Servo Motor Controlling with Flex Sensors

Hi everyone,

Our works continuing from analog control units like potentiometer to another one flex sensors. Main concept of the flex sensor is same as the potentiometer, different positions is different resistance values. We will read these resistance values using analog pins of Arduino, and of course analog read command.

Today we will control the servo motor with another way, flex sensor.

As you can see on picture above, at left there are flex sensor with protection resistor. After reading the flex sensor we will control the servo motor at right side of picture.

For the flex sensor, it have very small resistance value at upright position, if the slope will increase resistance will be increase depending on gradual shape of own.

On the other hand, flex sensor is work at one direction. This means if you bend it other side, it will not work. For this reason, you should use it straight.

Another subject is price of this sensor, because of the high price you can manufacture own flex sensor :

http://www.imagesco.com/articles/flex/sensor-pg1.html

If we continue, lets combine pieces together.

You can see gradual shape of flex sensor.

After the connection, lets focused on Arduino code.

If we look at the code, we will see there is no difference between servo motor control with potentiometer work.

You can reach the code directly,

Servo motor control with Flex sensor
//M.Furkan BAHAT

#include   // Servo kütüphanesini ekliyoruz.
const int pot=A0;   // Esneklik sensörünü bağlayacağımız analog giriş.
Servo myservo;      // Bu komutla servo kontrol nesnemizi oluşturduk.
int flexdurum=0;     
int pos = 0;       

void setup(){
  myservo.attach(9); // Servomuzu bağlayacağımız pini belirledik.
} 
void loop(){
  flexdurum=analogRead(pot);
  pos= map(flexdurum,0,1023,0,180);//Sensörden okunan değeri  180e oranlıyoruz.
  { 
    myservo.write(pos); // Yukarıdaki oranladığımız değeri servoya yazdırıyoruz.
  }
}

Here is the work video: