Circuit Diagram and the Components

This is the circuit diagram for the Electromechanical Wheelchair. It contains two power window motor with 24Watt, a 12V DC car battery, seven relays, four push buttons and a 9V DC battery. This circuit explains about forward and reverse function of the motors. 

Four push buttons for the controller circuit which conduct with a maximum current of 1.5A.

Relay with 5V ratings.

Power window motor with a power rating approximately 24Watt. Input voltage and current is 12V and 2A respectively.

A 12V DC car battery as the main source for the power window motor.

A 9V DC battery is used to supply the voltage to the push buttons.

20.04.2011 (Engineer's Day)

19.04.2011

12.4.2011

10.4.2011

3.4.2011

Fixing components(2) (12.03.2011)

gear, chain and motor

12V DC MOTOR

manage to stick the motor to the chair

the completed motor and chains

another welding for putting the battery and circuit

measuring how large the battery is going to be

side 1

side 2

side 3

detailed motor with the chain

Completion of micro-controller program for the PIC16f877A (21.02.2011)

DECLARE THE INPUTS AND THE OUTPUTS

MAIN FUNCTIONS (UP, DOWN, LEFT AND RIGHT)

PIC16f877A, SWITCHES AND LEDS

 

FORWARD ( LIGHTING TWO LED'S TO REPRESENT THE RELAYS)

REVERSE ( LIGHTING THE OTHER TWO LED'S)

TURN LEFT ( TURN ON THE RIGHT MOTOR BY SUPPLYING CURRENT TO THE FIRST RELAY)

 

TURN RIGHT ( TURN ON THE LEFT MOTOR BY SUPPLYING CURRENT TO THE SECOND RELAY)