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Hi all!

I am building a flight simulator cockpit, and I have three knobs/rotary encoders which I am trying to interface. None of the arduino-native programs designed to interface arduino to fsx work, as they can't communicate with the aircraft I am using. So, I have a different idea:

I would like to program each encoder so that it will send a keystroke when turned. i.e. turning encoder 1 to the left sends "q" and turning encoder 1 to the right sends "a".

I already have a script that uses serial.print to desplay each turn on the serial monitor:

#include "math.h"
#include "Quadrature.h"
Quadrature quad1(2, 3);
Quadrature quad2(4, 5);
Quadrature quad3(6, 7);

long Xold1;// the first encoder "old" reading
long Xold2;// the second encoder "old" reading
long Xold3;// the third encoder "old" reading

void setup() {

void loop() {
  long X1 =(quad1.position());
    if (X1 != Xold1){ 
      if (X1 > Xold1) {Serial.print("D740");}
      if (X1 < Xold1) {Serial.print("D750");}
      Xold1 = X1;     // overwrites the old reading with the new one.
      }//end of quad1 read
long X2 =(quad2.position());
    if (X2 != Xold2){ 
      if (X2 > Xold2) {Serial.print("D760");}
      if (X2 < Xold2) {Serial.print("D770");}
      Xold2 = X2;     // overwrites the old reading with the new one.
      }//end of quad2 read

long X3 =(quad3.position());
    if (X3 != Xold3){ 
      if (X3 > Xold3) {Serial.print("D780");}
      if (X3 < Xold3) {Serial.print("D790");}
      Xold3 = X3;     // overwrites the old reading with the new one.
      }//end of quad3 read

If this program could be used at all, that would be great as well.

Thanks in advance!


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If you don't mind to do simple simple circuit like :
That way the Direction decode done by hardware

1. Let's name each output as : 'Negative' and 'Positive' respectively
2. Let's name each set (encoder+circuit) as :
a. Yaw
b. Pitch
c. Roll
3. Use of PinChangeInt
4. Here is what in my mind

#include <PinChangeInt.h>
#define PinYawPos 3
#define PinYawNeg 4
#define PinPitchPos 6
#define PinPitchNeg 7
#define PinRollPos 6
#define PinRollNeg 7
void setup() {
    pinMode(PinYawPos, INPUT);
    digitalWrite(PinYawPos, HIGH);
    PCintPort::attachInterrupt(PinYawPos, YawPos, CHANGE);

    pinMode(PinYawNeg, INPUT);
    digitalWrite(PinYawNeg, HIGH);
    PCintPort::attachInterrupt(PinYawNeg, YawNeg, CHANGE);

    pinMode(PinPitchPos, INPUT);
    digitalWrite(PinPitchPos, HIGH);
    PCintPort::attachInterrupt(PinPitchPos, PitchPos, CHANGE);

    pinMode(PinPitchNeg, INPUT);
    digitalWrite(PinPitchNeg, HIGH);
    PCintPort::attachInterrupt(PinPitchNeg, PitchNeg, CHANGE);

    pinMode(PinRollPos, INPUT);
    digitalWrite(PinRollPos, HIGH);
    PCintPort::attachInterrupt(PinRollPos, RollPos, CHANGE);

    pinMode(PinRollNeg, INPUT);
    digitalWrite(PinRollNeg, HIGH);
    PCintPort::attachInterrupt(PinRollNeg, RollNeg, CHANGE);

    Serial.println("Yaw Pitch Roll");

void loop(){}
void YawPos(){
void YawNeg(){
void PitchPos(){
void PitchNeg(){
void RollPos(){
void RollNeg(){

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