Futurist

There are 391 posts filed in Futurist (this is page 34 of 40).

Make your own cell phone network

I just discovered a very cool open-source project that turns an ordinary laptop into a cellular tower. It uses Asterisk to route calls.

Very, very cool. Now I have to find out how it works!

OpenBTS is an open-source Unix application that uses the Universal Software Radio Peripheral (USRP) to present a GSM air interface ("Um") to standard GSM handset and uses the Asterisk® software PBX to connect calls. The combination of the ubiquitous GSM air interface with VoIP backhaul could form the basis of a new type of cellular network that could be deployed and operated at substantially lower cost than existing technologies in greenfields in the developing world.

via The OpenBTS Project.

Satellite fun, part two

Motor mount


After I had my satellite pole properly set, it was time to aim the dish. While I had little trouble finding a satellite earlier when I simply stuck the dish on the pole and fiddled a bit, I found it much more difficult to make things work when I added the mount motor. That’s because the motor adds its own angle to the mix, so you have two dials to set, not just one. When you couple that with an instruction manual often written with poor English it becomes an even greater challenge.

I mounted the motor to the pole, attached the dish to it, and began fiddling. And fiddling. And fiddling some more. I just couldn’t get the receiver to work. The motor needed to be pointed directly south and I worked a long time to get it correct. It didn’t help that I had my TV and receiver all the way inside while I worked. Though I had a “satellite beeper” device which makes a tone when it detects a satellite, I couldn’t get the receiver to do what I wanted.
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Satellite fun

Satellite dish


Longtime MT.Net readers will know that I’m a satellite geek. I bought a DVB-S card for my computer five years ago and enjoyed tuning in the few channels I could pull in on a tiny 18″ dish. That didn’t hold my interest, though, because … well, there wasn’t much to see.

For my latest birthday, I decided to get a little more serious into this hobby. I found a Craigslist ad from a local guy who was selling his satellite gear. For about $75, I bought three DVB receivers, a dish, and an LNB. I took the parts home, scratched my head, and wondered if I had the knowledge to put it all together into something that worked. It turns out I did!
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Woz TV

Why is it whenever I think up something cool to create, Steve Wozniak’s already beaten me to it?

This is from his open letter to the FCC defending Net Neutrality. Like me, Woz knows the value of open networks.

In the earliest days of satellite TV to homes, you would buy a receiver and pay a fee to get all the common cable channels. I had a large family (two adults, six kids) and felt like making every room a lot easier to wire for TV. Rather than place a satellite receiver in each room, I’d provide all the common channels on a normal cable, like cable companies do. In my garage, I set up three racks of satellite receivers. I paid for one receiver to access CNN. I paid for another to access TNT. I paid for others to access HBO and other such networks. I had about 30 or 40 channels done this way. I had modulators to put each of these channels onto standard cable TV channels on one cable, which was distributed throughout my home. I could buy any TV I liked and plug it in anywhere in the home and it immediately watch everything without having to install another satellite receiver in that room. I literally had my own cable TV ‘company’ in the garage, which I called Woz TV, except that I even kept signals in stereo, a quality step that virtually every cable company skipped.
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Google still looking to spread Google Fiber

It looks like all hope is not lost on Google Fiber coming to Raleigh (or Durham, or any of the other dozens of NC cities hoping to get it). Tanner points to this update from the announcement on Google’s blog:

Update 4:15PM: We’ve heard from some communities that they’re disappointed not to have been selected for our initial build. So just to reiterate what I’ve said many times in interviews: we’re so thrilled by the interest we’ve generated—today is the start, not the end the project. And over the coming months, we’ll be talking to other interested cities about the possibility of us bringing ultra high-speed broadband to their communities.

Perhaps there’s hope for high-speed Internet in North Carolina after all?

Google Fiber picks Kansas

I was sorry to hear that Google passed on North Carolina for its Google Fiber project. Kansas City, Kansas won out.

I hope it had nothing to do with the animosity our state’s current leadership has shown towards high-speed broadband, but you never know.

After a careful review, today we’re very happy to announce that we will build our ultra high-speed network in Kansas City, Kansas. We’ve signed a development agreement with the city, and we’ll be working closely with local organizations, businesses and universities to bring a next-generation web experience to the community.

via Official Google Blog.

Update 9:26 PM: All hope may not be lost for NC after all.

Artificial Leaf

Fascinating.

Speaking at the National Meeting of the American Chemical Society in California, MIT professor Daniel Nocera claims to have created an artificial leaf made from stable and inexpensive materials that mimics nature’s photosynthesis process.

The device is an advanced solar cell, no bigger than a typical playing card, which is left floating in a pool of water. Then, much like a natural leaf, it uses sunlight to split the water into its two core components, oxygen and hydrogen, which are stored in a fuel cell to be used when producing electricity.

With a single gallon of water, Nocera says, the chip could produce enough electricity to power a house in a developing country for an entire day. Provide every house on the planet with an artificial leaf and we could satisfy our 14-terrawatt need with just one gallon of water a day.

via Artificial Leaf Could Be More Efficient Than the Real Thing | Wired Science | Wired.com.

Broadband op-ed in News and Observer

The News and Observer ran my opinion piece on municipal broadband today:

Don’t block broadband
BY MARK TURNER
Published in: Other Views

RALEIGH While farm life has never been easy, at one time it was significantly harder. In the mid-1930s, over 97 percent of North Carolina farms had no electricity, many because private electric companies couldn’t make enough money from them to justify running the lines.

Aware of the transformational effect of electrification and recognizing the need to do something, visionary North Carolina leaders created rural electric cooperatives, beating passage of FDR’s Rural Electrification Act by one month. Through the state’s granting local communities the power to provide for their own needs where others would not, over 98 percent of farms had electricity by 1963, and our state has prospered.
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Ignoring the have-nots in a digital society

Want to use a computer? Take a number

We took the kids to the Cameron Village library last Sunday and loaded up on the kids’ books. As I usually do (being the curious sort) I took note of the crowd making use of the library’s computers. I always like to see what kind of folks are depending on the library’s computers. Like many of my visits there, I found a crowd at the computers. There wasn’t even a single workstation available.

As my kids were checking out their books, I listened as a mom and her 10-year-old son pleaded with the librarian to get a computer. I guessed that he had a school assignment he needed to complete.

“What if they’re not doing anything important – playing games or something?” the mom asked. “Could they give it up then?”

The librarian shook her head. “As long as they’ve got time left on their reservation, they can use it however they like. Now, if they get up and walk away, leaving it unattended, then you could step up and use it.”
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Could the Internet be shut down in US?

Wally Bowen of the Mountain Area Internet Network ponders whether the U.S. could be cut off from the Internet the way Egypt was.

After seeing what some anti-spam servers can do, I can say wholeheartedly that it can.

On National Public Radio last Saturday, host Scott Simon opined that a “central shutdown” of the Internet as occurred in Egypt was “unthinkable if not impossible” in the United States given the “thousands of Internet routes and providers” here.

Simon noted that Egypt’s four primary Internet service providers could be shut down “with just a few phone calls.” But the U.S. has only four companies — Comcast, Time-Warner, AT&T and Verizon — controlling most of our broadband access. More than 90 percent of U.S. broadband users have only one or two providers, a cable or telephone company, to choose from.

via Could the Internet be shut down in US? | citizen-times.com | Asheville Citizen-Times.