Coding a DF player & servo with IR remote

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1

Hi! I am currently working on a project that requires a servo and a DF player to both be operated with an IR remote. Based on stuff I found on the web, I got a good running code for getting the servo to work, but whenever I add in the appropriate codes for the DF player I get no luck. Below is the current code I am using. ANY help would be greatly appreciated! Thanks!

include <IRremote.h>

include <Servo.h>

Servo myservo;
int RECV_PIN = 11;
IRrecv irrecv(RECV_PIN);
decode_results results;
void setup() { myservo.attach(9); Serial.begin(9600); irrecv.enableIRIn(); // Start the receiver }
void loop() { if (irrecv.decode(&results)) { String s = String(results.value, HEX); if(s != "ffffffff"){ Serial.println(s); }
if(s == "ff22dd"){
myservo.write(2370); // set servo counter clockwise

}
else if(s == "ffc23d"){
myservo.write(570); // set servo clockwise
}
else if(s == "ff02fd"){
myservo.write(1420); // set servo to mid-point
}
//Serial.println(results.value, HEX);
irrecv.resume(); // Receive the next value
} }

2

Hi Matthew,

Does this code compile? The following line has a problem:

void setup() { myservo.attach(9); Serial.begin(9600); irrecv.enableIRIn(); // Start the receiver }

The comment "// Start the receiver" will also comment-out the closing brace }

Pat.

3

Yeah it compiled just fine. I went and double checked-in the code it is a separate line, when I copied and pasted here it got deleted. The servo works via the remote, now it's just getting sound to work.

4

Hi Matthew,

What exactly are you trying to do with the sound?

Are there separate IR codes to control the sounds or are they initiated with the servo movements?

Pat.

5

The functions are not related. At the moment, when I click the arrows on the remote the servo moves back and forth perfectly. I would like to program it so that when I click one of the various number buttons on the remote it plays a sound.

I am using it for a full scale model of Wall-E. The servo moves the head and the sounds are the various noises he makes. Again, thanks for your help!

6

Hi Matthew,

What??? You didn't try to make a BB-8? I guess Wall-E is a better choice, though. Loved that movie.

Start by adding additional:

else if(s == "xxxxx"){ 
...
}

lines for each of the appropriate buttons. In the { ... }, add the commands to stop playing the existing file, if playing, and then start the one you want.

Are you familiar with how to use the DF Player library ?

Pat.

7

Also... do you have the appropriate libraries installed?

This and this?

8

Hi Matthew,

The code you're looking for is something like this:

#include <DFPlayer_Mini_Mp3.h>

...

if(s == "xxxxxx") {
  mp3_play (1);  // play file "0001.mp3" in the folder "mp3"
}

if(s == "xxxxxx") {
  mp3_play (2);  // play file "0002.mp3" in the folder "mp3"
}

if(s == "xxxxxx") {
  mp3_play (3);  // play file "0003.mp3" in the folder "mp3"
}