You may know of grid squares for general location in a ham radio contest, or the What3Words system with its easy access if you have network access, but there is another often-used location project you may not have heard of which is also easier than sharing a long latitude and longitude number!
Continue reading “Plus codes as an easy location-sharing option”Are Electric vehicles the way to go? A mathematical look at the economics of EVs
There have been a lot of items in the news about electric cars recently – many states have rebate for new vehicles, and federal tax incentives will be a complicated and interesting opportunity next year. The car company website would certainly say you will save a lot purchasing their vehicles, but there is a surprisingly easy way to estimate for yourself whether an EV is cost effective.
Continue reading “Are Electric vehicles the way to go? A mathematical look at the economics of EVs”Hacktoberfest is coming up
It’s that time of year again, with leaves falling, people getting in from the cold and wind and getting in to coding… Hacktoberfest is just a few days away!
Continue reading “Hacktoberfest is coming up”QSO Today conference is coming up!
QSO today conference is coming up next month! Check out the details here for the list of presentations and gallery projects including Hearham.live, HF, Arduino, Antennas and Smith Charts and more!
Puzzles – an open-source collection
Many mathematicians enjoy puzzles – and digging in to interesting code. Simon’s Puzzle collection is an open source collection of puzzles that any mathematician would enjoy:
Continue reading “Puzzles – an open-source collection”Pinetime update with Gadgetbridge
If you use a Pinetime you may not have updated it since you received it…? If so you may be missing some features such as alarm, improved heartrate monitor and now, swipable notifications. Fortunately it is easy enough to get it updated…
Continue reading “Pinetime update with Gadgetbridge”The end of TigerVPN… and what you can replace it with
If you have tried TigerVPN recently you may have noticed nothing but connection errors… and visiting the website, you may have noticed the message…
Continue reading “The end of TigerVPN… and what you can replace it with”Testing solutions to the 100-prisoners puzzle.
Both Matt Parker and the Youtube Veritasium channel have reviewed the surprising best practice for the 100 prisoners puzzle. The puzzle is a way to find a solution that will let the prisoners win with the most probability. If you have not seen this already please see the video here before some spoilers below.
Continue reading “Testing solutions to the 100-prisoners puzzle.”Optimal placements and unsolved math problems
Optimal placements and unsolved math problems are among the interesting problems discussed in the book, Tomorrow’s Math, Second Edition by C. Stanley Ogilvy. On chapter two, pg.23-24 he asks how a land’s defenses may be best defended by n defense stations on a disk shaped land area? They state it had known answers for n<6, and “a general solution seems remote at present”.
Continue reading “Optimal placements and unsolved math problems”OpenShot on Ubuntu 22.04
If you install OpenShot on Ubuntu 22.04 or other newer Linux distributions you may note that it doesn’t run – which is an easy fix. Running the program from the terminal gave an error:
Continue reading “OpenShot on Ubuntu 22.04”