File content as of revision 7:8881672744fd:

 #include "mbed.h"
#include "stdio.h"
#include "Motor.h"
#include "Servo.h"
#include "time.h"

Motor knife(p26, p30, p29);
Servo finish(p22);
Servo start(p21);
DigitalOut led[4]={LED1, LED2, LED3, LED4};
int i, j;
int x;


int main() {
        start.calibrate(0.0009, 90.0);
        finish.calibrate(0.0009, 90.0);
       
        start = 0.25; //lowers start gate
        wait (1.0); //gives time for crab to get down track
        
        x = (rand()%9)+1;
        printf("%d", x);
        
        start = 0.0; //set initial start gate position  
    
  
        if (x <= 7) {
            finish = 1.0; //gate has a 70% chance to go one way
            for (i=0; i<5; i++) {
                led[i] = 1;
                wait (0.15);
                led[i]=0;      
            }
        }
        else { //30% chance the gate will go the other way 
                finish = 0.0; 
                knife.speed (0.5);
                wait (.5);
                knife.speed (-0.5);
                wait (.5);
                knife.speed(0); 
                }   
                
        finish = 0.5; //set finish gate to halfway point
                
          
        }