Datasheet

4D SYSTEMS SOMO-II
© 2014 4D SYSTEMS Page 14 of 17 www.4dsystems.com.au
SOMO-II Embedded Audio-Sound Module
7. Media – micro-SD and USB Flash
Micro-SD cards 7.1.
The SOMO-II uses off the shelf micro-SD and
microSD-HC memory cards with up to 32GB
capacity, and compatible
with both FAT16 and FA32
file formats. The formatting
of the card can be done on
any PC/Mac/Linux system
with a card reader. Select
the appropriate drive and choose the FAT16 or
FAT32 file format, depending on the capacity of
your micro-SD card. The card is now ready to be
used in the SOMO-II.
NOTE: Certain brands of micro-SD memory cards
may not work properly. This is evident by some
files that may be skipped and not played by the
SOMO-II.
USB Flash Drive 7.2.
The SOMO-II is compatible with a range of USB
Flash Drives, and has a USB 2.0 interface. It does
however require an external USB socket to be
installed and connected to the USB+, USB-, and
GND pins of the SOMO-II. If the SOMO-II is not
powered with 5.0V, then an external 5V supply will
be required and connected to the USB socket, else
the VCC from the SOMO-II can be connected to the
USB socket if the SOMO-II is powered from 5.0V.
Some USB Flash Drives may operate down to as
low as 3.7V, however it is recommended to use 5V
when using USB Flash Drives.
The USB Flash Drive can be up to 32GB in capacity,
and formatted with either FAT16 or FAT32,
depending on the capacity of the card.
NOTE: Certain brands of USB Flash Drives may not
work properly. This is evident by some files that
may be skipped and not played by the SOMO-II.
8. Mechanical Dimensions
The height of the module is ~11.3mm
9. Development and Support Tools
Interfacing 4D Systems Display Modules 9.1.
4D Systems offers a wide range of Intelligent
Display Modules which are perfectly suited to
interface with the SOMO-II, to provide a front end
GUI for users to interact with the SOMO-II.
While any of the 4D Systems Intelligent Display
modules are capable of interfacing with the
SOMO-II, ones which feature a Resistive or
Capacitive touch screen would be the best choice,
so no external buttons are required, and
communications between the SOMO-II and the
Display Module are over Serial, using SERIAL-
MODE.
Perfectly suited modules would be the following:
uLCD-32PTU
uLCD-35DT
uLCD-43PT or uLCD-43PCT
uLCD-70DT
Please refer to the 4D Systems website
(www.4dsystems.com.au) for information
regarding these modules.