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I use Eclipse only on and off, and I can not remember which version it was last time. Anyway it is Luna now.

We have lots of errors because Ncurses is not yet installed on the machine.

This figure shows a pattern generator output (red), and an actual signal from the paddle (yellow). Not bad?

Two signals are not linked, so observing two traces at the same time is just a coincidence. And I must add that I do not have key chattering every time I manipulate the paddle. Some patience was required to get this nice picture.

Usually you need either a pull-up or a pull-down resistors for you input pins. With my old K3NG CW Keyer I forgot the details and thought I put some resistors on the board. But actually, the internal pull-up resistors were used for which some care is necessary for your code like:

pinMode(pin, INPUT);           // set pin to input
digitalWrite(pin, HIGH);       // turn on pullup resistors

Or more simply,

pinMode(pin, INPUT_PULLUP);

Anyway, a single touch to the paddle causes several interrupts since there is no circuit implemented on the board to take care of the contact bounce.

“In my younger and more vulnerable years…” ― F. Scott Fitzgerald, The Great Gatsby

When I was young and perhaps a little bit vulnerable, my memory was almost empty. So if you have some questions like:

you must look out at the outer world for the answer and do not look into your own memory.

And after coming a long way down the track, someday you will notice that you are doing an exhaustive search of your memory for an answer, thinking “There must be an answer there, because I have done it before“.

So getting old is, for one thing, not being vulnerable any more, but becoming too much self-contained for another.

I think I should always try to do something new (a new language? a new skill?) to avoid being excessively self‐sufficient.

[polldaddy poll=8401105]

Back to the Future is one of my favorite films. Marty travels back to 1955, and Johnny B. Goode is a song released in 1958.

You can watch the original performance at http://chuckberry.com/864/.

Cygwin/X is a port of the X Window System to the Cygwin, which provides a UNIX-like API layer for the Microsoft Windows.

I do not like to do everything on Cygwin, but just using an X server is acceptable for me.

Here HP-dv6 is a UNIX machine to which an ssh connection with X11 forwarding is established.

I am now moving from Ubuntu 12.04 LTS (32-bit) to 14.04 LTS (64-bit). Three PCs done, and three more to go.

It took me some time to install Adobe Reader, because they provide only 32-bit binaries. After some trial and lots of errors, here we have:

If you do wish a quick solution, the following article may help.

http://ubuntuhandbook.org/index.php/2014/04/install-adobe-reader-ubuntu-1404/

I like Unix, but I do not like Linux, and I do not like Ubuntu, either.

Rebuild the stub match, and it works fine now. I can QRV on 40m band. Please check the page Antenna for the detail.

I use my PCs relatively for a long time, but sometimes I re-install the whole system with some reasons. Last week, I bought a new HDD, and since I do not back-up my important files not intensively, I restart almost everything from the ground.

So this article is to save me the time for setting up Logger32, assuming that this information is available when I need it next time.