Arduino 3D printed Can Robot - object avoiding - Ardumotive Arduino Greek Playground

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Introduction

Published date: 7/1/2017

In this "how to" guide i will show you how to make your own 3D printed Can Robot with the Arduino UNO micro-controller.

This is a remake of the Attiny Canbot that I found at Thingiverse.com by Wingman94 (link here) . I made my own circuit with ATmega328 IC and I add a buzzer to make a beep tone every time that robot finds an object in front of it. I didn't include the IR remote control function.

This little robot is powered by one 3.7V 500mAh rechargeable battery and can be charged from the builtin charging circuit .

Watch my little robot in action.

What you will need - Hardware

For this project you will need:

You will also need a TTL to USB module or an Arduino UNO board for the programming procedure.

Tools: You will need a soldering iron and hot melt glue gun and of course a 3D printer.

The circuit

Take your time and make your circuit as small as you can so it can fit inside the can robot.

The code

Connect your circuit with TTL to USB module (or Arduino uno board - note - remove ATmega328) with 5 cables to the programming header. The pins RX and TX must be cross-connected. You can change the speed of your small robot by changing the "speedS=10" variable - line 14.

/*  Arduino 3D printed Can Robot with object avoiding function
 *  Dev: Michalis Vasilakis // Date: 7/1/2017 // Ver: 1.0
 *  More info at http://www.ardumotive.com/workshop
 */

#include <Servo.h>
#include <Ultrasonic.h>

const int buzzer = 6;
Ultrasonic ultrasonic(12,13);
Servo leftServo, rightServo;
int dist=100;
int count=0;
int speedS = 10;
void setup() {
  rightServo.attach(7);
  leftServo.attach(8);
  delay(3000);

}

void loop() {
  dist = ultrasonic.Ranging(CM); //Use 'CM' for centimeters or 'INC' for inches
  if (dist > 15){
    forward();  
  }
  else{
    tone(buzzer,200,500);
    if (count==0){
      right();
      delay(400);
    }
    else if(count==1){
      left();
      delay(400);
    }
    else if(count==2){
      backward();
      delay(1000);
      left();
      delay(400);
    }
    if (count==3){
      count=0;
    }
    else{
      count++;
    }
  }
  delay(10);
}

void forward(){
  leftServo.write(speedS+90+10);
  rightServo.write(95-speedS-10);
}
void backward(){
  leftServo.write(90-speedS);
  rightServo.write(speedS+95);
}
void right(){
  leftServo.write(speedS+90);
  rightServo.write(speedS+95);
}
void left(){
  leftServo.write(speedS-90);
  rightServo.write(speedS-95);
}
void stop(){
  leftServo.write(90);
  rightServo.write(95);
}