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1000 Threads found on edaboard.com: Pic Frequency Counter C Code
Check out this link. Might be useful to you. NIKS
The basic idea for any frequency counter is to set a timer, wait till the input on a pin change, calculate the time taken and find the inverse. There are lots of schematics on the net, use google. A very crude design can be found here : Try searching for pic frequency cou
pic16F628 is not recommended by Microchip for new project. As a drop-in replacement the suggest pic16F628A .. so code for 628 is good for 628A .. Regards, IanP
Maybe code part of mine non-pic, zero parts, 50 MHz (at least), freq meter can help you.
counter-app with 16c5x: 7-seg app-note: Can't believe it is so hard to browse a website (o; Though it's not for the exact MCU as you want...bus since you are an experienced pic guy it won't be hard to adapt it (
Hi, someone have developped a picbasic program for frequency counter pic based?
hi guys, i am considering to design a frequency counter using atmega8, i want to use asynchronous operation of timer/counter2. frequency counter developed by pic asynchronous timer is ther.... but i want to make it with atmega8..... need some suggestion.. (...)
PCB for The Weeder frequency counter pic 16F84 port by Peter Cousens
How to make a frequency counter without touching pic? Using logic gates.. thx.
Hi, Recently I visited the page frequency counter by pic16F628 Now I'm very much interested to build the circuit with modification to use it as a tachometer(or rpm meter).The hex file is working correctly for frequency meter. B
I did something similar but with a pic so not much use to you, the system also displayed road speed, oil pressure, oil temp, gear shift position, voltage etc, wasnt so hard to do, fairly basic stuff for a microc these days.
Here you Software 999MHz with 1kHz resolution (the hex files are Software
Hai, I'm a beginner in VHDL coding and trying to write a code for frequency counter consisting of a clock divider ,count gate (AND gate), counter. I need a 1second clock as the output of clock divider. ise simulator is not responding while i create a 1second test bench. Could you help me to code the blocks? (...)
i want to design a counter that counts the no of pulses applied to the input pin.i write a program for this but it does not count the signal at all time due to display program. how to operate these simultaneous operation at a same time in microcontroller.i show my program please help me.... my program written in microc for pic16f877a microcontro
Can some body plz help me to modify the following codes for counting the frequency up to 2Mhz of a square wave and sine wave: #include <16f877a.h> #use delay(clock=20M) #include #include #fuses hs,nowdt,nocpd,nolvp,noprotect #byte portc=0x07 #bit led=portc.4 void LCD_D(); unsigned int16 value; void main()
Can anyone help me out on this, i need to design a frequency counter for the range 1Hz to 2Mhz using 82C54 and 89C55wd. I have designed a circuit but it gives an error of 1Hz @ 1000-3000, which keeps on increasing as the measurement frequency is increased. Currently i have mazimum range of 132Khz and the circuit is designed on a breadboard. (...)
HI ALL FRIENDS I need help regarding prescaler for the frequency counter i required a prescaler that can be divided the in put frequency with 10 mean divide by ten. further more i also required a pre amp with sensitvity of 10mv if some one help in this then i will upload a classic frequency counter (...)
Hi, I need to determined a square digital waveform's frequency. Any suggestions on how to do that?? I am thinking of using one of the i/o pins as input from and external source and determining that the frequency of the waveform on that input is 424hz. Please advice...
1. serch in old post 2.
I've adapted the front end for this frequency counter (see diagram) from a design byPhil Rice VK3BHR and it works well. Now I want to put in some front end protection for the AT-41533-TR1 emitter follower front end transistor, it's rated at a max of 1.5V Vbe and the 74AC161 is good for a max input frequency of 200 MHz. L1 is supposed to (...)
i did lots of work on frequency meter from silicon chip , did not succeed. i am looking for another small but good working frequency meter using pic16F84A and LCD. last time i saw the ckt of such kind with 0.8vpp sensitivity , i am not exacty remember web add of it but everything is given on that web page , and the pcb size of that (...)
Hi, I need to implement a simple VHDL frequency counter for a school project. Must be 4 multiplexed digits. (the FPGA as few macrocells). I know how to implement the counter and the BCD to seven segment. is the multiplexing and puting things togheter that i need help. Can anyone point me to an example? Must be very simple. Thank (...)
The HC132 should happily drive a dspic digital input so if the signal is fine on the 'scope until you connect it to the pic then it sounds like something is wrong that won't be fixed by further buffering - but I guess you have found that out. Is the pic input correctly configured? A bad waveform could be a clash - output trying to drive (...)
for those who are interested to realize frequency counters i submit here the schematic and firmware for the one i made 2 months ago The frequency counter is based on pic 16F628A and the 7-segment display is realized with MAX 7219
hi! I'm trying to have a frequency counter using z8F6401 and hyperterminal as my ouput. I just adapted the code from the free sample codes of zilog. They use a LED matrix as an output. Kindly check my code if it is correct. Thanks in advance! #include #include #include (...)
