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Looking for frequency counter schematic for microcontroller

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igor

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Hi

I want to build frequency counter with microcontrller 0 to 10,100,1000MHz(LCD or led display) with 8 digit display. Have anyone scheme with source code for microcontroller.
Thanks
 

klug

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led display frequency counter

Hi igor!

As I see, nobody has any suggestion for you, look on these constructions, maybe they are litlle bit old, but look what can you do...

You can take it from RA4NAL home page.

----- first (old) on at89c51 1Hz - 1000 MHz, 8 digits display: -----

**broken link removed**

russian languafe variant:
**broken link removed**

program:
**broken link removed**

----- second (new) 1Hz - 40 MHz 8 digits display on PIC16CE625: ----

russian description:
**broken link removed**

program:
**broken link removed**

additional prescaller:
**broken link removed**

-------------

You can combine these two schemes - take main part from second and input prescaller from first.

Best Wishes! klug.
 

tanveerriaz

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pic frequency counter led 8 digit

chk this this is 4 digit
hwwp://www.pira.cz/
frequency meter+ Switchable -10.7 MHz intermediate frequency offset for use with receiver .
if any body help me about +10.7 Mhz if offset pls mail me
 

sakiralp

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8-digit frequency counter schematics

great
thanks

tanveerriaz
 

igor

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frequency counter

Thanks for suggestion. I was made counter with 89C51. It has a best characteristic. Counter work original with quartz 6,144MHz , but I shall like change frequency to 10MHz. How can I change frequency oscilator? Instruction about this exsiste in instruction , but I dont now with which program I change hex source code for this microcontroller?
 

klug

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frequency counter 10.7mhz pic

Hi Igor!

You can open this file with any text editor.

I have opened your hex file and found string that you need:

:1001B00022082FD5FFFFFFFFFFFFFFFFFFFFFFFF1D

As you see, there are K1 = (08h) and K2 = (2FD5h) factors. You need to calculate them for your quartz frequency. Change these factors and calculate checksum (1Dh now) in the end of the string.

You will find hex file format and how to calculate checksum of string here:

**broken link removed**

Best Wishes! klug.
 

S

sick_man

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counter with nixie tubes

klag

this is a nice circuit
i like it






i like it

but i for many years used a nixie tube counter

my internal refresh rate is set to the same flicker as the refrsh

i find nixie more responsive
and the thing all lcd weened guys seem to lack when they use one they love it
i used one made by RCS it was 0 - 10 ghz 0- 500 mw max input

had a nice xtal oven running at 10 mhz and a divider made in ls logic with the usual SP / 10 chip
run on ten nixie tubes by lateral refresh

i very much like these counters


i will remake the schematic and cod e to a nixie tube version {if people can still find them they are much nicer on the eyes for the bench}

nothing more but thanks
 

S

sick_man

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www.webx.dk/oz2cpu/radios/counter.htm

**broken link removed**

:D

after looking at this i see there is space in the chip to add a button to also subtract 10.7 or add 10.7 or infact any programmable shift onto the freq as you requested
there fore build this one it loks fairly straight foward and looks like a winner covering the features you need
 

Sheeraz Khan

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frequency meter 8 digit

Hi

I want to build one minute pulse generator with microcontrller. Have anyone scheme with source code for microcontroller.
Thanks
 

newmania

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frequency meter source code

look at **broken link removed**
Enjoy!
 

S

sick_man

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frequency counter receiver if 10.7

tanveerriaz said:
chk this this is 4 digit
hwwp://www.pira.cz/
frequency meter+ Switchable -10.7 MHz intermediate frequency offset for use with receiver .
if any body help me about +10.7 Mhz if offset pls mail me


HELLO MY PAL

after looking at the source and the schematic

then i am sorry but you need another i/o pin on the pic to be able to switch the shift into the counter assembler code.....

it is easy to do but you need to also add a pic 508 or something with a few i/o as a streatcher to the onboard pic you can then mode load the shift into the asm via a pin but there are non spare
 

igor

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oz2cpu

Iam interesting for counter the least 8 digit. Any other iI am not interesting.
 

tanveerriaz

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frequency counter at89s51 6 digits

hi simbox :oops:
i am not a programmer and aboe file this file only hex file if u help me make 2 file for me 1. +10.7
and 2nd. -10.7 (when i need +- if i reporogram pic)
sorry for my bad english
thanks
 

leemarrow

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rcs frequency counter

hi
i have build this:
h**p://www.efplus.com/techref/piclist/weedfreq.htm
there is only schematich and hex file
 

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