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BU-808: How to Prolong Lithium-based Batteries
Manufacturers take a conservative approach and specify the life of Li-ion in most consumer products as being between 300 and 500 discharge/charge cycles.…
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The latest blog posts to take off on Hacker News. 16 posts.
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10.1 inch Notion Ink Tablet - $375
Hello Everyone! The most awaited day has finally arrived! It took some time, but now when as we look back, it seems more than worth it. This is a rather detailed post and I will try to answe…
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A true single-sided circuit board.
In electronics, it is common to talk about single sided circuit boards. The most common type is a circuit board that only has printed wiring on one side, and components on the other side. There are also surface-mount boards, where all the wiring and components sit on one side. But aren’t all of those really just…
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Wattvision (YC W09) Now Shipping
Exciting News! Wattvision is now shipping the Wattvision Energy Sensor for digital and analog meters. We've graduated from our beta hardware to what you see in
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Hacker builds working 1/10th scale Cray 1
No hackerspace is complete without it's own rockin' supercomputer - and when a Gibson isn't available, a Cray-1 will have to do. My 1/10-scale,
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Unlocking and jailbreaking are now legally protected in the U.S.
San Francisco - The Electronic Frontier Foundation (EFF) won three critical exemptions to the Digital Millennium Copyright Act (DMCA) anticircumvention provisions today, carving out new legal protections for consumers who modify their cell phones and artists who remix videos — people who, until now...
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DIY: Cheap, ultra low-power radios that communicate over thousands of miles
QRSS is a term used in ham radio to mean "very slow speed morse code". QRPp means "using a very low power radio transmitter". What happens when you combine
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Antenna designer writes about the iPhone 4
I received a phone call today from PC Magazine. They were running a story on the new Apple iPhone 4, specifically the reports (PC Mag, Gizmodo, Engadget) that people are experiencing decreased reception on their cell phone when they hold the phone by the metal frame.
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