Lesson 20 Joystick PS2

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Introduction

A joystick is an input device consisting of a stick that pivots on a base and reports its angle or direction to the device it is controlling. Joysticks are often used to control video games and robots. A Joystick PS2 is used here.

Components

– 1 * SunFounder Uno board

– 1 * USB data cable

– 1 * Joystick PS2 module

– 1 * 5-Pin anti-reverse cable

Experimental Principle

This module has two analog outputs (corresponding to and Y coordinates) and one digital output representing whether it is pressed on Z axis.

Experimental Procedures

Step 1: Build the circuit

The wiring between the Joystick PS2 and SunFounder Uno board:

Joystick PS2SunFounder Uno
GNDGND
VCC5V
Bt7
xA0
yA1

Step 2: Program (Please refer to the example code in LEARN -> Get Tutorials on our website)

Step 3: Compile the code

Step 4: Upload the sketch to the SunFounder Uno board

Now, push the joystick and the coordinates of X and Y axes displayed on Serial Monitor will change accordingly; press down the joystick, and the coordinate of Z=0 will also be displayed.

 Code

/*********************************************
* name:Joystick PS2
* function:push the joystick and the coordinates of X and Y axes displayed on Serial Monitor will change accordingly;
* press down the joystick, and the coordinate of Z=0 will also be displayed.
connection:
Joystick PS2 SunFounder Uno R3
GND           GND
VCC           5V
Bt            7
x             A0
y             A1
***********************************************/
//Email: support@sunfounder.com
//Website: www.sunfounder.comconst int xPin = A0; //X attach to A0
const int yPin = A1; //Y attach to A1
const int btPin = 7; //Bt attach to digital 7void setup()
{
  pinMode(btPin,INPUT); //set btpin as INPUT
  digitalWrite(btPin, HIGH); //and HIGH
  Serial.begin(9600); //initialize serial
}void loop()
{
  Serial.print(“X: “);//print “X: “
  Serial.print(analogRead(xPin),DEC); //read the value of A0 and print it in decimal
  Serial.print(“\tY: “); //print “Y: “
  Serial.print(analogRead(yPin),DEC); //read the value of A1 and print it in decimal
  Serial.print(“\tZ: “); //print “Z: “
  Serial.println(digitalRead(btPin)); ////read the value of pin7 and print it
  delay(100);//delay 100ms
}