Code for controlling a Servo motor with Flex Sensor and Arduino.

Arduino_Flex_Sensor_Servo.ino

#include <Servo.h> 

Servo myServo;

const int flexPin = A0; 

void setup() 
{ 
  myServo.attach(11);
} 

void loop() 
{ 
  int flexValue;
  int servoPosition;
  
  flexValue = analogRead(flexPin);
  
  servoPosition = map(flexValue, 800, 900, 0, 180);
  servoPosition = constrain(servoPosition, 0, 180);

  myServo.write(servoPosition);
  
  delay(20);
}