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89 items tagged "green"
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15:01
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Hack a Day
This home is heated by a wood stove in the winter, which also produces hot water. But the other three seasons it’s an electric water heater that does the work. This latest hack is a solar collector meant to take over the hot water production work for the house. it uses basic building materials and [...]
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17:01
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Hack a Day
[Jason Wright] and [Jeremy Blum] are showing off the project they developed for their Designing with Microcontrollers course at Cornell University. They call it the Heliowatcher, and if you know your Greek mythology we’d be you figured out this watches the movement of the sun and adjust a solar panel to follow it. Their design is simple [...]
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12:01
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Hack a Day
[Bryan] got his hands on a solar panel and decided to take it on the road rather than throwing it on the roof of the house. On sunny days it will top off the car battery, letting him use his stereo in the middle of nowhere without needing to keep the engine running. Instead of [...]
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11:01
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Hack a Day
This isn’t a brightest flashlight in the world type of hack (but it does manage to push about 1000 lumens). [Stephen Webb] is finding a use for leftover parts by building his own simple LED flashlights. As you can see, he uses PVC parts available at any hardware or home store. These are a good [...]
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4:01
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Hack a Day
[Guelherme Pena Costa] came up with an idea to light up a swing set using the motion of the people swinging on it to generate electricity. The goal was to get people to enjoy the playground at night and we think, this might actually be a pretty good way to achieve that. People love blink [...]
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13:01
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Hack a Day
Check out this solar-powered Stirling engine (translated). The build is part of a high school class and they packed in some really nice features. The first is the parabolic mirror which focuses the sun’s rays on the chamber of the engine. The heat is what makes it go, and the video after the breaks shows it [...]
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17:01
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Hack a Day
After years of hoping and wishing [Dave] finally took the plunge and installed solar panels on the roof of his house. He’s got twelve panels that are each rated at 240 Watts! But just having them sitting there and pumping power back to the grid isn’t enough. Understandably, he decided to add his own solar [...]
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9:38
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Hack a Day
Both our electrical meter and our gas meter are located in the basement of our house (we recently had the gas meter moved outside though). When people see this they always ask if the meter readers have to come inside once a month. The answer is no, these meters broadcast usage data which is picked [...]
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13:01
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Hack a Day
We wonder if a floating wind turbine generator (translated) like this one would alleviate some of the complaints we hear about ground-based turbines. This huge helium-filled structure is designed to generate electricity at high altitude, where winds are stronger and blow much more consistently than near ground level. We’ve read complaints at the unsightliness of wind farms, [...]
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13:01
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Hack a Day
[Jay Kickliter] built his own coin cell battery recharger. This won’t work on the vast majority of coin cells as they are manufactured as disposable parts. But there are rechargeable options out there with model numbers that start with LR instead of CR. In this case he tailored the charging circuit around MCP73832 IC and [...]
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14:31
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Hack a Day
[Craig] tried heating his greenhouse last winter, but really only managed to push the limits of his utility bills. This time around he took a different approach by building a system to warm the soil in which his vegetation is planted. The core of the system is this box which houses the plants. It is lined with heating tape [...]
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10:01
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Hack a Day
Someday you may be able to use your crotch or armpits to recharge that cellphone. Heck, maybe there won’t even be a battery, just a capacitor which gets its juice from Power Felt, a fabric that converts body heat to electricity. Now we mention the nether-regions because it’s funny, but also because it makes the most [...]
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5:01
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Hack a Day
Although there are several vertical axis wind turbines listed on greenterrafirma’s page, the one built with 55 gallon drums was especially interesting to us. Although the spouse approval factor of any of these designs is debatable, at $100, the 55 gallon drum design could provide a very good return on investment. The tools required to [...]
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7:51
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Hack a Day
Add some fruit to your indoor bounty with this hydroponic strawberry farm. [Dino] whipped this up as his 45th hack a week episode (getting pretty close to his year-long goal). He used parts you probably already have sitting around the house somewhere. But even if you bought everything and used it once you still wouldn’t [...]
