Changing the volume on the Touch Board
Is your Touch Board too quiet or too loud? You're in the right place learn how to adjust the volume.
Materials To begin you will need:
1 x Touch Board
1 x USB A to Micro B cable
1 x Computer running Mac OSX,
Windows or Linux
1 x Micro SD card with MP3 tracks
1 x Headphones or speakers
Step 1 Changing the volume
This is an easy, one-step tutorial! First, we’re assuming that you have set up Arduino to work with your Touch Board on your computer. If not, follow the link below, complete that tutorial and come back when you’re done.
Changing the volume on the Touch Board is as simple as adding the line: MP3player.setVolume(X,Y); to your code, where X is the left channel volume and Y is the right channel volume. Lower values represent higher volumes, so MP3player.setVolume(0,0); will set the volume to maximum on both channels, and MP3player.setVolume(254,0); will set the left channel to be silent, with the right channel at maximum volume. This can go anywhere in the code, provided that it is AFTER the MP3player.begin(); line.
Don’t forget to upload the modified code to the board in order to see the changes.
For the technically minded, the volume units are -0.5dB per count, so a value of 40 sets the volume to -20dB (with respect to maximum).