CODE FOR SPEED DETECTOR
#include <LiquidCrystal.h>
const int rs = 7, en = 6, d4 = 5, d5 = 4, d6 = 3, d7 = 2;
LiquidCrystal lcd(rs, en, d4, d5, d6, d7);
int sen1=11;
int sen2=12;
unsigned long t1=0;
unsigned long t2=0;
float velocity;
void setup()
{
lcd.begin(16, 2);
pinMode(sen1,INPUT);
pinMode(sen2,INPUT);
Serial.begin(9600);
lcd.setCursor(0,0);
lcd.print(" Speed Detector ");
}
void loop()
{
while(digitalRead(sen1));
while(digitalRead(sen1)==0);
t1=millis();
while(digitalRead(sen2));
t2=millis();
velocity=t2-t1;
velocity=velocity/1000;//convert millisecond to second
velocity=(5.0/velocity);//v=d/t
velocity=velocity*3600;//multiply by seconds per hr
velocity=velocity/1000;//division by meters per Km
for(int i=5;i>0;i
){
lcd.setCursor(3,1);
lcd.print(velocity);
lcd.print(" Km/hr ");
delay(500);
lcd.setCursor(3,1);
lcd.print(" ");
delay(500);
}
}
SPEED DETECTOR CIRCUIT
Image Title
BLUETOOTH CAR
ARDUINO CODE
#include <AFMotor.h>
//initial motors in
AF_DCMotor motor1(1, MOTOR12_1KHZ);
AF_DCMotor motor2(2, MOTOR12_1KHZ);
AF_DCMotor motor3(3, MOTOR34_1KHZ);
AF_DCMotor motor4(4, MOTOR34_1KHZ);
char command;
void setup()
{
Serial.begin(9600); //Set the baud rate to your Bluetooth module.
}
void loop(){
if(Serial.available() > 0){
command = Serial.read();
Stop(); //initialize with motors stoped
//Change pin mode only if new command is different from previous.
//Serial.println(command);
switch(command){
case 'F':
forward();
break;
case 'B':
back();
break;
case 'L':
left();
break;
case 'R':
right();
break;
}
}
}
void forward()
{
motor1.setSpeed(255); //Define maximum velocity
motor1.run(FORWARD); //rotate the motor clockwise
motor2.setSpeed(255); //Define maximum velocity
motor2.run(FORWARD); //rotate the motor clockwise
motor3.setSpeed(255);//Define maximum velocity
motor3.run(FORWARD); //rotate the motor clockwise
motor4.setSpeed(255);//Define maximum velocity
motor4.run(FORWARD); //rotate the motor clockwise
}
void back()
{
motor1.setSpeed(255); //Define maximum velocity
motor1.run(BACKWARD); //rotate the motor anti-clockwise
motor2.setSpeed(255); //Define maximum velocity
motor2.run(BACKWARD); //rotate the motor anti-clockwise
motor3.setSpeed(255); //Define maximum velocity
motor3.run(BACKWARD); //rotate the motor anti-clockwise
motor4.setSpeed(255); //Define maximum velocity
motor4.run(BACKWARD); //rotate the motor anti-clockwise
}
void left()
{
motor1.setSpeed(255); //Define maximum velocity
motor1.run(BACKWARD); //rotate the motor anti-clockwise
motor2.setSpeed(255); //Define maximum velocity
motor2.run(BACKWARD); //rotate the motor anti-clockwise
motor3.setSpeed(255); //Define maximum velocity
motor3.run(FORWARD); //rotate the motor clockwise
motor4.setSpeed(255); //Define maximum velocity
motor4.run(FORWARD); //rotate the motor clockwise
}
void right()
{
motor1.setSpeed(255); //Define maximum velocity
motor1.run(FORWARD); //rotate the motor clockwise
motor2.setSpeed(255); //Define maximum velocity
motor2.run(FORWARD); //rotate the motor clockwise
motor3.setSpeed(255); //Define maximum velocity
motor3.run(BACKWARD); //rotate the motor anti-clockwise
motor4.setSpeed(255); //Define maximum velocity
motor4.run(BACKWARD); //rotate the motor anti-clockwise
}
void Stop()
{
motor1.setSpeed(0); //Define minimum velocity
motor1.run(RELEASE); //stop the motor when release the button
motor2.setSpeed(0); //Define minimum velocity
motor2.run(RELEASE); //rotate the motor clockwise
motor3.setSpeed(0); //Define minimum velocity
motor3.run(RELEASE); //stop the motor when release the button
motor4.setSpeed(0); //Define minimum velocity
motor4.run(RELEASE); //stop the motor when release the button
}
AUTOMATIC DOOR BELL
ARDUINO CODE
// defines pins numbers
