CS 160 SparkFun Sandbox Project

main.ino

// Project: Code controls circuitry.
// Outputs: lights
// Inputs: sensors (slider, microphone, light sensor)
//
// This program has three components:
// - light detection
// - temperature detection
// - sound detection


const int temperatureSensor = A0;
const int lightSensor = A1;
const int microphone = A2;
const int slider = A3;

const int D4 = 4;
const int D5 = 5;
const int D6 = 6;
const int D7 = 7;
const int D8 = 8;
const int D9red = 9;
const int D10green = 10;
const int D11blue = 11;
const int D13 = 13;

void setup() {
	// Configure inputs
	pinMode(temperatureSensor, INPUT);
	pinMode(lightSensor, INPUT);
	pinMode(microphone, INPUT);
	pinMode(slider, INPUT);

	// Configure outputs (lights)
	pinMode(D4, OUTPUT);
	pinMode(D5, OUTPUT);
	pinMode(D6, OUTPUT);
	pinMode(D7, OUTPUT);
	pinMode(D8, OUTPUT);
	pinMode(D9red, OUTPUT);
	pinMode(D10green, OUTPUT);
	pinMode(D11blue, OUTPUT);
}

void loop() {

	// Light detection
 	const int DARK = 10;
	int lightValue = analogRead(lightSensor);
	if (lightValue <= DARK) {
		digitalWrite(D13, HIGH);
	} else {
		digitalWrite(D13, LOW);
	}

	// Temerature detection
	const float WARM = 70.0;
	long rawTemperatureValue = analogRead(temperatureSensor);
	float voltage = rawTemperatureValue * (5 / 1023.0);
	float celsius = (voltage - 0.5) * 100;
	float fahrenheit = (celsius * 9.0 / 5.0) + 32.0;
	if (fahrenheit >= WARM) {
		analogWrite(D9red, 255);
		analogWrite(D10green, 100);
		analogWrite(D11blue, 100);
	} else {
		analogWrite(D9red, 0);
		analogWrite(D10green, 0);
		analogWrite(D11blue, 255);
	}

	// Sound detection
	int maximumSoundLevel = analogRead(slider);
	int levelOfSound = analogRead(microphone);
	const int lights[5] = {D4, D5, D6, D7, D8};

	for (int i = 0; i < 5; ++i) {
		if (levelOfSound > ((maximumSoundLevel / 5) * (i+1))) {
	 		digitalWrite(lights[i], HIGH);
		} else {
			digitalWrite(lights[i], LOW);
		}
	}

}