Introduction
An infrared-receiver is a component which receives infrared signals and can independently receive infrared ray and output signals compatible with TTL level. It’s similar with a normal plastic-packaged transistor in size and it is suitable for all kinds of infrared remote control and infrared transmission.
Components
– 1 * SunFounder Uno board
– 1 * USB data cable
– 1 * Infrared-receiver module
– 1 * Remote controller
– 1 * 3-Pin anti-reverse cable
Experimental Principle
Control a certain key (for example, Power key) via a remote controller by programming. When you press the key, infrared rays will be emitted from the remote control and received by the infrared receiver, and the LED on the SunFounder Uno board will light up. Connect an LED to pin 13 on the SunFounder Uno board so that you can see remotely whether the Power key is pressed down.
Experimental Procedures
Step 1: Build the circuit
Step 2: Program (Please refer to the example code in LEARN -> Get Tutorials on our website)
Note: Here you need to add a library. Refer to the description in Lesson 4 previously in the manual.
Step 3: Compile the code
Step 4: Upload the sketch to the SunFounder Uno board
Now, press the Power key of a remote control, and both the LED attached and that connected to pin 13 on the SunFounder Uno board will light up. Then press any other key, and the LEDs will go out.
Code
| /*********************************************** * name:Infrared-Receiver * function:press the Power key of a remote control, * and both the LED attached and that connected to pin 13 on the SunFounder Uno board will light up. * Then press any other key, and the LEDs will go out. **********************************************/ //Email: support@sunfounder.com //Website: www.sunfounder.com #include <IRremote.h>const int irReceiverPin =7; //the SIG of receiver module attach to pin7 const int ledPin = 13;//pin 13 built-in ledIRrecv irrecv(irReceiverPin); //Creates a variable of type IRrecv decode_results results;void setup() { pinMode(ledPin,OUTPUT);//set ledpin as OUTPUT Serial.begin(9600);//initialize serial irrecv.enableIRIn(); //enable ir receiver module }void loop() { if (irrecv.decode(&results)) //if the ir receiver module receiver data { Serial.print(“irCode: “); //print”irCode: “ Serial.print(results.value, HEX); //print the value in hexdecimal Serial.print(“, bits: “); //print” , bits: “ Serial.println(results.bits); //print the bits irrecv.resume(); // Receive the next value } delay(600); //delay 600ms if(results.value == 0xFFA25D)//if receiver module receive 0xFFA25D { digitalWrite(ledPin,HIGH);//turn on the led } else { digitalWrite(ledPin,LOW);//turn off the led } } |