Leonardo and infrared

Using Arduino Programming Questions
1

I'm trying to put together a specialized tv remote using an Arduino Leonardo, my project requires HID capabilities hence the Leonardo. At the moment I'm trying to figure out the signals I am going to be sending to the tv so I have an IR receiver.
The receiver is in a breadboard,
ground -> A1
VCC in A3
output in A5.
From the breadboard I have jumpers going
B1 -> Leo. ground
B3 -> Leo. 5v
B5 -> Leo. 13

Then I have the following sketch. When I shoot a tv remote into the receiver, nothing gets displayed in the serial monitor. Does anyone have any ideas what I'm doing wrong? I know every tutorial I see uses an Arduino Uno, is that the problem? Can the Leonardo can't do this?

// Include IR Remote Library by Ken Shirriff
#include <IRremote.h>

// Define sensor pin
const int RECV_PIN = 13;

// Define IR Receiver and Results Objects
IRrecv irrecv(RECV_PIN);
decode_results results;

void setup(){
  // Serial Monitor @ 9600 baud
  Serial.begin(9600);
  // Enable the IR Receiver
  irrecv.enableIRIn();
}

void loop(){
  if (irrecv.decode(&results)){
        Serial.println(results.value, HEX);
        switch (results.decode_type){
            case NEC: 
              Serial.println("NEC"); 
              break;
            case SONY: 
              Serial.println("SONY"); 
              break;
            case RC5: 
              Serial.println("RC5"); 
              break;
            case RC6: 
              Serial.println("RC6"); 
              break;
            case DISH: 
              Serial.println("DISH"); 
              break;
            case SHARP: 
              Serial.println("SHARP"); 
              break;
            case JVC: 
              Serial.println("JVC"); 
              break;
            /*case SANYO: 
              Serial.println("SANYO"); 
              break;
            case MITSUBISHI: 
              Serial.println("MITSUBISHI"); 
              break;*/
            case SAMSUNG: 
              Serial.println("SAMSUNG"); 
              break;
            case LG: 
              Serial.println("LG"); 
              break;
            case WHYNTER: 
              Serial.println("WHYNTER"); 
              break;
            /*case AIWA_RC_T501: 
              Serial.println("AIWA_RC_T501"); 
              break;*/
            case PANASONIC: 
              Serial.println("PANASONIC"); 
              break;
            case DENON: 
              Serial.println("DENON"); 
              break;
          default:
            case UNKNOWN: 
              Serial.println("UNKNOWN"); 
              break;
          }
        irrecv.resume();
 }
}
2

Try a pin other than 13.

#include <IRremote.h>

// Define sensor pin
const int RECV_PIN = 12;
IRrecv irrecv(RECV_PIN);
decode_results results;

void setup()
{
  Serial.begin(9600);
  while(!Serial);
  Serial.print"OK OK \r\n\r\n";
  irrecv.enableIRIn();
}
3

I did try pin 4 at first and had the same result.

4

Did you change the declarations and setup() as I posted?

5

I did and all I get in the serial monitor is "OK OK"

6

So it's clear that Serial Monitor is working.
I suppose your remote corresponds to one of those listed?

7

Do you mean in the switch cases? I don't know, That's one thing I'm trying to figure out. Even if it isn't, wouldn't I still see the signal via the results.value?

8

There are CASEs for several and an UNKNOWN.

What if you make an addition to loop ()
so you can see if anything made it in --

void loop()
{
  if (irrecv.decode(&results))
  {
    Serial.println("Got something");   // Anything at all??
    Serial.println(results.value, HEX);
9

Tried and nothing showed up.

10

Tried a LED+resistor on the IRreceiver's output to see if it's working?
Try that between Out and Gnd?

11

When I place the LED+resistor between Out and Gnd, it's On and blinks Off a little with a remote pushbutton active.
When placed between +5 and Out, it's Off and blinks On with a remote pushbutton active.
With that you can make a determination as to whether your remote and the Rcvr are compatible and operating.

12

I rigged this up with an ESP32 - and it worked.
I don't see the Leonardo (or any peculiarities) as a Blocker.
What IR receiver are you using (is it a 3-pin unit) ?

13

Just try the ReciveDemo example :slight_smile:

14

Thank you both of you! I finally figured out that the diagram included in the package had the signal pin and the VCC pin flipped. I didn't think getting the receiver to work was suppose to be difficult, looks like I was right, just had the wrong information.

15

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