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 (SunFounder Mega2560 board)
– 1 * USB data cable
– 1 * Joystick PS2 module
– Several jumper wires
Experimental Principle
This module has two analog outputs (corresponding to X 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 the SunFounder Uno board:
| Joystick PS2 | SunFounder Uno |
| GND | GND |
| VCC | 5V |
| X | A0 |
| Y | A1 |
| SW | 8 |
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 8 * 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 swPin = 8; //Bt attach to digital 8void setup() { pinMode(swPin,INPUT); //set btpin as INPUT digitalWrite(swPin, HIGH); //and HIGH Serial.begin(9600); //initialize serial monitor }void loop() { Serial.print(“X: “); //print “X: “ Serial.print(analogRead(xPin),DEC); //read the value of A0 and print it in decimal Serial.print(“|Y: “); //print “|Y: “ Serial.print(analogRead(yPin),DEC); //read the value of A1 and print it in decimal Serial.print(“|Z: “); //print “|Z: “ Serial.println(digitalRead(swPin)); //read the value of pin8 and print it delay(500); //delay 500ms } |