Here
is a simple robotic vehicle that can be operated by using Bluetooth connection.
The Bluetooth module that is used here is HC-05 Master/Slave module. The robot
can be controlled using both Android smart phones and Computers via a serial
terminal.
}
For computers we can use Teraterm,
Putty, etc and for Android phones we can use Blueterm or a dedicated Robot
Control App (Several such apps are available in PlayStore).
Components Required:
1. Arduino Compatible Board – GR Sakura
2. HC-05
Bluetooth module
3. L293D
Motor Driver
4. DC motors and Wheels
5. Battery
4. DC motors and Wheels
5. Battery
Working:
Connect
power supply to the circuit. Open the serial terminal software/app after
turning On the Bluetooth – Teraterm/Putty in terms of computer or Blueterm in
terms of Android phones. Search for the HC-05 device and pair with it by giving
the default password of HC-05 ‘1234’. Below are the control signals,
8 – Move Forward
4 – Turn Left
6 – Turn Right
2 – Move Back
5 – Stop
Note – You can change the control
signals as you wish by changing the code
Code Structure:
#include 'rxduino.h'
#include 'iodefine_gcc63n.h'
char a;
int main()
{
Serial.begin(115200,SCI_SCI0P2x);
delay(1000);
/*
give the pin details here that controls the dc motors via L293D */
while(1)
{
if(Serial.available())
{
a=Serial.read();
if(a=='8')
{
/*
give the pin configuration to turn on the dc motors such that the robot moves
forward */
}
if(a=='4')
{
/*
give the pin configuration to turn on the dc motors such that the robot turns
left */
}
if(a=='6')
{
/*
give the pin configuration to turn on the dc motors such that the robot turns
right */
}
if(a=='2')
{
/*
give the pin configuration to turn on the dc motors such that the robot moves
backward */
if(a=='5')
{
/*
give the pin configuration to turn off the dc motors such that the robot stops
*/
}
}
}
}
Video Demo:
For info on L293D - Driving DC motors
For info on HC-05 - Interfacing HC-05