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10:01
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Hack a Day
[Yuhin Wu] wrote in to let us know about the Automated Recycling Sorter that was built with a group of classmates at the University of Toronto. They entered it the school’s student design contest and we’re happy to report that it took first place. The angled sled has been designed to separate glass, plastic, and [...]
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12:24
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Hack a Day
[Mathieu] just finished analyzing the numbers from a month of solar energy harvesting. You may remember that he was curious to see what kind of energy can be collected from small solar cells used indoors. He built several copies of a test platform which collected data between December 16th and January 16th. First of all, [...]
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13:34
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Hack a Day
[Mathieu] was interested in using more solar cells for his everday electronics. He looked around but couldn’t find much information about using pholovoltaic for small indoor devices. We remember hearing some of the same things from [Dave Jones] in one of his EEVblog installments from a few years ago which looked at solar calculators; the [...]
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10:03
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Hack a Day
Here’s a photovoltaic cell that can be printed onto paper. The manufacturing technique is almost as simple as using an inkjet printer. The secret is in the ink itself. It takes five layers deposited on the paper in a vacuum chamber. But that’s a heck of a lot easier than current solar cell fabrication practices. [...]
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11:01
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Hack a Day
With grand plans of tenting out for several days at a music festival [Josh] needed a way recharge his portable devices. In the past he’s lugged around a 12V battery with him, but this year he wanted to make things easier. He ended retrofitting a camping light to do the job with the help of [...]
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9:01
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Hack a Day
Looks like New York’s fire brigade confiscated all of the gas (or bio-diesel) generators from Occupy Wall Street protesters in Zuccotti Park. Apparently the Fire Chief cites the generators as a fire hazard. This seems a dubious claim. One of the shots in the video after the break clearly shows fire extinguishers close at hand, but [...]
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10:01
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Hack a Day
As soon as the team at Revolt Labs heard Occupy Wall Street was coming to Boston, they decided to pick up their soldering irons in support of the throngs of protestors. They came up with a Solar charging USB box to keep those cell phones and digital cameras charged. The case came direct from an [...]
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8:01
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Hack a Day
We often look at battery-operated hardware and shake our heads at the wastefulness of throwing away disposable batteries. There are some devices that minimize the waste, like those TV remotes that seem to never need new cells. But the C cells that [Quinn Dunki] kept replacing in her elliptical trainer were only lasting about three months at [...]
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6:00
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Hack a Day
With a little bit of thought put into the build, a wind turbine generator can be one of the greenest ways to generate electricity. Wind power doesn’t require a semiconductor fab lab (unlike solar panels) and doesn’t have very many environmental consequences (unlike hydro power). The Tech Junkies put up a build log of a [...]
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14:01
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Hack a Day
Here we see [Christopher Suprock] hanging out in his basement laundry area in order to show off his intelligent heat exchanger. The reason for the device is simple, when you use your clothes dryer , hot water heater, other other utilities that generate heat, energy is often wasted in the form of hot exhaust gases. [...]
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5:01
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Hack a Day
Yes. That’s a motorized tricycle with a toilet. Let that sink in for a minute. Oh, that isn’t a concept sketch of something that will never be built. The Toilet Bike Neo is most assuredly a real thing. Biogas, or methane produced from decaying plant or animal wastes, is a legitimate form of energy. Waste [...]
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6:00
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Hack a Day
Here’s a project that’s hard to categorize. It generates electricity by burning wood. The diamond-plate wrapped column to the right is a magazine that stores the wood, which is gravity fed as pieces below are consumed. The heat is used to drive a power turbine which is responsible for generating the electricity. This begs the [...]
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6:00
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Hack a Day
Sometimes you don’t need a lot of horsepower to win a speed record. In a fluke of no one else competing in the alt fuel class, [John]‘s biodiesel motorcycle set a new land speed record at the LTA event last summer. [John]‘s bike is a junkyard 1978 Kawasaki KZ400. The stock engine was replaced with a [...]