const int trigPin = 9;
const int echoPin = 10;
const int buzzer = 11;
const int ledPin = 13;
// defines variables
long duration;
int distance;
int safetyDistance;
void setup() {
pinMode(trigPin, OUTPUT); // Sets the trigPin as an Output
pinMode(echoPin, INPUT); // Sets the echoPin as an Input
pinMode(buzzer, OUTPUT);
pinMode(ledPin, OUTPUT);
Serial.begin(9600); // Starts the serial communication
}
void loop() {
// 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;
safetyDistance = distance;
if (safetyDistance <= 5){
digitalWrite(buzzer, HIGH);
digitalWrite(ledPin, HIGH);
}
else{
digitalWrite(buzzer, LOW);
digitalWrite(ledPin, LOW);
}
// Prints the distance on the Serial Monitor
Serial.print("Distance: ");
Serial.println(distance);
}
MUSIC REACTIVE LIGHTS
ARDUINO CODE
int soundPin = A0;
int LED1 = 2;
int LED2 = 3;
int LED3 = 4;
int LED4 = 5;
int LED5 = 6;
int LED6 = 7;
int LED7 = 8;
int LED8 = 9;
void setup()
{
Serial.begin(9600);
pinMode(LED1, OUTPUT);
pinMode(LED2, OUTPUT);
pinMode(LED3, OUTPUT);
pinMode(LED4, OUTPUT);
pinMode(LED5, OUTPUT);
pinMode(LED6, OUTPUT);
pinMode(LED7, OUTPUT);
pinMode(LED8, OUTPUT);
}
void loop()
{
long sum = 0;
for(int i=0; i<100; i++) // taking 100 sample of sound
{
sum += analogRead(soundPin);
}
sum = sum/100; // average the sample of sound
if (sum>=100) digitalWrite(LED1, HIGH); else digitalWrite(LED1, LOW);
if (sum>=200) digitalWrite(LED2, HIGH); else digitalWrite(LED2, LOW);
if (sum>=300) digitalWrite(LED3, HIGH); else digitalWrite(LED3, LOW);
if (sum>=350) digitalWrite(LED4, HIGH); else digitalWrite(LED4, LOW);
if (sum>=400) digitalWrite(LED5, HIGH); else digitalWrite(LED5, LOW);
if (sum>=450) digitalWrite(LED6, HIGH); else digitalWrite(LED6, LOW);
if (sum>=500) digitalWrite(LED7, HIGH); else digitalWrite(LED7, LOW);
if (sum>=550) digitalWrite(LED8, HIGH); else digitalWrite(LED8, LOW);
delay(10);
Serial.println(sum);
}
SOLAR TRACKER
SOLAR TRACKER
ARDUINO CODE
//The DIY Life //10 October 2016 //Michael Klements #include <Servo.h> Servo tracker; // create servo object to control a servo int eastLDRPin = 0; //Assign analogue pins int westLDRPin = 1; int eastLDR = 0; //Create variables for the east and west sensor values int westLDR = 0; int error = 0; int calibration = 204; //Calibration offset to set error to zero when both sensors receive an equal amount of light int trackerPos = 90; //Create a variable to store the servo position void setup() { tracker.attach(11); // attaches the servo on pin 11 to the servo object } void loop() { eastLDR = calibration + analogRead(eastLDRPin); //Read the value of each of the east and west sensors westLDR = analogRead(westLDRPin); if(eastLDR<350 && westLDR<350) //Check if both sensors detect very little light, night time { while(trackerPos<=160) //Move the tracker all the way back to face east for sunrise { trackerPos++; tracker.write(trackerPos); delay(100); } } error = eastLDR - westLDR; //Determine the difference between the two sensors. if(error>15) //If the error is positive and greater than 15 then move the tracker in the east direction { if(trackerPos<=160) //Check that the tracker is not at the end of its limit in the east direction { trackerPos++; tracker.write(trackerPos); //Move the tracker to the east } } else if(error<-15) //If the error is negative and less than -15 then move the tracker in the west direction { if(trackerPos>20) //Check that the tracker is not at the end of its limit in the west direction { trackerPos--; tracker.write(trackerPos); //Move the tracker to the west } } delay(100); }
CIRCUIT FOR OBSTACLE AVOIDING CAR
Image Subtitle
CIRCUIT FOR OBSTACLEÂ AVOIDING CAR
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