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Axiometa

IR Receiver

IR Receiver

AX22-0033

$2.99
$2.99
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Add remote-control input to any AX22 build in seconds. This board hosts a IRM-V538M3/TR138 kHz IR demodulator on a compact 22 × 22 mm PCB, giving your microcontroller a clean, decoded active-low pulse stream that’s immune to ambient light and power-line noise. A status LED is already fitted, so you can plug straight into an Arduino IDE, IRemote sketch, a MicroPython pulse-in decoder, or a MicroBlocks “IR Receiver” block with zero extra parts.

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  • Technical Details

    - 22 mm × 22 mm square
    - 4× ⌀2.7 mm Mounting Holes
    - 38 kHz carrier, demodulated digital output
    - 3.3 V, 5.0 V
    - Typical range 30 m indoors
    - High ambient-light immunity & AGC filtering
    - Arduino IDE Compatible
    - MicroPython Compatible
    - MicroBlocks Compatible

    Material Datasheet 

  • Pinout

  • Interface

PCB Design

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Arduino Example Code

example.ino 
#include "esp32-rmt-ir.h"

void irReceived(irproto brand, uint32_t code, size_t len, rmt_symbol_word_t *item){
	if( code ){
		Serial.printf("IR %s, code: %#x, bits: %d\n",  proto[brand].name, code, len);
	}
	
	if(true){//debug
		Serial.printf("Rx%d: ", len);							
		for (uint8_t i=0; i < len ; i++ ) {
			int d0 = item[i].duration0; if(!item[i].level0){d0 *= -1;}
			int d1 = item[i].duration1; if(!item[i].level1){d1 *= -1;}
			Serial.printf("%d,%d ", d0, d1);
		}								
		Serial.println();
	}
  
}

void setup() {
	Serial.begin(115200);
	irRxPin = 15;
	irTxPin = 4;
	xTaskCreatePinnedToCore(recvIR, "recvIR", 4096, NULL, 10, NULL, 1);
}

void loop() {
	sendIR(NEC, 0xC1AAFC03, 32, 1, 1); //protocol, code, bits, bursts, repeats
	delay(1000);
	sendIR(SONY, 0x3e108, 20, 1, 1); //protocol, code, bits, bursts, repeats
	delay(1000);
}

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