I have had this cheap USB endoscope for few years. Then it suddenly stopped working. So I opened it up to see what is inside and hopefully fix to work again. The problems seems to be loose green wire. A bit of soldering and it works again. Not much electronics. Just wiring from USB connector →
https://opensource.com/article/18/7/sysadmin-guide-selinux Security. Hardening. Compliance. Policy. The Four Horsemen of the SysAdmin Apocalypse. In addition to our daily tasks—monitoring, backup, implementation, tuning, updating, and so forth—we are also in charge of securing our systems. In the spirit of The Hitchhiker’s Guide to the Galaxy, here are the 42 answers to the big questions about managing and →
https://www.baldengineer.com/six-oscilloscope-measurements-using-arduino.html You can use these 6 oscilloscope measurements, and just an Arduino Uno, to learn how to use a new or unfamiliar digital scope. This tutorial is a general explanation on how to setup the Arduino and a screenshot to help identify if you set up your scope correctly. →
Remote powering implies that the power equipment is not local but some distance away. This article is remote powering audio edition. It can be seen a continuation of my earlier Remote powering over communications cabling posting series. Microphone: Plug-in-power Plug-in power is designed to power electret microphones through same audio cable that carries audio. Most →
https://opensource.com/article/18/4/introduction-python-bytecode Python source code files; they have names ending in .py. And you may also have seen another type of file, with a name ending in .pyc, and you may have heard that they’re Python “bytecode” files. But beyond “oh, that’s Python bytecode,” do you really know what’s in those files and how Python uses →
https://opensource.com/article/18/7/requests-for-comments-to-know Reading the source is an important part of open source software. But “read the source” doesn’t apply only to code. Understanding the standards the code implements can be just as important. “Requests for Comments” (RFCs) published by the Internet Engineering Task Force (IETF) are important for Internet technologies. This article collected a few RFCs →
https://opensource.com/article/18/7/requests-for-comments-to-knowReading the source is an important part of open source software. But “read the source” doesn’t apply only to code. Understanding the standards the code implements can be just as important. “Requests for Comments” (RFCs) published by the Internet Engineering Task Force (IETF) are important for Internet technologies.This article collected a few RFCs (from thousands →
https://predictabledesigns.com/top-resources-for-hardware-startups-and-makers/ Hardware startups and makers can use all the help they can get. It can be difficult, however, to find resources for developing a physical hardware product (as opposed to software). This article has a list of 30 online resources for those developing new electronic products. This article was originally published on PredictableDesigns.com and there →
https://spectrum.ieee.org/static/chip-hall-of-fame To honor and tell the stories of these renowned blobs of silicon—and their creators and users—IEEE Spectrum has created the Chip Hall of Fame. This is an interesting set of chips to remember. →
https://spectrum.ieee.org/energywise/energy/nuclear/a-double-first-in-china-for-advanced-nuclear-reactors The most advanced commercial reactor designs from Europe and the United States just delivered their first megawatt-hours in China. Both projects were years behind schedule. On Thursday, 29 June, a 1,400-MW EPR designed in France and Germany synced up to the grid at the Taishan nuclear power plant. The next day the U.S.-designed 1,117-MW →