Computer controlled Robot with Arduino
    Revision as of 14:05, 27 August 2014 by Sandeep (Talk | contribs)

    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 

    1. #include <Firmata.h>
    2. int MotorLeft[2] = {A0,A1};
    3. int MotorRight[2] = {A2,A3};
    4. void setup()
    5. {
    6. Serial.begin(9600);
    7. MotorInit();
    8. Serial.print("*Explore Robo Mode Computer: Controlled*\n\r");
    9. Serial.println("Commands:\n W->Forward \n S->Backwards \n A->Left \n D->Right");
    10. }
    11. void loop()
    12. {
    13. int command; 
    14. command = Serial.read();
    15.   switch(command)
    16.  {
    17.     case 'w': Robot_Forward(); delay(100); break; 
    18.     case 's': Robot_Backward(); delay(100); break;  
    19.     case 'a': Robot_Left(); delay(100); break;
    20.     case 'd': Robot_Right(); delay(100); break; 
    21.     //in case the caps lock is ON
    22.     case 'W': Robot_Forward(); delay(100); break; 
    23.     case 'S': Robot_Backward(); delay(100); break;  
    24.     case 'A': Robot_Left(); delay(100); break;
    25.     case 'D': Robot_Right(); delay(100); break;      
    26.     default: break; 
    27.  }     
    28. }
    29. //Intialize the motor
    30. void MotorInit()
    31. {
    32.   int i;
    33.   for(i=0 ; i<2; i++)
    34.   {
    35.   pinMode(MotorLeft[i],OUTPUT);
    36.   pinMode(MotorRight[i],OUTPUT);
    37.   }
    38. }
    39. //Robot Driving Functions
    40. void Robot_Forward()
    41. {
    42.    digitalWrite(MotorLeft[0],0);
    43.    digitalWrite(MotorLeft[1],1);
    44.    digitalWrite(MotorRight[0],1);
    45.    digitalWrite(MotorRight[1],0);   
    46. }
    47. void Robot_Backward()
    48. {
    49.    digitalWrite(MotorLeft[0],1);
    50.    digitalWrite(MotorLeft[1],0);
    51.    digitalWrite(MotorRight[0],0);
    52.    digitalWrite(MotorRight[1],1);  
    53. }
    54. void Robot_Left()
    55. {
    56.   digitalWrite(MotorLeft[0],1);
    57.   digitalWrite(MotorLeft[1],0);
    58.   digitalWrite(MotorRight[0],1);
    59.   digitalWrite(MotorRight[1],0);    
    60. }
    61. void Robot_Right()
    62. {
    63.   digitalWrite(MotorLeft[0],0);
    64.   digitalWrite(MotorLeft[1],1);
    65.   digitalWrite(MotorRight[0],0);
    66.   digitalWrite(MotorRight[1],1);    
    67. }
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