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6:00
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Hack a Day
It’s not environmentally friendly, but most of us run a small home server 24 hours a day. A small server is a useful tool to have that unfortunately wastes a lot of energy. [kekszumquadrat]‘s thin client home server is actually a passable LAMP box that doesn’t draw a ton of power. [kekszumquadrat] started looking at [...]
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6:00
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Hack a Day
Sometimes, changing one little bit of a green hack turns it into a build that wastes as much energy as our gaming rig. [Dr. West]‘s automatic window controller is one of these builds. The good news is the window controller can be easily modified to cut energy costs in the fall and spring. [Dr. West] [...]
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6:00
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Hack a Day
[Michael] took a battery charger meant to be connected to mains power and converted it to work with a solar panel. This was a traditional 4 cell charger which charges the batteries in pairs. He kept that functionality, but added USB charging with a special over-current feature. That’s because his Android phone has a fast [...]
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6:00
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Hack a Day
Hit your parts bin and set aside an afternoon to build a wind turbine that recharges batteries. You can see two AA batteries hanging off the side of this small generator. You only need a few parts to make this happen, and chances are you have them sitting in your junk bin already. The generator [...]
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7:01
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Hack a Day
Although we’ve featured many chicken-related hacks here, this chicken coop features a solar-powered door to save one from having to open up the coop in the morning. As [chrisatronics] puts it “keeping chickens has one major drawback: You have to get up with them in the early morning and open the door at the coop. [...]
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16:01
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Hack a Day
With fall approaching you might think about moving your gardening inside. [Jared] used cheap and readily available materials to make these salad-green trays. When used with his grow lights and tent (which he built during a different project) he was able go from seed to salad-bowl in just four weeks. A pair of plastic storage [...]
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15:36
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Hack a Day
Make your next project solar-powered with this charging circuit. It’s completely through-hole, and there are no microcontrollers that need to be flashed. If you can source parts and are handy with a soldering iron building this will be a breeze. Both the maximum system voltage and the low voltage drop out are configurable. After assembly, [...]
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14:53
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Hack a Day
[GrowColt] shows you how to modify a lamp timer for use with hydroponics. You can pick up this type of mechanical timer at most local big box stores for around $5. The timer plugs into an outlet, and the device you want to operate plugs into it. [GrowColt's] end goal is to make the timer [...]
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11:01
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Hack a Day
[Rumplestiltskin] has had work done on his double-hung windows to help prevent drafts and keep them in good working order. But there are still a few that rattle, and let in the cold of winter. Not this year; he’s added a small feature to the jamb that will keep out the cold weather. A pair [...]
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12:01
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Hack a Day
There’s been a lot of stories about arranging solar panels to mimic leaves on a tree, thereby boosting their efficiency. But before reading that story you might want to check out this blog post correcting some flaws in that breakthrough (page is down, here’s a cached version). Before we go any further, we’d like to point [...]
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9:32
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Hack a Day
Here’s a little eye candy for motorcycle enthusiasts everywhere. This is the newest iteration of [Julian's] electric motorcycle. He obviously knows what he’s doing because everything fits into the frame in a way that is still very pleasing to the eye. But this is actually slimmed down from the original design. If you take a [...]
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5:30
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Hack a Day
The sun is a great source of energy, however, efficiently collecting this energy can be hard to do. One thing that can improve the results of solar use is to actually track the sun’s movement. [fanman1981] hooked up his own homebrew solar tracker using some pretty clever techniques. For this hack he used two Harbor [...]
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12:01
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Hack a Day
Paul, as he describes himself, is “a student without a big budget,” which might have been part of the inspiration for this hack . Paul wanted to see how much time he was spending under the shower each day, so came up with this monitoring device using the ever-awesome Arduino processor and a RFID tag [...]
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9:01
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Hack a Day
Some animals seem to be able to detect earthquakes. Some animals also navigate using the earth’s magnetic field. From the idea that there may be some relationship with these two things, this experimental earthquake detector was born. [Bob Davis] built this device, which uses an Arduino and several Hall effect sensors to detect and record [...]
