Aren’t ball races and marble runs fun? Wouldn’t they be so much more enjoyable if you didn’t have to climb back up the ladder each time, as it were, and reset the thing? [Johannes] wrote in to tell us about a wee robot with the Sisyphean task of setting a ball bearing on a simple but […]
SISYPHEAN BALL RACE ROBOT TOILS GRACEFULLY, MAGNETICALLY Continue Reading
Out of curiosity I ordered a tiny ESP8266 relay switch board from aliexpress.com, for next to nothing. Blissfully unaware, then, of the struggle ahead to make the thing work as advertised. I survived and conquered — here’s the story. By Somnath Bera The little gizmo pictured in Figure1 was stated by the vendor(s) to contain an inbuilt
FREE ELEKTOR ARTICLE: A 3-DOLLAR TINY WI-FI SWITCH THAT WORKS Continue Reading
Charge and protect your devices while blocking data syncing and “juice jacking.” For work, home, travel, everywhere! What is Umbrella? If you charge via USB – which all smartphones and tablets do – Umbrella will protect your data. When connected to any USB port, Umbrella allows power to flow to your device so it can
So it’s been a while since I last posted about my OLED watch, and I’ve done a lot of work on it! (And also broke it multiple times) It’s taken me a lot of work to get this far, and I developed EVERYTHING from the ground up. The electronics design, the PCB layout, the RTOS
OLED Watch Is Alive! Continue Reading
Nexus Electronics and electronic enthusiasts Zack Seifert has created a new multipurpose sensor development board aptly named the SENSE which is now available to backfire Kickstarter and has already blasted past its required pledge goal with still 27 days remaining. The small SENSE board features a variety of sensors and the ability to air quality, sound, light,
SENSE multipurpose sensor development board £29 Continue Reading
Researchers at Penn State have developed a fast charging technique to charge a battery in in electric vehicle in just ten minutes. By Nick Flaherty @ www.eenewspower.com The fast charging technique uses a self-heating battery design to provide faster charging at 60ºC, while cooling the rest of the system to make sure that the battery doesn’t
IN AND OUT WITH 10-MINUTE ELECTRICAL VEHICLE RECHARGE Continue Reading
The Logitech Z906 is a well-rounded 5.1 surround sound system. It’s capable of putting out 1000W in peak power, and can decode Dolby Digital and DTS soundtracks as you’d expect. It’s intended to be used as the heart of a home cinema system and used with a central command console. However, [zarpli] figured out the
HACKING THE LOGITECH Z906 SPEAKER SYSTEM Continue Reading
Two new 12-inch colour TFT displays from Display Technology Ltd offer superior performance for applications that require consistent readability in challenging conditions or full-HD with high image quality and low power consumption. The AUO G121EAN01.2 12.1″ WXGA display has outstanding white luminance of 1000Cd/m2 (typical) to display images, graphics, and text clearly under a high
If you’ve been to a bar sometime since the 1930s, you’ve probably spied someone drinking a Tequila Sunrise. It’s a drink that mimics the beautiful colors of the dawn. In much the same way, so does this Sunriser keyboard build from [crashl1445]. Built for a high-school engineering project, the build looks resplendent with its yellow case,
SUNRISE KEYBOARD LOOKS THE PART Continue Reading
Quantum dots have offered an attractive option for photovoltaics. Multijunction solar cells made from colloidal quantum dots (CQD) have been able to achieve around 7-percent conversion efficiency in the lab. While figures like this may not seem too impressive when compared to silicon solar cells, their promised theoretical conversion efficiency limit is an eye-popping 45
Quantum Dot Solar Cells Break Conversion Efficiency Record Continue Reading
