Arduino – Analog Joystick Module and Controlling Servo Motor

Pin Configuration

Analog value on each axis

Materials Required

• Arduino UNO Board
• Joystick HW-504 or KY-023
• Jumper cables
• USB A/B cable for connecting arduino to computer

Circuit Diagram

The connection of the joystick is very simple as we just have to connect VRx and VRy to ADC pins of microcontroller and the switch pin to digital pin of microcontroller.

Arduino Sketch

/* This code is to read the analog values from the jopystick */
/* www.tastytechharbour.com */

int axis_xpin = A1; // The output pins from the joystick is always analog and also its a voltage output.
int axis_ypin = A2; // This can only be measured from the analog pins on the Arduino UNO board. There are 6 analog pins on 
int pushbutton = 4; // Arduino pin you can configure any of the analog pins. 
                    // Push button is connected to digital pin because its output is high or low hence we read it from the 
                    // digital pins.

void setup() {
  // put your setup code here, to run once:
  pinMode(pushbutton,INPUT_PULLUP);
  Serial.begin(9600);

}

void loop() {
  // put your main code here, to run repeatedly:
  int axis_x_val = analogRead(axis_xpin);
  int axis_y_val = analogRead(axis_ypin);
  int buttonPressed = digitalRead(pushbutton);

  Serial.print("Y axis/Vertical movement of stick values are :");
  Serial.print(axis_y_val);
  Serial.print("   X axis/horizontal movement of stick values are :" );
  Serial.print(axis_x_val);
  Serial.print("   Button Pressed :");
  Serial.println(!buttonPressed);
}

Application

1. Gimbal Control for Camera
2. Gamepad
3. Analog input to machines
4. Robot control – Example: Car, Robot arm etc.
5. Used in prototype projects
6. DIY Project

Controlling the Servo motor using Joystick with Arduino

Check out the video below for more visual explanation,

Arduino Sketch

/* This code is to read the analog values from the joystick and using map function to control the Servo motor  */
/* www.tastytechharbour.com */

int axis_xpin = A1;
int axis_ypin = A2;
int servo_Left = 3; 
int servo_Right = 5; 

#include <Servo.h>

Servo Servo1;
Servo Servo2;


void setup(){
  Servo1.attach(servo_Left);
  Servo2.attach(servo_Right);
  Serial.begin(9600);
   
}

void loop(){
  int axis_x_val = analogRead(axis_xpin);
  int axis_y_val = analogRead(axis_ypin);
  int ServoPWN_x = map(axis_x_val,0 , 1023, 10,170);
  int ServoPWM_y = map(axis_y_val, 0 ,1023,10,170);
  Serial.print("Y axis/Vertical movement of stick values are :");
  Serial.print(axis_y_val);
  Serial.print("   X axis/horizontal movement of stick values are :" );
  Serial.print(axis_x_val);
  Servo1.write(ServoPWN_x);
  Servo2.write(ServoPWM_y);
  
}