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10:00
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Hack a Day
The Protei project aims to develop a robotic solution for oil-spill cleanup. [Cesar Harada] quit what he calls his dream job at MIT to work toward a solution to the ecological disasters that are oil spills. He had previously been working on Seaswarm, a swarm of robots that use conveyor belts of absorbent material to leech oil [...]
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6:01
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Hack a Day
You can build a copy of this vertical wind turbine in a weekend and it won’t cost you all that much. Applied Sciences developed the hardware and they’re sharing all for the build details. You will be taken through every part of the build starting with the fin assembly which is made from stove-pipe material. [...]
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11:01
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Hack a Day
Here’s a way to brighten up enclosed spaces in an environmentally friendly way. The power of the sun is harnessed using a bottle full of water. Quite simply they’re used 2-liter soda bottles. They’ve been filled with water along with two caps worth of bleach to keep microorganisms out. The cap is then covered with [...]
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14:33
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Hack a Day
What can you do to make sure your system is running as efficiently as possible? Take a page out of [Mux's] book, who went to great lengths to measure and adjust his system for ultimate efficiency (translated). What he ended up with is 8.5 Watts of consumption at idle and about 50 Watts under load. [...]
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12:50
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Hack a Day
Keeping live plants in an aquarium happy can be quite a chore. One of the frequent rituals is adding fertilizer, which is called dosing. [Majstor76] came up with a creative way to automatically dose using an air freshener. He got rid of the canister that holds the scent and re-purposed a hand soap pump to move the [...]
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9:00
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Hack a Day
This rainbow is and is not natural. It’s the product of rainwater and sunlight so in that respect it’s natural. But as you can see, it’s not raining. This is an art installation that uses captured rainwater, stored solar electricity, and irrigation equipment to float a heavy blanket of mist in the air. The prismatic [...]
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12:00
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Hack a Day
Usually we don’t like to feature projects that have zero build details, saving them instead for a links post. But this steam-powered bicycle is too… peculiar to pass up. In between the rider’s legs is the firebox that contains a wood-fueled fire. Watch the clip after the break and you’ll find just how noisy this [...]
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6:00
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Hack a Day
[Ben Nelson] turned his electric Geo Metro into a plug-in hybrid. But wait, where’d he get an electric Geo Metro? It seems that we’re one hack behind [Ben], who converted the vehicle to all electric back in 2008 using a forklift motor and some batteries. This time around he’s following the Chevrolet Volt’s example by [...]
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8:00
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Hack a Day
What do you get when you combine two bikes, a couple levers, and a home made wooden shovel? Why, a light duty tricycle plow, of course! [Craig] of Firefly Workshop cobbled together this contraption to assist him in shoveling his 90′ driveway when a few inches fall. More convenient than a normal shovel, and much more environmentally [...]
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12:04
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Hack a Day
[Bill Porter] has joined in the pursuit of an inexpensive yet effective way to monitor his power usage. He calls his project the Not So Tiny Power Meter, and shared both his successes and follies involved in seeing it through to implementation. There are problems; sizing issues with enclosures and his PCB, issues with noise [...]
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8:00
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Hack a Day
The Global Village Construction Set is an open hardware initiative aimed at sharing tool-building knowledge. They believe that to build civilization you need forty basic tools, eight of which they’ve already prototyped and made available on their wiki. Included in these is a tractor which reminds us of a beefy bobcat. It has a soil pulverizing attachment [...]
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10:00
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Hack a Day
Did you know weighing bee hives was even necessary? Of course it is. Monitoring hive weight can tell a beekeeper a lot about the size of the swarm, their harvesting habits, and the yield they are producing. We had to cover this hack because it’s a fine piece of engineering. [Trearick] designed a bee hive [...]
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11:00
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Hack a Day
How much water do you use when showering, or washing your hands, or washing the dishes? Not how much does the average person use, but how much to you use? That’s what the team over at Teague Labs set out to find with this water usage feedback system. The sensor used is a Koolance flow meter [...]
