https://www.youtube.com/watch?v=e7m-GlvAk7k&feature=youtu.be

Step 1: Materials

 Arduino uno

 Wire

 Pin (male)

 A car (this is to taste and convenience of the user)

 A Bluetooth module (in this case using the modulo HT_06)

 Breadboard

 Two motors (preferably using the car engine brings)

 Arduino program (in which I got from a website) http://www.andrux.com.mx/apps/ArduiBot/

 Apk to manipulate the car from your android (cell phone with android 4 ice scream sandwish or later)

 Cell Phone

 H bridge (model is the L293D bridge preferably)

 a battery of 9.6V

 speaker cable

 barrel connector

Step 2: Diagram

http://andrux.com.mx/apps/ArduiBot/index.php/site/index

Step 3: Characteristics of Some Materials

Arduino uno
The Arduino Uno is a microcontroller board based on the ATmega328 (datasheet). It has 14 digital input/output pins (of which 6 can be used as PWM outputs), 6 analog inputs, a 16 MHz ceramic resonator, a USB connection, a power jack, an ICSP header, and a reset button. It contains everything needed to support the microcontroller; simply connect it to a computer with a USB cable or power it with an AC-to-DC adapter or battery to get started.

Arduino BT ( Bluetooth)
The Arduino BT is a microcontroller board originally was based on the ATmega168, but now is supplied with the 328 (datasheet) and the Bluegiga WT11 Bluetooth module.
It supports Wireless Serial communication over Bluetooth (but is not compatible with Bluetooth headsets or other audio devices). It has 14 digital input/output pins (of which 6 can be used as PWM outputs and one can be used to reset the WT11 module), 6 analog inputs, a 16 MHz Crystal Oscillator, screw terminals for power, an ICSP header, and a reset button.
This program already has the connection with Bluetooth module, but the module must be configured with another code which you find step by step on the internet, this is a reference in which we are guided to set our Bluetooth.
http://http://arduino.cc/es/Main/ArduinoBoardBluetooth

The L293D:
L293D is a dual H-bridge motor driver integrated circuit (IC). Motor drivers act as current amplifiers since they take a low-current control signal and provide a higher-current signal. This higher current signal is used to drive the motors.
L293D contains two inbuilt H-bridge driver circuits. In its common mode of operation, two DC motors can be driven simultaneously, both in forward and reverse direction. The motor operations of two motors can be controlled by input logic at pins 2 & 7 and 10 & 15. Input logic 00 or 11 will stop the corresponding motor. Logic 01 and 10 will rotate it in clockwise and anticlockwise directions, respectively.