Bleutooth-controlled-car

This project is developed for the users to control a Car through Bluetooth. The user can control different movements like forward, backward, left and right plus to enable/disable the auto-control mode. The Bluetooth receiver is connected with a phone. An application is used to operate the transmission.
First the transmitter and the receiver are synchronized. When the user presses a specific button on the application interface, the Bluetooth receiver implemented on the motor shield receives the signal and accordingly send the information to the Arduino UNO microcontroller which sends back the order to the motor shield.
The motor shield controls the operation of the Car through external electronic circuit. The circuit is used as a switch to operate the particular motor in the Car. By this way the user can control any of the operations of the Car. In the auto-control mode the Car uses an Ultra-Sensor to detect obstacles and moves left or right to avoid them.

Hardware Specifications:

List of Hardware :

• Arduino UNO card
• Motor shield
• Bluetooth module
• Car chassis
• Ultrasensor
• Wires
• Resistor

General circuit:

Hardware interfaces :

Arduino UNO :

• Pins : 8 → 13 to communicate with the motor shield.
• Pins : 6 and 7 for the Ultrasensor.
• Serial(Tx/Rx) : for communication with the Bluetooth.

Car movements specifications :

Manuel Controlling :

The car in this mode is controlled using orders given from user through the android application.
The list of orders :
Start, forward, backward, left, right, stop.

Auto-Driving mode :

In this mode the car uses the ultrasensor to detect obstacles and avoid them
System Variables : Distance = duration * 0.034 / 2
Safe distance : 10cm