I have written code using RobotC for the FirstTech robot. When we compile the program we get no errors. We are set up to use two NXT motors through Motor A and Motor B ports on the NXT. We are driving four additional 12V motors through the Senor ports via motor controllers two through S1, two through S2, and are trying to run two servos through S4. We are getting power and some reaction from the servo and NXT motors from the program, but no reaction from the 12V motors at all. During the debug process we keep getting "Motor out of Range" and "Servo out of Range" errors. This happens before any input is recieved from the joystick. I need any help or input I can get. Thanks.

Post your code.

I second that motion.

hi, we keep getting the error message

exception type: 'servo out of range(34)
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#pragma config(Hubs, S1, HTMotor, HTServo, HTMotor, none)
#pragma config(Sensor, S4, Compass, sensorI2CHiTechnicCompass)
#pragma config(Motor, mtr_S1_C1_1, motorD, tmotorNormal, PIDControl)
#pragma config(Motor, mtr_S1_C1_2, motorE, tmotorNormal, PIDControl)
#pragma config(Motor, mtr_S1_C3_1, motorF, tmotorNone, openLoop)
#pragma config(Motor, mtr_S1_C3_2, motorG, tmotorNone, openLoop)
#pragma config(Servo, servo1, Servo1, tServoNormal)
//*!!Code automatically generated by 'ROBOTC' configuration wizard !!*//

#include "JoystickDriver.c"

float jx; //joystick input for direction control
float jy; //joystick input for speed control
float sf; //speed factor
float sl; //speed limit
float lws; //left wheel speed
float rws; //right wheel speed
int lwsi; //left wheel speed
int rwsi; //right wheel speed


task main()
{



sl = 20; // set speed limit
getJoystickSettings(joystick); //Update initial joystick/game values

while(joystick.StopPgm) //While the FMS says we're "disabled", keep looping
{
getJoystickSettings(joystick); //Update joystick/game values to see if enabled
wait1Msec(50); //wait 50 milliseconds
}


motor[motorD] = 100;
motor[motorE] = 100;

wait1Msec(1500);

motor[motorD] = 0;
motor[motorE] = 0;



while (true)
{
getJoystickSettings(joystick);
//////------------ Drive Motor Speed Control---------------
// Control Speed of motor
jx = joystick.joy1_x1;
jy = joystick.joy1_y1;
sf = jy/127;
if (jy > 0) // go forward
{
if (jx > 0) // turn right
{
lws = sl * sf;
rws = lws - (sl * (jx/127));
}
else // turn left
{
rws = sl * sf;
lws = rws - (sl * ((jx * -1)/127));
}
}
else // go backward
{
if (jx > 0) // turn right
{
lws = sl * sf;
rws = lws + (sl * (jx/127));
}
else // turn left
{
rws = sl * sf;
lws = rws + (sl * ((jx * -1)/127));
}
}
lwsi = lws;
rwsi = rws;
motor[motorD] = lwsi;
motor[motorE] = rwsi;

/// -- old --
// motor[motorD] = joystick.joy1_y1;
// motor[motorE] = joystick.joy1_y1;

//////------------ Drive Motor Speed Control-------END--------

motor[motorA] = joystick.joy2_x2;
motor[motorB] = joystick.joy2_x2;
servoTarget[servo1] = joystick.joy2_x2 + 127;
//servoTarget[servo3] = joystick.joy2_y1 + 127;
}}

What version of RobotC do you have installed? If you have upgraded from one version to another, did you completely uninstall the old version before installing the new version? What is the version number of the firmware on your NXT?

In the Motor/Servo configuration page, you need to to open up the "FTC Servo/Motor Ctl" tab, click on the "Custom" radio button and adjust your setup accordingly. Each of the rows (S1, S2, etc..) represents a different sensor port on the NXT. I've included a screenshot that will show you how to configure it the way you want although I would recommend daisy-chaining the controllers together. Hope this helps.