[Description]

- Geometric collision (in processing) triggers the DC motor as a haptic feedback.

- Connects the arduino board to a C++ based Racing Game.

- When the vehicle collides with an object, the DC motor vibrates.

[Components]

- DC Motor X 1

- 1.5V AA Battery X 2 

- Resistor X 2

- Transistor X 1

[Arduino Code]

int potPin = 2;   // select the input pin for the potentiometer
int motorPin = 11; // select the pin for the Motor
int val = 0;      // variable for the output value to the game (not used herein)
int m_val = 0;  // variable for the input value from the game
void setup() {
  Serial.begin(9600);
}
void loop() {
  m_val = Serial.read();
  if(m_val < 0 )
    m_val = 0;
  analogWrite(motorPin, m_val); // analogWrite to the motor can be between 0-255
  delay(50);
  Serial.println(m_val); 
}

[C++ Code (Partial)]

DWORD CCommThread::WriteComm(BYTE *pBuff, DWORD nToWrite) {
 DWORD dwWritten, dwError, dwErrorFlags;
 COMSTAT comstat;

 if (!WriteFile(m_hComm, pBuff, nToWrite, &dwWritten, &m_osWrite)) {
  if (GetLastError() == ERROR_IO_PENDING) {
   while (!GetOverlappedResult(m_hComm, &m_osWrite, &dwWritten, TRUE)) {
    dwError = GetLastError();
    if (dwError != ERROR_IO_INCOMPLETE) {
     ClearCommError(m_hComm, &dwErrorFlags, &comstat);
     break;
    }
   }
  }
  else {
   dwWritten = 0;
   ClearCommError(m_hComm, &dwErrorFlags, &comstat);
  }
 }
 return dwWritten;
}

[Image]

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