Category Archives: solar

Laser Etches Solar Absorbing Material

Having a laser cutter these days isn’t a big deal. But [Chunlei Guo], a professor at the University of Rochester, has a powerful femto-second pulse laser and used it to create what might be the perfect solar absorber. You can see a video about the work, below.

It stands to …read more

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Posted in laser, news, science, solar, solar hacks, tungsten | Leave a comment

The Cult of Really Low-Power Circuits: Scrounging, Sipping, and Seeing Power

If you’ve ever tried to make a really low-power circuit — especially one that runs on harvested power — you have probably fallen into at least a few of the many traps that await the unwary in this particular realm of electronic design. Well, Dave Young has been there, seen …read more

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Posted in 2019 Hackaday Superconference, cons, low power, mppt, solar | Leave a comment

Teardown And Analysis Of A Cheap Solar Lamp

If you walk the aisles of a dollar store one constant that you will see worldwide is the Chinese solar lamp. Your dollar gets you a white LED behind plastic, mounted on a spike to stick into the ground, and with a solar cell on top. It charges in the …read more

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Posted in garden light, green hacks, led, solar, solar hacks, solar light | Leave a comment

AMSAT CubeSat Simulator Hack Chat

Join us on Wednesday, December 4th at noon Pacific for the AMSAT CubeSat Simulator Hack Chat with Alan Johnston!

For all the lip service the world’s governments pay to “space belonging to the people”, they did a pretty good job keeping access to it to themselves for the first 50

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Posted in cubesat, Hackaday Columns, PocketQube, satellite, simulator, solar, space, telemetry, testing, The Hack Chat | Leave a comment

Solar System Wars: Walmart versus Tesla

It seems like hardly a day goes by that doesn’t see some news story splashed across our feeds that has something to do with Elon Musk and one or another of his myriad companies. The news is often spectacular and the coverage deservedly laudatory, as when Space X nails another …read more

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Posted in Current Events, Featured, fire, forensics, green hacks, hotspot, investigation, MC4, news, Original Art, photovoltaic, solar, solarcity, tesla, walmart | Leave a comment

Give Your Solar Garden Lights A Color Changing LED Upgrade

White LEDs were the technological breakthrough that changed the world of lighting, now they are everywhere. There’s no better sign of their cost-effective ubiquity than the dollar store solar garden light: a complete unit integrating a white LED with its solar cell and battery storage. Not content with boring white …read more

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Posted in boost converter, color changing, garden, garden light, joule thief, led, led hacks, nocturnal solar light, solar, solar cell, solar hacks | Leave a comment

Pedal Far With A Solar Powered Tricycle

More and more electric bikes have been rolling out into the streets lately as people realize how inexpensive and easy they are to ride and use when compared to cars. They can also be pedaled like a normal bike, so it’s still possible to get some exercise with them too. Most have a range somewhere around 10-30 miles depending on battery size, weight, and aerodynamics, but with a few upgrades such as solar panels it’s possible to go much, much further on a charge.

[The Rambling Shepherd] had a tricycle (in the US, generally still considered a bicycle from a …read more

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Posted in battery, bicycle, bike, charge, electric, panel, range, recumbent, solar, transportation hacks, tricycle | Leave a comment

Energy Sipping Neodymium Sphere Keeps on Spinning

At this point we’re sure you are aware, but around these parts we don’t deduct points for projects which we can’t immediately see a practical application for. We don’t make it our business to say what is and isn’t worth your time as an individual hacker. If you got a kick out of it, great. Learned something? Even better. If you did both of those things and took the time to document it, well that’s precisely the business we’re in.

So when [Science Toolbar] sent in this project which documents the construction of an exceptionally energy efficient spinning neodymium sphere, …read more

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Posted in capacitor, coil, electromagnet, hardware, oscillator, solar, toy hacks | Leave a comment

Weather Station Is A Tutorial in Low Power Design

Building your own weather station is a fun project in itself, but building it to be self-sufficient and off-grid adds another set of challenges to the mix. You’ll need a battery and a solar panel to power the station, which means adding at least a regulator and charge controller to your build. If the panel and battery are small, you’ll also need to make some power-saving tweaks to the code as well. (Google Translate from Italian) The tricks that [Danilo Larizza] uses in his build are useful for more than just weather stations though, they’ll be perfect for anyone trying …read more

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Posted in arduino, battery, code, Microcontrollers, NodeMCU, optimization, panel, power, solar, Station, weather | Leave a comment

Perfecting the Solar Powered Web Server

Running a server completely off solar power seems like it would be a relatively easy thing to do: throw up a couple of panels, tack on a charge controller and a beefy battery, and away you go. But the reality is somewhat different. Most of us hackers are operating on a relatively limited budget and probably don’t have access to the kind of property you need to put out big panels; both pretty crippling limitations. Doing solar on a small-scale is hard, and unless you really plan ahead your setup will probably be knocked out on its first cloudy day. …read more

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Posted in charge controller, dithering, green hacks, linux hacks, olimex, olimexino, photovoltaic, server, solar, solar hacks | Leave a comment