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Wall-E robot using Arduino - Arduino Geek

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Hello everyone! Welcome to Arduino Geek. Today we will discuss about an Arduino based Wall-E robot. So let's get started.

Wall-E robot using Arduino:

Building a WALL-E robot using Arduino can be a fun and challenging project for anyone interested in robotics, programming, and DIY projects. It requires basic knowledge of electronics, programming, and some mechanical skills. The robot can be programmed to move, turn, avoid obstacles, and interact with objects using servos, motors, and other components.

Components:

To create a Wall-E robot using an Arduino, you'll need some components and tools. Here's a list of what you'll need:
  1. Arduino board (such as Arduino Uno or Arduino Nano)
  2. Motor driver (such as L298N or TB6612FNG)
  3. Two DC motors (with wheels)
  4. Servo motor (for the Wall-E's neck)
  5. Ultrasonic sensor (for obstacle detection)
  6. Battery pack (for powering the motors)
  7. Jumper wires
  8. Breadboard or prototyping board
  9. Wall-E body (you can use cardboard or 3D print it)

Tools:

  1. Soldering iron (if necessary)
  2. Screwdriver
  3. Glue gun

How to make Wall-E robot using Arduino:

Once you have all the necessary components and tools, you can follow these steps to build the Wall-E robot:
  1. Build the Wall-E body using cardboard or 3D printing. You can find designs online or create your own.
  2. Attach the motors to the wheels and mount them on the base of the Wall-E body.
  3. Connect the motor driver to the Arduino board using jumper wires. Make sure to connect the ground pins of the Arduino and the motor driver.
  4. Connect the two DC motors to the motor driver. Use the screwdriver to tighten the connections.
  5. Connect the servo motor to the Arduino board. You can use the 5V and ground pins on the board to power the servo motor, and the digital pin 9 for controlling the servo.
  6. Connect the ultrasonic sensor to the Arduino board. Use the 5V and ground pins on the board to power the sensor, and the digital pins 11 and 12 for trigger and echo respectively.
  7. Write the code for the Wall-E robot using the Arduino IDE. You can use the Servo and Ultrasonic libraries to control the servo motor and the ultrasonic sensor respectively. You'll also need to control the DC motors using the motor driver.
  8. Upload the code to the Arduino board and test the Wall-E robot. You can use the ultrasonic sensor to detect obstacles and avoid them by changing the direction of the DC motors. You can also use the servo motor to move Wall-E's neck.
  9. Once the Wall-E robot is working properly, you can glue the components in place to make it more stable.

Note: This is just a basic example, and there are many modifications and enhancements that you can make to your WALL-E robot using Arduino, such as adding more sensors, programming different movements, and creating a remote control interface. Have fun exploring and experimenting with your project!

Arduino Code: 


#include <Servo.h>

Servo myservo;  // create servo object to control a servo

int trigPin = 9;    // Trigger pin of ultrasonic sensor
int echoPin = 10;   // Echo pin of ultrasonic sensor

long duration, distance;

void setup() {
  pinMode(trigPin, OUTPUT);  // Sets the trigPin as an Output
  pinMode(echoPin, INPUT);   // Sets the echoPin as an Input
  myservo.attach(3);  // attaches the servo on pin 3 to the servo object
  Serial.begin(9600); // Starts the serial communication
}

void loop() {
  digitalWrite(trigPin, LOW);   // Sets the trigPin on LOW state
  delayMicroseconds(2);         
  
  digitalWrite(trigPin, HIGH);  // Sets the trigPin on HIGH state
  delayMicroseconds(10);         
  digitalWrite(trigPin, LOW);   // Sets the trigPin on LOW state
  
  duration = pulseIn(echoPin, HIGH);  // Reads the echoPin, returns the sound wave travel time in microseconds
  
  distance= duration*0.034/2;    // Calculates the distance in cm
  
  Serial.print("Distance: ");
  Serial.print(distance);
  Serial.println(" cm");
  
  if(distance<15){  // If the distance is less than 15 cm, the robot will turn left
    myservo.write(0); // Turns the servo to the left
    delay(500);  // Delays for 0.5 seconds
  }
  else{  // If the distance is greater than or equal to 15 cm, the robot will move forward
    analogWrite(5, 150);  // Sets the speed of the left motor
    analogWrite(6, 150);  // Sets the speed of the right motor
  }
}

These code snippets are just examples, and you will need to modify them to suit your specific robot. You can add more sensors, motors, and other components to your Wall-E robot and program them using the Arduino IDE. Good luck with your project!
 
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