[Elecraft] [K3] Magic CW box and PIC programming

[PA3CW]

Of course it is possible to distinguish between dot left or right.  My idea
is: press the "P" (program button) on the "magic box", then sequence key the
paddle with dot button first then dah button. The pic can read the sequence
and decide which one is dot and which one is dah, in other words, shoud the
input be connected to the output 1 to one or should the wires be crossed?
It is fun to design such a box with logic inside. Easy to do with switches,
but that is not the idea. Just plug in, pres the P button and key down a
straight key or paddle dit dah. The box recognizes the contacts and connects
to the output accordingly ;).
Dick PA3CW 


Joe Subich, W4TV-4 wrote:
> 
> 
> No PIC or microcontroller routine is going to be able to 
> distinguish between paddles with the left paddle connected 
> to the tip and those with the right paddle connected to the 
> tip.  
> 
> I agree with Ron, build a box with two toggle switches 
> (or sets of jumpers) per jack: 
>   1) a DPDT switch to reverse tip and ring,  This handles 
>      the "left/right paddle on tip" and "straight key on 
>      the ring" issues
>   2) a SPDT switch to connect the ring "through" or to 
>      the sleeve (ground).  This handles straight keys 
>      using a mono plug or straight keys connected 
>      between tip and ring. 
> 
> These two switches (with a stereo input jack and a stereo 
> plug to the rig or keyer) handle any possible combination 
> of key and connections I can imagine. 
> 
> 73, 
> 
>    ... Joe, W4TV 
>   
> 
> 
>> -----Original Message-----
>> From: elecraft-bounces at mailman.qth.net 
>> [mailto:elecraft-bounces at mailman.qth.net] On Behalf Of Ron 
>> D'Eau Claire
>> Sent: Tuesday, November 10, 2009 12:39 PM
>> To: 'Arie Kleingeld PA3A'; elecraft at mailman.qth.net
>> Subject: Re: [Elecraft] [K3] Magic CW box and PIC programming
>> 
>> 
>> I agree Arnie, if I'm setting up stuff to operate in my own 
>> shack. However, if I wanted to be able to use my rig with 
>> various other people's keys an easy-to-configure interface 
>> box would be very attractive. 
>> 
>> I would opt for a box with the connectors Dick mentions, but 
>> with a few mini toggle switches to make the connections to 
>> the various outputs to the rigs as needed.
>> 
>> Guess that's the difference in outlook between "hardware" 
>> types like me and "software" types, Hi!
>> 
>> Ron AC7AC
>> 
>> 
>> -----Oorspronkelijk bericht-----
>> Hi Dick,
>> 
>> You can 'PIC' just about anything. But in this case I will 
>> change the connection of a few wires if necessary using a 
>> soldering iron. Simple solution for a simple problem.
>> 
>> 73
>> Arie PA3A
>> 
>> 
>> -------------
>> 
>> < with 6 to 8 stereo jacks on the front and one or two outputs 
>> to key-in to tranceiver(s).  The idea is that everybody wires 
>> a key or paddle differently. (straight key to tip, sleeve or 
>> both;  single paddle to tip, sleave or both;  double paddle 
>> left to tip right to sleeve or just other way around)?
>> 
>> Let me know your thoughts
>> Thanks,
>> Dick PA3CW  >>
>> 
>> 
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