KY-023 Dual Axis Joystick Module

KY-023 Arduino joystick module, it uses a biaxial potentiometer to control the X and Y axis. When pushed down, it activates a switch. Based on the PS2 controller's joystick, it's used to control a wide range of projects from RC vehicles to color LEDs.

Arduino joystick module KY-023 consists of two potentiometers 10k perpendicularly placed to control the X and Y axes by changing resistance when moving the joystick. A push button is activated when the joystick is pushed down on the Z axis.

We'll use a couple of analog pins on the Arduino to read the values from the joystick's potentiometers and a digital pin to read values from the switch.

The following Arduino sketch will continually read values from the joystick's button and potentiometers. Moving the joystick up/down will increase/decrease the values of X and moving the joystick left/right will increase/decrease for values of Y, these values range between 0 and 1023. Push the joystick down to activate the Z-axis button.

int value = 0;

void setup() {
	//pinMode(A0, INPUT);
	//pinMode(A1, INPUT);
  	pinMode(7, INPUT_PULLUP); //set pin 7 as an input and enable the internal pull-up resistor
	Serial.begin(9600);
}

void loop() {
  value = analogRead(A0);	// read X axis value [0..1023]
  Serial.print("X:");
  Serial.print(value, DEC);

  value = analogRead(A1);	// read Y axis value [0..1023]
  Serial.print(" | Y:");
  Serial.print(value, DEC);

  value = digitalRead(7);	// read Button state [0,1]
  Serial.print(" | Button:");
  Serial.println(value, DEC);

  delay(100);
}

Setting analog pins as input (line 4 and 5) is not really necessary, the analogRead() function will automatically set the pins A0 and A1 as analog input when called. Some people prefer to explicitly declare analog pins as input for the sake of readability.

• Fritzing Part: KY-023 Dual Axis Joystick Module.
• Fritzing Official Site.