Category: Technology

Green Wi-Fi

from green wifiGreen WiFi has a simple goal: provide people with stable and reliable internet access from a renewable resource for developing nations. Many readers probably know that this sounds easier than it is. The thing is, Green WiFi has a solution that looks like it will work easily.

I spoke with Marc Pomerleau, one of the founders of Green WiFi, and we had a very interesting conversation talking about both the Green and WiFi part of Green WiFI. Their approach to providing internet access is novel in that it is simple, low-cost, and can be quickly setup.

Essentially, they’ve designed a system that uses a solar panel, a charge controller, a battery, and a generic router to create nodes that cost around $200. This system is comprised of stand-alone units that can talk to each other over a mesh network that can also heal itself. The system was designed primarily by Bruce Balkie, the other founder of Green WIFI, and the prototype node tested on his roof without a complete power loss.

Bruce and Marc were working at Sun Microsystems when the idea to use their knowledge to make the world better came to mind. They had always wanted to do something “with meaning” and they figured out what to do.

The Approach

They were inspired by two projects, one was the OLPC, which “drew our attention,” according to Marc. The other project was Rwanda Telecom, which was recently purchased by Greg Wyler.

Greg noticed that, after buying the telecom, cheap and reliable power was the biggest hurdle to providing internet access. Similarly, the OLPC project has been criticized for forgetting that computers are the most useful when they are connected. These two problems got Brian and Marc thinking. If they could create a system that was self-powered and provided internet connectivity it help to solve Greg’s problem and the main criticism of the OLPC. It could help bridge the digital divide and empower new internet users.Bruce made sure that he did not take a “developed-world approach” to the problem by over-engineering it, or by just making the battery bigger and more expensive. Bruce took existing technology and used it to create a new technological tool. Of course, using stock parts helps them keep the cost of each node down.

The Nodes

There are a few things that makes Green WiFi so good. One is that the system is broken into nodes that communicate automatically with each other. All that is needed to setup a network is to have one node connected to a broadband access point then that node will self-discover other nodes and create a mesh network. Setting up the nodes is simple according to Marc, when asked if there is a user manual, he responded that if they make one it wouldn’t be longer than five pages.

Another element that allows for success of Green WiFi is that the solar panel provides enough power for the router by adjusting how much power the router can use. This allows for use in almost any situation including 27 consecutive cloudy days. When the sun is shinning the node is powering the router and charging the battery, with less sun the battery can be used. What’s more, the node can switch from open-access to closed-access to save power thanks to the charge controller.

The Use

The relative low cost of each node makes it a very strong contender for creating a common network. They are also designed to last a long time through all kinds of weather. Each node is a self-contained unit that requires no, or very little, maintenance with a life expectancy of 2-3 years.

One thing that telecentres can do is create a string of these nodes then split the broadband access thereby halving the cost of having a connection. Each telecentre can also choose who has access to their network.

Marc also acknowledges that these nodes can be used after a natural disaster. Since they self-discover each other it is easy to just drop them in an area, that way disaster crews (or whomever) will have internet access. Given the recent use of Google Earth to coordinate disaster rescue, the internet seems like a good thing to have.

Day-to-day application of the nodes is of course the element that is going to make or break Green WiFi. Marc has mentioned some creative ways to use the nodes, but my favourite way to use the nodes involves the ocean.

Seaweed, like most commodities, change in price frequently so it is key to sell at the right time. Seaweed farmers told Marc that they would love to have internet access on their boats so they can check commodities markets directly, instead of going through a middleman.

Marc has a lot of faith in people using the nodes in innovative and unexpected ways. He expects people to come up with ideas “now that they have the technology.” When I asked him what the future of Green WiFi he answered by telling me “we know something else is coming.”

The Future

Future development of Green WiFi will happen once they get they establish themselves a bit better. Green WiFi is still very young, Marc only started working full time on the project in June, but things are going very well. Despite having some trouble with finding a suitable venture capitalist, influential environmental organizations are looking into purchasing nodes for their work in remote areas.

In the immediate future, they will be pursuing ways to ensure their own sustainability and give presentation at conferences on their work, the next conference is the AirJaldi Summit this October In India, they are looking into expanding a trial run of their technology.

Marc and Bruce are “constantly getting ideas and solutions” for problems and new uses of their nodes. So one thing they know for sure about the future of Green WiFi is that the next step will be driven by demand from people on the ground. The whole process according to Marc is “very exciting and scary at the same time.”

Put Your Leftovers in Your Car

wow!It seems like that neat engine, which is powered by trash, in that car from Back to the Future is almost real! Researchers at UC Davis have found a way to turn leftovers from meals into biogas that can be used to generate electricity or make fuel. That in itself is not revolutionary, what is though, is that they found an effective (cheap) way to do this on a large scale.

The machine will use leftovers from restaurants to make energy, thus making it also a waster-diversion program to boot.

“The Biogas Energy Project is the first large-scale demonstration in the United States of a new technology developed in the past eight years by Ruihong Zhang, a UC Davis professor of biological and agricultural engineering. The technology, called an “anaerobic phased solids digester,” has been licensed from the university and adapted for commercial use by Onsite Power Systems Inc.”

Kite Power

Wind power is nothing new, but a power plant that can produce as much power as a nuclear reactor is. Imagine a spinning top that uses kites to rotate and that, in turn, generates an electrical current. Researches in Italy have done just that, they have created KiteGen.

“KiteGen’s core is set in motion by the twirl of the kites; the rotation activates large alternators producing current. A control system on autopilot optimizes the flight pattern to maximize the juice produced as it sails on night and day. A radar system can redirect kites within seconds in case of any interference: oncoming helicopters, for example. Or small planes or even single birds.

Research by Sequoia Automation, the small company near Turin heading the project, estimates that KiteGen could churn out one gigawatt of power at a cost of just 1.5 euros per megawatt hour. That’s nearly 30 times less than the average cost in Europe of 43 euros per megawatt hour.”

Cell Phones get Greener

Cell phones are a huge contributor to that problem of e-waste and the cell phone makers are aware of this. Now the phone makers are going to do a little something for the environment by checking what goes into their phones. The companies are looking into removing toxic chemicals and improving recycling and proper-disposal programs.

The consumer can curb the amount of energy that the cellphone uses. New cellphones will tell the user that the battery is charged and that the phone should be unplugged thereby conserving energy.

“If 10 percent of the world’s cell phone owners did this, the group’s final report said, it would reduce energy consumption by an amount equivalent to that used by 60,000 European homes per year.”

Dell Commits to Clean Up

ewaste

Ever wondered what happened to the old computers bits and mobile phones you threw out? Each year tons of discarded technology quietly disintegrates in landfills or gets melted down, releasing toxins and chemicals into the environment. After a two year campaign by Greenpeace, several companies have agreed to remove the chemical content of their hardware. These companies include the likes of HP, LGE, Nokia, Samsung, Sony and Sony Ericsson and now Dell has joined this list of environmentally conscious hardware providers.

By removing toxic chemicals, these companies make their hardware easier to recycle and take responsibility for the impact their products have on the environment.

A recent survey showed that most consumers would be prepared to pay more for computers that were chemical free and had no negative impact on the environment. Hopefully, the bigger names missing from the list will pay attention and endeavour to meet the needs of consumers by providing environmentally responsible hardware.