CJMCU-MLX90614 using Arduino

CJMCU-MLX90614.ino

/*
  Software serial to gather information from CJMCU-MLX90614 using an Arduino

 Receives from the hardware serial, sends to software serial.
 Receives from software serial, sends to hardware serial.

 The circuit:
 * RX is digital pin 10 (connect to TX of other device)
 * TX is digital pin 11 (connect to RX of other device)

 */
#include <SoftwareSerial.h>

SoftwareSerial mySerial(10, 11); // RX, TX

void setup() {
  
  // Open serial communications and wait for port to open:
  Serial.begin(9600);
  
  while (!Serial) {
    ; // wait for serial port to connect. Needed for native USB port only
  }

  Serial.println("Start!");
  // set the data rate for the SoftwareSerial port
  mySerial.begin(9600);
}

int count = 0;
char inBytes[9] = {0};
bool isHeader1 = false;

void loop() {
  if (mySerial.available()) {
    char inByte = mySerial.read();
    if (isHeader1 == false && inByte == 0x66) {
      isHeader1 = true;
      count = 0;
      Serial.println("*");
    } else if (isHeader1 == true && inByte == 0x66) {
      isHeader1 = false;
      count = 1;
      Serial.println("**");
    }
    
    inBytes[count % 9] = inByte;
    count++;

//    For debugging purpose
//    Serial.print("0: ");
//    Serial.println(inBytes[0], HEX);
//    Serial.print("1: ");
//    Serial.println(inBytes[1], HEX);
//    Serial.print("2: ");
//    Serial.println(inBytes[2], HEX);
//    Serial.print("3: ");
//    Serial.println(inBytes[3], HEX);
//    Serial.print("4: ");
//    Serial.println(inBytes[4], HEX);
//    Serial.print("5: ");
//    Serial.println(inBytes[5], HEX);
//    Serial.print("6: ");
//    Serial.println(inBytes[6], HEX);
//    Serial.print("7: ");
//    Serial.println(inBytes[7], HEX);
//    Serial.print("8: ");
//    Serial.println(inBytes[8], HEX);

    if (count == 8) {
      
      // Gather temperature
      float temp = ((float)(inBytes[4] << 8 | inBytes[5]) / 100);
      float ambientTemp = ((float)(inBytes[6] << 8 | inBytes[7]) / 100);
  
      Serial.print("Temp: ");
      Serial.println(temp);
      Serial.print("Ambient: ");
      Serial.println(ambientTemp);
    }
   
  }
}