Notes

#include <Servo.h>

Servo servo1;



// variables to hold the pushbutton states

// Define the analog input pin to measure flex sensor position:

const int flexpin = 0;


void setup()
{
// Use the serial monitor window to help debug our sketch:

Serial.begin(9600);

// Enable control of a servo on pin 9:

servo1.attach(9);


// Set up the LED pin to be an output:

}


void loop()
{
static int position;
int flexposition; // Input value from the analog pin.
int servoposition; // Output value to the servo.

// Read the position of the flex sensor (0 to 1023):

flexposition = analogRead(flexpin);

// Because the voltage divider circuit only returns a portion
// of the 0-1023 range of analogRead(), we'll map() that range
// to the servo's range of 0 to 180 degrees. The flex sensors
// we use are usually in the 600-900 range:

servoposition = map(flexposition, 700, 980, 0, 180);
servoposition = constrain(servoposition, 0, 180);

// Now we'll command the servo to move to that position:

servo1.write(servoposition);

// Because every flex sensor has a slightly different resistance,
// the 600-900 range may not exactly cover the flex sensor's
// output. To help tune our program, we'll use the serial port to
// print out our values to the serial monitor window:

Serial.print("sensor: ");
Serial.print(flexposition);
Serial.print(" servo: ");
Serial.println(servoposition);
delay(150);

// Note that all of the above lines are "print" except for the
// last line which is "println". This puts everything on the
// same line, then sends a final carriage return to move to
// the next line.

// After you upload the sketch, turn on the serial monitor
// (the magnifying-glass icon to the right of the icon bar).
// You'll be able to see the sensor values. Bend the flex sensor
// and note its minimum and maximum values. If you replace the
// 600 and 900 in the map() function above, you'll exactly match
// the flex sensor's range with the servo's range.







for (position = 0; position <= 180; position += 1)
{
servo1.write(position++); // tell servo to go to position in variable 'pos'
delay(20); // waits 15ms for the servo to reach the position
}

/* for(position = 180; position >= 0; position -= 1)
{
servo1.write(position); // Move to next position
delay(20); // Short pause to allow it to move

}*/



}