Joystick with switch control for Arduino Uno R3 will not display switch push

Question

I am trying to get my code to show a switch input from a joystick on an Arduino Uno.

When I view it on the serial monitor, I see the x and y axis being displayed when I move the joystick.

When I click it I do not get anything to show up. I have the switch set to pin 2 on the Arduino.

There are no errors when I compile the code.

int pin_x = A0; 
int position_x = 0;
int pin_y = A1;
int position_y = 0;
int pin_z = 2; // switch pin
int position_z = LOW;

void setup() {
    Serial.begin(9600);   // initialize serial communications at 9600 bps
    pinMode(pin_x, INPUT);  // set pin mod as INPUT
    pinMode(pin_y, INPUT);
    pinMode(pin_z, INPUT);  // switch pin
}
void read(){
    position_x = analogRead(pin_x);
    position_y = analogRead(pin_y);
    position_z = digitalRead(pin_z);
}
void show(){
Serial.print(" X:");  //print information to Serial Monitor 
Serial.print(position_x);
Serial.print(" Y:");
Serial.print(position_y);
Serial.print(" Z:");
Serial.print(position_z);
}
void loop() {
  read();
  show();
  delay(500); 
}

did you ensure the switch is working and connected correctly? — Piglet, Oct 23 '19 at 06:34
I did make sure to check that. The switch works properly and the wire is connected to the correct pin. — BoatingPuppy, Oct 23 '19 at 10:15
I tested continuity with the switch pushed and released, but I have not tested voltage yet. It is running off the 5v pin. I will have to check the voltage to see what its output is — BoatingPuppy, Oct 23 '19 at 23:01

score 0 · Answer 1 · answered Oct 23 '19 at 07:30

There are several methods you could use to find the error, here are a couple suggestions:

read the datasheet of your joystick
use a multimeter to check conductivity of the two switch pins
hook something else to your switch input, check that the input is working

That said, the way your code is written it expects your switch pin to be connected to Vcc, check if that is really the case.

score 0 · Answer 2 · answered Oct 23 '19 at 07:53

Try this:

void setup() {
   Serial.begin(9600);   // initialize serial communications at 9600 bps
   pinMode(pin_x, INPUT);  // set pin mod as INPUT
   pinMode(pin_y, INPUT);
   pinMode(pin_z, INPUT);  // switch pin
   digitalWrite(pin_z, HIGH);
}

Otherwise code looks correct. The switch on a Joystick is indeed digital, while the others are analog, you got that right.

Here's a video on how to work with joysticks, maybe it helps: https://www.youtube.com/watch?v=MlDi0vO9Evg

Joystick with switch control for Arduino Uno R3 will not display switch push

2 Answers2