Topic : How to make a Bluetooth controlled car using arduino and L293D motor driver.
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| BLUETOOTH CONTROLLED CAR |
Components :
(1) DC Geared Motor
(2) Arduino Uno
(3) L293D Motor Driver
(4) Bluetooth Module HC-05
(5) Jumper Wire
(6) Wheels
(7) 7.4V Lipo Battery
About the Components :
1. DC GEARED MOTOR : Geared DC motors can be defined as an extension of DC motor which already had its Insight details demystified here. A geared DC Motor has a gear assembly attached to the motor.This concept where gears reduce the speed of the vehicle but increase its torque is known as gear reduction.
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| DC GEARED MOTOR (300 RPM) |
2. ARDUINO UNO : This is a micro controller. It has the ATmega328p ic. Mainly C programming are used to control the arduino. To connect it with your computer it has Arduino IDE software.
3. L293D MOTOR DRIVER : L293D shield is a driver board based on L293 IC, which can drive 4 DC motors and 2 stepper or Servo motors at the same time. Each channel of this module has the maximum current of 1.2A and doesn't work if the voltage is more than 25v or less than 4.5v.
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| ARDUINO UNO |
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| L293D MOTOR DRIVER |
4. BLUETOOTH MODULE HC-05 : HC-05 Bluetooth Module is an easy to use Bluetooth SPP (Serial Port Protocol) module, designed for transparent wireless serial connection setup.HC-05 Bluetooth module provides switching mode between master and slave mode which means it able to use neither receiving nor transmitting data.
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| BLUETOOTH MODULE HC-05 |
5. JUMPER WIRE : A jump wire is an electrical wire, or group of them in a cable, with a connector or pin at each and ease of insertion on a breadboard allows increasing the mounting density of both components and jump wires without fear of short-circuits
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| JUMPER WIRE |
6. WHEELS : A blue color robotic wheel that is used in this project. The wheel has a diameter of 65 MM and has a width of 27 MM.
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WHEELS |
7. 7.4V LIPO BATTERY : A lithium polymer battery, or more correctly lithium-ion polymer battery (abbreviated as LiPo, LIP, Li-poly, lithium-poly and others), is a rechargeable battery of lithium-ion technology using a polymer electrolyte instead of a liquid electrolyte.
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| 7.4V LIPO BATTERY |
Procedure :
(1) Take the four geared dc motor and fix it in the four corners of the wooden board.
(2) Connect the shaft coupling with the shaft of the dc motor.
(3) Fix the wheels in the motor.
(4) Now take Arduino Uno, L293D motor driver and HC-05 Bluetooth module and make the connection as shown in the circuit diagram.
(5) Once you complete the connection open your Arduino IDE software and upload the code to the Arduino.
(6) Give the power supply to the motor driver by a 7.4V lipo battery.
(7) Now take your smartphone and download a software name "Bluetooth RC".
(8) Connect the "Bluetooth RC" with HC-05 module.
(9) Finally give the commands from your smartphone and run the car.
