Hello,
I have been having some problems with my touch sensors on my VEX PIC robot. On my robot, I currently have eight touch sensors in the "Analog/Digital" ports (ports 1-8). I have noticed that only the sensors in the first four ports (ports 1-4) work. I have taken the sensors from the first four ports, which I know work, and placed them in ports 5-8, then they do not work. I did the same withthe senosrs in ports 5-8, and placed them in 1-4 and they DO work. I then used the sensors debugger window and saw that with all the senors plugged in, the microcontroller knew that they were being pressed. My question is, is there something special I have to do with the program for the ports 5-8 to work? Or is there something worng with my program? Any ideas or help is GREATLY appreciated. Thanks.

p.s. I intentionally commented out and disconnected the Sonar sensor, so I was dealing with ONLY touch sensors.

Here is my code:
#pragma config(Sensor, in1, rearLeft, sensorTouch)
#pragma config(Sensor, in2, rearRight, sensorTouch)
#pragma config(Sensor, in3, rightsideBack, sensorTouch)
#pragma config(Sensor, in4, frontLeft, sensorTouch)
#pragma config(Sensor, in5, frontRight, sensorTouch)
#pragma config(Sensor, in6, rightsideFront, sensorTouch)
#pragma config(Sensor, in7, leftsideFront, sensorTouch)
#pragma config(Sensor, in8, leftsideBack, sensorTouch)
//#pragma config(Sensor, in9, sonarFront, sensorSONAR, int1)
#pragma config(Motor, port1, rightFront, tmotorNormal, openLoop)
#pragma config(Motor, port2, leftRear, tmotorNormal, openLoop)
#pragma config(Motor, port3, leftFront, tmotorNormal, openLoop)
#pragma config(Motor, port4, rightRear, tmotorNormal, openLoop)
#pragma config(Motor, port5, arm, tmotorNormal, openLoop)
#pragma config(Motor, port6, claw, tmotorNormal, openLoop)
//*!!Code automatically generated by 'ROBOTC' configuration wizard !!*//

int i;
void forward();
void slightRight1();
void slightRight2();
void slightRight3();
void slightLeft1();
void slightLeft2();
void slightLeft3();
void backupRight();
void backupLeft();
void grabObject();

task main()
{
for(i=0;i<30000;i++)
{
forward();

if(SensorValue(rearLeft) == 1)//1
{
slightRight1();
}//end if

if(SensorValue(rearRight) == 1)//2
{
slightLeft1();
}//end if

if(SensorValue(rightsideBack) == 1)//3
{
slightLeft2();
}//end if

if(SensorValue(frontLeft) == 1)//4
backupRight();
}//end if

if(SensorValue(frontRight) == 1)//5
{
backupLeft();
}//end if

if(SensorValue(rightsideFront) == 1)//6
{
slightLeft3();
}//end if

if(SensorValue(leftsideFront) == 1)//7
{
slightRight2();
}//end if

if(SensorValue(leftsideBack) == 1)//8
{
slightRight3();
}

//if(SensorValue(sonarFront) > 5)
//{
//grabObject();
//}//end if and for

}//end main task



////////////////////////////////////////
void forward()
{
motor[port1] = 40;
motor[port2] = 40;
motor[port3] = 40;
motor[port4] = 40;
wait1Msec(1);
} //end forward
////////////////////////////////////////
void slightRight1()
{
motor[port1] = -40;
motor[port2] = -40;
motor[port3] = 40;
motor[port4] = 40;
wait1Msec(300);
}//end slightRight1
void slightRight2()
{
motor[port1] = -40;
motor[port2] = -40;
motor[port3] = 40;
motor[port4] = 40;
wait1Msec(300);
}//end slightRight2
void slightRight3()
{
motor[port1] = -40;
motor[port2] = -40;
motor[port3] = 40;
motor[port4] = 40;
wait1Msec(300);
}//end slightRight3
/////////////////////////////////////////
void slightLeft1()
{
motor[port1] = 40;
motor[port2] = 40;
motor[port3] = -40;
motor[port4] = -40;
wait1Msec(300);
}//end slightLeft
/////////////////////////////////////////
void slightLeft2()
{
motor[port1] = 40;
motor[port2] = 40;
motor[port3] = -40;
motor[port4] = -40;
wait1Msec(300);
}//end slightLeft2
/////////////////////////////////////////
void slightLeft3()
{
motor[port1] = 40;
motor[port2] = 40;
motor[port3] = -40;
motor[port4] = -40;
wait1Msec(300);
}//end slightLeft3
/////////////////////////////////////////
void backupRight()
{
motor[port1] = -40;
motor[port2] = -40;
motor[port3] = -40;
motor[port4] = -40;
wait1Msec(300);
///////slight back up/////////////

motor[port1] = -40;
motor[port2] = -40;
motor[port3] = 40;
motor[port4] = 40;
wait1Msec(1000);
///////turn right/////////////

}//end backupRight
/////////////////////////////////////////
void backupLeft()
{
motor[port1] = -40;
motor[port2] = -40;
motor[port3] = -40;
motor[port4] = -40;
wait1Msec(300);
///////back up/////////////

motor[port1] = 40;
motor[port2] = 40;
motor[port3] = -40;
motor[port4] = -40;
wait1Msec(1000);
///////turn left/////////////
}//end backupLeft
/////////////////////////////////////////
void grabObject()
{
motor[port1] = 0;
motor[port2] = 0;
motor[port3] = 0;
motor[port4] = 0;
motor[port5] = 0;
motor[port6] = 0;
wait1Msec(1000);//stops for 1 second

motor[port1] = 0;
motor[port2] = 0;
motor[port3] = 0;
motor[port4] = 0;
motor[port5] = -63;
motor[port6] = 0;
wait1Msec(1000); ////arm comes down

motor[port1] = 0;
motor[port2] = 0;
motor[port3] = 0;
motor[port4] = 0;
motor[port5] = 0;
motor[port6] = -10;//arm opens slowly
wait1Msec(1000);

motor[port1] = 0;
motor[port2] = 0;
motor[port3] = 0;
motor[port4] = 0;
motor[port5] = 0;
motor[port6] = 10;//arm closes slowly
wait1Msec(1000);

motor[port1] = 0;
motor[port2] = 0;
motor[port3] = 0;
motor[port4] = 0;
motor[port5] = 63;
motor[port6] = 0;
wait1Msec(2000); ////arm goes back up
}//end grabObject
/////////////////////////////////////////

I tested out all of my ports with touch sensors and they seem to be working. I don't have an identical setup to test your code, but the problem may be that you're turning on and off the same motors in different functions - causing the if statements to "fight" for control and making it seem like they're not working.

One easy way to improve your code may be to incorporate "else{}" branches with the if statements, to prevent different sections from fighting eachother: http://www.education.rec.ri.cmu.edu/pro ... f_else.pdf

Thanks, it works now.