DIY Cellphone: Saan kaya makakabili ng mga parts?

Blogger's Note: We always say it was just a matter of time when someone can build his own cellphone. Now, it happened. Read on... 8-)

Build-it-yourself cell phones
By John Borland
http://news.com.com/Build-it-yourself+cell+phones/2100-1008_3-5953682.html
Story last modified Tue Nov 15 12:09:00 PST 2005

Surj Patel is building his own cell phone, bit by soldered bit.

It's not easy. It starts with parts that cost around $400. Then Patel and his partner, Deva Seetharam, have to write code to run on the tiny Linux-based computer that he's hoping will serve as the brains of his new phone.

So why bother? After all, it's not like cell phones are hard to find or terribly expensive.
Patel says he has lost patience with even the slimmest Motorolas and most advanced Nokias. He has been trying to build new features for cell phones for years, and he--like a growing number of other impatient developers--has concluded that phones have to be as flexible as ordinary computers if he's going to make progress.

"I want the phone to be much more open," Patel said. "The world's best research and development lab is all the hackers out there. Enable them, and they'll do it."

Thirty years ago, this could have been Apple Computer co-founder Steve Wozniak or any of his peers in their garages, building "homebrewed" computers without any inkling of the impending PC explosion. But the mobile world is in a way the inverse of that curve: Cell phone use has already exploded all over the world, but it is only recently that falling component prices have made it practical for homebrew phone hackers to build their own.

Certainly, the phone tinkerers are chafing at the boundaries set by the handset makers and the big phone carriers. They want phones to be programmable, so they can create their own services, either as start-up companies or just for their own use.

"The world's best research and development lab is all the hackers out there. Enable them, and they'll do it."
--Surj Patel, "homebrewed phone hacker"

This is already happening rapidly outside the realm of the hardware itself. Tech-savvy activists are turning phones into political tools. Programmers have built gateways between cell phones and the Skype Internet calling network, allowing inexpensive international calls on mobile phones.

Patel, who studied at the Massachusetts Institute of Technology's Media Lab for several years before moving to U.K.-based carrier Orange, and ultimately to his own start-up, on Monday talked with CNET News.com about melding social applications like LinkedIn or MySpace with a phone's address book.

That type of service, which connects sprawling lists of people into overlapping groups of "friends," and allows visitors to see who is online or active, would be a much better model for a cell phone's lists of contacts, he said. But today's cell phones are virtually impossible to tweak in that way.

Casey Halverson, a Seattle-based mobile developer who is also working on homemade phone projects, has similar complaints. Commercial cell phones don't let developers write at a basic level that talks directly to the hardware, which makes some programming tasks impossible or hugely inefficient, he said.

"I think as more people move to mobile devices, they will be running into more and more limits with closed systems," Halverson said. "For now, this kind of project is limited to tinkerers, but in the future there might be some kind of open platform for people to do these kinds of things."

Challenge to carriers' power?
None of this is likely to become mainstream soon. In a market increasingly filled with cheap phones that take pictures, play music and show television reruns, a make-your-own kit isn't likely to turn many heads outside the Radio Shack crowd.

But innovations that happen at the technological fringe have a way of filtering into the mainstream over time. The first Apple computer created by Wozniak and Steve Jobs set the foundation for a desktop computer revolution. The wonky dial-up bulletin board systems of the 1980s evolved into today's near-universal Internet access. Peer-to-peer programs developed in dorm rooms transformed the biggest media companies in the world.

"I think as more people move to mobile devices, they will be running into more and more limits with closed systems."
--Casey Halverson, mobile developer

A generation of cell phones that are as open and programmable as computers could be unpopular with cell phone companies, which have relied on control of their networks and the associated phones to keep people paying subscription fees. The music industry likes the idea of selling songs over phones, for example, in part because the tight control of networks makes piracy more difficult.

For the most part, this hardware-hacker activity hasn't yet come to the attention of the big carriers. A spokesman for Cingular Wireless stressed that any cell phone radio has to be approved by the Federal Communications Commission and the carrier itself before using the network, but said that the company supported experimentation.

"We do encourage competition and innovation in the marketplace," Cingular spokesman Clay Owen said. "It's great for people to experiment, given the right regulatory approvals."

Today, the phone hackers are largely in the prototype stage, keeping track of their progress and looking for ideas from the community on their blogs. Most aren't starting entirely from scratch. To comply with regulatory requirements, the projects have to find radio components that have already been approved by the FCC.

In this vein, tinkerers have found several companies that sell components originally meant for embedded systems such as surveillance cameras or GPS (Global Positioning System) receivers, which are allowed to transmit on the big cell phone networks.

Small screens and keypads are relatively easy to come by. The recent emergence of tiny Linux-based computer systems, each about the size of a pack of gum, have given them the brains for the phones. Cheaper "microcontrollers" are also available, which are simpler to install, but provide far less flexibility for applications.

Once all of those parts are connected, a homebrew phone needs a Subscriber Identification Module, or SIM, card, the little chip that stores information about which carrier network to use, what the phone's number is, and other personal data. These can be taken out of any GSM (Global System for Mobile Communications)-based phone, or can be purchased on a prepaid basis.

