Few days ago Hackaday reported that after a failed Indiegogo crowdfunding campaign, MobilECG has gone open source. MobilECG is a medical grade 12 lead electrocardiograph that connects to USB port. It is designed to meet all the relevant medical standards (ISO 60601-1, etc.). It was designed to work with PCs, notebooks, and Android tablets. Records →
The Rise, Fall, and Rise of Electronics Kits is an interesting article mentions that many older engineers first became interested in electronics through hobbies in their youth—assembling kits, participating in amateur radio, or engaging in other experiments. The 1970s and 1980s were great times for electronics hobbyists. But whenever it seems that there’s nothing left →
It is expected that Internet of Things use is expanding quickly. But what about their security? I strongly encourage to read article The Internet of Things Is Wildly Insecure — And Often Unpatchable by well known security expert Bruce Schneier. It says that we’re at a crisis point now with regard to the security of →
The Internet of Everything is coming. The Internet is expanding into enterprise assets and consumer items such as cars and televisions. Very many electronics devices needs to be designed for this in mind. The Internet of Things (IoT) will evolve into the Web of Things, increasing the coordination between things in the real world and →
Yesterday evening tech news were all about Standardized Laptop Charger Approved By IEC. The IEC, the standards body which wrote the phone charger specification used in the EU, has approved a standardised laptop charger. IEC is optimistic that it will lead to a reduction in electronics waste and make it easier to find a replacement →
A better way to use datasheets than old-fashioned paper and pdf documents lying around? Hack Your Datasheets Using Datasheet.net article tells about a new service to view, snip, annotate and share information from millions of datasheets with engineers around the world. Take a look the datasheet.net introduction video: The biggest feature the datasheet.net service brings →
Counterfeit electronics components have caused problems for many companies. There are New Trends in Counterfeit Components. IEEE Spectrum magazine article The Hidden Dangers of Chop-Shop Electronics article tells now clever counterfeiters sell old components as new, threatening both military and commercial systems Usually, it’s good to recycle electronics products. The Hidden Dangers of Chop-Shop Electronics →
Thixotropy article tells about the technology of anti-shoplifting tags used on store merchandise. They are high-Q tank circuits which if carried between a transmitting and receiving panel at a store’s doorway, they enhance 9 MHz signal propagation between those two panels and the alarm goes off. When a purchase is made, the store clerk deactivates →
I have written about sending video signals over UTP cable. I have covered single composite video signal and audio. Now it is time to discuss sending VGA over UTP cable. Some DIY people (including me) have built different kind of adapters from VGA connector to RJ-45 connector. In best cases simple passive connection between those →
Here is the power supply that came with a cheap MP3 player. It is a power supply that takes in 230V mains power and outputs 5V at USB connector. What is wrong with this power supply? Let’s start with the electromechanical design. The mains connection pins that can be folded in and out at a →