#include  
Servo myservo;  // create servo object to control a servo 
            
int pos = 0;    // variable to store the servo position 
int minx = 0;   //local minimum vertical hieght
int trans = 180;  //var for changing position from A1 rheostat
int lim = 25;   // the limit: varies based on physical factors
int HOME = 100;
void setup() { 
  //delay(5000);
  Serial.begin(9600);
  myservo.attach(9);       // attaches the servo on pin 9 to the servo object is pin9 ==A0?
  pos = myservo.read();    // if the servo is high, or low set servo position to 0
  if (pos > 0 || pos < 0){
 // myservo.write(30);       //directdrive servo mech
 myservo.write(HOME); //init position for rack and pinion
 //delay(3000);
  }
} 

void loop() { 
//int sensorValue = analogRead(A1); //resistors on PSU shouldnt change 
//Serial.println(sensorValue);
int sv = analogRead(A0);      //sensor value
int trans = analogRead(A1);

//Serial.println(sv);
 //Serial.println(pos);
 pos = trans / lim; //0 - 26
  //myservo.write(pos+100);  
 //Serial.println(trans);  //
//myservo.write(-trans); 

if(sv < 200){
  myservo.write(HOME-pos);  
} else{
      //myservo.write(trans);
      myservo.write(HOME);
      }
//if(sensorValue > 900){ // its done drawing, and out of range anyways
if (sv > 600 ){
myservo.write(HOME);       // go back to neutral position
//delay(5);
 }
/* */
}