2 axis analog joystick

Using Arduino Programming Questions
1

Hi, I am trying to figure out how to get my leonardo to work as a joystick using an x and y analog input from a joystick module I don't have any code to post cause I am kind of lost where to start.

I have been following this indestructible and using the joystick library included in the guide.

Squint.

2

How far did you get in following that Instructable? Did you install the library? Did you upload the test sketch? Did you get any input into the PC?

3

Yep installed library, examples work, just unsure about how to get the joystick pots to send analog signals to my computer.

4 
void loop() {
    Joystick.setXAxis(analogRead(A0)/4);
    Joystick.setYAxis(analogRead(A1)/4);
}
5

Thanks, I'll give it a try. just wondering what does the /4); do?

6

Divides by 4, truncating to an integer result.

7

Dividing by 4 converts the 10-bit output range of analogRead() to match the 8-bit input range of Joystick.setXAxis(). Could also be written as '>>2' (shift right logical by 2 bits).

8

Ahhh I see, thanks a lot for the help, my project is working now and almost done, the joystick has very high sensitivity though is there a way of changing the sensitivity through ardurino and/or create a deadzone for the centerpoint? I have tried calibrating it through windows which has helped find the centerpoint but it's still unreliable at the moment.

9

is there a way of changing the sensitivity through ardurino and/or create a deadzone for the centerpoint?

You really need to post the arduino code for that answer.

10 
#include <Joystick.h>

void setup() {
  pinMode(7, OUTPUT);
  pinMode(9, INPUT_PULLUP);
  pinMode(10, INPUT_PULLUP);
  pinMode(11, INPUT_PULLUP);
  pinMode(12, INPUT_PULLUP);
  Joystick.begin();
}

const int pinToButtonMap = 9;
int lastButtonState[4] = {0,0,0,0};

void loop() {

   Joystick.setXAxis(analogRead(A0)/4);
    Joystick.setYAxis(analogRead(A1)/4);
  for (int index = 0; index < 4; index++)
  {
    int currentButtonState = !digitalRead(index + pinToButtonMap);
    if (currentButtonState != lastButtonState[index])
    {
      Joystick.setButton(index, currentButtonState);
      lastButtonState[index] = currentButtonState;
    }
  }

  delay(25);
}
11

update sensitivity was fine it was just off center I fixed it by changing this:

Joystick.setXAxis(analogRead(A0)/4);
    Joystick.setYAxis(analogRead(A1)/4);

to this:

Joystick.setXAxis(analogRead(A0)/4 +126);
    Joystick.setYAxis(analogRead(A1)/4 +126);

All done and working thanks for the help!

1280×960 269 KB