Learning made Ezy
ROBOTICS:
PROJECT-BASED LEARNING
PROJECT:
REMOTE LED LIGHTS
Design
Any string of red, green and blue LEDs can serve as the base of your design.
The concept is fairly straightforward, which is to utilise any IR remote such as your TV or fan to transmit and receive information from your circuit in order to control the lights.
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For simplicity, this circuit here will be built using only a simple LED circuit as the primary purpose is to understand the use of the IR Remote interface
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WARNING:
It is important to bear in mind that larger lights with longer strings of LEDs require a higher power source which exceeds the load of the microcontroller
TAKE EXTREME PRECAUTION WHEN USING HIGHER POWER SOURCES!!
DO NOT USE AC POWER (WALL SOCKETS)
What You Need
Microcontroller
LEDs
Resistor
Jumper Wires
Bread
Board
IR
Receiver
Remote
The Circuit
Created with Fritzing
The Code
Download and install the IR library from https://github.com/z3t0/Arduino-IRremote
#include <IRremote.h>
int RECV_PIN = 8; // the pin where you connect the output pin of the IR receiver
int led1 = 13;
int led2 = 12;
int led3 = 11;
int itsONled[] = {0,0,0,0};
#define code1 16575 //To obtain these codes open the Serial Monitor and
#define code2 41055 // copy the code appears whenever a button is
#define code3 24735 // pressed
IRrecv irrecv(RECV_PIN);
decode_results results;
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void setup()
{
Serial.begin(9600);
irrecv.enableIRIn();
pinMode(led1, OUTPUT);
pinMode(led2, OUTPUT);
pinMode(led3, OUTPUT);
}
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void loop() {
if (irrecv.decode(&results)) {
unsigned int value = results.value;
switch(value) {
case code1:
if(itsONled[1] == 1) {
digitalWrite(led1, LOW);
itsONled[1] = 0;
} else {
digitalWrite(led1, HIGH);
itsONled[1] = 1;
}
break;
case code2:
if(itsONled[2] == 1) {
digitalWrite(led2, LOW);
itsONled[2] = 0;
} else {
digitalWrite(led2, HIGH);
itsONled[2] = 1;
}
break;
case code3:
if(itsONled[3] == 1) {
digitalWrite(led3, LOW);
itsONled[3] = 0;
} else {
digitalWrite(led3, HIGH);
itsONled[3] = 1;
}
break;
}
Serial.println(value);
irrecv.resume();
}
}