Controlling two servos with an ir remote

Projects Programming
1

'''
#include <IRremote.h>
#include <Servo.h>

#define IR_RECEIVE_PIN 9 // IR receiver connected to pin 9

Servo servo1, servo2;
int servo1Pin = 3; // Servo 1 on Pin 3
int servo2Pin = 5; // Servo 2 on Pin 5

// :small_blue_diamond: IR Codes (Your Previously Found Values)
#define UP 0xB946FF00 // Move Forward
#define DOWN 0xEA15FF00 // Move Backward
#define LEFT 0xBB44FF00 // Turn Left
#define RIGHT 0xBC43FF00 // Turn Right
#define REPEAT_SIGNAL 0xFFFFFFFF // Holding button repeat signal

uint32_t lastCommand = 0; // Store last valid command
int servo1_d = 90; // Servo 1 default position
int servo2_d = 90; // Servo 2 default position

unsigned long lastMoveTime = 0; // Track time for smooth movement

IRrecv irrecv(IR_RECEIVE_PIN);
decode_results results;

void setup() {
Serial.begin(9600);
irrecv.enableIRIn(); // Start the IR receiver

servo1.attach(servo1Pin);
servo2.attach(servo2Pin);

servo1.write(servo1_d); // Set to neutral
servo2.write(servo2_d);
}

void loop() {
if (IrReceiver.decode()) {
IrReceiver.printIRResultShort(&Serial);
IrReceiver.printIRSendUsage(&Serial);

    if (IrReceiver.decodedIRData.protocol == UNKNOWN) {
        Serial.println(F("Received noise or an unknown protocol."));
        IrReceiver.printIRResultRawFormatted(&Serial, true);
    }

    Serial.println();
    IrReceiver.resume(); // Enable receiving of the next value

    // Check the received data and perform actions according to the received command
    switch(IrReceiver.decodedIRData.command) {
        case UP: // Start moving up
            unsigned long startTime = millis();
            while (IrReceiver.decode() && IrReceiver.decodedIRData.command == UP) {
                if ((millis() - startTime) % 100 == 0) { // Every 100 ms
                    upMove(1); // Move up 1 degree
                }
            }
            break;

        case DOWN: // Start moving down
            startTime = millis();
            while (IrReceiver.decode() && IrReceiver.decodedIRData.command == DOWN) {
                if ((millis() - startTime) % 100 == 0) { // Every 100 ms
                    downMove(1); // Move down 1 degree
                }
            }
            break;

        case LEFT: // Start moving up
            startTime = millis();
            while (IrReceiver.decode() && IrReceiver.decodedIRData.command == LEFT) {
                if ((millis() - startTime) % 100 == 0) { // Every 100 ms
                    leftMove(1); // Move left 1 degree
                }
            }
            break;

        case RIGHT: // Start moving down
            startTime = millis();
            while (IrReceiver.decode() && IrReceiver.decodedIRData.command == RIGHT) {
                if ((millis() - startTime) % 100 == 0) { // Every 100 ms
                    rightMove(1); // Move right 1 degree
                }
            }
            break;

        // Other cases...
    }
}
delay(5);

}
'''
I'm new to c++ and coding in general. I was wondering how to define the "upMove", "downMove", and etc?

2
  • The first thing you need to do is read the Posting Guidelines.
3

uh ok

4

... and format your code...

paste
paste746×500 15.8 KB

5 
    if (IrReceiver.decode ()) {
        IrReceiver.printIRResultShort (&Serial);
        IrReceiver.printIRSendUsage (&Serial);

        if (IrReceiver.decodedIRData.protocol == UNKNOWN) {
            Serial.println (F ("Received noise or an unknown protocol."));
            IrReceiver.printIRResultRawFormatted (&Serial, true);
        }

        Serial.println ();
        IrReceiver.resume (); // Enable receiving of the next value

        // Check the received data and perform actions according to the received command
        switch (IrReceiver.decodedIRData.command) {
        case UP: // Start moving up
            unsigned long startTime = millis ();
            while (IrReceiver.decode () && IrReceiver.decodedIRData.command == UP) {
                if ( (millis () - startTime) % 100 == 0) { // Every 100 ms
                    upMove (1); // Move up 1 degree
                }
            }
            break;
  • IrReceiver.resul() is typicall called at the end of processing
  • why not just process the same key if it continues to be recognized each iteration of loop() instead of
    while (IrReceiver.decode () && IrReceiver.decodedIRData.command == UP)
  • looks like you only want to repeat some operation every 100 msec, why not just add a 100 msec delay at the end of loop()
6

Thanks, but what would that code look like?

