In Ben Sparks’ video he shows a very interesting trick. On a decimal angle calculator run:
If your calculator has more than the standard Ubuntu calculator’s digits of accuracy you could add even more repeating 5’s. The answer is approximately PI with extra zeros…
Since today is Twosday (2-22-2022 in any date format), here is a similar Tuesday math trick for the Python console:
from math import sin
It is also .0003142… or approximately Pi!
Continue reading “Happy Twosday! and a Surprising Pi trick”
One thing many don’t consider when setting up a GTK+ window application is that the same code that runs on a Linux phone or Linux computer, can also run on MS Windows with the same libraries! Next time you are on a Windows system and trying to set up a command or tool normally working on Linux, try this:
Continue reading “Linux tools on Windows with MSYS2 (And a Repeater app for Windows!)”
There may be times you have a simple choice or listing in a GTK list box – for this example, in choosing a serial connection or other device. Glade is a good way to build an application window easily with an interface to build in to your app on Linux desktop, Ubuntu or Librem phone or other Linux based phones. I was able to use this to create a Winlink user interface for the previous tutorial to call up the Pat interface.
Continue reading “GTK Choice box with Glade and Python”
A previous posting showed how to set up Winlink through basic internet (Telnet). Internet/Wifi may or may not be available in any emergency, however, so it is important to be able to work Winlink over a VHF/UHF radio – which is the main benefit of WINLINK over e-mail, after all. To get this working you will need a radio, a TNC, and computer with the Pat or Winlink program. For my test I use a Yaesu FT-70 handheld, Mobilinkd TNC3, and Pat on a Linux computer.
Continue reading “Pat + Winlink with handheld radio and handheld Mobilinkd TNC”
As of last weekend, the Wireless Institute of Australia Database is included, with permission, into the database backing Repeater-START app. This improves the listing with hundreds of repeaters local to Australia brought in from their listing.
Continue reading “Hearham.live repeater listing now includes Australian database”
You may have noticed an issue with Youtube dislike count getting hidden, and it’s not just you… Youtube recently removed the dislike count, and hides it.
Continue reading “Where have all the dislikes gone?”
As you may have noticed, this past week saw major warnings for major Java applications or web services using Java and Log4j 2.x earlier than 2.15.0. You may wonder, how might this affect you and how can you tell if you are affected?
Continue reading “The new Log4j and how it may affect you”
A recent research project documented in Science shows a project they built to emulate the functionality of bird talon/grasping:
Continue reading “How to Train a Bird Robot”