Week 6 - Journal

In real :

I used mini breadboard and IC and Motor and adapter 9V and ultrasonic sensor

connect positive and negative of DC motor with IC. connect positive and negative with battery 9V and ground with Arduino and 5 volt with arduino to open IC . connect pens of IC with 7,8,9 pens of Arduino as shown .

connect Ultrasonic sensor VCC with 5V pen in Arduino and Gnd with Ground of Arduino and trig in pen 4 and echo in pen 2.

Tinkercad

1- Arduino UNO

2-BreadBoard

3-IC (L293D)

4-Battery 9V

5-Motor

6-Ultrasonic Sensor

7-Wires

Assembly Steps :

Setup breadboard with IC (L293D) To Uno Arduino and connect the board with the ground and 5V from the arduino From Database of IC(L293D) connected the external source power ( Battery 9V) to deliver the power to motor then connect the ultrasonic sensor to Arduino as shown

Coding:

// C++ code

//

long readUltrasonicDistance(int triggerPin, int echoPin)

{

pinMode(triggerPin, OUTPUT); // Clear the trigger

digitalWrite(triggerPin, LOW);

delayMicroseconds(2);

// Sets the trigger pin to HIGH state for 10 microseconds

digitalWrite(triggerPin, HIGH);

delayMicroseconds(10);

digitalWrite(triggerPin, LOW);

pinMode(echoPin, INPUT);

// Reads the echo pin, and returns the sound wave travel time in microseconds

return pulseIn(echoPin, HIGH);

}

void setup()

{

pinMode(9, OUTPUT);

pinMode(7, OUTPUT);

pinMode(8, OUTPUT);

}

void loop()

{

analogWrite(9, 180);

if (0.01723 * readUltrasonicDistance(4, 2) < 5) {

digitalWrite(7, LOW);

digitalWrite(8, LOW);

} else {

analogWrite(9, 180);

digitalWrite(7, HIGH);

digitalWrite(8, LOW);

}

delay(10); // Delay a little bit to improve simulation performance

}

steps of preparing bring the component and wired it and make the code on tinker cad and copied it in the Arduino and upload to Arduino board and connect the 9V adapter.. see the Action