(Week 1):
Wiring:
Schematics:
Code:
// Author: Niam Moltta
// the setup routine runs once when you press reset:
void setup() {
// initialize the digital pin as an output.
pinMode(8, OUTPUT);
pinMode(10, OUTPUT);
pinMode(12, OUTPUT);
}
void loop() {
digitalWrite(8, HIGH); //red on
delay(5000); //eight seconds
digitalWrite(8, LOW); //red off
digitalWrite(12, HIGH); //green on
delay(5000); //three seconds
digitalWrite(12, LOW); //green off
delay(500);
digitalWrite(12, HIGH); //green on
delay(500); //one second
digitalWrite(12, LOW); //green off
delay(500);
digitalWrite(12, HIGH); //green on
delay(500); //one second
digitalWrite(12, LOW); //green off
delay(500);
digitalWrite(12, HIGH); //green on
delay(500); // one sec
digitalWrite(12, LOW); //green off
digitalWrite(10, HIGH); //yellow on
delay(3000); //three sec
digitalWrite(10, LOW); //yellow off
//repeat from the beginning
}Demo:
(Week 3)
Build a sonar using arduino, a servo, and a ping and visualize it as a radar with Processing.
it deserved its own repository: https://github.com/TaniaMol/ArduinoRadar
(Week 4):
Instructions:
Vehicle circulation can be blocked by the barrier if the train appears or the pedestrian presses the button for the green light.
The green light button is activated if there is no train approaching, and enough time (9 sec) has passed since the button was last activated.
The green light is activated for 5 seconds, which is followed by an intermittent beep. Then, the green light blinks for 3 seconds and the intermittent beep becomes more frequent. After that, the red light is activated again, and the timer counts the time from 0 to 9 seconds.
If the train appears when the green light is on for pedestrians, the red signal is activated urgently and a continuous beep of a different height can be heard.
You can imagine the intersection happening like this:
Black path is for cars, white & gray path is for the train and brown path is for people to cross.
While the train is passing, the switch cannot request a green light.
When the train comes again, the green light turns off and the red light turns on.
When the photoresistor is bright, that means the train is not passing but when you turn it dark, it means the train is passing.
Wiring:
Schematics:
Code that didn't work and you are welcome to suggest any improvements:
//Ava's TRAFFIC INTERSECTION
//Author: Niam Moltta
#include <Servo.h>
#define SENSOR A0
#define BUZZER 10
#define BUTTON 9
#define BARRIER 11
#define GREEN 13
#define RED 12
int a = 2;
int b = 3;
int c = 4;
int d = 5;
int e = 6;
int f = 7;
int g = 8;
int count;
Servo myservo;
void setup() {
pinMode(SENSOR, INPUT); //photoresistor
pinMode(BUZZER, OUTPUT);
pinMode(BUTTON, INPUT);
pinMode(BARRIER, OUTPUT); //servo
pinMode(GREEN, OUTPUT);
pinMode(RED, OUTPUT);
pinMode(a, OUTPUT); //DISPLAY FROM 2 TO 9
pinMode(b, OUTPUT);
pinMode(c, OUTPUT);
pinMode(d, OUTPUT);
pinMode(e, OUTPUT);
pinMode(f, OUTPUT);
pinMode(g, OUTPUT);
digitalWrite(BUTTON, HIGH);
myservo.attach(BARRIER);
Serial.begin(9600);
}
void loop() {
int Train = analogRead(A0); // Value of photoresistor.
int Button = digitalRead(BUTTON); // Request for crossing
Serial.println(Train);
delay(5); //print value to serial
switch (count) {
case 0:
digitalWrite(a, LOW);
digitalWrite(b, LOW);
digitalWrite(c, LOW);
digitalWrite(d, LOW);
digitalWrite(e, LOW);
digitalWrite(f, LOW);
digitalWrite(g, HIGH);
delay(1000);
break;
case 1:
digitalWrite(a, HIGH);
digitalWrite(b, LOW);
digitalWrite(c, LOW);
digitalWrite(d, HIGH);
digitalWrite(e, HIGH);
digitalWrite(f, HIGH);
digitalWrite(g, HIGH);
delay(1000);
break;
case 2:
digitalWrite(a, LOW);
digitalWrite(b, LOW);
digitalWrite(c, HIGH);
digitalWrite(d, LOW);
digitalWrite(e, LOW);
digitalWrite(f, HIGH);
digitalWrite(g, LOW);
delay(1000);
break;
case 3:
digitalWrite(a, LOW);
digitalWrite(b, LOW);
digitalWrite(c, LOW);
digitalWrite(d, LOW);
digitalWrite(e, HIGH);
digitalWrite(f, HIGH);
digitalWrite(g, LOW);
delay(1000);
break;
case 4:
digitalWrite(a, HIGH);
digitalWrite(b, LOW);
digitalWrite(c, LOW);
digitalWrite(d, HIGH);
digitalWrite(e, HIGH);
digitalWrite(f, LOW);
digitalWrite(g, LOW);
delay(1000);
break;
case 5:
digitalWrite(a, LOW);
digitalWrite(b, HIGH);
digitalWrite(c, LOW);
digitalWrite(d, LOW);
digitalWrite(e, HIGH);
digitalWrite(f, LOW);
digitalWrite(g, LOW);
delay(1000);
break;
case 6:
digitalWrite(a, LOW);
digitalWrite(b, HIGH);
digitalWrite(c, LOW);
digitalWrite(d, LOW);
digitalWrite(e, LOW);
digitalWrite(f, LOW);
digitalWrite(g, LOW);
delay(1000);
break;
case 7:
digitalWrite(a, LOW);
digitalWrite(b, LOW);
digitalWrite(c, LOW);
digitalWrite(d, HIGH);
digitalWrite(e, HIGH);
digitalWrite(f, LOW);
digitalWrite(g, HIGH);
delay(1000);
break;
case 8:
digitalWrite(a, LOW);
digitalWrite(b, LOW);
digitalWrite(c, LOW);
digitalWrite(d, LOW);
digitalWrite(e, LOW);
digitalWrite(f, LOW);
digitalWrite(g, LOW);
delay(1000);
break;
case 9:
digitalWrite(a, LOW);
digitalWrite(b, LOW);
digitalWrite(c, LOW);
digitalWrite(d, LOW);
digitalWrite(e, HIGH);
digitalWrite(f, LOW);
digitalWrite(g, LOW);
delay(1000);
break;
break;
}
if (Train > 628) { //Train passing by.
