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Matrix [4x4] Keypad interfacing with PIC Microcontroller [ PIC18f2550 ] in Proteus [Step by Step]

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Basically a matrix keypad[ 4x4] can be compared as a keyboard of microcontroller .The keypad contains 16 buttons .Internal architecture of keypad described below :

Taken from Internet

You can see the button's structure .Here each row is connected with ground through 10k ohm resistor . Now consider that A=1, B=0,C=0,D=0 and column A get +5v .At this situation , if you press button[A,E] , the E link get +5v .In this way for button[A,F] , F=+5v or 1, button[A,G] , G=1, button[A,H] , H= 1.

Listen , if we can make ABCD(1000) ,ABCD(0100),ABCD(0010), ABCD(0001) through a loop . Now any button pressed , we can uniquely identify the button .In this way the matrix keypad works .

Now Create a project in Proteus :

Proteus Project :

Please follow the steps

I am just trying to make easy for beginner .Now follow the instruction for pick parts from library .

Now pick PIC18F4550 microcontroller , 22pf capacitor ,crystal , LCD DISPLAY [LM016L] , keypad from proteus library .Now see the complete circuit given below :

Matrix [4x4] Keypad interfacing with PIC Microcontroller [ PIC18f2550 ] in Proteus [Step by Step]

Here i have connected each column with +5v instead of GND and now i am going to provide (1000) ,(0100),(0010),(0001) in each row respectively .So if any button is pressed we get 0 according to this.

Now We have completed the Circuit and create a project in MikroC .

MikroC Project :

If you are a beginner , please follow the steps given below :

Source Code :

(adsbygoogle = window.adsbygoogle || []).push({}); sbit LCD_RS at RB7_bit; sbit LCD_EN at RB6_bit; sbit LCD_D4 at RB5_bit; sbit LCD_D5 at RB4_bit; sbit LCD_D6 at RB3_bit; sbit LCD_D7 at RB2_bit; sbit LCD_RS_Direction at TRISB7_bit; sbit LCD_EN_Direction at TRISB6_bit; sbit LCD_D4_Direction at TRISB5_bit; sbit LCD_D5_Direction at TRISB4_bit; sbit LCD_D6_Direction at TRISB3_bit; sbit LCD_D7_Direction at TRISB2_bit; // End LCD module connections char ch[]=" "; int j=0,ak=0,i=0; void main() { ADCON1=0x0F; CMCON=7; TRISA.F0=1; TRISA.F1=1; TRISA.F2=1; TRISA.F3=1; TRISC.F0=0; TRISC.F1=0; TRISC.F2=0; TRISC.F4=0; Lcd_Init(); Lcd_Cmd(_LCD_CLEAR); // Clear display Lcd_Cmd(_LCD_CURSOR_OFF); delay_ms(200); j=0; while(1){ PORTC=0x00; LCD_Out(1,1,"Matrix Keypad"); ak=5; delay_ms(200); while (ak==5){ PORTC=0x01; // if(PORTA.F0==1 & PORTA.F1==0 & PORTA.F2==0 & PORTA.F3==0) { ak=2; Lcd_Chr(2,4,'7'); ch[j]='7'; j++; } if(PORTA.F0==0 & PORTA.F1==1 & PORTA.F2==0 & PORTA.F3==0) { Lcd_Chr(2,4,'4'); ak=2; ch[j]='4'; j++; } if(PORTA.F0==0 & PORTA.F1==0 & PORTA.F2==1 & PORTA.F3==0) { Lcd_Chr(2,4,'1'); ch[j]='1'; ak=2; j++; } if(PORTA.F0==0 & PORTA.F1==0 & PORTA.F2==0 & PORTA.F3==1) { Lcd_Chr(2,4,'C'); ch[j]='C'; ak=2; j++; } PORTC=0x02; if(PORTA.F0==1 & PORTA.F1==0 & PORTA.F2==0 & PORTA.F3==0) { Lcd_Chr(2,4,'8'); ch[j]='8'; ak=2; j++; } if(PORTA.F0==0 & PORTA.F1==1 & PORTA.F2==0 & PORTA.F3==0) { Lcd_Chr(2,4,'5'); ch[j]='5'; ak=2; j++; } if(PORTA.F0==0 & PORTA.F1==0 & PORTA.F2==1 & PORTA.F3==0) { Lcd_Chr(2,4,'2'); ch[j]='2'; ak=2; j++; } if(PORTA.F0==0 & PORTA.F1==0 & PORTA.F2==0 & PORTA.F3==1) { Lcd_Chr(2,4,'0'); ch[j]='0'; ak=2; j++; } ///////////////////////// PORTC=0x04; // if(PORTA.F0==1 & PORTA.F1==0 & PORTA.F2==0 & PORTA.F3==0) { Lcd_Chr(2,4,'9'); ch[j]='9'; ak=2; j++; } if(PORTA.F0==0 & PORTA.F1==1 & PORTA.F2==0 & PORTA.F3==0) { Lcd_Chr(2,4,'6'); ch[j]='6'; ak=2; j++; } if(PORTA.F0==0 & PORTA.F1==0 & PORTA.F2==1 & PORTA.F3==0) { Lcd_Chr(2,4,'3'); ch[j]='3'; ak=2; j++; } if(PORTA.F0==0 & PORTA.F1==0 & PORTA.F2==0 & PORTA.F3==1) { Lcd_Chr(2,4,'='); ch[j]='='; ak=2; j++; } ///////////////////////// PORTC=0x10; // if(PORTA.F0==1 & PORTA.F1==0 & PORTA.F2==0 & PORTA.F3==0) { Lcd_Chr(2,4,'/'); ch[j]='/'; ak=2; j++; } if(PORTA.F0==0 & PORTA.F1==1 & PORTA.F2==0 & PORTA.F3==0) { Lcd_Chr(2,4,'*'); ch[j]='*'; ak=2; j++; } if(PORTA.F0==0 & PORTA.F1==0 & PORTA.F2==1 & PORTA.F3==0) { Lcd_Chr(2,4,'-'); ch[j]='-'; ak=2; j++; } if(PORTA.F0==0 & PORTA.F1==0 & PORTA.F2==0 & PORTA.F3==1) { Lcd_Chr(2,4,'+'); ch[j]='+'; ak=2; j++; } } } }

