Joystick module with Arduino Mega 2560 R3

Wiring for the Analog joystick (KY-023) on the Arduino Mega 2560 R3 (ATmega2560, 5 V logic), chosen with the same pin rules BoardPilot uses: default buses first, and no pins that are used for flash, USB, the debugger or booting.

Wiring

Joystick module pin	Role	Arduino Mega 2560 R3 pin	Notes
GND	Ground	GND
+5V	Power	3.3V	Connect to 3V3 anyway, so the outputs stay within the ADC range
VRX	Analog output	A0 (PF0)
VRY	Analog output	A1 (PF1)
SW	Output from the part	22 (PA0)	Button: LOW when pressed. Use INPUT_PULLUP

Check before you power it on

Supply: 3.3 V from the 3.3V pin.
The Joystick module is a 3.3 V part and the Arduino Mega 2560 R3 uses 5 V signals. Power it from 3.3 V and put a level shifter on the signal wires, or buy a 5 V version of the module.

Test code (Arduino)

void setup() {
  Serial.begin(115200);
}

void loop() {
  long mv = (long)analogRead(54) * 5000L / 1023;  // VRX on A0
  Serial.println(mv);
  delay(200);
}

Arduino board: arduino:avr:mega.

Questions

Which Arduino Mega 2560 R3 pins do I use for the Joystick module?

GND → GND, +5V → 3.3V, VRX → A0 (PF0), VRY → A1 (PF1), SW → 22 (PA0).

Does the Joystick module work with the Arduino Mega 2560 R3 at 5 V?

The Joystick module is a 3.3 V part and the Arduino Mega 2560 R3 uses 5 V signals. Power it from 3.3 V and put a level shifter on the signal wires, or buy a 5 V version of the module.

BoardPilot checks this wiring in 3D as you build it, and finds crossed or missing wires on the real board.

Download BoardPilot

Full Arduino Mega 2560 R3 pinout · Analog joystick (KY-023): all pins and data

The Joystick module on other boards

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