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16f877a Keypad

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21 Threads found on 16f877a Keypad
my project block diag: keypad(input)=>pic16f877a=>max232=>DTMF encoder=>RF 433 ASK Tx => RF 433 ASK Rx=>DTMF decoder=>max232=>pic16f877a=>relays the data is being correctly transmitted and received using max232. so in cross questioning if i asked why i'm using max232 is then what will be the answer?? plz help me
I am here with an very unexpected problem with 16f877a . In my circuit i used ports d,a& e as output port and ports d &c as output port. I have an 16*2 lcd display in my circuit. When i power the circuit the display works finely ie, it displays what i want. But the problem is pic doesn't senses any key press. i used 10k and .1uf for the reset circ
Hello, I have wired a wireless RF transceiver, 12 key keypad, and PIC 16f877a together. Right, I'm trying to change the hex value that is being transmitted from the transceiver using the keypad, and onto LEDs, but my program seems to get stuck in the debounce section. The debounce works fine when only connecting the (...)
Hello there I am busy with a project where I must use a 4x4 matrix keypad to display 40 characters i.e (A-Z,0-9,comma,decimal point, exclamation mark and question mark) using alpha numerical display(same way the old non-touch screen cell phones worked). I am using a 16f877a PIC and programming in MikroC compiler for PICS. Now program
Hi all, How to interface 4 x 4 keypad with PIC micro-controller (PIC 16f877a) with detail : The numbers 0-9 will be used as the decimal operands and letters to specify the operation: F will carry on the addition ? + ? of 2 digits E will carry on the subtraction ? - ? of 2 digits C to show result ? = ?. please code only
sorry i don't have sample program for that ic i found this link which has the sample program for pic 16f877a this will help you.
70831Dear All Please see picture This is my Proteus project connected to 16f877a MCU with keypad. when I press the key the result put to the portc please advice, is this cct is correct?. meanwhile please send me a sample ASM code for this cct to understand the operation of keypad. Thanks As f
im a beginner in microcontroller espessially pic microchip I use a pic 16f877a which shall to receive temperature through temp sensor on adc on a pic 16f877a and compare it with defined value I enter by keypad If the received value exceeds the defined value buzzer turns on. I cannot interface keypad so enter a defiened (...)
HI, I am repeating... I am doing a project to get input data from a 4X3 matrix key pad (just as in mobile) and display it in lcd using pic 16f877a.... the keys are like (.,1),(abc2),(def3),............(wxyz9).... i dont know how to write code for key identification as it uses multiple character in a single key..... if any one know
HI, I am doing a project to get input data from a 4X3 matrix key pad (just as in mobile) and display it in lcd using pic 16f877a.... the keys are like (.,1),(abc2),(def3),............(wxyz9).... i dont know how to write code for key identification as it uses multiple character in a single key..... if any one knows please help....:-(
Hi all.. we are working on our term project regarding dc motor speed control.. the process is to give the input through keypad,and the motor should move according to that speed(RPM).. means,least speed on 1,a little more on on....and maximum on 9.. side by side,they key pressed on keypad,in displayed on lcd as well.. the lcd part is wo
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.
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.
Hi, I had the project built on hardware earlier. I just burned the 16f877a with the PICKit2 and placed it in the circuit. You could try using Proteus. Added after 57 seconds: You should try it as hardware if possible.
Hi, Take a look here: Here you can find schematic with code using 16f877a. Hope this helps. Tahmid.
i have a final project and it title is a DIGITAL COMPASS.. i already have the hardware but i must create it program myself. im using keypad 4x4, lcd 2x16, pic16f87a dan sensor( Hitachi HM55B compass module ).. i have a program but it didnt works.. LCD didnt show anything.. im stucks.. here this program and circuit. .thanks so much for helping me..
Hello all, I am developing Training and educational kits for the newbies of embedded. Recently I've launched a training kit for PIC16f877a. This kit contains many modules such as -LEDs -USART -4x4 keypad -7-segment display -LCD 16x2 -I2C EEPROM -RTC and a ICSP based programmer for PIC 16f877a. For more details and pricing (...)
my project is speed control of dc motor using 16f877a and i use lcd and keypad i enter the speed dc motor keypad. i need code in mikro c and circuit dc motor like 24v 1000rpm 300watt please help me realy i need help
hi to all i have car alarm system project , i need to arm and disarm the pic using keypad. so please help me i need schematich and C code thnx
Hi I'm also newbie in PIC but I already try keypad and LCD once but for bluetooth not yet. I use MikroBasic V7.2 from MikroElektronika. i Attached the sample program. Just Checked. ( I Use PIC 16f877a). LCD Connection : Port b : R/W = Gnd E = pb.3 rs = pb.2 data = pb.4 - pb.7 (...)