Multipurpose Small unmanned robot: a cost effective approach

Project Title

Multipurpose Small unmanned robot: a cost effective approach

Project Area of Specialization RoboticsProject Summary

A Gesture Controlled robotis arobot which can be controlled
byyourhandgestures.Youjustneedtohaveasmall
transmittingdeviceinyourhand,whichincludedan
acceleration metertotransmit an appropriate command to the
robot so that it cando whatever we want. The transmitting
device includedanADC for analogueto digital conversion
and an encoder IC(HT12E) whichis usedto encode thefour-
bitdata and then it will transmitby an RF Transmitter
module. At the receiving end,an RF Receiverreceives the
encoded data anddecoder ICdecodes it.A microcontroller
processes this data,andthemotordriveris usedto control the
motors. Astheusermoveshis hand,it senses,anditsends the signal for decision.The output fromtheaccelerometer is
gathered fortheprocess byamicrocontroller.According to
thesensor output, the controller is made to work,and it sends
the respective signal tothemotors. It uses twoDCmotors to
move,to drive them,one motor driver is IC used which
provides sufficientcurrent to motors. All this material is
mounted on metalchassis. As we move our hand totheright
robot will move to

Project Objectives

Ourgesture-controlledrobot worksbased onaccelerometer outputs, whichcorrespond tohand movements and sendsthat data toacomparator whichassignsspecificvoltage level to themovements. Thisinformation istransferred to an encoder whichencodes it beforeRF transmission. On theotherend,
theinformationisreceivedwirelesslyviaRF.These
decisions aresentto the motor driver,which triggers the motors inspecificconfigurations to makethe robot move in differentdirections.

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 systemCore Industry ITOther Industries Education , Transportation , Health , Security Core Technology RoboticsOther Technologies Artificial Intelligence(AI)Sustainable Development Goals Good Health and Well-Being for People, Quality EducationRequired Resources

Item Name	Type	No. of Units	Per Unit Cost (in Rs)	Total (in Rs)
			Total in (Rs)	63734
TT gear motor	Equipment	4	700	2800
Rubber wheel	Equipment	4	1450	5800
car body	Equipment	4	1500	6000
motor driver doal	Equipment	4	1500	6000
Female connector	Equipment	4	100	400
male connector	Equipment	4	100	400
vthasonic sensor	Equipment	4	300	1200
Ardiono nano	Equipment	3	2200	6600
NRFz4Lo1 module	Equipment	4	950	3800
ADXL335 module	Equipment	3	1100	3300
gloves	Equipment	4	1500	6000
bettry holder	Equipment	2	150	300
charge able bettry li-ion	Equipment	3	1600	4800
screw terminal	Equipment	4	100	400
connect power wire	Equipment	3	50	150
camera mini	Equipment	3	1000	3000
Li-ion bettry charging module	Equipment	2	500	1000
led camera display	Equipment	3	1700	5100
jumper wire	Equipment	4	320	1280
solidring iron	Miscellaneous	3	1000	3000
tool box mini	Miscellaneous	2	1202	2404