382.Robot Car controlled by a mobile phone using a G-Sensor and Arduino In this project, we will use a mobile phone's G sensor to control a robot car and you will be able to tilt the phone to control it. The G-Sensor Controlled Robot will also be controlled by Arduino and the RemoteXY app. A smartphone app called RemoteXY is used to control the Robot from the Smartphone. It will also be possible to control Robot by both tilting the phone and the joystick when the interface has a joystick. Gravity sensors or Gravity sensors are acceleration sensors in smartphones that allow them to know the screen orientation. As the Gravitational force moves in X, Y, Z directions, the accelerometer senses how the screen rotates in accordance with it. In modern mobiles, the orientation of the screen is determined by a Gyroscope sensor that is a lot more sensitive and accurate. The Robot car in this project will follow the angle that the phone is tilted in. For example, if we tilt the phone forward then it will move forward. The car will then move backward when the tilt is lowered. A G sensor is used in most car games in Mobile, too, so the car moves accordingly.

Two-wheel robot car chassis Arduino UNO L298N Motor Controller HC-06 Bluetooth module (HC-05 will work too) Power supply or Cells, Connecting wires

You will need to access the following link in order to create the interface for controlling the robot car with RemoteXy.

http://remotexy.com/en/editor/ the webpage will look like this

Put the switch button and joystick into the mobile interface from the left side of the screen. By pressing the button, you'll turn on Pin 13 on the Arduino, which is internally connected to the car, and by pressing the joystick, you'll control it. After you have placed the switch and joystick, you will see the following webpage.

After that, we will need to connect the G sensor enable/disable button to the joystick, to enable us to move the Robot Car with the phone by tilting it left, right, up and down. The G sensor can be turned on and off using that button, and the car can be controlled using the joystick when the G sensor is disabled. Click the joystick you placed on the interface to place the G sensor enable/disable button. You will see the properties section on the left, and at the end, there is an option to place the G sensor button near the joystick, so

you can place it wherever you like. This is what the webpage will look like after this. You should then click the "Get source code" button and save it on your computer. Download the library from here http://remotexy.com/en/library/ and save it into the Arduino library directory. Make sure that the downloaded code is error-free by compiling it. These are not the actual Robot code, but rather the code that helps to utilize the Arduino with the App. Download the app from here http://remotexy.com/en/download/ or. You can download RemoteXY from the Google Play Store on your Android smartphone.

The L298N motor controller needs to be interfaced with the Arduino first. Motor controller pin ENA and ENB should be connected to Arduino pins 12 and 11, respectively. The motor can be controlled with these two pins via

PWM. Our car can be sped up or slowed down using these pins. To connect the IN1, IN2, IN3 and IN4 to the Arduino pins 10, 9 and 8, follow the steps below. The motors will rotate both clockwise and anticlockwise with these pins. Battery positive and negative should be connected to 12V and ground on the motor controller to power the motor. To connect the Arduino to the motor controller, connect the motor controller's 5V and ground lines to the Arduino Vin and ground lines. If you have an HC-06, you can connect it to the Arduino, but if you have an HC-05, it will work too. The 5V and ground of the Bluetooth module should be connected to the Arduino's 5V and ground. After that, connect the RX pin of the Bluetooth Module to pin 3 of the Arduino and the TX pin to pin 2 of the Bluetooth Module. You can also learn about Bluetooth controlling a toy car with an Arduino using Bluetooth Controlled Toy Car.