Data Sheet
4D SYSTEMS SOMO-II
© 2014 4D SYSTEMS Page 11 of 17 www.4dsystems.com.au
SOMO
-II Embedded Audio
-Sound Module
CONTINUOUS
MODE
2
220K ohm
This will enable Continuous Mode, which will play all the files
on the media one after the other and stop when it reaches the
last audio track. Pressing PLAY or NEXT once it has stopped,
will start the process over. Default is for this mode to be off,
which will just play a single track and then stop. Pressing this
button again will disable this mode.
RANDOM
TRACK MODE
2
100K ohm
This will enable Random Mode, which will play a random track
off the media, followed by another random track, continuously.
Pressing this button again will disable this mode.
Track 1
Folder 1
2
51K ohm
This will play Track 1 from Folder 1, as a quick method to jump
to a specific audio file.
Track 1
Folder 2
2
33K ohm
This will play Track 1 from Folder 2, as a quick method to jump
to a specific audio file.
Track 1
Folder 3
2
24K ohm
This will play Track 1 from Folder 3, as a quick method to jump
to a specific audio file.
Track 1
Folder 4
2
15K ohm
This will play Track 1 from Folder 4, as a quick method to jump
to a specific audio file.
Track 1
Folder 5
2
9.1K ohm
This will play Track 1 from Folder 5, as a quick method to jump
to a specific audio file.
Track 2
Folder 1
2
6.2K ohm
This will play Track 2 from Folder 1, as a quick method to jump
to a specific audio file.
Track 3
Folder 1
2
3K ohm
This will play Track 3 from Folder 1, as a quick method to jump
to a specific audio file.
Track 4
Folder 1
2
0R ohm
This will play Track 4 from Folder 1, as a quick method to jump
to a specific audio file.
Connecting up the Resistors and Pushbuttons to the ADKEY inputs
The connection of the push buttons to the ADKEY’s is simple. Simply connect the resistor required to the
ADKEY1 or ADKEY2 inputs of the SOMO-II module, and connect the other end of the resistor to one side of
your push button. Connect the other side of your push button to GND.
Each ADKEY will have up to 10 resistors coming off it, each with its own push button. Only the resistors and
buttons required can be connected, it is not necessary to connect all the resistors and buttons. The specific
resistor value must be used however to control the specific function, this cannot be changed.
Please refer to image on following page.