Cars have become safer and safer, but still they crash too often. The increasingly safety design of vehicles presents rescuers with a serious challenge. On-board rescue sheet article tells that in particular, removing car roofs is becoming more and more problematic. Faced with high-strength steel and body reinforcements, even the most powerful cutters reach their →
Build your own metal detector article mentions a pretty interesting Diy Arduino based metal detector. The article starts with with an explanation of how most oscillator based metal detectors work. Most metal detectors uses a search coil that act as part of an oscillator circuit. When metal is put in proximity of the search coil →
I have searched for some time a suitable software (preferably free) that allows me to measure Bode plot of electronics circuits. There are commercial software, special hardware and special instruments for that (network analyzer can usually do that on radio frequencies), but I wanted something that uses the hardware I already has. After some searching →
I bought some time ago HC-SR04 Ultrasonic Sensor Distance Measuring Module to play with ultrasound distance measurements with Arduino Duemilanove 2009 Atmega 328P SCM Board. The working principle of the HC-SR04 Ultrasonic Sensor Distance Measuring Module when the module get trigger “start” pulse, it sends eight 40khz square wave pulses and automatically detect whether receive →
A seasoned veteran give tips and encouragement to an aspiring software engineer. For a software developer this is hilarious and a little bit creepy! →
Serialchart is an open source application for charting data sent via RS-232 port in real time. It runs on Windows. It is very suitable for a microcontroller (Arduino) project to graph the incoming data to screen. The incoming data should be in CSV format, with each point on a separate line. After some short tests →
I just noticed that MIDI turned 30 years ago just a short time ago. This 31.25kbd 10-bit, 16-channel network is still very much in use today, 30 years after its official 1.0 specification release in August 1983. I forgot to say “Happy Birthday MIDI” at the right day. The Register had an article series on →
Stephen Elop’s task on turning Nokia Mobile phones business to Microsoft compatible has come to end: Microsoft Corporation and Nokia Corporation today announced that the Boards of Directors for both companies have decided to enter into a transaction whereby Microsoft will purchase substantially all of Nokia’s Devices & Services business, license Nokia’s patents, and license →
Git and GitHub are not just for writing programming code. Book Authoring Using Git and GitHub article tells how they can also be an effective tool for writing articles and books. Matthew McCullough has written a quick guide to writing books in lightweight formats. If you are a writer and thinking of new ways to →
The best animated gif Pixar/NSA satire you’ll see today For background why this is so relevant, check the comments at Security trends for 2013 article. Check also USA vs NSA Animation Alternate Ending. →