/*authors: Luiza Longo, Ali Zolfaghari and Ceren Tüfek Computational Design and Fabrication, ITECH Uni Stuttgart SS2023 Teachers: T. Schwinn, N. Opgenorth, T. Stark, Y. Tahouni, X. Yang and Prof. A. Menges References: temperature sensor https://www.makerguides.com/lm35-arduino-tutorial/ motor https://docs.arduino.cc/tutorials/motor-shield-rev3/msr3-controlling-dc-motor touch sensor https://arduinogetstarted.com/tutorials/arduino-touch-sensor alcohol sensor https://circuitdigest.com/microcontroller-projects/interfacing-mq3-alcohol-sensor-with-arduino ultrasonic sensor https://howtomechatronics.com/tutorials/arduino/ultrasonic-sensor-hc-sr04/ motor https://docs.arduino.cc/learn/electronics/transistor-motor-control speakers https://steemit.com/utopian-io/@kimp0gi/playing-music-in-arduino-using-sd-card-module */ //CODE START //creating random nbr long randNumber; //booleans for interaction bool touchSensor = false; //bool interactionStart = false; //_________________________________________________________ultrasonic sensor start const int trigPin = 3; const int echoPin = 6; long duration; int distance; //_________________________________________________________ultrasonic sensor end //_________________________________________________________alcohol sensor start #define Sober 200 // Define max value that we consider sober #define Drunk 400 // Define min value that we consider drunk #define MQ3 1 float alcoholValue; //variable to store sensor value //_________________________________________________________alcohol sensor end //_________________________________________________________touch sensor start const int touchPin = 7; //_________________________________________________________touch sensor end //_________________________________________________________temperature sensor start #define temperaturePin A0 //_________________________________________________________temperature sensor end //_________________________________________________________speaker and sd start #include #include #include #include #include #define SD_ChipSelectPin 4 TMRpcm tmrpcm; //_________________________________________________________speaker and sd end //_________________________________________________________motor start int pushButton = 2; //button to control the motor with a physical button int motorControl = 5; //_________________________________________________________motor end void setup() { //generating random seed randomSeed(analogRead(4)); // initialize serial communication at 9600 bits per second: Serial.begin(9600); //_________________________________________________________ultrasonic sensor start pinMode(trigPin, OUTPUT); // Sets the trigPin as an Output pinMode(echoPin, INPUT); // Sets the echoPin as an Input //_________________________________________________________alcohol sensor start Serial.println("mq3 is working"); //_________________________________________________________alcohol sensor end //touchsensor start pinMode(touchPin, INPUT); //_________________________________________________________touchsensor end //_________________________________________________________speaker and sd start tmrpcm.speakerPin = 9; Serial.begin(9600); if (!SD.begin(SD_ChipSelectPin)){ Serial.println("SD fail"); return; } else { Serial.println("SD ok"); } tmrpcm.setVolume(5); //_________________________________________________________speaker and sd end //_________________________________________________________motor start // make the pushbutton's pin an input: pinMode(pushButton, INPUT); // make the transistor's pin an output: pinMode(motorControl, OUTPUT); //_________________________________________________________motor end } void loop() { //_________________________________________________________ultrasonic sensor start // Clears the trigPin digitalWrite(trigPin, LOW); delayMicroseconds(2); // Sets the trigPin on HIGH state for 10 micro seconds digitalWrite(trigPin, HIGH); delayMicroseconds(10); digitalWrite(trigPin, LOW); // Reads the echoPin, returns the sound wave travel time in microseconds duration = pulseIn(echoPin, HIGH); // Calculating the distance distance = duration * 0.034 / 2; // Prints the distance on the Serial Monitor Serial.print("Distance: "); Serial.println(distance); //_________________________________________________________ultrasonic sensor end //user interaction