The Trainer-xM Board is an expansion/breakout board for the BeagleBoard-xM that adds:
- I2C interface (level translated to +3.3V or +5V)
- SPI interface (level translated to +3.3V)
- GPIO's (level translated to +3.3V)
- Standard prototyping area with 0.1" x 0.1" matrix
- An embedded ATmega328 processor that can be user programmed. The ATmega328 can be jumpered to run at 3.3V or 5V
- The ATmega328 is Arduino hardware compatible
- The BeagleBoard-xM can communicate to the ATmega328 processor via its second RS232 serial port
- The BeagleBoard-xM can turn the power to the ATmega328 on or off with one of it's GPIO pins
The Trainer-xM board is compatible with the BeagleBoard-xM. It has a low profile male header (2x14) that mates with the BeagleBoard-xM's female expansion header.
The Trainer-xM is identical to the original Trainer board except that it has a low profile male header (2x14) installed in the expansion connector. This allows it to connect the the BeagleBoard-xM's female header.
The Trainer-xM provides an interface to the BeagleBoard-xM's I²C port. The
I²C signals are level translated to either +3.3V or +5V (user selectable
with a jumper). The I²C signals are located next the the prototyping
The Trainer-xM provides an interface the the BeagleBoard-xM's SPI port and the
signals are level translated to +3.3V. The SPI signals are located
next to the prototyping area.
The Trainer-xM provides an interface to several of the BeagleBoard-xM's GPIO signals. The GPIO
signals are level translated to +3.3V and are located next to the prototyping area.
Prototyping / Breakout Area
The Trainer-xM provides a standard prototyping / breakout area with a
standard 0.1" x 0.1" matrix. The user can use this area to prototype
their design and interface it to either the BeagleBoard's level
translated signals or to the ATmega328's I/O pins.
ATmega328 Embedded Processor
An ATmega328 embedded processor is located on the Trainer board that is
user programmable. The ATmega328 is hardware compatible with the
Arduino and the ATmega328's I/O signals are available next to the
prototyping area. The ATmega328 can be user jumpered to run at +3.3V or
+5V. One of the BeagleBoard-xM's GPIO signals controls the ATmega328's
power supply and can turn on or off the power to the ATmega328. The
ATmega328 has an 8.0 Mhz oscillator.
The Trainer board ships with the Arduino boot loader flashed into the ATmega328.
RS-232 Serial Port
The Trainer-xM provides a second RS-232 serial port that interfaces to the
ATmega328 processor. Commands can be transmitted back and forth between
the BeagleBoard-xM and ATmega328 processor.
Board size = 3.0 inches x 3.1 inches
Each Trainer-xM board comes with the following hardware:
- Four (4) board standoffs
- Four (4) board to board spacers
- Eight (8) screws
1) Makezine post about the Trainer Board is located here
2) Facebook article about the Trainer Board SPI is located here
An external power supply that works with the
BeagleBoard is located here