Secret Diagram

WASHINGTON — Chinese telecom giant ZTE announced plans Monday to sell a low-cost smartphone using the open source Firefox operating system in the United States and Britain.

ZTE said its Open Firefox OS phone will be sold through eBay in the US for $79.99 and 59.99 pounds in Britain.

The phone, unlocked to allow use on a variety of mobile networks, uses the open source Firefox operating platform from the nonprofit Mozilla Foundation, which is aiming to break the dominance of Google's Android and Apple's iOS.

"The global availability of the ZTE Open through eBay means that more consumers worldwide are now able, for the first time, to buy an affordable smartphone based entirely on open Web standards," the Chinese firm said in a statement.

"The ZTE Open is powered by Firefox OS, which frees developers, operators and consumers from the constraints of existing closed ecosystems by using the Web as the platform for all functionality and applications."

The statement said sales would begin "soon," without elaborating.

ZTE vice president Dai Wenhong said the company "is devoted to providing more options for customers globally and enabling them to live better lives via advanced technology.

The ZTE Open offers customers a smartphone experience at an incredible price point, making it ideal for cost conscious consumers or those looking to upgrade to a smartphone for the first time."

The phone offered for US and British consumers is orange in color, while a blue version has been on sale in Spain and Venezuela and a black version in Colombia.

In June, Taiwan's Hon Hai Precision said it aims to hire up to 3,000 new employees to develop devices and software for Mozilla's Firefox operating system.

Hon Hai, better known by its trade name Foxconn and a major supplier to Apple, plans to produce five devices running on Firefox.

The Firefox operating system uses applications on HTML5, a Web standard which operates across platforms, unlike those developed for specific systems such a Apple's iOS or Google Android.

The project was termed as Mighty Minty Boost as it was developed to function as iPod/iPhone charger with solar power. Aside from being small, it has a large battery capacity of 3.7V at 2000mAh and it accepts input power from 3.7V to 7V. As shown in the images below, it can become a compact USB power supply when the solar cell is removed after charging. The Velcro is used to secure the Mighty Minty Boost inside a backpack or messenger bag after unplugging the solar cell.

For faster charging, a larger solar cell can be attached to the bag. Enough power can be generated to fully charge an iPhone in about 5.5 hours and an iPod Touch in 4 hours using a slightly larger solar cell with 6V at 250mAh. The charger will automatically switch to trickle charging when the cell reaches full charge. The charging current is limited to 100mA when charging using the mini USB port and the charging is limited to 280mA when charging using the barrel plug jack


.
The materials needed to build the charger include a small solar cell, Lithium Polymer battery charger, minty boost kit, adhesive backed Velcro, Altoids tin, connector/wire, and small double adhesive squares as shown in the images below. An input power that ranges from 3.7V to 7V maximum can be accepted by the single cell Lithium Polymer. In bright sunlight, the solar cell maxes out at approximately 5V at 100mA. A larger solar cell with 6V at 250mA can be used for faster charging.



The images below show the assembly of minty boost kit where a JST connector is soldered to the minty boost PCB instead of connecting the battery holder in the kit. The minty boost circuit is allowed to connect to the Lithium Polymer battery charger circuit with this tiny connector. The minty boost is tested by connecting the battery pack and the charger circuit, the Lithium Polymer battery connects to the connector marked GND on the charger board and the minty boost connects to the connector marked SYS.



To fit the charger, a notch is cut out of the other side of the Altoids tin and used double sided adhesive to secure the charging circuit to the bottom of the Altoids as shown below. The bottom of either one of the circuit boards should not touch the bottom of the Altoids tin while reconnecting the minty boost PCB and the battery to the charging circuit.



Connecting or adding the solar cell can be done in different ways. Shortening the connector leads and plugging the barrel plug into the barrel jack on the charging circuit is one way. The other method is using another JST connector to replace the connector and plugging it into the third connector marked 5V on the charging circuit. Since there is no bog barrel plug sticking out of the side of the tin, using the second method is cleaner.

As shown in the photos below, some 2” Velcro was used to attach the solar cell to the top of the Altoids. To help protect the battery, a layer of clear packing tape was used for wrapping. N top of the two circuit boards, the battery pack is then set down. A red LED on the charger board will light up when the Mighty Minty Boost is set out in the bright sun. The iPod/iPhone/USB powered device can be connected once it is fully charged.