46 lines
1.2 KiB
C++
46 lines
1.2 KiB
C++
const int sensorPin = A0;
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const float baselineTemp = 10.0;
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void setup() {
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// put your setup code here, to run once:
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Serial.begin(9600);
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for (int pinNumber = 2; pinNumber < 5; pinNumber++) {
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pinMode(pinNumber, OUTPUT);
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digitalWrite(pinNumber, LOW);
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}
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}
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void loop() {
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// put your main code here, to run repeatedly:
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int sensorVal = analogRead(sensorPin);
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Serial.print("Sensor value: ");
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Serial.print(sensorVal);
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float voltage = (sensorVal / 1024.0) * 5.0;
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Serial.print(", Volts: ");
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Serial.print(voltage);
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Serial.print(", degrees C: ");
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float temperature = (voltage - .5) * 100;
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Serial.print(temperature);
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Serial.print("\n");
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if (temperature < baselineTemp + 2) {
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digitalWrite(2, LOW);
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digitalWrite(3, LOW);
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digitalWrite(4, LOW);
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} else if (temperature >= baselineTemp + 2 && temperature < baselineTemp + 4) {
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digitalWrite(2, HIGH);
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digitalWrite(3, LOW);
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digitalWrite(4, LOW);
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} else if (temperature >= baselineTemp + 4 && temperature < baselineTemp + 5) {
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digitalWrite(2, HIGH);
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digitalWrite(3, HIGH);
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digitalWrite(4, LOW);
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} else if (temperature >= baselineTemp + 5) {
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digitalWrite(2, HIGH);
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digitalWrite(3, HIGH);
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digitalWrite(4, HIGH);
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}
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delay(1);
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}
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