pic16f877a Keypad |
 |
Are you looking for?:
pic16f877a with keypad , pic16f877a and pic16f877a spi , keypad code , keypad 4x4
pic16f877a with keypad , pic16f877a and pic16f877a spi , keypad code , keypad 4x4
138 Threads found on edaboard.com: pic16f877a Keypad
hello there i just want to seek help how to make a password database to be written in eeprom of pic16f877. in our project we need at least ten members and have a password each. its a 6-digit password and can be modified. pls help im a newbie in pic.
thanks
Microcontrollers :: 20.08.2005 19:35 :: juncarl143 :: Replies: 4 :: Views: 2107
Dear all,
?C:pic16f877a
compiler:PCW C compiler
keypad:4 x 4
language: PIC C (c programming)
Do anyone have the sample code on how to program the keypad?
How to read the input from keypad?
Thanks.may u all be well and happy
Microcontrollers :: 23.12.2005 15:56 :: canthuceace :: Replies: 1 :: Views: 1599
hey, anybody here who can help me build a schematic design in interfacing an Analog IC AD9850 to a pic16f877a.. I really am having difficulties on the biasing/connecting the AD9850 as well as other components that the AD9850 might need to function properly..
I'm a newbie in this hobby.. I'm planning to build a signal generator with the AD9850 c
Hobby Circuits and Small Projects Problems :: 17.02.2006 02:43 :: naj.cuizon :: Replies: 7 :: Views: 4003
Just any 40-pins mcu, pic16f877a will do.
All these may not be perfect solution.
Like, a parallel to serial interface may also do the job, but I am not sure if that is alright for a scanning keypad arrangement.
Wait for more feedback from other experts reading this Forum, maybe.
John
Microcontrollers :: 23.06.2006 08:33 :: TechToys :: Replies: 3 :: Views: 1579
help me.. i need some example for programing lm628 with pic16f877a..
Robotics and Automatics Forum :: 29.01.2009 14:25 :: inifinitrix :: Replies: 45 :: Views: 19787
Hello all,
I would like suggestions/advices/tips for making a gamepad with pic16f877a controller. I am planning to have atleast 20 buttons and 2 or 4 potentiometers(Joystick) for the gamepad with USB interface.
So, Can anyone tell me is this is possible with pic16f877a.
Secondly, Where can I find information about writing an USB interface for
Microcontrollers :: 13.12.2006 17:27 :: latecomer :: Replies: 2 :: Views: 721
Can u plz send the code to ankur.rustagi12@gmail.com
i m suing pic16f877a and interfacing 20x4lcd+ 4x4 keypad
the project wud b like simple menu based sytem..
a menu will apear on tyhe lcd screen and user selcets a option from the menu.
thats it.
plz send it it is my final yr project and i have only 1 week eft to co
Microcontrollers :: 17.05.2009 10:31 :: ankur_rustagi12 :: Replies: 12 :: Views: 11907
How is it possible to connect the transmitter module(TLP434A) from laipac to the pic16f877a? And how can i program the PIC to generate pulses using a 4Mhz external clock?
Microcontrollers :: 05.07.2007 16:42 :: tschen :: Replies: 9 :: Views: 1631
for pic16f877a. Help me with the coding please
Microcontrollers :: 06.07.2007 16:46 :: tschen :: Replies: 3 :: Views: 1483
hey guys... currently im doing my project to invent a "Miniature digital pin number lock" using pic16f877a which consist of 4x4 keypad and 2x16 LCD as well as a Servo Motor to act as a lock...
I really need someone to help me in programming according to the flow chart below as I dont know how to start.... Im using Mikro C Compiler...
Hope som
Microcontrollers :: 03.09.2007 21:21 :: jasonlce :: Replies: 4 :: Views: 1382
I'm use the pic16f877a as my project. The problem i was faced is i can't get the value through the LCD (HD44780) when press the keypad (4x3). If can i'm want use the mickroC software to do it.
Thanks......
Regards
Kevin
Added after 20 minutes:
Thanks MrChips for ur replying.....
The website u recommend
Microcontrollers :: 21.01.2008 19:10 :: hoo99 :: Replies: 13 :: Views: 3829
sorry....
I'm use the pic16f877a as my project. The problem i was faced is i can't get the value through the LCD (HD44780) when press the keypad (4x3). So, any one have mickroC coding for me as a refrence or trying....
Thanks......
Regards
Kevin
Microcontrollers :: 21.01.2008 18:42 :: hoo99 :: Replies: 7 :: Views: 3777
you can; pic16f877a has some EEPROM you can store your data even when power is removed. There are a lot of techniques how to connect a keypad to a 877. you may look at the microchip homepage for some circuit connections
Microcontrollers :: 03.09.2008 03:08 :: neoaspilet11 :: Replies: 11 :: Views: 2023
I have a question for all the brilliant minds of EDA board:
How can I interface a 4x4 keypad with a pic16f877a?
