Connection diagram.
- arduino.gif (17.97 KiB) Viewed 4189 times
Key codes for this remote controller:
Code: Select all
#define IR_POWER 0xFFA25D
#define IR_MODE 0xFF629D
#define IR_MUTE 0xFFE21D
#define IR_PLAY 0xFF22DD
#define IR_BACKWD 0xFF02FD
#define IR_FORWD 0xFFC23D
#define IR_EQ 0xFFE01F
#define IR_MINUS 0xFFA857
#define IR_PLUS 0xFF906F
#define IR_LOOP 0xFF9867
#define IR_USD 0xFFB04F
#define IR_0 0xFF6897
#define IR_1 0xFF30CF
#define IR_2 0xFF18E7
#define IR_3 0xFF7A85
#define IR_4 0xFF10EF
#define IR_5 0xFF38C7
#define IR_6 0xFF5AA5
#define IR_7 0xFF42BD
#define IR_8 0xFF4AB5
#define IR_9 0xFF52AD
#define IR_HOLD 0xFFFFFFFF
Sample code:
Code: Select all
/*
SparkFun Electronics 2010
Playing with IR remote control
IR Receiver TSOP382: Supply voltage of 2.5V to 5.5V
With the curved front facing you, pin 1 is on the left.
Attach
Pin 1: To pin 2 on Arduino
Pin 2: GND
Pin 3: 5V
This is based on pmalmsten's code found on the Arduino forum from 2007:
http://www.arduino.cc/cgi-bin/yabb2/YaBB.pl?num=1176098434/0
This code works with super cheapo remotes. If you want to look at the individual timing
of the bits, use this code:
http://www.arduino.cc/playground/Code/InfraredReceivers
This code clips a lot of the incoming IR blips, but what is left is identifiable as key codes.
*/
int irPin = 2; //Sensor pin 1 wired to Arduino's pin 2
int statLED = 13; //Toggle the status LED every time Power is pressed
int start_bit = 2200; //Start bit threshold (Microseconds)
int bin_1 = 1000; //Binary 1 threshold (Microseconds)
int bin_0 = 400; //Binary 0 threshold (Microseconds)
void setup() {
pinMode(statLED, OUTPUT);
digitalWrite(statLED, LOW);
pinMode(irPin, INPUT);
Serial.begin(9600);
Serial.println("Waiting: ");
}
void loop() {
int key = getIRKey(); //Fetch the key
if(key != 0) //Ignore keys that are zero
{
Serial.print("Key Recieved: ");
switch(key)
{
case 144: Serial.print("CH Up"); break;
case 145: Serial.print("CH Down"); break;
case 146: Serial.print("VOL Right"); break;
case 147: Serial.print("VOL Left"); break;
case 148: Serial.print("Mute"); break;
case 165: Serial.print("AV/TV"); break;
case 149:
Serial.print("Power");
if(digitalRead(statLED) != 1) //This toggles the statLED every time power button is hit
digitalWrite(statLED, HIGH);
else
digitalWrite(statLED, LOW);
break;
default: Serial.print(key);
}
Serial.println();
}
}
int getIRKey() {
int data[12];
int i;
while(pulseIn(irPin, LOW) < start_bit); //Wait for a start bit
for(i = 0 ; i < 11 ; i++)
data[i] = pulseIn(irPin, LOW); //Start measuring bits, I only want low pulses
for(i = 0 ; i < 11 ; i++) //Parse them
{
if(data[i] > bin_1) //is it a 1?
data[i] = 1;
else if(data[i] > bin_0) //is it a 0?
data[i] = 0;
else
return -1; //Flag the data as invalid; I don't know what it is! Return -1 on invalid data
}
int result = 0;
for(i = 0 ; i < 11 ; i++) //Convert data bits to integer
if(data[i] == 1) result |= (1<<i);
return result; //Return key number
}
Datasheet:
TSOP18.pdf- (133.26 KiB) Downloaded 598 times