7

are you able to recognize any IR code?
are you able to control a servo?

8

I'm new to coding in c++ with the arduino, but I can understand most code. The servo does work. I have provided the errors that are made with the code.

C:\Users\Ethan Zhang\Downloads\sketch_mar27a\sketch_mar27a.ino: In function 'void loop()':
C:\Users\Ethan Zhang\Downloads\sketch_mar27a\sketch_mar27a.ino:56:25: error: 'upMove' was not declared in this scope
                         upMove(1); // Move up 1 degree
                         ^~~~~~
C:\Users\Ethan Zhang\Downloads\sketch_mar27a\sketch_mar27a.ino:56:25: note: suggested alternative: 'remove'
                         upMove(1); // Move up 1 degree
                         ^~~~~~
                         remove
C:\Users\Ethan Zhang\Downloads\sketch_mar27a\sketch_mar27a.ino:65:25: error: 'downMove' was not declared in this scope
                         downMove(1); // Move down 1 degree
                         ^~~~~~~~
C:\Users\Ethan Zhang\Downloads\sketch_mar27a\sketch_mar27a.ino:65:25: note: suggested alternative: 'pinMode'
                         downMove(1); // Move down 1 degree
                         ^~~~~~~~
                         pinMode
C:\Users\Ethan Zhang\Downloads\sketch_mar27a\sketch_mar27a.ino:74:25: error: 'leftMove' was not declared in this scope
                         leftMove(1); // Move left 1 degree
                         ^~~~~~~~
C:\Users\Ethan Zhang\Downloads\sketch_mar27a\sketch_mar27a.ino:74:25: note: suggested alternative: 'remove'
                         leftMove(1); // Move left 1 degree
                         ^~~~~~~~
                         remove
C:\Users\Ethan Zhang\Downloads\sketch_mar27a\sketch_mar27a.ino:83:25: error: 'rightMove' was not declared in this scope
                         rightMove(1); // Move right 1 degree
                         ^~~~~~~~~
exit status 1

Compilation error: 'upMove' was not declared in this scope
9

The errors are telling you that there are NO FUNCTIONS BY THOSE NAMES! Why? Where are they?

10

please post some code that simply recognizes one IR code

11

I don't know how to make the functions. That's what I'm asking.

12 
#define UP    0xB946FF00  // Move Forward
#define DOWN  0xEA15FF00  // Move Backward
#define LEFT  0xBB44FF00  // Turn Left
#define RIGHT 0xBC43FF00  // Turn Right

Are you talking about this. I don't know how to make the functions like the "upMove".

13

This is a function! setup() is a function. loop() is a function. Search for "arduino function" and see others. Read your "C" documentation.

What have you tried?

14

what do you expect upMove() to do?

15

This code should theoretically work.

//At the start next to the "int servoPins"
int servo1Position = 90;
int servo2Position = 90;

Then after all the other code add:

void upMove(int degrees){
servo1Position += degrees;
servo1.write(servo1Position);
}

void downMove(int degrees){
servo1Position -= degrees;
servo1.write(servo1Position);
}

void rightMove(int degrees){
servo2Position += degrees;
servo2.write(servo2Position);
}

void leftMove(int degrees){
servo2Position -= degrees;
servo2.write(servo2Position);
}

--- Please note that this code assumes that servo 1 is up and down and servo 2 is left and right ---

Please let me know if this is what you were looking for.

16 
void loop()
{
    if (IrReceiver.decode()) {
        unsigned long code = IrReceiver.decodedIRData.decodedRawData;

        if (code)  {
           Serial.println (code, HEX);
        }

        IrReceiver.resume();
    }
}