DC-DC “inverter”

Sometimes devices sold as power inverter that claim to convert 12V to 230V AC (or 110V AC in USA) are not inverters at all, but DC/DC converters that output DC. I would say that calling such device “inverter” is not right, even though it might work with some originally mains powered devices. I have one

Linux maintenance challenges

Linux creator Linus Torvalds spoke about the challenge of finding future maintainers for the open-source operating system, at the (virtual) Open Source Summit and Embedded Linux conference under way this week. It’s really hard to find maintainers, says Linux creator. Maybe the damage was already done when Linus developed a bad reputation early on for

Ylläs transmitting tower

TV transmitting tower with microwave links and other telecom stuff like cell phone transceivers covered with snow. This is 150 meters tower that has typically 100-150 thousand kilograms of snow and ice in it during winter time. This picture was taken few days ago at Ylläs Lappland Finland. Picture is taken by me in February

Friday Fun: Engineering Flowcharts

This is a classic: Engineering flowchart: Does it Move? Should it? #WD40 vs. Duct Tape (original artist unknown) https://www.flickr.com/photos/dullhunk/7214525854 This image puts WD-40 on a level playing field of importance in the Duct Tape dominant world we live in! Or maybe we need something more? Here is the proper one with jb weld? https://fi.pinterest.com/pin/52354414392269479/ Here

C code include from stdin

I saw claim that you can include /dev/stdin in C/C++ code compiled with gcc at Facebook posting https://m.facebook.com/groups/2344226875800424?view=permalink&id=2591966714359771 That post made reference to article https://blog.hboeck.de/archives/898-include-etcshadow.html It looked interesting so here is my version of C code that includes some data/code from stdin at compile time: #include <stdio.h> int main() { printf(“%s\n”, #include “/dev/stdin” ); return

Friday Fun: nerdcore hip hop

Songs with commandments of hacking: nerdcore hip hop If you’re into any shady internet shit, listen to lyrics… Dual Core – 0x0A Hack Commandments [FREE DL] ytcracker – paint ytcracker – plead the fifth

Cyber security new December 2019

This posting is here to collect cyber security news in December 2019. I post links to security vulnerability news to comments of this article. If you are interested in cyber security trends, read my Cyber security trends 2019 posting. You are also free to post related links.    

The RIPE NCC has run out of IPv4 Addresses

https://www.ripe.net/publications/news/about-ripe-ncc-and-ripe/the-ripe-ncc-has-run-out-of-ipv4-addresses This announcement should not come as a surprise for network operators – IPv4 run-out has long been anticipated and planned for by the RIPE community. We have reached the end of the internet as we used to know it (IPv4). The cat has a cheeseburger. Rick Astley has given us up and let us

Arduino Pro IDE (alpha preview) with advanced features

https://blog.arduino.cc/2019/10/18/arduino-pro-ide-alpha-preview-with-advanced-features/ Arduino has a new interesting looking IDE coming. Now in Alpha version. The Arduino Pro IDE is a completely new Development Environment for Arduino Programming based on Arduino CLI, Eclipse Theia Open Source IDE and Electron framework. The Arduino Pro IDE promises to bring new features for advanced users whilst retaining continuity with the