Shields are your friend, except when… article tells that engineers just love to put shields on circuits, mostly as a defensive measure against signals on the outside getting into and disturbing our circuits, but they also keep signals inside from getting out and this really makes the folks responsible for EMI compliance happy. Even on →
Assembly Summer 2013 computer festival was held last weekend. Many earlier years I have been actively participating in it (even been on organizers team), but for last few years I have skipped that event (I am getting too old for this?). In assembly Assembly event there has been interesting computer demos on the competitions. Something →
Software freedom is an interesting concept, but being able to study the source code is useless unless you are certain that the binary you are running corresponds to the alleged source code. It should be possible to recreate the exact binary from the source code, but a simple analysis shows that this is very hard →
Are you afraid of hackers? If not yet check out the scariest new tricks at this year’s twin computer crime conferences, Black Hat and Def Con. The top 10 new reasons to be afraid of hackers article tells that it’s traditional for these skilled programmers to unveil their greatest exploits at the conventions, prompting a →
HTML5 has opened many new possibilities for developers. Now you can use web technologies to build full mobile applications, not just web pages. When you are building those application you need to know The Security Risks of HTML5 Development, because HTML5 includes a number of useful features that pose as double-edged swords from a security →
I was interviewed by EEWeb Electrical Engineering Community. The interview is published now with title Featured Engineer: Tomi Engdahl – ePanorama.net webmaster. This is not my first interview for this reason. Years ago Elektor Electronics magazine interview me Tomi Engdahl – the man behind epanorama.net →
Hackaday mentioned some time ago an interesting Arduino cellphone. The fact that you can build a cellphone around an Arduino is pretty neat: An Average Joe can build this thing with a minimum or background knowledge and without breaking the bank. Wow. The components include and Arduino Uno, GPRS shield from Seeed Studios, a TFT →
I have written earlier about USB and Ethernet audio. Audio networking offers key benefits, like a dramatically reduced cable infrastructure, easy audio signal copying and routing, etc.. Control Geek blog has just a new interesting posting related to this topic: Dante, AVB, and a Visit to the AVnu Testing Lab. Dante, AVB, and a Visit →
Web technologies like HTML5 are the future of mobile application development, but there are also problems: many Mobile web apps are slow. JavaScript performance is essential to many modern web apps. When Java applets failed, JavaScript became the language of the Web. One big reason for slowness of many mobile apps is that is that →
I just happened to find an interesting presentation on light dimming technologies and who they work with LED lighting. Dimming LED sources: what’s working and what still needs fixing is a worth to take a look if you are into LED lighting or light controlling applications. It is a very good overview of the current →