digitalWrite(GREEN, LOW);
digitalWrite(RED, HIGH);
tone(BUZZER, 1000, 500);
myservo.write(0); //barrier down
}
else {
digitalWrite(GREEN, LOW);
digitalWrite(RED, HIGH);
myservo.write(90); //barrier up
}
if (Train < 628 && Button == LOW) { //Button pressed.
Walker();
}
}
int Walker() {
myservo.write(0); //barrier down
delay(1000);
digitalWrite(RED, LOW);
delay(50);
digitalWrite(GREEN, HIGH);
count = 1;
delay(5000);
tone(BUZZER, 380, 500); //starts blinking and beeping
digitalWrite(GREEN, LOW);
delay(500);
digitalWrite(GREEN, HIGH);
delay(500);
tone(BUZZER, 380, 500);
digitalWrite(GREEN, LOW);
delay(500);
digitalWrite(GREEN, HIGH);
delay(500);
tone(BUZZER, 380, 500);
digitalWrite(GREEN, LOW);
delay(500);
digitalWrite(GREEN, HIGH);
delay(500);
tone(BUZZER, 380, 500);
digitalWrite(GREEN, LOW); //blinking becomes more frequent
delay(150);
digitalWrite(GREEN, HIGH);
delay(150);
tone(BUZZER, 580, 150); //tone goes higher
digitalWrite(GREEN, LOW);
delay(150);
digitalWrite(GREEN, HIGH);
delay(150);
tone(BUZZER, 580, 150);
digitalWrite(GREEN, LOW);
delay(150);
digitalWrite(GREEN, HIGH);
delay(150);
tone(BUZZER, 580, 150);
digitalWrite(GREEN, LOW);
delay(50);
digitalWrite(GREEN, HIGH);
delay(50);
count = 9;
tone(BUZZER, 580, 50);
digitalWrite(GREEN, LOW);
digitalWrite(RED, HIGH);
myservo.write(90); //barrier up
}Demo:
(Week 5)
A robot who runs from the enemy as soon as he finds it in front of him.
Wiring:
Schematics:
Code:
//Coward Robot
//Author: Niam Moltta
//this coward Starts reversing when it founds something close.
#define E1 10 // Enable Pin for motor 1
#define I2 8 // Control pin 1 for motor 1
#define I1 9 // Control pin 2 for motor 1
const int Ping = A0; //Ultrasonic sensor
void setup() {
Serial.begin(9600);
pinMode(E1, OUTPUT);
pinMode(I1, OUTPUT);
pinMode(I2, OUTPUT);
}
void loop() {
//analogWrite(E1, 255); // Run in half speed
long duration, inches, cm;
pinMode(Ping, OUTPUT);
digitalWrite(Ping, LOW);
delayMicroseconds(2);
digitalWrite(Ping, HIGH);
delayMicroseconds(5);
digitalWrite(Ping, LOW);
pinMode(Ping, INPUT);
duration = pulseIn(Ping, HIGH);
inches = microsecondsToInches(duration);
cm = microsecondsToCentimeters(duration);
// Serial monitor
Serial.print(inches);
Serial.print("in, ");
Serial.print(cm);
Serial.print("cm");
Serial.println();
delay(15);
if (cm <= 30) {
delay(1000);
digitalWrite(E1, HIGH);
digitalWrite(I1, LOW); //ccw
digitalWrite(I2, HIGH);
}
else {
digitalWrite(E1, HIGH); //cw
digitalWrite(I1, HIGH);
digitalWrite(I2, LOW);
}
}
long microsecondsToInches(long microseconds) {
return microseconds / 74 / 2;
}
long microsecondsToCentimeters(long microseconds) {
return microseconds / 29 / 2;
}Demo:
