Geekdad has a bunch of tips for using the round power-cells from a dead laptop battery. These cells, called "18650s," look like AA batteries, but have very different characteristics. Your laptop battery will contain lots of these (I have a mongo long-lived Thinkpad battery that I use while travelling with nine cells), and if any one of them dies, the whole laptop battery is rendered useless.
18650s are incredibly powerful and volatile, so be careful, because it's easy to blow 'em up or start a fire. That said, they're awful handy-dandy for providing a very long charge for very bright LED flashlights, or for powering your RC vehicles.
By the way, a good quality LED flashlight is incredibly bright. I tried to take some pictures and video to demonstrate just how bright, but you really have to see this with your own eyes, in person to appreciate it. And the LED is incredibly power-efficient, so it runs for a very, very long time on a single charge. It’s easy to see that the future of household lighting is not compact fluorescents, but LEDs...
18650 Things To Do With An Old Laptop Battery
In the video, I’m actually powering the Arduino as well as the motors, and I’m surprised it works. Motors tend to create a lot of electrical noise, and I’ve read about many other people who ran into trouble using a common power source for their Arduino and their motors. I presume I’d start seeing trouble if I was driving a heavier load than those little Lego motors.
(via Red Ferret
When I wrote about the Haunted Mansion loot crates (“Ghost Post”) last March, what I couldn’t say was that I was a writer on the project, penning the radio scripts, newspapers, letters, and associated gubbins and scraps that went along with the three boxes of custom-made props and merch, tying them together into a series […]
According to a lawsuit filed Tuesday in Chigago, Bose uses software to track the music and other audio listened to on its wireless headphones, violating the privacy of its users and selling the information. The complaint filed on Tuesday by Kyle Zak in federal court in Chicago seeks an injunction to stop Bose’s “wholesale disregard” […]
Bose’s $350 wireless headphones need an app to “get the most” out of them, and this app monitors everything you listen to — the names of the podcasts, the music, videos, etc — and sends them to Bose without your permission, according to a lawsuit filed this week in Chicago by Kyle Zak.
Yeah, Bluetooth audio is pretty common these days, so why should you care about these earbuds? Look how happy that woman up above looks. She’s got FRESHeBUDS in. Boom. There’s your reason. She’s also at the beach and it appears to be a very nice day.But for the sake of promotion, wireless earbuds are fast becoming the […]
“Gets stuff done,” is a good way to be described by anybody. Especially by coworkers or bosses. Because whether you’re in finance or a children’s librarian, stuff needs to get done. But how do you make sure stuff gets done? You definitely can’t do all the stuff yourself, unless your company/organization/government office consists entirely of you. And […]
Even the most expensive pair of hi-fi headphones can’t match the feeling of bass rumbling through your body at a live show. That’s why music aficionados designed The Basslet, an accessory that reproduces that sensation from your wrist. Does it make your whole body shake with deep subs? Not really, because that would be terrifying, but […]