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Well, I tried to jump in.
Clicked the 40M option on his poll, no response.
Clicked VoteNow, and it said ThankYouForVoting, but still not in the list an a couple hours later.
Tried posting to the [email protected], clicked the green ReplyToGroup button, looked good,
except still not seeing it on the website an hour later.
Had sent email to Steve a few weeks ago when he said he had 10 remaining from the previous run,
never got a reply.

Well, I now see that the poll shows up a bit different in my browser if I click on the individual message
rather than try to vote using the web interface into the the "messages" page.
? ??/g/kd1jvdesigns/message/161
But I'm not so sure I want to promise to buy one if I can't communicate with him.

Could be some of this explains why Steve's not sure there's enough interest to do another run.?

Jerry



On Sun, Jun 24, 2018 at 10:56 am, Jerry Gaffke wrote:

I think is your best bet.
Steve has a poll going now, asking if there is interest in a new run of boards.
If you want one you should join the group and respond to that.
I may jump in there as well.

If and when he does decide to create more kits, he will post a message to the group
with instructions on how to order.? Not sure how that happens now, but his CW rigs
sold out fast and you had to respond within a few hours.

Steve did maintain a website in the past:??
but that has not been updated in years.
He's more interested in building radios than being a webmaster.

Jerry

I've got a black dial phone from perhaps the 40's. in the basement somewhere.
That would be very cool to have as the UI into my uBitx.
Won't want to get just too aggressive with the debouce.


On Sun, Jun 24, 2018 at 01:58 pm, Arv Evans wrote:

But......I thought this problem WAS a nail!? 8-)

I did try 4 different keypads that have resided in my junkbox long enough to have

accumulated some dust and maybe even corrosion.? You are right, one of them (an

escapee from a long dead calculator) did show intermittent decoding, but after a bit

of exercise it now seems more reliable.? I built the initial resistor matrix external to

the keypad so I can try different keypads.? Maybe it would be worthwhile to try

making a discrete switch based keypad from 16 of the tiny push-switches that are

available for less than a cent each on Ebay??

Long ago I purchased a few keypads which have plastic domes that click over-center

and make hard mechanical closures (with lots of contact bounce).? If I can find them

they will get tried in the present testbed.? Might be interesting to see what is required

to debounce those antiques.?

?

Being an ancient telephone engineer the concept of "sealing current" comes to mind

as a possibility for use based improvement of questionable keypads.? Another option

is that they are usually very inexpensive and thus the bad ones can be trashed with

no regrets.?

This is fun!? 8-)

That whole idea of using voltage to determine keyer state makes me nervous. Even something as simple as corrosion on the contacts can make a difference. Take Field Day. Some CW operators bring their own paddle sets to the event and switch when it's their turn at the helm. It's possible for something that simple to make enough of a difference to screw things up. Farhan worked out a solution that was defined by the constraints within which he had to work. My solution is to throw a new processor with a small forest of pins at the problem, which I've done. Others have gone to a less pin-intensive solution for the LCD display (e.g., I2C or SPI), thus freeing up pins that can directly read paddle states. Many simply don't care because they don't use CW.

You are right, however, in that the problem has caused people to rethink the problem(s) and that's almost always good. After all, if the only tool you have is a hammer, it's not surprising that all problems look like a nail.

Jack, W8TEE

On Sunday, June 24, 2018, 4:28:06 PM EDT, Arv Evans <arvid.evans@...> wrote:

Mark? N1VQW

I built a similar SNA, but control it via USB/tty link from a Raspberry-Pi.?

The keypad idea of using a single ADC input to decode keystrokes seems

intriguing to me.? This morning I set up the code so it uses a range of voltage

values for each key, and added a time delay for debounce.? using a voltage
range window seems to give me latitude enough for using standard value
resistors in the R-matrix.? Initially I set up the code to just show the value as
each key was pressed, then rewrote it to use those values as targets.?
I divided the difference between voltage values for each key by 2 and used
that to generate the tests for each key.? Code is not efficient yet as it is just a
bunch conditionals but once it is working I can go back and make it pretty.?
Next question is how much will RF affect the keystroke voltage readings?

This activity is generating some interesting thoughts about possibilities for a
new Raduino design...with OLED display, Keypad, Rotary Encoder, RTC,
Si5351a, and more.

Arv? K7HKL
_._

On Sun, Jun 24, 2018 at 11:34 AM Mark Pilant <mark@...> wrote:

Hi Arv.

I used a similar keyboard for a Scalar Network Analyzer I built.? (Before I
found out about the PHSNA :-)? It turned out to work very well.? I did run
into a few issues worth mentioning.

Make sure you have some form of switch debouncing (software or hardware) as
part of the design.? I had both in my design.? ?Also, make sure you take into
account the resistor tolerances when determining the analog value for any
given key.? (Part of my SNA design was a set of calibration tasks, one of
which was the keypad.)

I'm building a uBitx with a TFT, and may include a soft keypad to augment the
encoder.? (If I can find the time... too many projects :-)

73

- Mark? N1VQW

BTW, feel free to look at the SNA code:

I don't think I'd use an analog approach to it. I'd use something like: ()

You can find code at:

Jack, W8TEE

On Sunday, June 24, 2018, 1:34:36 PM EDT, Mark Pilant <mark@...> wrote:

Hi Arv.

I used a similar keyboard for a Scalar Network Analyzer I built.? (Before I
found out about the PHSNA :-)? It turned out to work very well.? I did run
into a few issues worth mentioning.

Make sure you have some form of switch debouncing (software or hardware) as
part of the design.? I had both in my design.? Also, make sure you take into
account the resistor tolerances when determining the analog value for any
given key.? (Part of my SNA design was a set of calibration tasks, one of
which was the keypad.)

I'm building a uBitx with a TFT, and may include a soft keypad to augment the
encoder.? (If I can find the time... too many projects :-)

73

- Mark? N1VQW

BTW, feel free to look at the SNA code:

Hi Arv.

I used a similar keyboard for a Scalar Network Analyzer I built.? (Before I
found out about the PHSNA :-)? It turned out to work very well.? I did run
into a few issues worth mentioning.

Make sure you have some form of switch debouncing (software or hardware) as
part of the design.? I had both in my design.? ?Also, make sure you take into
account the resistor tolerances when determining the analog value for any
given key.? (Part of my SNA design was a set of calibration tasks, one of
which was the keypad.)

I'm building a uBitx with a TFT, and may include a soft keypad to augment the
encoder.? (If I can find the time... too many projects :-)

73

- Mark? N1VQW

BTW, feel free to look at the SNA code: