The Ultrasonic Sensor - Input

This is a simple introductory Arduino project by uses an Ultrasonic Sensor to measure the object distance.

MATERIALS :

1. Arduino UNO R3

2. Ultrasonic Sensor

The Stimulation / Video

The LCD - Output

This is a simple introductory Arduino project by uses an LCD Screen to display words and timing.

MATERIALS :

1. Arduino UNO R3

2. 220 Ohm Resistor

3. Potentiometer

4. LCD Screen

The Ultrasonic Sensor Project

The Code

The LCD Project

The Stimulation / Video

The Code

TRAFFIC LIGHTS

Code

int led_red = 0; // the red LED is connected to Pin 0 of the Arduino
int led_yellow = 1; // the yellow LED is connected to Pin 1 of the Arduino
int led_green = 2; // the green LED is connected to Pin 2 of the Arduino

void setup() {
// set up all the LEDs as OUTPUT
pinMode(led_red, OUTPUT);
pinMode(led_yellow, OUTPUT);
pinMode(led_green, OUTPUT);
}

void loop() {
// turn the green LED on and the other LEDs off
digitalWrite(led_red, LOW);
digitalWrite(led_yellow, LOW);
digitalWrite(led_green, HIGH);
delay(2000); // wait 2 seconds

// turn the yellow LED on and the other LEDs off
digitalWrite(led_red, LOW);
digitalWrite(led_yellow, HIGH);
digitalWrite(led_green, LOW);
delay(1000); // wait 1 second

// turn the red LED on and the other LEDs off
digitalWrite(led_red, HIGH);
digitalWrite(led_yellow, LOW);
digitalWrite(led_green, LOW);
delay(3000); // wait 3 seconds
}

Serve Motor

Code

#include <Servo.h>

#define PIN_SERVO 10
Servo myservo;

void setup()
{
myservo.attach(PIN_SERVO);
}

void loop()
{
myservo.write(0);
delay(1000);
myservo.write(40);
delay(1000);
myservo.write(80);
delay(1000);
myservo.write(180);
delay(1000);
myservo.write(360);
delay(1000);

}

Temperature sensor

Code

const int temperaturePin = 0;

void setup()
{
Serial.begin(9600);
}

void loop()
{

float voltage, degreesC, degreesF;

voltage = getVoltage(temperaturePin);
degreesC = (voltage - 0.5) * 100.0;
degreesF = degreesC * (9.0/5.0) + 32.0;

Serial.print("voltage: ");
Serial.print(voltage);
Serial.print(" deg C: ");
Serial.print(degreesC);
Serial.print(" deg F: ");
Serial.println(degreesF);

delay(1000);
}

float getVoltage(int pin)
{

return (analogRead(pin) * 0.004882814);

}