ePanorama.net

All about electronics and circuit design

PC hardware vulnerabilities of summer 2022

There has been several BWAIN PC hardware vulnerabilities published this summer. BWAIN is a short name for a Bug With An Impressive Name. BWAIN is an accolade that we hand out when a new cybersecurity flaw not only turns out to be interesting and important, but also turns up with its own logo, domain name

Air gapped systems leak secrets in new ways

Some critical systems aren’t exposed to the public internet and sit, apparently safely, in an isolated environment, air gapped from the rest of the world by a lack of internet connectivity. The integrity of the air gap is only maintained when the means of data transport in and out of the environment are equally subject

Linux 6.0 is coming

Linux 6.0 is expected to arrive soon. The next version of the Linux kernel is jumping version numbers, with some performance gains, but it’s not a major change all the same: What was previously planned to be version 5.20 is now Linux 6.0 according to Linux 5.19 announcement. There will be new hardware support. Especially

Curve tracers

Curve tracing is a classic way to learn more about many electronic components. Curve tracing is essentially a means of making a graph of current (I) versus voltage (V) called an I-V curve, to display the basic characteristics of an electronic device. I-V curves of the components are helpful in understanding their limitations and nonlinear

Electrical power in Greece

In Greece the standard mains power voltage is 230 V and frequency is 50 Hz. The power plugs and sockets are of type C and type F. I also saw some Type L (Italian) power oulets at hotel This is a somewhat strange looking extension cord. Thetr are somewhat strange looking outlets on this permanently

Mosquito trap teardown

I got few years ago this cheap USB powered mosquito trap. The idea in it is that Blue/UV light gets the mosquitos to go near the device, and then the device sucks them away. This product was cheap, but was not very effective. When I tried this device this summer, it did not seem to

Mosquito repellent tech

Mosquitos don’t just whine in your ear and drive you mad with itching, but they also spread disease to more than 700 million people every year. Mosquitoes are attracted to carbon dioxide as well as the warmth and humidity you’re giving off. There are many different types of mosquito repellent. From zappers to catchers to

Friday Fun: Absurd Trolley Problems

The trolley problem is a series of thought experiments in ethics and psychology, involving stylized ethical dilemmas of whether to sacrifice one person to save a larger number. Absurd Trolley Problems https://neal.fun/absurd-trolley-problems/