DIY RC Car

[Todd]

[Project]

Web-based car control with PHPoC Shield for Arduino



[Items]

1. Arduino Uno
2. PHPoC Shield for Arduino
3. 2A Motor Shield for Arduino
4. 9V Battery Holder
5. DIY RC Car Kit


[Installation]






[How it works]

1. Connect PHPoC Shield for Arduino on your Arduino
2. Connect USB wireless LAN dongle to the shield for using WLAN
3. Access to the shield's web page and control your RC car in "Web Remote Control / Slide" application


[Demo Video]

[Source Code]

#include "SPI.h"
#include "Phpoc.h"

PhpocServer server(80);

char slideName;
int slideValue;

int pwm_a = 5;
int pwm_b = 6;
int dir_a = 4;
int dir_b = 7;

void setup() {

  pinMode(pwm_a, OUTPUT);  //Set control pins to be outputs
  pinMode(pwm_b, OUTPUT);
  pinMode(dir_a, OUTPUT);
  pinMode(dir_b, OUTPUT);

  analogWrite(pwm_a, 0);  //set both motors to run at (100/255 = 39)% duty cycle (slow)
  analogWrite(pwm_b, 0);  

  Serial.begin(9600);
  while(!Serial)
    ;

  Phpoc.begin(PF_LOG_SPI | PF_LOG_NET);
  //Phpoc.begin();

  server.beginWebSocket("remote_slide");

  Serial.print("WebSocket server address : ");
  Serial.println(Phpoc.localIP());  
}

void loop() {
  // wait for a new client:
 PhpocClient client = server.available();

  if (client) {
    String slideStr = client.readLine();

    if(slideStr)
    {
      slideName = slideStr.charAt(0);
      slideValue = slideStr.substring(1).toInt();

      Serial.print(slideName);
      Serial.print('/');
      Serial.println(slideValue);

     if(slideName == 'A'){

          Serial.println(slideValue);

          if(slideValue < 0) {
            digitalWrite(dir_a, HIGH);            
            slideValue = slideValue * -1 * 255 / 100;
          } else {
            digitalWrite(dir_a, LOW);    
             slideValue = slideValue * 255 / 100;      
          }
              Serial.println(slideValue);          
              analogWrite(pwm_a, slideValue);          
      }    

     if(slideName == 'B'){

          Serial.println(slideValue);

          if(slideValue < 0) {
            digitalWrite(dir_b, HIGH);            
            slideValue = slideValue * -1 * 255 / 100;
          } else {
            digitalWrite(dir_b, LOW);    
             slideValue = slideValue * 255 / 100;      
          }          
             Serial.println(slideValue);          
             analogWrite(pwm_b, slideValue);            
      }    
    }
  } 

}