Now follow the instructions, how to create .hex file and save .

Now go to Proteus and Run the Project .

In this way you will able to interface Keypad with Microcontroller .

Result Video :

(adsbygoogle = window.adsbygoogle || []).push({}); Download This Project [100% Working]

Thank You!

http://feeds.feedburner.com/microcontroller_for_beginners

Matrix [4x4] Keypad interfacing with PIC Microcontroller [ PIC18f2550 ] in Proteus [Step by Step]

(adsbygoogle = window.adsbygoogle || []).push({}); (adsbygoogle = window.adsbygoogle || []).push({});

Basically a matrix keypad[ 4x4] can be compared as a keyboard of microcontroller .The keypad contains 16 buttons .Internal architecture of keypad described below :

Taken from Internet

Listen , if we can make ABCD(1000) ,ABCD(0100),ABCD(0010), ABCD(0001) through a loop . Now any button pressed , we can uniquely identify the button .In this way the matrix keypad works .

Now Create a project in Proteus :

Proteus Project :

Please follow the steps

I am just trying to make easy for beginner .Now follow the instruction for pick parts from library .

Now pick PIC18F4550 microcontroller , 22pf capacitor ,crystal , LCD DISPLAY [LM016L] , keypad from proteus library .Now see the complete circuit given below :

Matrix [4x4] Keypad interfacing with PIC Microcontroller [ PIC18f2550 ] in Proteus [Step by Step]

Here i have connected each column with +5v instead of GND and now i am going to provide (1000) ,(0100),(0010),(0001) in each row respectively .So if any button is pressed we get 0 according to this.

Now We have completed the Circuit and create a project in MikroC .

MikroC Project :

If you are a beginner , please follow the steps given below :

Source Code :

Now follow the instructions, how to create .hex file and save .

Now go to Proteus and Run the Project .

In this way you will able to interface Keypad with Microcontroller .

Result Video :

(adsbygoogle = window.adsbygoogle || []).push({}); Download This Project [100% Working]

Thank You!

http://feeds.feedburner.com/microcontroller_for_beginners

#with #step by step #proteus #pic18 #mikroC #microcontrollers #microcontroller programming #microcontroller #microchip #membrane keyboard #matrix #keypad #key pad #interfacing #interface #How to

Microcontroller Tutorial for Beginners with step by step picture .Here in each tutorial every task described as good as possible .

Create Musical Tone Using Microcontroller[Step by Step ].In this tutorial , i will show how to create melody using microcontroller and in this tutorial i will use pic18f2550 microcontroller .So let's create a project in proteus .

#music tone #using #microcontroller #mikroc

mikroc pro for arm

Download mikroc pro for arm

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MikroElektronikaのmikroCにはソフトウェアI2Cがある。魅力的だ。

#MikroElektronika #mikroC

Quick Simulation on MikroC...

#MikroC #Debug

Matrix [4x4] Keypad interfacing with PIC Microcontroller [ PIC18f2550 ] in Proteus [Step by Step]

(adsbygoogle = window.adsbygoogle || []).push({}); (adsbygoogle = window.adsbygoogle || []).push({});

Basically a matrix keypad[ 4x4] can be compared as a keyboard of microcontroller .The keypad contains 16 buttons .Internal architecture of keypad described below :

Taken from Internet

Listen , if we can make ABCD(1000) ,ABCD(0100),ABCD(0010), ABCD(0001) through a loop . Now any button pressed , we can uniquely identify the button .In this way the matrix keypad works .

Now Create a project in Proteus :

Proteus Project :

Please follow the steps

I am just trying to make easy for beginner .Now follow the instruction for pick parts from library .

Now pick PIC18F4550 microcontroller , 22pf capacitor ,crystal , LCD DISPLAY [LM016L] , keypad from proteus library .Now see the complete circuit given below :

Matrix [4x4] Keypad interfacing with PIC Microcontroller [ PIC18f2550 ] in Proteus [Step by Step]

Here i have connected each column with +5v instead of GND and now i am going to provide (1000) ,(0100),(0010),(0001) in each row respectively .So if any button is pressed we get 0 according to this.

Now We have completed the Circuit and create a project in MikroC .

MikroC Project :

If you are a beginner , please follow the steps given below :

Source Code :

Now follow the instructions, how to create .hex file and save .

Now go to Proteus and Run the Project .

In this way you will able to interface Keypad with Microcontroller .

Result Video :

(adsbygoogle = window.adsbygoogle || []).push({}); Download This Project [100% Working]

Thank You!

http://feeds.feedburner.com/microcontroller_for_beginners

#mikroc

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