[Andy Brockway]

Joe,

First are you using the 2003 EduRC with its internal Modem? The cabling goes between the two EduRC's to link them serially through the DB9 ports. The RC modem is not used.

The user_routine.c file is specific about which joystick controls which pwm_out.

================================================== ==========
pwm01 = pwm03 = Limit_Mix(2000 + OIData->p1_x + OIData->p1_y - 127); /* LEFT WHEELS */
pwm02 = pwm04 = Limit_Mix(2000 + OIData->p1_y - OIData->p1_x + 127); /* RIGHT WHEELS */
pwm01 = pwm03 = 255 - pwm01; /* reverse direction of left side */


/* ------ Other PWM OUTPUT Mapping (can be used for two-joystick drive ------*/
pwm05 = OIData->p3_x; /* limited by digital inputs 1 & 2 below */
pwm06 = OIData->p3_y; /* limited by digital inputs 3 & 4 below */
pwm07 = OIData->p4_x;
pwm08 = OIData->p4_y;

================================================== ===

Plugging into pwm03 may be giving you the strange actions. The default program uses it with the mix routine. The syntax is also very picky for OIDATA->___. Also if the modem on the 2003 EduRC is not firmly seated into the motherboard you wil get erratic motion up to and including basic run and init errors.

We have successfully adapted our 2003 code and can run our 2003 robot with this setup and our 2003 OI.

Andy Brockway
Team 716