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21 Nov 2011

New DB9-USB connectors from FTDI enable to use a USB port in devices with UART interface without necessity of a PCB redesign.

By simple using of new DB9 USB connectors instead of original DB9 UART connectors, you can achieve virtually immediately a USB connectivity of your existing devices. If you from any reasons don´t wish to redesign a PCB, then these connectors are ideally suitable for you. Connectors DB9 USB contain a complete USB/UART converter circuit in their bode. So far these connectors were available in the RS232 logic levels version. Novelty from company FTDI are 4 new types supporting also 3.3V and 5V logic levels – DB9-USB-D3 and DB9-USB-D5, with a USB male or female connector.

DB9 USB family now contains 6 types for all 3 the most common logic levels, in a version with Male and Female USB connector. New connectors offer the same utilization comfort like other USB products from FTDI, DB9_USB datasheet and in the AN_149 application note. Free available drivers enable to use DB9 USB connectors as a Virtual COM Port (VCP).

Change UART to USB in an existing device! - [Link]

5 Nov 2011

Company Future Technology Devices International Limited (FTDI) extended support of its USB components even for connection to products with the Android operating system.

The first contribution is the release of the Application note AN_181 about accessing the „Android Open Accessory Mode“ with Vinculum-II chips. Open Accessory Mode is a new feature in of Android OS 3.1. whereby a USB host device can connect to the Android device to allow data transfer to and from the Android device over USB. FTDI chip VNC-II as a powerful 16 bit chip enables to add USB HOST capabilities to many devices thus enabling to use also this Android OS mode. AN181 document shows the access to the Open Accessory Mode on an example of a development board V2EVAL and the Motorola Xoom tablet combination. FTDI provides a full source code as well as precompiled ROM files.

The second contribution is the release of new D2XX drivers for FTxxxx chips usable for Android OS. D2XX API is common for all usual OS-es, namely Windows, Windows CE, Linux and Mac OS X. FTDI has now developed the port of D2XX drivers for Android OS including native JAVA interface code and a JAVA class. This enable an easy access to the driver from an Android application. FTDI releases these drivers as a beta-version and if necessary, you can contact the technical support at support1 [at] ftdichip.com. Detailed description is in the Technical note TN_134. Supplementary information about Adding FTDI Devices VCP Driver Support to Android is in the technical note TN_132.

Connect your USB applications to devices with Android OS! - [Link]

31 Aug 2011

The idea of this project is to control (switch off/on) two power sockets with a computer by using its USB port. I’ve chosen USB in first place because I wanted to experiment with the PIC18F4550 microchip’s microcontroller, and secondly because the power supplied by this port (500mA) is enough to activate a relay without any additional power supply.

USocket – USB controlled Socket with PIC18F4550 - [Link]

28 Aug 2011

www.adafruit.com writes:

This is an interesting native-USB hack. An atmel (1287?) with a microsd slot that ‘looks’ like an optical disk drive to allow booting. We think someone could probably hack this together using an our Atmega32u4 breakout board or Teensy, MicroSD breakout board, and a heavy dose of LUFA.

The Isostick – Optical drive in a usb stick - [Link]

16 Aug 2011

XBMC is a cross platform Media Center Application with 10-foot UI. In this project we develop USB port base controller for XBMC application. Main functionality of this controller unit is to provide remote control interface, LCD base player information panel and rotary encoder base controller for XBMC. With this given hardware design and software programs, user may be able to control XBMC without using standard input devices such as keyboard and mouse.

This device is design to work with XBMC Version 10.1 (codename Dharma) or newer versions. Older version of XBMC may not work this system because of the differences in its Web Control Interface. This system is design to work with XBMC – JSON RPC interface.

XBMC USB Controller - [Link]

13 Aug 2011

image via: www.techcrunch.com

The USB 3.0 Promoter Group has announced a revised power delivery spec that means significant changes in how consumers will be able to power up tablets, notebooks, and a range of other e-devices. The new spec, designed for backwards compatibility with USB 2.0 and support for USB 3.0, promises to deliver up to 100W of power. It’s that capability–of delivering as high as 100 watts of power—that carries the excitement. The jump from 5W 900mA to 100W 20A is expected to extend the use of USB as an instant connection once the spec is implemented. The USB 3.0 Promoter Group is populated by HP, Intel, Microsoft, Renesas Electronics, ST-Ericsson and Texas Instruments.

USB 100W spec will pump up power for juicing tablets, notebooks - [Link] + [PDF]

21 Jul 2011

Choosing USB Pin Voltages for iPhones and iPads @ Voltaic Systems [via]

We continually make minor tweaks to the USB output of our batteries to make sure we charge as many devices as possible. We pay particular attention to Apple products and now, with the introduction of the iPad, it has become slightly more complicated to have a one size fits all solution. This post tells you the Voltage on each pin of our USB batteries, which is hopefully useful if you’re trying to make your own USB charger. There are lots of different threads Apple charging, but we’re going to focus here on USB pin Voltages as this was the variable we were adjusting in this round of production.

Choosing USB Pin Voltages for iPhones and iPads - [Link]

29 Jun 2011

Oleg writes: [via]

What started as a quick re-factoring effort transformed to a major redevelopment, but finally all pieces fit together tightly and I am pleased to announce that initial release of USB Host Shield library ver.2.0 has been posted to github.

Some of the major improvements include the use of only 5 Arduino pins, 3.5x faster low-level transfers, and the ability to use USB Hub(s).

Make sure you stop by Circuts@Home to check out the full details like the current/future supported device classes and supported hardware versions .

USB Host Shield library Version 2.0 – [Link]

8 Jun 2011

viswesr writes: [via]

Cypress has a new USB 3.0 peripheral controller EZ-USB FX3 – CYUSB3014 with ARM926EJS core. It has an architecture which enables data transfers of 320 MBps from GPIF II (a 32bit Port) to USB 3.0 interface.This value includes protocol overheads. This is a promising device for Open Logic analyzers, DSOs and any data acquisition system based on USB 3.0 streaming interface. The associated promo video mentions about support of ARM GCC toolchain, ideal for Open Hardware project. With availability of PCIe USB 3.0 expansion cards costing just $22, we could easily use USB 3.0 devices.

The downside :

1) at present they are only sampling with FBGA footprint, might require 4 layer PCB :( . 2) Require costly USB VID 3)No price info is available

USB 3.0 peripheral controller EZ-USB FX – [Link]

6 Jun 2011

USB – RS232 converter, uses only Tx and Rx lines, with selectable 2400, 9600, or 38400bps. PCB projected to fit in old mobilephone cable, most of parts is surface-mounted. For more info see original autor Osamu Tamura site. Pcb’s, driver, and firmware is attached below.

Converter USB – RS232 – [Link]





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