ArduinoJoystick

Easy to use Library for Arduino Joysticks. Get floating point Numbers between -1.0 and 1.0 (or whatever you like) instead of analogReadings.

Wiring

Arduino	Joystick
5V	5V
GND	GND
A2	VRx
A3	VRy
D2	SW

Depending on your Joystick, you might need a pulldown Resistor on your Arduino D2 Pin.

Example

In your Arduino IDE, paste the following code (alternatively you can open the included example):

#include "JoyStick.h"

JoyStick joystick;

void setup()
{
  joystick.setup();
  Serial.begin(9600);
}

void loop()
{
  joystick.update();
  Serial.println(joystick.getX());   // float between -1.0 and 1.0
  Serial.println(joystick.getY());   // float between -1.0 and 1.0
  if(joystick.isPressed())
  {
    Serial.println("Joystick is pressed!");
  }
  Serial.println("");
  delay(100);
}

Useful functions

[obligatory] The setup. Sets the 3 default (or your Pins) as INPUT. Autocalibration happens afterwards.

JoyStick joystick;
joystick.setup();

[obligatory] Update. Reads, converts and stores values. Has to be called before the getters.

joystick.update();

This sets the minimal and maximal output. Note that a must be negative and b must be positive. I'll probably extend this function in the futute so you can set the Output to whatever you want, i.e. (+2, +0.5). Default : -1.0 , 1.0.

joystick.setOutput(float a, float b);

Getters..

float x = joystick.getX(); // returns the floating point x value
float y = joystick.getY(); // returns the floating point y value
int raw_x = joystick.getRawX(); // returns the integer analogRead x value
int raw_y = joystick.getRawY(); // returns the integer analogRead y value
bool pressed = joystick.isPressd(); // returns true or false. 

Autocalibration. This gets called in joystick.setup(), but i kept it public so it is callable from the Arduino scope. Maybe this is useful for you.

joystick.autoCalibrate();

Offset setter. If your analogReadings wiggle a bit you can increase the offset. Default : 1.

joystick.setOffset(int someInt);