Arduino arabanızı telefonla sürün.

#include <SoftwareSerial.h>

SoftwareSerial bt(10, 11); // RX, TX to the HC-05

void setup() {
  bt.begin(9600);
}

void loop() {
  if (!bt.available()) return;
  int c = bt.read();

  switch (c) {
    case 'F': forward(); break;
    case 'B': back(); break;
    case 'L': left(); break;
    case 'R': right(); break;
    case 'S': stop(); break;
    case 'W': frontLights(HIGH); break;
    case 'w': frontLights(LOW); break;
    default:
      if (c >= 0 && c <= 9) setSpeed(map(c, 0, 9, 0, 255));
  }
}