PIC MICROCONTROLLER based traffic light control

Hi friends today we make a traffic light control based on PIC 12F675.to make this project we need electronic components given blow.

ELECTRONIC COMPONENTS

1. PIC 12F675 microcontroller 
2. power supply 5V
3.3 Resistance (100 - 1K ohm)
4.3 LEDs (Red,Yallow and Green)

PIC 12F675 based traffic light control circuit diagram

microc code for project

" void main()
{
TRISIO = 0x00;          // pins select as o/p

 while(1)               // infinit loop
 {
 GPIO.F0 = 1;           // active RED LED
 delay_ms(5000);        //for 5sec.
 GPIO.F1 = 1;           // active YELLOW LED
 delay_ms(2000);        //for 2sec.
 GPIO.F2 = 1;           // active GREEN LED
 delay_ms(5000);        //for 5sec.
 }
} "

by using this code the red led active for 5sec. and yellow led for 2sec and green led for 5sec.

7805 Regulator Based power supply

HI Friends,Now We make a power supply for PIC microcontrollers using 7805 regulator.for making power supply we need some components given blow.

                    1.General purpose PCB.
                    2.Transformer (center tap) 12-0-12.
                    3.2 Diode 1N4007.
                    4.Regulator 7805.
                    5.Capacitor (220uF ,0 . 01 uF )

CIRCUIT DIAGRAM OF POWER SUPPLY

working:- 

The Transformer and rectifier circuit give output 12V DC and than the regulator 7805 ( i/p 7-24V, o/p is 5V) give output 5V. now we can use this circuit as power supply for micontroller.