many Triggers Are There24
How Long Does It Take for Audio to Play Once I've Triggered the Pin24
Trigger Types25
- Basic Trigger - Tnn.wav or Tnn.ogg25
- Hold Looping Trigger - Tnnholdl.wav or Tnnholdl.ogg25
- Latching Loop Trigger - Tnnlatch.wav or Tnnlatch.ogg26
- Play Next Trigger - Tnnnext#.Wav or Tnnnext#.Ogg26
- Play Random Trigger- Tnnrand#.Wav or Tnnrand#.Ogg26
Wire up Buttons26
Serial Audio Control28
Arduino Library28
- Load Demo Sketch29
General Usage30
Commands31
IDLE Mode Commands31
- List Files31
- Volume up and down32
- Play Track by Number32
- Play Track by Name33
PLAY Mode Commands33
- Pause & Unpause33
- Stopping Playback33
- Current Playback Time34
File Size and Remaining34
Advanced Triggering36
- Trigger Order36
Basic Foreground & Background36
Advanced Background/Foreground36
Creating Audio Files38
How Much Music39
Compressed or no39
Stereo or Mono39
Bit Rates / Sample Rates39
Some Examples39
- Uncompressed WAV39
- Compressed Ogg Vorbis40
Troubleshooting41
Doesn't Show up as a Drive on My Computer41
I Can't Get Audio to Play When I Trigger the Pins41
Downloads42
Disk Images42
Datasheets & Files42
Schematic and Fabrication Print42
- Headphone out Version42
- Amplifier Version43
F.a.q45
- How Come 'Looping Tracks' Like TO1LATCH.WAV Dont Loop in UART Mode45
- I am Having Difficultly Triggering GPIO #9 and #1045
- If I Hold down a Button in 'Play Once' Tnn.wav Mode, It will Repeat45
- I Don't Have Short Delays between Loops, Whats up with that45

Adafruit Audio FX - Page 35

Table of Contents