Multipurpose Small unmanned robot: a cost effective approach

A Gesture Controlled robot is a robot which can be controlled by your han

Project Title

Multipurpose Small unmanned robot: a cost effective approach

Project Area of Specialization

Robotics

Project Summary

A Gesture Controlled robot is a robot which can be controlled
by your hand gestures. You just need to have a small
transmitting device in your hand, which included an
acceleration meter to transmit an appropriate command to the
robot so that it can do whatever we want. The transmitting
device included an ADC for analogue to digital conversion
and an encoder IC(HT12E) which is used to encode the four-
bit data and then it will transmit by an RF Transmitter
module. At the receiving end, an RF Receiver receives the
encoded data and decoder IC decodes it. A microcontroller
processes this data, and the motor driver is used to control the
motors. As the user moves his hand, it senses, and it sends the signal for decision. The output from the accelerometer is
gathered for the process by a microcontroller. According to
the sensor output, the controller is made to work, and it sends
the respective signal to the motors. It uses two DC motors to
move, to drive them, one motor driver is IC used which
provides sufficient current to motors. All this material is
mounted on metal chassis. As we move our hand to the right
robot will move to

Project Objectives

Our gesture-controlled robot works based on accelerometer outputs, which correspond to hand movements and sends that data to a comparator which assigns specific voltage level to the movements. This information is transferred to an encoder which encodes it before RF transmission. On the other end,
the information is received wirelessly via RF. These
decisions are sent to the motor driver, which triggers the motors in specific configurations to make the robot move in different directions.

Project Implementation Method

Step 1: Materials Required

1. Arduino Uno
2. ADXL335 accelerometer
3. 433 MHz RF transmitter
4. Breadboard

For receiver and robot-

1. Arduino Uno
2. 433 MHz RF receiver
3. L293D motor driver IC
4. Chassis and wheels
5. 2 DC motors
6. Breadboard

Of course you will also need jumper wires and 9V batteries

Instead of using the Arduino and breadboard in transmitter like I did ,you may instead use an ATMega328p, which can be programmed from the Arduino board and solder it along with RF transmitter and ADXL335 on a perfboard.

The perfboard can then be attached to a glove.However here I've used a remote controller like setup with the gestures the same.

Step 2: Assembling the Robot

Fix the wheels on the chassis.

Mount the DC motors on the back wheels and use dummy wheels for the front.

Mount the L293D IC on the breadboard and place it on the chassis

Place the Arduino on the chassis and make the connections of L293D as follows

4,5,12,13 to GND

1,9,16 to VCC(5V)

3,6 to left motor(output)

11,14 to right motor(output)

2,7,10,15 to pins 8,9,10,7 of Arduino(inputs)

8 to 9V battery.

Step 3: Determining the Direction of Robot

You can learn more about L293D from internet.

Basically ,the motor rotates when the inputs supplied are opposite.

For example high,low may rotate the motor in clockwise while low,high in anti clockwise.

If both inputs are same then motor does not rotate.

The sketch in test.ino will help to determine for what inputs for the 2 motors will the robot move forward. Copy and paste the code in test.ino it in Arduino IDE

In my case it was observed that the bot will move forward pin 9 of Arduino is high,pin 8 is low(for left motor),pin 10 is high,pin 7 is low(for right motor).Try different combinations till you get desired direction. Similarly for moving back the combination is high,low,low,high.The bot will go right if left motor is moving and right is stopped by giving same inputs.Similarly for left.

Step 4: Interfacing ADXL335 With Arduino

Step 5: Interfacing RF Transmitter With Arduino

Step 6: The Receiver

Step 7: Run the Robot

Benefits of the Project

• Operation Of the system Is simple.
• The production cost of the robot is very low
• Low Maintenance is Required
• Operation Is Completely Wireless.
• Wireless Controlled Robots are very useful in many applications like Remote Surveillance military applications, Bomb Diffusion Robots, etc.
• Hand Gestures controlled robots can be used by Physically challenged in wheelchairs
• Hand Gesture controlled industrial grade robotic arms can be developed.
• These robots can also be used on construction Fields and civil works.

Technical Details of Final Deliverable

the project will deliver with all technical information

like,

how it work, how the components of robots is working, how to code the component and what is the purpose this robot. each and every thing will explain.

Final Deliverable of the Project

HW/SW integrated system

Core Industry

IT

Other Industries

Education , Transportation , Health , Security

Core Technology

Robotics

Other Technologies

Artificial Intelligence(AI)

Sustainable Development Goals

Good Health and Well-Being for People, Quality Education

Required Resources

If you need this project, please contact me on contact@adikhanofficial.com