will start if someone is close enough from the sensor. otherwise, the ultrasonic sensor will run on a loop waiting for someone to start. //This ction also activates the motor. if (distance <= 10){ //play opening song tmrpcm.play("os1.wav"); // ramp up the motor speed for(int x = 0; x <= 150; x++){ analogWrite(motorControl, x); delay(50); } // ramp down the motor speed for(int x = 150; x >= 0; x--){ analogWrite(motorControl, x); delay(50); } delay(20000); tmrpcm.play("os2.wav"); delay(21000); //play transition //tmrpcm.play("ts1.wav"); //delay(15000); while (touchSensor == false) { tmrpcm.play("ts3.wav"); delay(5000); int state = digitalRead(touchPin); // print state to Serial Monitor Serial.println("waiting for touch"); Serial.println(state); touchSensor = true; tmrpcm.play("ts3.wav"); delay(5000); } if (touchSensor == true){ Serial.println("touched"); //initiates once the person has touched it //randomizes between two sentences randNumber=random(10); if (randNumber < 5){ Serial.println("random number:"); Serial.println(randNumber); tmrpcm.play("ts4.wav"); delay(7000); } else { tmrpcm.play("ts5.wav"); Serial.println("random number:"); Serial.println(randNumber); delay(7500); } } //moves on to alcohol sensor tmrpcm.play("tr1.wav"); delay(12500); tmrpcm.play("a1.wav"); delay(5500); //pause for the person to blow delay(5000); //_________________________________________________________alcohol sensor start alcoholValue = analogRead(MQ3); // read analog input pin 0 Serial.print("Sensor Value: "); Serial.print(alcoholValue); if (alcoholValue < Sober) { Serial.println(" | Status: Sober"); tmrpcm.play("a2.wav"); delay(8000); } else if (alcoholValue >= Sober && alcoholValue < Drunk) { Serial.println(" | Status: Drinking but within legal limits"); tmrpcm.play("a3.wav"); delay(10500); } else { Serial.println(" | Status: DRUNK"); //there are two audio options if the alcohol sensor detects if the person is drunk. they are randomized randNumber=random(10); Serial.println("random number:"); Serial.println(randNumber); if (randNumber > 5){ tmrpcm.play("a4.wav"); delay(10000); } else { tmrpcm.play("a5.wav"); delay(11500); } } Serial.println("alcohol reading done"); //_________________________________________________________alcohol sensor end //_________________________________________________________temperature sensor start //moves on to temperature sensor tmrpcm.play("tr2.wav"); delay(10500); delay(1500); // Get a reading from the temperature sensor: int reading = analogRead(temperaturePin); // Convert the reading into voltage: float voltage = reading * (5000 / 1024.0); // Convert the voltage into the temperature in degree Celsius: float temperature = (voltage / 10-32)*(5/9); // Print the temperature in the Serial Monitor: Serial.print(temperature); Serial.print(" \xC2\xB0"); // shows degree symbol Serial.println("C"); //reading according to temperature level. there are four possible intervals and four possible answers if (temperature < 25) { Serial.println(" | Status: Really Cold"); tmrpcm.play("te1.wav"); delay(18500); } else if (temperature >= 25 && temperature < 30) { Serial.println(" | Status: Cold"); tmrpcm.play("te2_1.wav"); delay(4500); tmrpcm.play("te2_2.wav"); delay(8500); } else if (temperature >= 30 && temperature < 35) { Serial.println(" | Status: Hot"); tmrpcm.play("te3.wav"); delay(10500); } else { Serial.println(" | Status: Really Hot"); tmrpcm.play("te4.wav"); delay(15000); } //_________________________________________________________temperature sensor end delay (1500); //after the temperature sensor is done, the interaction is closed. closing sentence plays tmrpcm.play("cl1_1.wav"); delay(17000); tmrpcm.play("cl1_2.wav"); delay(4000); //motor plays once more for(int x = 0; x <= 150; x++){ analogWrite(motorControl, x); delay(50); } // ramp down the motor speed for(int x = 150; x >= 0; x--){ analogWrite(motorControl, x); delay(50); } //portion of the code for motor testing, including physical button. inactive on main code /*motor start // read the state of the button and check if it is pressed if(digitalRead(pushButton) == HIGH){ // ramp up the motor speed for(int x = 0; x <= 250; x++){ analogWrite(motorControl, x); delay(50); } // ramp down the motor speed for(int x = 250; x >= 0; x--){ analogWrite(motorControl, x); delay(50); } } delay(1); /motor end*/ } }