Created June 28, 2024

Automatic Room Light Controller Using PIC Microcontroller

The Project , 'Automatic Room Light controller' controls a room light as well as count the number of persons entering and leaving a room.

Things used in this project

Hardware components

Liquid Crystal Display (LCD)

Microcontroller PIC16F877A

um790 mini pc

Relayr WunderBar

M5Stack PIR Sensor Human Body Infrared PIR Motion Sensor (AS312)

Software apps and online services

MikroC for PIC compiler

ISIS Proteus-8 software

AMD Ryzen software

Story

The Project ‘Automatic Room Light Controller Using microcontroller PIC16f877A and bidirectional visitor counter’ controls a room light as well as count the number of individuals entering and leaving a room. When an individual enters into a room then one counter is incremented by one and one light in a room will be switched ON and when the individuals leaves a room then the counter is decremented by one. Lights will turn OFF when all the individuals go out of a room. The total number of individuals present inside a room is also displayed on the LCD display. IR sensors and microcontroller does above job. IR sensors sense the obstruction and microcontroller receives the signals produced by the obstruction from the sensors. The received signal is operated via program stored in ROM of Microcontroller.

The design and simulation of automatic room light controller with visitor counter is used to develop a smart system which provide energy efficient and automatically controlled room lighting, in addition to it help us to count the number of person present in the room, open and close the door without human involvement. This project up on completion and successful implementation play a crucial role in:

Various rooms like seminar hall, conference hall where the capacity of room is limited and should not be exceeded by displaying the actual number of persons inside the room

A. Class rooms, study rooms in colleges, to take count the accurate number of students in the classroom and control the room light accordingly.

B. Our homes because many times we come out of our bedroom or any other room and we forgot to turn off the room light.

C. Cinema halls to count the number of person entering inside. So that these places should not get over crowded to avoid congestion.

Figure 1 final circuit of automatic room light controller using pic16f877a microcontroller

Figure 2 system response schematic of the designed system when LDR lighted.

Figure 3 system response schematic of the designed system when on LDR no lighted

Code

Program Name: AUTOMATIC ROOM LIGHT CONTROLLER USING PIC MICROCONTROLER

/*Program Name: AUTOMATIC ROOM LIGHT CONTROLLER USING PIC MICROCONTROLER */
/* Name of Author: Yonas Kelem */

/* MEKELLE UNIVERSITY student */


/*	*/

/* the code displays status of room occupancy in a controlled room. Based on the count and status of the infrared sensor output, the lights are switched on and off automatically and the status of the room occupancy is shown on the LCD and also open-close the door.   */
/*	*/

sbit LCD_D7 at RB2_bit; 
sbit LCD_D6 at RB3_bit; 
sbit LCD_D5 at RB4_bit; 
sbit LCD_D4 at RB5_bit; 
sbit LCD_EN at RB6_bit; 
sbit LCD_RS at RB7_bit;
sbit LCD_D7_Direction at TRISB2_bit; 
sbit LCD_D6_Direction at TRISB3_bit; 
sbit LCD_D5_Direction at TRISB4_bit;
sbit LCD_D4_Direction at TRISB5_bit; 
sbit LCD_EN_Direction at TRISB6_bit; 
sbit LCD_RS_Direction at TRISB7_bit;
 
//************************SENSIN/OUT **************** int x[]={12,6,3,9};
int s1=0,s2=0,count=0,light=0,i,j;
unsigned short int D0,D1,D2; 
void lcd_disp(int y)
{
lcd_out(2,1,"people in="); 
D0=y%10; 
D1=(y/10)%10; 
D2=(y/100);
Lcd_Chr_cp(D2+48); 
Lcd_Chr_cp(D1+48); 
Lcd_Chr_cp(D0+48);
}
void rotation_90()
{
for(i=0;i<50;i++)
{
portd.f6=1; 
delay_us(1500); 
portd.f6=0; 
delay_us(18500);
}
}
void rotation_180()
{
for(i=0;i<50;i++)
{
portd.f6=1; delay_us(220); 
portd.f6=0;
 
delay_us(17800);
}
}
void door_open()
{
delay_ms(200); rotation_90();
}
void door_close()
{
rotation_90(); 
delay_ms(200); 
rotation_180();
}
void main()
{
ADC_Init(); Lcd_Init();
Lcd_Cmd(_LCD_CLEAR); 
Lcd_Cmd(_LCD_CURSOR_OFF); 
lcd_out(1,1,"Automatic RLC");
trisb=0;
trisa=1; 
trisc=1; 
trisd=0;
portd=0; 
portb=0; 
while(1)
{
light=Adc_read(0)/204.6;
door_open();
 
if(portc.f2==1&&s1==0)
{ s1=1;
door_open();
}
if(portc.f2==0&&s1==1)
{ s1=0;
door_close(); 
count=count+1; 
lcd_disp(count);
}
if(portc.f3==1&&s2==0)
{
  s2=1;
if(count==0)
{
count=0;
}
else
{
door_open();
count=count-1;
}
lcd_disp(count);
}
if(portc.f3==0&&s2==1)
{ s2=0;
door_close();
}
 
if(light<=3&&count>0)
{
portd.f7=1;
}
else
{
portd.f7=0;
}
}
}

Credits

Yonas Kelem gebreslassie

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Automatic Room Light Controller Using PIC Microcontroller

Things used in this project

Hardware components

Software apps and online services

Story

Schematics

automatic room light controller using PIC16f877A_microcontroller

Code

Program Name: AUTOMATIC ROOM LIGHT CONTROLLER USING PIC MICROCONTROLER

Credits

Yonas Kelem gebreslassie

Comments

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Automatic Room Light Controller Using PIC Microcontroller

Automatic Room Light Controller Using PIC Microcontroller

Things used in this project

Hardware components

Software apps and online services

Story

Schematics

automatic room light controller using PIC16f877A_microcontroller

Code

Program Name: AUTOMATIC ROOM LIGHT CONTROLLER USING PIC MICROCONTROLER

Credits

Yonas Kelem gebreslassie

Comments