I'm going to build an Ardu-Survey-Boat fro 3d bottom mapping based on this hardware:
120A esc with Sbec 6V regultated at 5V to meet AMP compl.
9ch WFLY radio with Jeti RX PPM SUM
Boat Hull Surge Crusher EP XXL with Steering servo and Brushless motor
CruzPro Echosounder ATU120BT for depth readings
3DR leah GPS
Xbee Pro 900 mhz telemetry
What I need to know if there is an usable serial port (UART) on the AMP2.5 as the echosounder data comes from a 232 serial on nmea0183 format, I make a rs232/TTL converter for this.
I notice looking at eagle shematics that serial2 (pin 12 and 13 on Atmega) is connected to output spare pin and to the MUX pad. I hope that as I use the MUX function between telemetry and USB I can use the serial2 for the echosounder.
If someone can confirm this I'll be happy :-)
Also some suggestion on how to enable and setup the baudrate of the serial2 will be appreciated, I have ready a library to parse the simple nmea string coming from the echo.
Thanks in advanced