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Built-in project · Arduino Uno R3

Joystick on A0, A1 and pin 8, on an Arduino Uno

A joystick module with X on A0, Y on A1 and its switch on pin 8 (internal pull-up): the sketch prints both axes and whether the stick is pressed. The whole build, an Arduino Uno and 1 more part, runs here in your browser on the firmware below; open it in the editor to change the wiring or the code and run it again.

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Joystick on A0, A1 and pin 8 · Arduino Uno R3live0.000 s 0.00x
Drag the joystick
The circuit itself, running here on the simulator. Press what can be pressed; click anything else to open it in the editor.

The code

The firmware exactly as the editor opens it. Change a line there and press Run: it compiles in the browser.

sketch.ino · Arduino Uno R3
// A joystick: X on A0, Y on A1, the press switch on pin 8.
//
//   VCC -> 5V   GND -> GND   VRx -> A0   VRy -> A1   SW -> pin 8
//
// Each axis is a potentiometer: centered it reads about 512, pushed to the
// ends near 0 or 1023. The switch joins SW to ground when the stick is
// pressed, so pin 8 uses the internal pull-up and reads LOW while pressed.
//
// Drag the stick, or click it.

const int X_PIN = A0;
const int Y_PIN = A1;
const int SW_PIN = 8;

void setup() {
  pinMode(SW_PIN, INPUT_PULLUP);
  Serial.begin(9600);
  Serial.println("Mokxi Uno: joystick on A0, A1 and pin 8");
}

void loop() {
  Serial.print("X: ");
  Serial.print(analogRead(X_PIN));
  Serial.print("  Y: ");
  Serial.print(analogRead(Y_PIN));
  Serial.print("  Z: ");
  Serial.println(digitalRead(SW_PIN) == LOW ? "pressed" : "up");
  delay(500);
}

Parts list

3 parts, plus the jumper wires. Every one is in the editor's parts bin.

How it is wired

5 connections, pin by pin, read from the circuit itself. Each line is one set of pins joined together, by a jumper wire or a breadboard strip.

  • Ground: Arduino Uno R3 pin GND; Thumb stick pin GND
  • Arduino Uno R3 pin 8; Thumb stick pin SW
  • Arduino Uno R3 pin 5V; Thumb stick pin VCC
  • Arduino Uno R3 pin A0; Thumb stick pin VRX
  • Arduino Uno R3 pin A1; Thumb stick pin VRY

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Open it in the editor, change the circuit or the code, and keep your version in a free account.

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