Computer controlled Robot with Arduino Revision as of 14:12, 27 August 2014 by Sandeep (Talk | contribs) (diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)

Intro

For this tutorial we will be using the Explore Robo kit. You may go ahead and download the schematics and other details from the link. To give a brief the Robo Controller board has a CP2102 USB to UART(Serial) convertor. We give commands to the robot from the terminal and move it. This is a very simple type and you can easily hack it. The controller board also has a atmega8 MCU with Arduino bootloader, hence we can code it from the Arduino IDE

#include <Firmata.h>
int MotorLeft[2] = {A0,A1};
int MotorRight[2] = {A2,A3};
 
void setup()
{
Serial.begin(9600);
MotorInit();
Serial.print("*Explore Robo Mode Computer: Controlled*\n\r");
Serial.println("Commands:\n W->Forward \n S->Backwards \n A->Left \n D->Right");
}
 
void loop()
{
int command; 
command = Serial.read();
  switch(command)
 {
    case 'w': Robot_Forward(); delay(100); break; 
    case 's': Robot_Backward(); delay(100); break;  
    case 'a': Robot_Left(); delay(100); break;
    case 'd': Robot_Right(); delay(100); break; 
    //in case the caps lock is ON
    case 'W': Robot_Forward(); delay(100); break; 
    case 'S': Robot_Backward(); delay(100); break;  
    case 'A': Robot_Left(); delay(100); break;
    case 'D': Robot_Right(); delay(100); break;      
    default: break; 
 }     
}
 
//Intialize the motor
void MotorInit()
{
  int i;
  for(i=0 ; i<2; i++)
  {
  pinMode(MotorLeft[i],OUTPUT);
  pinMode(MotorRight[i],OUTPUT);
  }
}
//Robot Driving Functions
void Robot_Forward()
{
   digitalWrite(MotorLeft[0],0);
   digitalWrite(MotorLeft[1],1);
   digitalWrite(MotorRight[0],1);
   digitalWrite(MotorRight[1],0);   
}
void Robot_Backward()
{
   digitalWrite(MotorLeft[0],1);
   digitalWrite(MotorLeft[1],0);
   digitalWrite(MotorRight[0],0);
   digitalWrite(MotorRight[1],1);  
}
void Robot_Left()
{
  digitalWrite(MotorLeft[0],1);
  digitalWrite(MotorLeft[1],0);
  digitalWrite(MotorRight[0],1);
  digitalWrite(MotorRight[1],0);    
}
void Robot_Right()
{
  digitalWrite(MotorLeft[0],0);
  digitalWrite(MotorLeft[1],1);
  digitalWrite(MotorRight[0],0);
  digitalWrite(MotorRight[1],1);    
}