IK3OIL 16F84 PIC Frequency Counter Files

Davewb4 at aol.com    provided these files

Here are some comments he made to the QRP-L list:

HI All: Wayne got the hex code for the counter  from me. I got it from 
Francisco (IK3OIL). I have built 5 of these counters and  all work from the git-go. 
I have the hex code and can supply it to anyone who  wants it. I also have 
redone the art work for Francisco's board. He used some NO  tactile switches that 
are hard to find so I changed the board slightly. I will  be happy to supply 
that to any one who wants it. The counter costs about $ 10 to  build since you 
can get the PIC16F84 chip from Micro-Chip as samples. If you are  going to 
Orlando this week end for the ham fest I will be there at the ARCI  meeting with 
a IK3IOL micro counter and some Unicounters and a 2N2/20. IF anyone  wants to 
build a Microcounter but cannot program a chip, just send me an 18pin  Dip 
16F84 and I will be happy to program one for you. I also have the schematic  for 
the Micro-counter.
73
Dave Rogers
WB4CHK
Plantation, FL

---

www.eio.com/lcdprodt.htm

Here is a good  place to purchase the LCD. Click on character LCD and in the 
middle of the page  find Seiko L1671BIP...... A 1x16 character LCD, its back 
lit and the $ 6.00  price is nice. 

I must say I am overwhelmed by the interest
73
Dave

---

Since there is so much interest in this project,  here is what you get.

1. A very nice stand alone frequency counter for  the bench or
2. A digital readout for any rig. With the mode switch you can  set the IF 
offset to any of three combinations i.e.: VFO+IF.... VFO-IF or  IF-VFO
3. With some additions it can count into the Gig region. It has a  pre-scaler 
option. ( Wayne McFee NB6M has some mods for that, so if you are  interested 
in counting that high you should contact him. I use them for rigs I  build.  I 
installed one in my 2N2/20. It has an 11meg IF & a 3meg VFO  so I use VFO+IF 
to read 14MHZ
4. A typical 14mhz count would be  14.060.45
If you use my art work for the PC board, please note I use MS paint  and 
everything is oversize. I suggest first of course, reverse the design then  print 
a copy of the board. Place an 18pin dip socket on the print and compare  the 
hole line up. It will probably be to large. I then use the size program on  my 
HP laser jet program to reduce the size. Try 74% that should be close. Once  
you get the Dip to exactly the correct size all the rest will be OK. I use PnP  
blue to make the boards. If you want to build the counter and do not have a  
programmer for the PIC16F84, just send me one and I will program it for you. 
Any  questions just ring. I also have some pictures of the completed board, the 
 switch change, the LCD connections and the finished counter. It's a large 
file  3.5MB.
73
Dave  

 All,

You might also want to check-out the frequency counter that Phil Rice,
VK3BHR,  in Australia produced. It is an almost identical design; PIC 16F84
with a single input transistor. In fact he gives credit to IK3OIL for
inspiring the design.
http://ironbark.bendigo.latrobe.edu.au/~rice/

Phil even makes the source code available if you want to tweak it. On the
web site click on the Updated Frequency Counter. I haven't built it, but I
did email Phil for ideas about using a TCXO instead of the 4 Mhz crystal. He
was very helpful.

Phil also has a PIC16F84  L/C meter project which I did build. It functions
very much like the Almost all Digital meter (which I don't own).  Mine works
great, and is really useful for sorting out unmarked or illegible inductors
and capacitors. Highly recommended.

-Walter
VE7WRS

-----