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9:31
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Hack a Day
To userp the Green Lantern oath is a sacrilege. But calm your rage as you take in this Green Lantern battery and ring project. [Jon] built the power battery portion out of LEGO, but inside you’ll find an added bonus. An Arduino uses a set of LEDs and an RFID reader to bring the object [...]
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14:00
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Hack a Day
[The Cheap Vegetable Gardener] wanted to check in on his garden from the road so he wrote a control app for his WinPhone. The hardware work is already done; having been built and tested for quite some time. The implementation comes in two parts, both shown in the chart above. The grow box is behind [...]
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9:43
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Hack a Day
[Niklas Roy] wanted to create electricity from moving water so he came up with this hyrdopower generator. It is part of his grand scheme to rent out small personal fountains made from buckets. They need electricity to run so he hooked up the generator to the water jet of a public fountain. It should be [...]
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9:29
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Hack a Day
Dabbling in alternative heating technology, [Rob Steves] built a wood stove to dispose of his scrap wood while negating his home’s fire insurance at the same time. As the leftover bits from his wood projects started to stack up he wondered how he would dispose of them. Burning the bits for heat means he’s using every [...]
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10:00
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Hack a Day
[Dodgy] wrote in to talk about his power meter data harvesting programs. This uses the same hardware by CurrentCost as the hack we looked at over the weekend but [Dodgy's] implementation is different. It’s separated into two parts, the first is a webserver written in C that harvests the data and makes it available at [...]
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14:00
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Hack a Day
[Graham Auld] got his hands on an energy monitor for free from his utility company. The device seen in the insert provides a nice LCD display but he wanted a way to graph the data over time. There was an included cable and a method of using Google PowerMeter but only for Windows computers. He [...]
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10:00
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Hack a Day
[Doug] needed to update his watering system to comply with his city’s new water saving ordinance. The old system wasn’t capable of being programmed to water only on even or odd calendar days. Rather than purchase a replacement he decided to build his own sprinkler controller. It needed to switch 12V solenoids, a job that’s [...]
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6:00
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Hack a Day
Want to clean up the Gulf of Mexico oil spill in one month? Seaswarm says it can be done with 5000 floating robots. As the name implies, the project uses swarm robotics. Each unit draws power from the sun, and drags around a conveyor belt of oil absorbent nanofabric that doesn’t get wet in water. Once [...]
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10:00
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Hack a Day
[Paul] wanted to have access to renewable energy at his cabin. It’s a relaxing place, nestled in a tall forest that shelters him from the sun and wind. This also means that solar and wind energy aren’t an option. But there is a stream running through the property so he decided to build his own [...]
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13:03
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Hack a Day
[Mark Bog] thought it was a waste to use batteries for his desktop touch pad. Quite frankly we agree that if you can avoid using disposable cells you should. He ditched the dual AA batteries inside of his Magic Trackpad and built a battery-sized adapter to feed it some juice. It consists of a dowel [...]
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6:13
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Hack a Day
Students at the Rochester Institute of technology have put together this WiFi hotspot that is powered by a wind turbine and a solar panel. It gets its signal through a parabolic antenna pointed at a near by building and repeats it for use in the vicinity. They are using a 30W solar panel, along with [...]
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8:46
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Hack a Day
This long bike is built for haulin’. After needing to find a truck to transport his welding equipment (ironically in order to build another bike) [Nick Johnson] decided it was time to make a two-wheeled cargo transport. He extended the frame in order to add a cradle in the front. Eventually there will be sides [...]
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11:00
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Hack a Day
No hack will be more readily accepted by the significant other more than an automated vegetable watering system. [Jouni's] homemade rig keeps those tomatoes happy with just the right amount of moisture. A bucket serves as the reservoir, a submersible pump gets the water to the soil through a bit of plastic hose. An Arduino [...]
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11:27
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Hack a Day
[Derek Diedricksen] builds nomadic houses from left over building materials. Some are large enough to haul behind a vehicle or, in the case of the one above, small enough to tote around like a wheelbarrow. We love them because not only do they reuse material that might commonly hit the landfill, but they look good. [...]