Cingular Wireless and T-Mobile phones both use the GSM wireless standard in the United States. Other carriers use a different technology, which makes it harder for the tinkerers to adapt their equipment.

The early phone tinkerers are hoping that their work sparks a broader response in the open-source community. Once a few people show a way forward in hardware, interesting things can be done by other software developers, they say.

Patel is helping organize an Emerging Telephony Conference with tech publisher O'Reilly Media in January, where he hopes to show off as many grassroots development projects as he can find.

"I have very selfish goals," Patel said. "I want to create demos and prototypes to show clients, and I can't demonstrate the future to you if I can't actually access it. But it's very clear that it's the hacker kids that are doing all the cool stuff."

Copyright ©1995-2005 CNET Networks, Inc. All rights reserved.


A movie projector in a cell phone?
By Michael Kanellos
http://news.com.com/A+movie+projector+in+a+cell+phone/2100-11398_3-5951372.html Story last modified Tue Nov 15 12:00:00 PST 2005

A few years from now, you might be able to carry a home theater system in your pocket.

Finland's Upstream Engineering is working on an LED (light-emitting diode) projection system that potentially could, because of its small size and relatively low cost, allow manufacturers to put projectors inside MP3 players, cell phones or other portable electronics for a few dollars.

Instead of passing around a phone to show off a video or a picture, the image (or video) could be blasted onto a wall. The picture brightness won't be as high as that of standard projectors, but it would let pictures on phones and music players escape the confines of the small screens on those devices.

The current prototype projector optical engine created by the company is about the size of a matchbox. An accompanying projector would be about the size of a cell phone. Currently, some companies make small projectors, but they are larger, about the size of a mini digital-video recorder.

News.context
What's new: A company in Finland is developing an ultra-compact image projector that uses an LED technology called "photon vacuum" to project pictures with relatively high efficiency.
Bottom line: Once ready for market, the projector could be sold as an accessory for MP3 players, cell phones and other portable electronics devices.

The reduction in size comes from a technique invented by Upstream for channeling the light from LEDs to a display in thousands of small beams. Light, whether from a candle or an LED, naturally shines in every direction. Upstream has built a complex micro-optical system that collects that light close to the source and sends a huge proportion of it to an intended target. The so-called "photon vacuum" optical system surrounds the LED like a shell.

As a result, a tiny optical package can provide roughly the same level of illumination efficiency that larger systems can.

"The idea is to collect every single ray and direct it to the display itself," said Mikko Alasaarela, president and founder of Upstream. "We've been approached by about 150 companies" from many industries.

Some start-ups in Silicon Valley are also working on technology for focusing LED light, said Dave Epstein, a partner at venture firm Crosslink Capital.

These days, everyone loves LEDs. Researchers in Japan hope to use the lights to wirelessly transmit data between automobiles while TV and display makers are putting them in more products. Not only do they consume little power, LEDs last for years and don't contain mercury, a toxic element used in small quantities in some electronic devices.

LED projectors also have the potential to be cheap because Upstream's ornate optical system won't be assembled out of many parts. The optical shell will be stamped out of plastic on injection-mold production lines. The basic Photon Vacuum system, which consists of an LED with the integrated optical system, can likely sell for under $10 in high volumes.

Upstream's intellectual property revolves around the optical engine. It doesn't make the LED itself, but obtains these from manufacturers such as Lumileds, currently owned by Philips.
Prototypes are being manufactured by contractors in Europe and Asia.

Mitsubishi and a few other Japanese companies have started to sell LED-powered projectors, but they cost several hundred dollars and function strictly as projectors.

Upstream is something of a family affair. Alasaarela was working at Nokia back in the '90s when he heard executives tout how phones might someday contain projectors. He left the company to found an enterprise software company.

During this time, he ran into a cousin who has become one of Finland's premier optical scientists. They hadn't seen each other for years, but Alasaarela began to pitch him on the idea of small projectors.

"I hadn't seen him since we were teenagers," Alasaarela recalled. "'It can't be done,' he said, but I insisted."

Despite many obstacles, the two continued to pursue the idea until, at one point, his cousin
realized that, although it is not possible to reach perfect light-power performance in a small space, a device could be developed that would come close.

Currently, Upstream illumination performance is not yet good enough for a commercial launch, but the company believes the technology could approach 70 percent to 80 percent illumination efficiency. If the company can get to around 60 percent, cell phone makers will become interested, Alasaarela said.

Problems, though, remain. Although the company has ironed out many of the basic issues with design and manufacturing of the lighting system, research still needs to be performed on perfecting the quality and performance. One major issue that needs to be tackled is the mold that stamps out the polycarbonate shell. The pattern on the mold is created with lithography, the same technique used for making chips.

"The master mold is not quite satisfactory," Alasaarela said, but added that the company hopes to have a commercial quality engine ready in 2006.
Copyright ©1995-2005 CNET Networks, Inc. All rights reserved.