Published October 24, 2018 © GPL3+

TV Remote for Speakers - IR Translator

Use your TV's IR remote to control the volume and mute of separate speakers without using the speaker's remote.

IntermediateShowcase (no instructions)7,859

Things used in this project

Hardware components

Arduino Nano R3

IR (Infrared) Receiver Sensor - TSOP38238

Super-bright 5mm IR LED - 940nm

Blue LED

USB Pigtail

Resistor 220 ohm

Hand tools and fabrication machines

Soldering iron (generic)

Hot glue gun (generic)

Story

The code allows you to use your TV's IR remote control Vol Up, Vol Down, and Mute buttons to control speakers that come with their own IR remote. It's a pain to keep 2 remotes at hand.

I used hot glue to mount the Nano between the grill and speaker.

The blue led and IR Rcvr face the user, while the IR Led faces backward towards the speakers' IR remote sensor.

Space was tight, and you can see from picture I used creative soldering to place the components. I used a USB cable plugged into a USB port on the TV to power the board, and with one end removed, I soldered the Black (GND) and Red (+5VDC) USB wires directly to the 5V & GND inputs of the Nano.

Code

#include <IRLibSendBase.h>
#include <IRLibDecodeBase.h> // First include the decode base
#include <IRLib_P01_NEC.h>
#include <IRLibCombo.h>
#include <IRLibRecv.h>
IRdecodeNEC myDecoder; // Now declare an instance of that decoder.
IRsend mySender;       //pin 3 is set aas IR LED transmitter output by IRLibSendBase.h
IRrecv myReceiver(2); //pin number for the receiver

void setup() {
  myReceiver.enableIRIn(); //Start the receiver
  pinMode(4, OUTPUT); //BLUE LED CONNECTED TO PIN 4
  pinMode(13, OUTPUT);
  digitalWrite(13, LOW);
}

void loop() {
  digitalWrite(4, LOW);
  if (myReceiver.getResults()) {
    if (myDecoder.decode()) {
      switch (myDecoder.value) {
        case 0xFF827D: mySender.send(NEC, 0x8E7906F, 0); //if rcv TV VOL UP, send SPKR VOL UP
          delay(25);
          digitalWrite(4, HIGH); // 1st BLUE LED BLINK
          delay(200);
          digitalWrite(4, LOW);
          delay(25);
          mySender.send(NEC, 0x8E7906F, 0); //resend SPKR VOL UP
          delay(25);
          digitalWrite(4, HIGH); // 2nd BLUE LED BLINK (2 BLINKS FOR VOL UP)
          delay(200);
          digitalWrite(4, LOW);
          break; 

        case 0xFFA25D: mySender.send(NEC, 0x8E730CF, 0); //if rcv TV VOL DOWN, send SPKR VOL DOWN
          delay(25);
          digitalWrite(4, HIGH); // 1 BLUE BLINK FOR VOL DOWN
          delay(200);
          digitalWrite(4, LOW);
          delay(25);
          mySender.send(NEC, 0x8E730CF, 0); //resend SPKR VOL DOWN
          delay(25);
          mySender.send(NEC, 0x8E730CF, 0); //resend SPKR VOL DOWN
          delay(25);
          break; 

        case 0xFF12ED: mySender.send(NEC, 0x8E700FF, 0); //if rcv TV MUTE, send SPKR MUTE
          delay(25);
          digitalWrite(4, HIGH); // LONG BLUE BLINK FOR MUTE ACKNOWLEDGED
          delay(800);
          break;
      }
    }

    delay(200);
    digitalWrite(4, LOW);
    myReceiver.enableIRIn(); //Re-enable rcvr after sending
  }
}

#include <IRLibSendBase.h>
#include <IRLibDecodeBase.h> // First include the decode base
#include <IRLib_P01_NEC.h>
#include <IRLibCombo.h>
#include <IRLibRecv.h>
IRdecodeNEC myDecoder; // Now declare an instance of that decoder.
IRsend mySender;       // Pin 3 set as IR LED by IRLibSendBase.h
IRrecv myReceiver(2); // Pin 2 is IR receiver

void setup() {
  myReceiver.enableIRIn(); //Start the receiver
  pinMode(4, OUTPUT); // Pin 4 is BLUE LED for visual confirmation of "IR command sent"
  pinMode(13, OUTPUT);
  digitalWrite(13, LOW);
}

void loop() {
  digitalWrite(4, LOW);
  if (myReceiver.getResults()) {
    if (myDecoder.decode()) {
      switch (myDecoder.value) {
        case 0xFF827D: mySender.send(NEC, 0x8E7906F, 0); //if rcv TV VOL UP, send SPKR VOL UP
          delay(25);
          digitalWrite(4, HIGH); // 1st BLUE LED BLINK
          delay(200);
          digitalWrite(4, LOW);
          delay(25);
          mySender.send(NEC, 0x8E7906F, 0); //resend SPKR VOL UP
          delay(25);
          digitalWrite(4, HIGH); // 2nd BLUE LED BLINK (2 BLINKS FOR VOL UP)
          delay(200);
          digitalWrite(4, LOW);
          break; 

        case 0xFFA25D: mySender.send(NEC, 0x8E730CF, 0); //if rcv TV VOL DOWN, send SPKR VOL DOWN
          delay(25);
          digitalWrite(4, HIGH); // SINGLE BLUE BLINK FOR VOL DOWN
          delay(200);
          digitalWrite(4, LOW);
          delay(25);
          mySender.send(NEC, 0x8E730CF, 0); //resend SPKR VOL DOWN
          delay(25);
          mySender.send(NEC, 0x8E730CF, 0); //resend SPKR VOL DOWN
          delay(25);
          break; 

        case 0xFF12ED: mySender.send(NEC, 0x8E700FF, 0); //if rcv TV MUTE, send SPKR MUTE
          delay(25);
          digitalWrite(4, HIGH); // LONG BLUE BLINK FOR MUTE ACKNOWLEDGED
          delay(800);
          break;
      }
    }

    delay(200);
    digitalWrite(4, LOW);
    myReceiver.enableIRIn(); //Re-enable rcvr after sending
  }
}

Credits

davelook

0 projects • 4 followers

TV Remote for Speakers - IR Translator

Things used in this project

Hardware components

Hand tools and fabrication machines

Story

Schematics

IR translator schematic

Code

TV IR remote to Speaker IR remote code translator

TV IR Remote translator

Credits

davelook

Comments

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TV Remote for Speakers - IR Translator

TV Remote for Speakers - IR Translator

Things used in this project

Hardware components

Hand tools and fabrication machines

Story

Schematics

IR translator schematic

Code

TV IR remote to Speaker IR remote code translator

TV IR Remote translator

Credits

davelook

Comments

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