Oh, and I'm using CCS compiler.
Thanks :D
Microcontrollers :: 23.10.2008 05:58 :: Legatus :: Replies: 4 :: Views: 5517
Hi ,i have interfaced keypad,encoder mm74c922,lcd jhd162a and pic16f877a to display the key pressed.
I am connecting keypad encoder to PIC.
I am using mplab ide.and hitechc c compiler.
My program is as below.I am using Proteus software for simulation.there is no error while building but it doesn't display the key pressed .
I have (...)
Microcontrollers :: 04.04.2009 13:07 :: joseph raj :: Replies: 0 :: Views: 1782
Hi, I'm new here and new to PICBasic as well.
I'm working on a project which I was required to use several temperature sensors (LM35DZ) to measure the temperature inside each room and another temperature sensor to measure the atmospheric temperature. When there is huge difference of reading between atmospheric temperature with any of the tempera
Microcontrollers :: 29.04.2009 13:29 :: hckeat :: Replies: 17 :: Views: 13490
The more I see BASIC, the more I realize how deficient it is!
Yes, you are right about PORTB feeding the 4 data lines to the LCD and the keypad as well.
There are several ways to read a keypad but the most common way is to 'scan' it, the procedure is:
1 Set the port data bits to output mode. Set the row pins to be inputs.
2
Microcontrollers :: 17.09.2009 01:40 :: Shinnster :: Replies: 49 :: Views: 8343
hi , any one can help me to provide me a schematics with interfacing pic16f877a with keypad to control my design of alarm car system , also to provide me a code represent this design .
thnk u very much
Microcontrollers :: 06.03.2010 21:21 :: shawahni :: Replies: 2 :: Views: 963
hi,
I am interfacing the keypad on a single port using B0-B7. I am having problem with the key detection.. kindly help.
int keypad(){
int i; int key=0;
output_B(0x01); // Start with column 1
while((input_B() & 0xF0) == 0){ // While no key pressed
output_B(input_B() << 1); // next column
key++; // column number
if(key==4){
Microcontrollers :: 19.03.2010 00:09 :: Athar Rasul :: Replies: 2 :: Views: 2693
i am using pic16f877a, 20 mhz oscillator, mikroCPRO for PIC - compiler, 2x16 LCD, 4x4 keypad and a USB pic PLUS programmer.
the main menu is displayed on the LCd screen initialy. when the user presses the key using keypad, it should display the sub menu and again it must get the user input and ask for the quantity required. after pressing (...)
Microcontrollers :: 20.03.2010 07:54 :: keeth18 :: Replies: 6 :: Views: 734
hello friends, i have similar project keypad interfacing with led but i use pic16f877a
and i tried the previous code but itsn't work can one help
Microcontrollers :: 30.05.2011 07:52 :: alaalwi11 :: Replies: 4 :: Views: 3044
Hi,
I want to make a password access system (user to input a password using 4*4 keypad )
but i would like to know how to store consecutive numbers and then restore them
example :
user input 1 , then input 5 , 9, 8
how to store this input as a one string "1598" ?
Microcontrollers :: 01.07.2010 22:20 :: toto_na16 :: Replies: 11 :: Views: 1437
hi ,
I wrote this code to display a pressed key (1-16) on LCD
but when i press a key it make all the screen full of this character ?
char t;
unsigned i;
void main(){
TRISD=0x00;
Lcd_Config(&PORTD,2,3,0,7,6,5,4);
keypad_Init(&PORTB);
while(1){
while(keypad_Read()==0){
Microcontrollers :: 02.07.2010 19:58 :: toto_na16 :: Replies: 3 :: Views: 945
Didn't get a reply for my question............... :(
Regards,
Jerin.
hi....i realy need help on my final year project...please help me...
my project is wireless monitoring home alarm system
i using pic16f877a
i need interface lcd and keypad on that pic...
please guide me... and i need coding for t
Microcontrollers :: 20.10.2010 12:36 :: R PUSPARAJA :: Replies: 15 :: Views: 677
Dear friend,
Actually pic16f877a has 4 ports.
You can use portd for lcd,portb for keypad and portc for RF.Use porta for sensors.
I am not familir with your language, so try yourself I will sufficient logic for u.
