At the expo

Final Product

Complications

Originally the Arduino was meant to power everything on the car. Unfortunatley too many complications with the remote controls we had lead to many problems. Our new code is simple, it just turns the dc motor on and off. Our remote control shifts into high gear on the car when the joystick is pushed forward, and low gear when it is pulled back. Left and Right controls are still controlling the steering.

New code

// named constants for the switch and motor pins
int motorPin =  9; // the number of the motor pin

void setup() {
  // initialize the motor pin as an output:
  pinMode(motorPin, OUTPUT);  
}
void loop() {
// turn motor on:
digitalWrite(motorPin, HIGH);
//analogWrite(motorPin, 100);
}

Code

#include <Servo.h>

Servo shifterServo;   // Create Servo object for sensor head servo

Servo steerServo;        // Create Servo object for second servo

const int LEDPin = 13;    //control pin for led indicator

const int DcMotorPin = 8; //control in for propulsion

int button1 = 1;

int button2 = 2;

int button3 = 3;

int button4 = 4;

void setup() {

  Serial.begin (9600);

  

  pinMode(LEDPin, OUTPUT);       // Use LED indicator (if required)

  pinMode(DcMotorPin, OUTPUT);

  pinMode(button1, INPUT);

  pinMode(button2, INPUT);

  pinMode(button3, INPUT);

  pinMode(button4, INPUT);

  shifterServo.attach(10);

  steerServo.attach(9);

  

  //shift into neutral and point straight ahead

  shifterServo. write (90);

  steerServo.write (90);

}

  

  

  //point straight

  

  void pointStraight(){

    steerServo.write (90);

  }

  

  // stopping

  void stopMotor() {

    Serial.println ("stopping");

    digitalWrite(DcMotorPin, LOW);

    digitalWrite(LEDPin, LOW);

  }

  

  // move forward

  void startMotor() {

    Serial.println ("Moving Forward");

    digitalWrite(DcMotorPin, HIGH);

    digitalWrite(LEDPin, HIGH);

  }

  

  //turn right

  void turnRight() {

    Serial.println("Turning Right");

    steerServo.write(30);

    digitalWrite(LEDPin, HIGH);

  }

  

  //turn left

  void turnLeft() {

    Serial.println("Turning Left");

    steerServo.write(160);

    digitalWrite(LEDPin, HIGH);

  }

  

  //shift high

  void shiftHigh(){

    Serial.println("Shifting High");

   shifterServo.write(75);

   digitalWrite(LEDPin, HIGH);

  }

  

  //shift low

  void shiftLow() {

    Serial.println("Shifting Low");

    shifterServo.write(105);

    digitalWrite(LEDPin, HIGH);

  }

  

  void loop() {

    

    //if throttle is opened

    if (button1 == HIGH){

      shiftHigh();

      startMotor();

    if (button2 == HIGH){

      shiftLow();

      startMotor();

    if (button3 == HIGH){

      turnRight();

    if (button4 == HIGH){

      turnLeft();

    }

    else{

      pointStraight();

    }

    }

    else{

      pointStraight();

    }

    }

    else {

      stopMotor();

    }

    }

    else {

      stopMotor();

    }

  }

      

Controls

27MHz

• Push joystick forward 
• Car moves forward in low gear
• Push joystick backward
• Car moves forward in high gear
• Left
• Car turns left
• Right
• Car turns right

Car prototype

New Project Idea

Decided to change our project from OBDII to a remote control car
Laser cut a body and axle holders
The car will be capable of

• moving forwards
• steering
• changing gears