motor calibration

/* 6 Wheel Calibration
*
* Use this sketch to calibrate the wheels in your robot.
* Your robot should drive as straight as possible when
* putting both motors at the same speed.
*
* Run the software and follow the on-screen instructions.
* Use the trimmer on the bottom board to make sure the
* robot is working at its best!
*
* (c) 2013 X. Yang
*/
#include "scripts_library.h"

#include <ArduinoRobot.h>
#include <Wire.h>
#include <SPI.h>

void setup(){
  Serial.begin(9600);
  Robot.begin();
  Robot.beginTFT();
  Robot.beginSD();

  Robot.setTextWrap(false);
  Robot.displayLogos();

  writeAllScripts();

}
void loop(){
  int val=map(Robot.knobRead(),0,1023,-255,255);
  Serial.println(val);
  Robot.motorsWrite(val,val);

  int WC=map(Robot.trimRead(),0,1023,-20,20);
  Robot.debugPrint(WC,108,149);
  delay(40);

}