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11:00
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Hack a Day
[Clayton Boyer] took the electricity out of the useless machine, making one that runs like a clock. To this point, we’ve always seen these useless machine use electric motors. [Clayton's] clever design uses a wind-up spring and a series of wooden gears to bring the fun, making it a great companion for the binary adder [...]
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11:39
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Hack a Day
Amidst the noise of a bazillion robots and Tesla coils at the 2010 Bay Area Maker Faire, we located a bubble of usable WiFi, and got a nearby power charge to boot. If nothing else here, we want this: The SolarPump Charging Station is a self-contained oasis of free power for laptops, cel phones and [...]
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7:28
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Hack a Day
Want nature to supply you with 130-150 degree hot water? [Onestraw] shows you how to get just that by building a compost heap that heats water. Finding himself the proud owner of a dump truck of green wood chips [Onestraw] went about building his own version of Jean Pain’s thermal compost pile. The idea is [...]
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12:15
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Hack a Day
We thought we were supposed to have fusion-power for our DeLorean by now but it perhaps urine-power is just around the corner instead. [Gerardine Botte] has been working on creating hydrogen from urine, the world’s most abundant waste product. The voltage needed to break apart the urea atoms is less than half that of water, [...]
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7:11
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Hack a Day
Challenged by hot days and steep turf [Grayson Sigler] modified his reel mower to use electric motors. The end product will be radio controlled but he lacked the necessary parts to make it wireless right now. Not to be deterred, he used a wired controller for prototyping and testing that should be easily replaced once [...]
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8:00
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Hack a Day
The Winduino II uses fins to pick up the movement of the wind and translate it into music. Each fin is attached to the main body using a piezo vibration sensor. The signals are processed by an Arduino housed inside and the resulting data makes its way to a computer via a Bluetooth connection to [...]
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11:00
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Hack a Day
[Dmritard96] built this automated watering system to keep his garden growing while he’s out-of-town. It uses rain barrels, which capture and store rainwater, as a source. These barrels provide very low water pressure so he’s added a battery-powered pump along with a solar array for recharging. Don’t worry, if the rain barrels run dry there’s [...]
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14:05
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Hack a Day
This bicycle add-on uses an electric motor to help you out. This way the motor takes advantage of the gearing normally available to the cyclist. What interests us most about the system is the DIY battery work they’re doing. The cells are using Lithium Iron Phosphate technology. The li-ion cells you’re used to seeing in [...]
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13:00
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Hack a Day
[Nanomonkey] spent the weekend building generators that run off of syngas. All Powers Lab produces Gasifier Experimenter Kits to convert raw material to energy. The kits use Gasification to make a “natural gas like” fuel from materials such as wood chips, walnut shells, construction debris or agricultural waste.
So is this the Mr. Fusion that powered [...]
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8:37
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Hack a Day
[Matthias] swapped out his twin-tube florescent aquarium lights for LEDs. By running tank water through the aluminum LED mounts he’s transferring excess heat into the water in the tank, in turn saving some of the electricity that would have been used to heat the tank. Couple this with roughly 35 Watts saved by moving away [...]
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13:00
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Hack a Day
This box will crush your cans and deposit them in the bin below. Branded the Cannihilator, [Jeff Walsh] built this with his two sons, [Jake] and [Ryan]. Early hacking eduction is important if they want their future projects to be regular Hackaday features.
The crushing power is provided by a solenoid pneumatic ram. As seen in [...]
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11:32
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Hack a Day
[Henry Herndon] converted a Mazda Miata to an all-electric vehicle. There’s a ton of great information in his archives, as well as a round-up video that we’ve embedded after the break. It’s interesting to see him implement two different types of Nalgene bottles as coolant reservoirs. The polycarbonate on the first shattered on him but [...]
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11:00
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Hack a Day
Tobacco and E coli can wreak havoc on your body causing serious damage if not death. Some researchers from the University of California at Berkley have found a way to take these potentially dangerous organisms and make them do our bidding. By genetically engineering a virus they have shown that the two can be used [...]
1337day (was: Inj3ct0r, 1337db)
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