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/* -------------------------------------------------------
Analog IR Temperature Gauge: written by ScottC on 1st Dec 2012.
http://arduinobasics.blogspot.com/2012/12/arduino-basics-analog-ir-temperature.html
* Some of the code was adapted from a sketch by Andy Gelme (@geekscape)
* For more information on using the IRTEMP
see www.freetronics.com/irtemp
* IRTemp library uses an Arduino interrupt:
* If PIN_CLOCK = 2, then Arduino interrupt 0 is used
* If PIN_CLOCK = 3, then Arduino interrupt 1 is used
---------------------------------------------------------*/
#include "IRTemp.h"
#include <Servo.h>
Servo servo1;
static const byte PIN_DATA = 2;
static const byte PIN_CLOCK = 3; // Must be either pin 2 or pin 3
static const byte PIN_ACQUIRE = 4;
static const bool SCALE=false; // Celcius: false, Farenheit: true
/* Used to capture the temperature from the IRTEMP sensor */
float irTemperature;
int temp;
/* The minimum and maximum temperatures on the gauge. */
static const int minTemp = -45;
static const int maxTemp = 135;
/* The servo minimum and maximum angle rotation */
static const int minAngle = 0;
static const int maxAngle = 175;
int servoPos;
IRTemp irTemp(PIN_ACQUIRE, PIN_CLOCK, PIN_DATA);
/*----------------------SETUP----------------------*/
void setup(void) {
servo1.attach(9); // turn on servo
}
/*-----------------------LOOP-----------------------*/
void loop(void) {
irTemperature = irTemp.getIRTemperature(SCALE);
printTemperature("IR", irTemperature);
/* If you want the ambient temperature instead - then use the code below. */
//float ambientTemperature = irTemp.getAmbientTemperature(SCALE);
//printTemperature("Ambient", ambientTemperature);
}
/*-----------printTemperature function---------------*/
void printTemperature(char *type, float temperature) {
temp=(int) temperature;
servoPos = constrain(map(temp, minTemp,maxTemp,minAngle,maxAngle),minAngle,maxAngle);
if (isnan(temperature)) {
//is not a number, do nothing
}
else {
/* To test the minimum angle insert the code below */
//servoPos = minAngle;
/*To test the maximum angle, insert the code below */
//servoPos = maxAngle;
/* Rotate servo to the designated position */
servo1.write(servoPos);
}
}
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