Microcontrollers :: 21.10.2010 06:36 :: ansarmytheen :: Replies: 10 :: Views: 2308
Dear friend,
Below program is for 4*1 keypad reading.
list p=pic16f877a
#include"p16f877a.inc"
cblock 0x20
r0,r1
endc
org00
goto main
org 04h
retfie
main
bsf status,5
bcf status,6
movlw 0xf0
movwf trisb
movlw 0x00
movwf trisc
bcf status,5
bsf portb,0
top btfsc portb,4
goto l1
btfsc portb,5
goto l2
btfsc portb,6
goto l3
b
Embedded Systems and Real-Time OS :: 27.10.2010 11:22 :: ansarmytheen :: Replies: 18 :: Views: 12653
Please help me by sending a 3x4 keypad programming for pic 16f877a and the key pressed will be displayed on the LCD. keypad is connected to port d and LCD to port b.
Microcontrollers :: 04.12.2010 14:35 :: ancymuhammed :: Replies: 8 :: Views: 3361
hello every one!
can some body help me :
i am using a keypad with lcd display in pic16f877a. i wanted to store the values of keypressed into an array. can anyone tell me the exact way and syntex.
thanks in advance.
Microcontrollers :: 14.12.2010 10:36 :: nudrat :: Replies: 4 :: Views: 1392
Hi all, I'm still new in here and need help about my project. i use the 4x3 keypad to enter the number and the number will be displayed in LCD. If here anyone has the mikroC code about it and please help me.I am using pic16f877a Thanks!!!!!
Microcontrollers :: 29.12.2010 05:05 :: ancymuhammed :: Replies: 5 :: Views: 1194
Hi , all !
I to let because of the Calculator with keypad . By simulated to go only until
main loop with function "MyKey = getkeypad ()" .
compiler v8..
pic16f877a
EasyPIC5
Within loops the code is logical . But mutual function linking is me suspect in the
main call to the subroutine I not understand . But I am for this to (...)
Business, Promotions, Advertising :: 05.01.2011 13:47 :: inad :: Replies: 4 :: Views: 1297
hello everybody
am trying to connect LCD and keypad to pic16f877a but after compile the code
and connect the schematic in Proteus when i Press on the keypad no out put on the LCD
i upload the micobasic program and the Proteus here
Microcontrollers :: 20.01.2011 19:53 :: lina889 :: Replies: 4 :: Views: 1178
u can use UART you can see in pic16f877a datasheet, pin C6 and C7 is for tx an rx..
in the link i give below, find the serial communication section,
Chapter 4: Examples - Book: PIC Microcontrollers - Programming in C
did you have any experience with serial comm?
Microcontrollers :: 28.02.2011 18:21 :: lockman_akim :: Replies: 30 :: Views: 6712
Hi, in my FYP for microcontroller, I proceeding a project about an RF interface
with keypad as an Input,& LCD as output.(pic16f877a)my problem is i cant find
any program that uses RF interface with keypad and LCD. How can i send data,
using RF .. example.. enter a digit in keypad PIC1.. and then . send to another (...)
Microcontrollers :: 27.02.2011 08:40 :: annwar :: Replies: 0 :: Views: 670
hi . .evry one. . please help me. .i need to know how to pogram a numpad/keyboard as an input of the microcontroler(pic16f877a) and i also want 2 know how to program it. .
it goes like this. . if i press 1 the delay of my program will be 1 hr. . and if i press 2 . .2 hrs is the delay of the program. . the number that i pressed will also be displ
Microcontrollers :: 28.02.2011 07:46 :: donnafe :: Replies: 1 :: Views: 308
hi there,
anyone could help me out in writing a C language code for a 3x4 keypad and a 16x2 lcd? the idea is writing a 10 integer number that could be display in an lcd, thus storing it into the microcontroller? i am still very new to PIC microcontroller thats y im gonna need some help
---------- Post added at 23:19 ------
Microcontrollers :: 21.03.2011 16:19 :: streetlifez :: Replies: 2 :: Views: 263
I have many example on pic16f877a. It's is C Code using Hi-Tech compiler. I use Hi-Tech because it's already integrate with the MPLab software. My Lesson.
The sample include LED, 7 segment, switch, keypad, LCD, comparator, ADC, PWM, Timer, Interrupt, EEPROM, UART, SPI, I2C, RFID reader, GSM (AT Command)
Microcontrollers :: 09.05.2011 07:17 :: engshahrul :: Replies: 10 :: Views: 2360
in real i found this code in old thread
in this project used pic16f887 but i does not find this chip in my proteus so i use
best regard
Alaalwi
Microcontrollers :: 30.05.2011 22:49 :: alaalwi11 :: Replies: 3 :: Views: 1060
Thanks for the reply,
Yes, I've already used mikroC to display text on LCD with pic16f877a. I have no idea about RTC chips but I'll try about it.
Maybe you still have more ideas bro?
Cheerz!
