46 lines
1.2 KiB
C++
46 lines
1.2 KiB
C++
const int sensorPin = A0;
|
|
const float baselineTemp = 15.0;
|
|
|
|
void setup() {
|
|
// put your setup code here, to run once:
|
|
Serial.begin(9600);
|
|
for (int pinNumber = 2; pinNumber < 5; pinNumber++) {
|
|
pinMode(pinNumber, OUTPUT);
|
|
digitalWrite(pinNumber, LOW);
|
|
}
|
|
|
|
}
|
|
|
|
void loop() {
|
|
// put your main code here, to run repeatedly:
|
|
int sensorVal = analogRead(sensorPin);
|
|
Serial.print("Sensor value: ");
|
|
Serial.print(sensorVal);
|
|
float voltage = (sensorVal / 1024.0) * 5.0;
|
|
Serial.print(", Volts: ");
|
|
Serial.print(voltage);
|
|
Serial.print(", degrees C: ");
|
|
float temperature = (voltage - .5) * 100;
|
|
Serial.print(temperature);
|
|
Serial.print("\n");
|
|
|
|
if (temperature < baselineTemp + 2) {
|
|
digitalWrite(2, LOW);
|
|
digitalWrite(3, LOW);
|
|
digitalWrite(4, LOW);
|
|
} else if (temperature >= baselineTemp + 2 && temperature < baselineTemp + 4) {
|
|
digitalWrite(2, HIGH);
|
|
digitalWrite(3, LOW);
|
|
digitalWrite(4, LOW);
|
|
} else if (temperature >= baselineTemp + 4 && temperature < baselineTemp + 5) {
|
|
digitalWrite(2, HIGH);
|
|
digitalWrite(3, HIGH);
|
|
digitalWrite(4, LOW);
|
|
} else if (temperature >= baselineTemp + 5) {
|
|
digitalWrite(2, HIGH);
|
|
digitalWrite(3, HIGH);
|
|
digitalWrite(4, HIGH);
|
|
}
|
|
delay(1);
|
|
}
|