how to make a gesture control robot at home

Welcome to the Techatronic Guys, In this article, we will learn how to make a Gesture control robot at home. if you wanna learn how to make it carefully read the full article. this is the most interesting and popular project nowadays in electronics and engineering, many of the students from college and school making this awesome project. the interesting thing is that this is a wireless robot that you can control by just your hand gesture. we will learn in this project many things such as Bluetooth communication, master-slave communication, serial communication, how to interface Bluetooth and the accelerometer sensor with the Arduino, how to make circuit diagrams and how to write the code.

How does gesture control car work?

Gesture control robot with Arduino totally controlled by the Arduino which gets the instruction by another Arduino with serial communication. there are two parts in this project one is known as the transmitter and another is known as the receiver. here the work of both is different. so we will start with the transmitter first and then the receiver. we are using master-slave communication in Arduino gesture control robot. there are many other Bluetooth control Arduino projects you should check Bluetooth Rc car. this is an awesome project.

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Transmitter:-

The transmitter in this project the master circuit which will transfer the data to another module. we make the system master-slave communication. one Bluetooth will work as a master and another will work as a slave. so the master will give instruction to the slave one and the slave receive the instruction from the master and send all instruction to the Arduino attached. the transmitter contains Arduino, Bluetooth HC-05, Accelerometer. general-purpose PCB.

The accelerometer detects the variation in the acceleration on all axis. so, we put the accelerometer on our hands and then relate it to the gestures to make the gesture control robot. there will many reading changes in each direction and we will use these readings to make the condition in the Arduino to take a decision. gesture control robot using Arduino is very simple. for example, if you tilt your hand in the right direction the Arduino sends left to the slave device and the slave will start to move in the right direction. all the directions in the robot will define the same. 

Receiver:- 

The receiver is the most important part of the Gesture control robot using Arduino. it will receive the information by Bluetooth communication and send it to the Arduino then according to the database in the Arduino it will take the decision. so there is an L298 motor driver connected to the Arduino which converts the low output signal into the high voltage signal so that the driver can drive the motors. in this receiver, the Bluetooth works as a slave and follows the instruction of the master. and it can’t connect to another Bluetooth.

Components Required

• Arduino UNO
• Arduino cable
• Bluetooth Module HC-05
• Jumper Wires
• Breadboard
• BO Motor
• Wheel
• Chassis
• L298N Motor Driver
• 12V Battery

S.No	Component Required	Quantity	Buy Link
1.	Arduino UNO	2	https://amzn.to/3ue2vmh
2.	Arduino UNO Cable	2	https://amzn.to/3obXjht
3.	Bluetooth HC-05	2	https://amzn.to/2YvHaZx
4.	L298N Motor Module	1	https://amzn.to/3CSzX4L
5.	Accelerometer	1	https://amzn.to/3uWsYEW
6.	BO motor & Wheel	2	https://amzn.to/3AssCaA
7.	BO motor	2	https://amzn.to/2YDsGXQ
8.	Wheel	2	https://amzn.to/3mx1Zw6
9.	Chassis	1	https://amzn.to/3oI9jYk
10.	On-Off Switch	1	https://amzn.to/3Fg3bN0
11.	9 Volt Battery	1	https://amzn.to/3zUDj5l
12.	12 Volt Battery	1	https://amzn.to/3F3DizQ
13.	Jumper Wire	40	https://amzn.to/39q43jr
14.	Breadboard	1	https://amzn.to/39vsRX2

Gesture Control Robot Circuit Diagram:-

As you can see the two diagrams in the above picture. one is for the transmitter and another is for the receiver. make this both circuit separately.

Arduino UNO	HC-05 Bluetooth
( +5V )	VCC
GND	GND
D3 Pin	RX Pin
D2 Pin	TX Pin
Arduino UNO	9 & 12 V Battery	Motor Driver
	Positive	+12 Volt
( +5V )		+5 Volt
GND	Negative	GND
D 10 Pin		IN 1
D 11 Pin		IN 2
D 12 Pin		IN 3
D 13 Pin		IN 4
Motor 1, 2	Motor 3, 4	L298N Motor Driver
Terminal 1		Terminal 1 Output
Terminal 2		Terminal 2 Output
	Terminal 1	Terminal 3 Output
	Terminal 2	Terminal 4 Output

Arduino UNO	HC-05 Bluetooth
( +5V )	VCC
GND	GND
D3 Pin	RX Pin
D2 Pin	TX Pin
Arduino UNO	3 Axis Accelerometer
( +5V )	VCC
GND	GND
A0 Pin	X
A1 Pin	Y

Now we are also giving the code for both.

Gesture control robot Arduino Code.

Receiver code.

//Receiver code 
//all the best
#include<SoftwareSerial.h>
SoftwareSerial mybt(2,3);
char m=0,n=0;

void setup() {
pinMode(10, OUTPUT);
pinMode(11, OUTPUT);
pinMode(12, OUTPUT);
pinMode(13, OUTPUT);
Serial.begin(9600);
mybt.begin(9600);
}

void loop() {
if(mybt.available()>0)
{
m= mybt.read();
Serial.println(m);
if(m=='F')

{
digitalWrite(10, HIGH);
digitalWrite(11, LOW);
digitalWrite(12, HIGH);
digitalWrite(13, LOW);

}

else if(m=='B')

{
digitalWrite(10, LOW);
digitalWrite(11, HIGH);
digitalWrite(12, LOW);
digitalWrite(13, HIGH);

}

else if(m=='R')

{
digitalWrite(10, LOW);
digitalWrite(11, HIGH);
digitalWrite(12, HIGH);
digitalWrite(13, LOW);

}
else if(m=='L')

{
digitalWrite(10, HIGH);
digitalWrite(11, LOW);
digitalWrite(12, LOW);
digitalWrite(13, HIGH);

}

else if(m=='N')

{
digitalWrite(10, LOW);
digitalWrite(11, LOW);
digitalWrite(12, LOW);
digitalWrite(13, LOW);

}
else

{
digitalWrite(10, LOW);
digitalWrite(11, LOW);
digitalWrite(12, LOW);
digitalWrite(13, LOW);

}

} }

Transmitter Code.

//transmitter code 
//all the best
#include
SoftwareSerial mybt(2,3);
int m=0, n=0;

void setup() {

pinMode(A0, INPUT);
pinMode(A1, INPUT);
mybt.begin(9600);
Serial.begin(9600);
}

void loop() {
m = analogRead(A0);
n = analogRead(A1);

//Serial.println(m);
//delay(500);
//Serial.println(n);
//delay(500);

if(n>=375)

{
mybt.write("F");
Serial.println("F");

}

else if(n<=320) { mybt.write("B"); Serial.println("B"); } else if(m>=375)
{
mybt.write("R");
Serial.println("R");

}

else if(m<=315)
{
mybt.write("L");
Serial.println("L");

}

else
{
mybt.write("N");
Serial.println("N");

}
}

Upload the code into the transmitter and receiver by the Arduino IDE.

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