Microcontrollers :: 15.08.2011 21:21 :: fcaiii89 :: Replies: 10 :: Views: 3580
I am using pic16f877a. Thank you so much BigDog.
Felipe
Microcontrollers :: 18.08.2011 03:30 :: fcaiii89 :: Replies: 10 :: Views: 818
Hi,
I am designing a digital temperature monitoring system using pic16f877a and sensor (PT100). I am required to measure and display the temp on a 16x2 LCD. I am using MPLab with Hi-Tech C-Compiler. I have a code but it does not seems to work. I need help on the codings.
Microcontrollers :: 27.08.2011 12:13 :: ah_loon :: Replies: 5 :: Views: 654
can anyone help my project regarding sms controller using SE t230 with pic16f877a that control relays (8 relays) here is my code below:
#define TRIGGER PORTD.F1 // set porta/f5 as output
#define DATA PORTA.F4 // set data to c922 for keypad decoding
unsigned int index=0,count=0,address=0,addrLength=247,inbox=0,intFlag=0;
unsigned s
Microcontrollers :: 06.09.2011 13:44 :: chitobuknoy18 :: Replies: 8 :: Views: 995
It is better to use PORTB of pic16f877a for the purpose because you can utilize the interrupt on change capability of the PORTB . Also, you can activate the internal pull up s....
Microcontrollers :: 18.09.2011 20:11 :: vinodstanur :: Replies: 9 :: Views: 1407
Hello, I'm a newbie here... I'm doing a project, "password door security". I need to program my pic to be able to change the password. I don't know how to continue... What's programmed on the password section seems to be wrong.
I've programmed till here... Some1 please help me..\ How to disable the "*" button.. I only want it to work as a button
Microcontrollers :: 20.09.2011 22:08 :: josh_world90 :: Replies: 2 :: Views: 846
Hi I have a problem. Is it possible to have 2 keypads from 1 PIC (pic16f877a). Simulating it on proteus doesn't work. Do you have any idea how to do this? my code does work, but in simulating it. The code does not work.
Microcontrollers :: 26.09.2011 07:23 :: come512l :: Replies: 10 :: Views: 367
Description: A number is displayed on the LCD for 1 second, after that a user has to answer it by pressing the number on the keypad within 3 seconds interval.
How do you implement this? waiting for an input with in a certain amount of time else I will display a "No answer" notification on the LCD. If the user answers it within the 3 s
Microcontrollers :: 02.10.2011 07:06 :: come512l :: Replies: 2 :: Views: 474
I have thought that the for any one who wants to change password he should start with # following new six digits and finally old six digits to verify whether he is authinticated or not. So i only need to upgrade my code with that part of changing PIN and make it saved to EEPROM of pic16f877a.
Microcontrollers :: 08.10.2011 00:09 :: kaka' :: Replies: 3 :: Views: 915
anyone can help us in programming pic16f877a in fingerprintscanner using mikrobasic that will open the locker
Microcontrollers :: 09.11.2011 07:44 :: killua24 :: Replies: 1 :: Views: 355
dear all
currently i am doing on program which is safe box by using pic16f877a
i got the key pad program which i write it b myself
following are my code
list p = 16f877a
#include p16f877a.inc
__CONFIG _CP_OFF & _WDT_OFF & _XT_OSC & _PWRTE_ON
lcd_RS equ 1
lcd_write equ 0
lcd_op equ PORTD
kpad_pat equ 20
kpad_add equ 21
kpad
PC Programming and Interfacing :: 12.12.2011 11:39 :: emperror123 :: Replies: 0 :: Views: 1214
can u help me which header files???
i think
#include
#include
yhen i got errors
C:\Users\DCS\Desktop\example\ex1.c:3:Error unable to locate 'avr/io.h'
C:\Users\DCS\Desktop\example\ex1.c:4:Error unable to locate 'util/delay.h'
It appears you have failed to specific a device sp
Microcontrollers :: 01.01.2012 19:58 :: bigdogguru :: Replies: 31 :: Views: 1276
Hai... Please visit to this site. Hope you will get the details...
mikroElektronika • View topic - keypad interpace on pic16f877a
I think the code which is written for the old version of mikroC compiler. In the new version mikroC compilers, the LCD_Config(), re
Microcontrollers :: 08.02.2012 08:31 :: karthikkrv85 :: Replies: 13 :: Views: 393
Last searching phrases:
strang | solution manual dsp proakis | fdtd for patch antenna | oblique | simulator and emulator | motherboard repairing | internal capacitance | low noise amp differential | led noise | input impedance cadence
strang | solution manual dsp proakis | fdtd for patch antenna | oblique | simulator and emulator | motherboard repairing | internal capacitance | low noise amp differential | led noise | input impedance cadence