TMP36.ino

/******************************************************************************
  TMP36.ino
  Written by Ho Yun "Bobby" Chan
  @ SparkFun Electronics
  Date: Nov 4, 2019
  https://gist.github.com/bboyho/c30b70fc308f41b92a6f1b07e5a54838

  Description: This sketch configures temperature sensor and prints the
  temperature in degrees celsius and fahrenheit. Simply adjust the `output_select`
  to view the °C, °F, or both. Open the Serial Monitor or Plotter at 115200 baud 
  to view the data.

  Development Environment Specifics:
  Arduino 1.8.9+
  
  License:
  This code is released under the MIT License (http://opensource.org/licenses/MIT)
  Distributed as-is; no warranty is given.
  
******************************************************************************/

//variables for TMP36
float tmp36_voltage = 0;                      //the voltage measured from the TMP36
float tmp36_degC = 0;                         //the temperature in Celsius, calculated from the voltage
float tmp36_degF = 0;                         //the temperature in Fahrenheit, calculated from the voltage

//0 = output degrees °C
//1 = output degrees °F
//any other number = output degrees °C and °F
int output_select = 1; //select output

void setup() {
  Serial.begin(115200);    // Start serial communication at 115200 baud
  if (output_select == 0 ) {
    Serial.println("TMP36[°C]");
  }
  else if (output_select == 1) {
    Serial.println("TMP36[°F]");
  }
  else {
    Serial.print("TMP36[°C]");
    Serial.print(",");
    Serial.println("TMP36[°F]");
  }
}// end setup

void loop() {
  //get TMP36 readings and calculate
  tmp36_voltage = analogRead(A0) * 0.004882814;   //convert the analog reading, which varies from 0 to 1023, back to a voltage value from 0-5 volts
  tmp36_degC = (tmp36_voltage - 0.5) * 100.0;     //convert the voltage to a temperature in degrees Celsius
  tmp36_degF = tmp36_degC * (9.0 / 5.0) + 32.0;   //convert the voltage to a temperature in degrees Fahrenheit

  if (output_select == 0 ) {
    // Print temperature in °C
    //Serial.print("Temperature in Celsius: ");
    Serial.println(tmp36_degC);//TMP36 temperature
  }
  else if (output_select == 1) {
    // Print temperature in °F
    //Serial.print("Temperature in Fahrenheit: ");
    Serial.println(tmp36_degF);

  }
  else {
    Serial.print(tmp36_degC);       //TMP36 temperature
    Serial.print(",");              //seperator
    Serial.println(tmp36_degF);
  }

  delay(5); // Delay added for easier readings

}//end loop