Infrared IR remote control รีโมทอินฟาเรดขนาดเล็ก

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สอนการใช้งานบอร์ด Arduino กับ Infrared sensor ใช้งานร่วมกับรีโมท สั่งเปิดปิดไฟ พร้อมโค้ดตัวอย่าง

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The cheapest way to remotely control a device within a visible range is via Infra-Red light. Almost all audio and video equipment can be controlled this way nowadays. Due to this widely spread use the required components are quite cheap, thus making it ideal for us hobbyists to use IR control for our own projects.

The new ultra-thin 38K universal infrared remote control, NEC encoding format 1-21-key remote control, USB port stereo, car MP3, foot bath, lighting, digital photo frame, microcontroller development board, learning board, etc.. 

Feature:

Remote control distance: more than 8 meters

Launch tube infrared wavelength: 940Nm

Crystal: the oscillation frequency of 455 KHz

IR carrier frequency: 38KHz

Encoding: the encoding format of the NEC, upd6122 encoding scheme, the user code 00FF, key coding below picture

Size: 86 * 40 * 6mm

Frequency: 38K

Power supply: CR2025/160mAH

Button: free height is less than 3mm, the force 200-350g, the life of more than 200,000

The Key Value of the 21 Buttons:

Red Button --------0xff00

VOL + --------------0xfe01

FUNC / STOP -----0xfd02

Left 2 Triangle --- 0xfb04

Pause -------------- 0xfa05

Right 2 Triangle -- 0xf906

Down Triangle -----0xf708

VOL- ---------------0xf609

Upward Triangle -- 0xf50a

0 --------------------0xf30c

EQ ------------------0xf20d

ST / REPT ----------0xf10e

1 ---------------------0xef10

2 --------------------0xee11

3 --------------------0xed12

4 --------------------0xeb14

5 --------------------0xea15

6 --------------------0xe916

7 --------------------0xe718

8 --------------------0xe619

9 --------------------0xe51a

โค้ดตัวอย่าง

#include

int RECV_PIN = 11; //define input pin on Arduino

IRrecv irrecv(RECV_PIN);

decode_results results;

void setup()

{

Serial.begin(9600);

irrecv.enableIRIn(); // Start the receiver

}

void loop()

{

if (irrecv.decode(&results))

{

  Serial.println(results.value, HEX);

  irrecv.resume(); // Receive the next value

}

}