This document describes a system that allows physically disabled people to drive a car by controlling the steering with neck movements. The system uses sensors around the neck connected to a microcontroller that controls motors to turn the steering wheel. This gives disabled people independent mobility without needing a driver. The system is affordable and reliable, allowing greater independence and quality of life for disabled users.

1. Ye
s
can I

2. Contents
Introduction
Block Diagram
Working
Advantages
Applications
Conclusion

3. Introduction
Now-a-days transportation has become great
difficulty to the individual to reach the destination on
time, every one are having their own vehicle.
 And the people with all body parts are fortunate but
when it comes to physically challenged people it’s
very unfortunate that the people with partially
disabled with hands can’t drive vehicle with the help
of steering.
In the Buses or Trains they are provided with
minimum reservation and which will be very
disappointing and they also don’t dare to buy a
vehicle and assist with a driver which will cost a lot .
So this project will be a great solution for them.

4. Block Diagram

5. Features of AT89S52
ROM - 8K bytes
RAM - 256 bytes
Timer - 3
I/O pins - 32
Serial port - 1
Interrupt sources - 8

6. PIN DIAGRAM
P1.0 1 40 Vcc
P1.1 2 39 P0.0(AD0
P1.2 3 38 P0.1(AD1)
)
P1.3 4 37 P0.2(AD2
P1.4 5 36 P
) 0.3(AD3)
P1.5 6 35 P0.4(AD4)
P1.6 7 34 P0.5(AD5)
P1.7 8 33 P0.6(AD6)
RST 9 AT89S52 32 P0.7(AD7)
(RXD)P3.0 10 31 EA/VPP
(TXD)P3.1 11 30 ALE/PROG
(INT0)P3.2 12 29 PSEN
(INT1)P3.3 13 28 P2.7(A15)
(T0)P3.4 14 27 P2.6(A14)
(T1)P3.5 15 26 P2.5(A13)
(WR)P3.6 16 25 P2.4(A12)
(RD)P3.7 17 24 P2.3(A11)
XTAL2 18 23 P2.2(A10)
XTAL1 19 22 P2.1(A9)
GND 20 21 P2.0(A8)

7. H-Bridge
Features Include :600 mA
Output Current Capability Per
Driver
Pulsed Current 1.2 A / Driver
Wide Supply Voltage Range: 4.5
V to 36 V
Separate Input-Logic Supply
NE Package Designed for Heat
Sinking
Thermal Shutdown & Internal
ESD Protection
High-Noise-Immunity Inputs

8. DC Geared Motor
Technical Specifications:
• 60RPM 12V DC motors with Metal Gearbox
• 25000 RPM base motor
• 6mm shaft diameter
• Gearbox diameter 37 mm.
• Motor Diameter 28.5 mm
• Length 63 mm without shaft
• Shaft length 15mm
• 300gm weight
• 38kgcm torque
• No-load current = 800 mA(Max), Load current =
upto 9.5 A(Max)


9. Lead Acid Battery
Specifications
12V 1.3Ah sealed lead acid battery
1. CE and RoHs
2. high quality and relaibility
3. miantenance free
4. long life cycle
12V 1.3Ah sealed lead acid battery

10. General Features:
Sealed and maintenance free operation.
Non-Spillable construction design.
ABS containers and covers(UL94HB, UL94-
0)optional.
Safety valve installation for explosion proof.
High quality and high reliability.
Exceptional deep discharge recovery
performance.
Low self discharge characteristic.

11. Working
The person who is driving car will be equipped with a
device which is placed around the neck of the person
who is driving the car which is helpful to move the
steering forward and reverse direction without any
physical or mental stress .
The project uses 2 geared motors of 60RPM to drive
the prototype of car.
Also this car can take sharp turnings towards left and
right directions.

12. This project uses AT89S52 MCU as its controller.
We are also using four switches in the circuit which
will be ON when the person will move neck forward
and backward.
This project uses 12V Lead Acid battery which drives
two DC motors with the help of H-Bridge Circuit.

13. Advantages
The physically handicap Person(hands disable) can
drive the car as usual as normal person
No need to assist by driver it will save money
Low cost
Reliable
Even normal person can drive a car .

14. Applications
Physically Handicapped people can drive car.

15. Conclusion
The project” Design and implementation of car
driving controller system for physically handicapped”
is designed, implemented and tested successfully ,
which is boon for PH Peoples. Who can expect the
same comfortable and luxurious life as normal people.