[McHUG] Re: CW Decoder for Arduino (n3sb@qis.net)

[Pat Kilroy]

Hey Steve,

This is great stuff, THANK YOU!  

Your program is the perfect companion to our 
PICetSat II telemetry output!  (Oh yes, I 
have an updated schematic diagram to share 
with you and others, as you asked last month.)  

I will put one of my students on reproducing 
your program, starting before this month is 
out to poke, prod & play with it.  No doubt 
we will have questions -- and offer some 
"requests" too!  

The first couple things I noticed are (1) 
your filtering frequency and (2) your 
output printing.  

(1) Our output cw note is at 700 Hz.  We can 
change it to 1000 Hz, of course, but maybe 
we'll first try all as is, keeping an eye 
how much the difference of 300 Hz may be.  
Do you have a circuit diagram?  Or is that 
pretty trivial?  

(2) I'm not sure if your coding is directing 
the results to anything but the screen.  One 
of the things we need for our telemetry is 
an ASCII capture buffer.  We capture the TLM 
in the decoded CW and then, with a separate 
program, we parse the file.  We then decode 
the parsed TLM in a spreadsheet.  

So, are you able to include one or more 
capture buffers?  

Catch you later!  

Thanks again,

Pat
N8PK


> -----Original Message-----
> From: mchug-request at mailman.qth.net 
> Sent: Sunday, October 12, 2008 04:01 AM
> To: mchug at mailman.qth.net
> Subject: McHUG Digest, Vol 6, Issue 2
> 
[snip]
> Today's Topics:
> 
>    1. CW Decoder for Arduino (n3sb at qis.net)
> 
> 
> ----------------------------------------------------------------------
> 
> Message: 1
> Date: Sat, 11 Oct 2008 20:56:05 -0400
> From: n3sb at qis.net
> Subject: [McHUG] CW Decoder for Arduino
> To: mchug at mailman.qth.net
> 
> Hi Folks;
> 
> The code below is my very first attempt at decoding CW. It works, 
> but needs refinement. It's attached below for anyone who wants 
> to play with it.
> 
> 73; Steve, N3SB
> 
> -------------------------------------------------------------------
> 
> // Program morse1 written October 11, 2008 N3SB
> //
> // This program is the first attempt to receive CW on an Arduino (ATMega168
> based)
> // The program depends on a 1000 Hz interrupt routine, which is used to [snip]