Hello guys! I have problem in my project: "Digital Wave frequency counter Using pic16F877A". Its simulation runs very well but the problem arises when i practically implemented the project in the Lab. There is no output on the LCD instead of the glowing dot matrices whereas the microcontroller is alive as indicated by the status LED :?: (...)
All sizes | 1 MHz frequency counter using AT89C2051-pic. | Flickr - Photo Sharing! for detail
Hai friends, In my project i interface an IR module with pic 16F877a,This system is used for counting motro rotation. pic in counter mode using timer1.Now the problem is that when i connect manually to an IR then pic count properly.But when it connected to the motor it reads wrong count.OR it does not work properly. (...)
This frequency counter is around about 20 years old. The original version(i guess) was made with pic16C54 printed in an electronics magazine as a constructional project. I have that issue. It appeared on internet with modifications and improvements. frequency counter,pic 16F84,Weeder Techno
Hi All I recently built a frequency counter kit from a company, that I won't name, and it didn't work. Tried to get help from the supplier, poor customer service. So I figured I tried to build my own from scratch. I came across the Weeder counter I found here I have the circuit working
Does anyone have a simple project with pic 16f876a for a counter frequency? google don`t help me.
HI; i want to count the pulses using pic16f877a. the pulses are being fed into pin RA4. i want to use timer interrupt for that so that other functions performed by the mico should not disturbed. the frequency is displayed on the LCD Screen. kindly help me with Mikro C code. thanking you in anticipation.
Hello guys, I have generated variable frequency square wave from 555. Now I want to give that frequency to LPC2148 and also display on 20x2 LCD. Can anyone help me to decide program flow? that is algorithm?
I m writing frequency counter for 16f877A using mikroc: my code is seen below. please guide me where it is wrong as it doesnt give any output when i run it in proteus. // Define LCD module connections. sbit LCD_RS at RD1_bit; sbit LCD_EN at RD0_bit; sbit LCD_D4 at RD4_bit; sbit LCD_D5 at RD5_bit; sbit LCD_D6 at RD6_bit; sbit
Please help me in.. i am a beginner and i need to make frequency counter with explanatory details.... and circuit for frequency counting along with the test benches and code for that.. on Spartan 6 board
Hi, can someone indicate me the link where to find the project of a simple frequency counter without MCU? A simple project with at least 6 leds display it is also all right a 10-50 Mhz Thank.
Hi I'm looking to algorithm to frequency counter using AVR or MCS51 but it must mesurement in 4-6 fraction of frequency Example F= 1000.xxxxxx HZ anyone can advice me thank
Hexfile for pic16f84 newactive
hi sphinix i have this problem too . is it possible for you to modify this source code and share with us . there is another link that have made a frequency counter with pic16f876 but there is only HEX file:
Hi Looking for frequency counter rotuine in C language for 8051 {any memeber} (for any compiler) Should work with TIMER0 or TIMER1,TIMER2 configerd as couter Thanks in advance Bobi
i want to make a 1GHz frequency counter that could read analog or digital signals, the input signal voltage could be 50mv or 10v for example so i need a pulse shaper circuit, i thought of a schmitt trigger but the problem is the high input frequency, is there any way to shape the signal to pulses of 0-5V? i am going to use (...)
I'm looking for a circuit for a shortwave receiver frequency counter WITH PROGRAMABLE IF OFFSET Thanks
Hi, I am looking for a complete DIY project for FC (upto 1GHz) using subject chip. Can anybody help? Regards
Guyzz i just bought a used : Philips PM 6674 frequency counter (550Mhz) I just got the meter , no documentation at all. Anyone have Usersguide or Servicemanual or "Anything" on this one ??? TIA Bingo
I am currently doing a project that involves making an infrared based heart rate meter. If anybody has done same thing then I would appreciate any info. Specifically , I wanted to know abt suppose I have digital pulses(heart beats), then how do I count the heart rate. I know how to make a conventional frequency counter in which counting time i
the best frequency counter prog for sound card
I AM SEARCHING MANUAL FOR HP5341A frequency counter thanks pic2004
I am using a prescaler (MC12080) to divide the frequencies by a ratio of 10. However, I found that the output contain many harmonices. Since my frequency counter is too sensitive, sometimes it may capture the wrong frequencies. For example, my input frequencies is 100Mhz, the frequency counter turns out 20Mhz. Does (...)
Can anyone post a schematic for making a frequency counter measuring from LF to UHF. If it could be through a computer with interface it would be better. I searched all the post and found only info for FC to 30Mhz maximum I am a newbie and i would like to practice with something like that Thanks for your answers in advance!
Is there any difference between "frequency meter" and "frequency counter"? Thank you all. nguyennam