usb News - Page 30 of 31 - CNX Software

May 27, 2014 by Jean-Luc Aufranc (CNXSoft) - 2 Comments

iFans EL-PB-17 is a 3-in-1 USB Wall Charger with a Battery and an SD Card Slot

I’ve noticed TYLT ENERGY 2K a USB wall charger with an internal 2,300 mAh battery, is currently on Kickstarter for $20, and received some press coverage. The main advantages of this system is that it saves space ,and you don’t need to remember charging your phone and your USB power bank separately, it will just charge both within 3 to 4 hours. However, since I’ve recently purchased a USB solar power bank with a 30,000 mAh battery (actual 8,000 to 10,000 mAh) for about $25, I thought there must be better options with a larger batter and similar price, or cheaper price with a similar battery size. It turns out there aren’t so many options, but I did find NewTrent Travelpak Plus with a 7,000 mAH battery that sells for about $40 on Amazon and even $19 on Ebay. But I’ve found a product even more original and versatile with […]

March 25, 2014March 25, 2014 by Jean-Luc Aufranc (CNXSoft) - 11 Comments

USB 3.0 Connectors and Receptacles Explained

The other day, I opened one of the products I received for review, and I found a blue connector on the board with no description. USB 3.0 connectors are blue this connection seemed “funny” with two internal connectors, and I though it must have been something else, and asked on Google+. It turned out this is a USB 3.0 Standard-B receptacle. As my knowledge about USB 3.0 connectors was obviously lacking, I’ve decided to investigate and have a look at the different existing and upcoming USB 3.0 connectors that we should find in different types of devices and computers now or very soon. Standard-A USB 3.0 connectors and receptacles This is the easy one, it looks very similar to the USB 2.0 connectors, except it’s blue and adds 5 pins for USB 3.0 connectivity. It’s backward compatible with USB 2.0, and the receptacle is used for hosts. Most people must have […]

March 21, 2014 by Jean-Luc Aufranc (CNXSoft) - 2 Comments

USB2Go ARM Cortex M3 Development Board for Android Smartphones (Crowdfunding)

Many MCU based development boards such as Arduino or mbed platform connect to a computer via USB for power and programming, at least during the development stage. USB2Go, however, is designed with a micro USB port to connect directly to your Android smartphone, although it can also be used for standalone project, and an Arduino compatible baseboard is also available. This board powered by an STM32 ARM Cortex M3 MCU is however mainly destined to interface hardware such as LED, servos, sensors to your smartphone via micro USB providing both power and a communication channel with your Android device. USB2Go hardware specifications: MCU – STMicro STM32 ARM Cortex M3 MCU @ 72 MHz with 128 KB Flash, 64 KB SRAM USB – Micro USB for power and programming Headers – 2x 12 pin headers giving access to GPIO, ADC, PWM, UART, I2C, SPI… Debugging I/F – JTAG 20-pin to SWD […]

February 21, 2014 by Jean-Luc Aufranc (CNXSoft) - 25 Comments

USB Solar Power Bank Review

A few months ago, I won a $5 coupon for DealExtreme, and decided to buy a “Portable 5V (30,000mAh) Li-ion Battery Solar Power Bank w/ Dual USB + LED – Black + White” for just over $20. For the price, solar charging was a nice bonus, and the 30,000 mAh was probably a “mistake” but it did not really matter. The SKU is gone, but 1BA-2 Solar power bank ($23.97) appears to be a very similar product. I did not plan to write about this gadget, but a few things happened that made me change my mind. First. it took over two months to reach me, instead of the usual 2 to 4 weeks. I ordered on the 9th of November 2013, and received the package on the 25th of January 2014. The reason being that the package got declined by Thai immigration (I live in Thailand). DealExtreme could not […]

February 11, 2014 by Jean-Luc Aufranc (CNXSoft) - 10 Comments

Keepod Unite Aims to Bring Computer Access to Africa with $7 USB Sticks and Refurbished Laptops (Crowdfunding)

The Raspberry Pi foundation has done a great job to bring to market $25 and $35 computers for kids to learn programming, but they have many other uses including hardware “hacking” and bringing low cost computers to developing countries. Keepod and NGO LiveInSlums have thought of an apparently more cost effective way to bring computing access to people living in slums in Nairobi, Kenya, by providing USB sticks (about $7) to boot refurbished laptops. This is absolutely NOT a $7 PC as a few other websites have mentioned. The goal is to facilitate NGO communication, the spread of knowledge and economic development in a way that’s personal and secure. The USB flash drives will belong to one person, and contains a Linux based operating systems with all files saved in the stick, and no modifications on the host computer which does not even need an hard drive to work, and […]

January 29, 2014January 29, 2014 by Jean-Luc Aufranc (CNXSoft) - 9 Comments

RYVAL Elf Could Be the World’s Smallest USB Flash Drive

Hexino, a French company selling “fashion technology” under the brand RYVAL, may be offering the smallest USB flash drives available today with RYVAL Elf. This tiny mass storage device measure 1.8 cm x 1.8 cm x 0.68 cm, weights only 2 grams, and is available with capacities of 8GB, 16GB, or 32GB. The specifications listed on the company’s website are as follows: USB 2.0 compatible with Windows Vista, 7 and 8 Write speed – Up to 4 MB/s Read speed – Up to 12 MB/s Weight – 2 grams Dimensions – 18 mm x 18 mm x 6.8 mm Capacity – 8 GB to 32 GB Colors – Blue, Pink, and Green Material – Aluminium They only mention compatibility with Windows, but I don’t see why it could not work with Mac, Android, and Linux based devices and computers. It’s small enough to replace microSD cards for permanent storage expansion, […]

January 9, 2014 by Jean-Luc Aufranc (CNXSoft) - 2 Comments

100W USB Power Delivery Solutions Coming Later This Year

Beside 5Gbps, USB 3.0 specifications promised the capability to deliver 100 Watt (20V, 5A) of power to charge laptops, monitors, and other relatively power hungry devices directly via USB. The USB IF is currently showcasing a prototype based on DisplayLink docking station capable of both charging a laptop and connecting to a display via the same USB “power delivery” cable, and is expecting retail products to become available by the end of the year. 100 Watt are only achievable for a full USB port, although micro USB power delivery is also possible but at lower power. The dock combines ROHM BD-92101 USB power delivery chipset with USB Graphics and docking chipset solutions from DisplayLink according to that press release. The main advantage of this system is that you don’t need to carry your power adapter without, you’ll just need to bring your laptop, and plug it into a compatible USB […]

December 28, 2013 by Jean-Luc Aufranc (CNXSoft) - 17 Comments

$5.40 CHARGER Doctor Makes USB Power Measurements Easy

One way to make power measurement for USB powered devices is to make your own USB cable to allow for current measurement via a multimeter, but if you think it’s just too much hassle, I’ve found and purchased a small test device called CHARGER Doctor that shows voltage and current on a 4 digit display, and sells for $5.40 on DealExtreme. The device features a USB female out port, and a USB male input port, that you can place between your USB power adapter, and the cable to your device to alternatively display voltage (4 seconds) and current (9 seconds). It can be used for power consumption measurements, to test if your charger is working normally, or finding out the power adapter that will charge your phone the fastest. It’s said to support measurement between 3.5 to 7V and 0 to 3 A, with an accuracy of +/- 1%. I’ve […]