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Universal Serial Bus Power Management - Application Note. . . [Micrel]
Universal UART PC-AT
Adapter [AN-692] - App Note Dated05-Aug-1995. . .
[National Semiconductor]
USB & GLCD expansion board for
8051SBC - Simple circuit for USB and 128x64 GLDC
interface. . . . [Wichit Sirichote, designer]
USB 2.0 temperature sensor needs only a handful of parts - 05/24/07 EDN Design Idea A USB-to-serial converter forms the heart of an accurate USB
temperature sensor. . . [by Silvio Lauckner, Ismaning, Germany]
USB digital I/O extender using a PIC18F14K50 - . . . [designed by Peter Jakab]
USB Digital Thermometer - I connected a DS1620 digital thermo-censor by Dallas Semiconductor to the Morphy Planning's
USB-IO to build a PC-accessible digital thermometer. The DS1620 chip supports 3-wire (SPI) protocol and allows
loose timing, so you can easily build a thermometer with it. It provides ¬0. 5 centigrade accuracy, which should
be sufficient for room temperature. . . [by IQ Technologies Industry, unless otherwise noted online]
USB Firmware Library Errata -
Application Note Published 18-Aug-05. . . [Microchip]
USB
Flash Drive - STMicroelectronics-Application. . .
USB I/O interface board for PC - . . .
USB interface for parallel
LCDs - Adding a cheap LCD to your PC is a popular diy
project for many beginners in electronics. The parallel port however, is dead. It's obsolete. It's big. ugly and
just awful. The solution? Add a USB interface to your existing LCDs. The circuit. . .
USB link neatly measures temperature - 10/26/00 EDN Design Idea Figure 1 shows a convenient and neat way to measure temperature
using the USB of a PC. An ADM1023 IC senses the temperature, and an Anchor Chips EZ-USB. PDF contains several
circuits, scroll to find this one. . . . [by Mary Burke, Analog Devices, Limerick, Ireland]
USB Mass Storage Deviceusing a PIC MCU - Application Note Published 30-Aug-05. . . [Microchip]
USB Outlet - The kitchen worktop is the ideal place for placing the mobile devices for charging during
the night. But we were tired of having to use three different chargers, using three AC outlets, and moving them
from the drawer to the wall everyday. I found multi-port USB chargers but I thought, why not having a direct USB
outlet ?. . . [Roberto Barrios EB4EQA]
USB Powered AA Nimh & NiCd Battery
Charger - The charger in this project is designed to
charge two AA NiMH or NiCd cells of any capacity (as long as they are the same) at about 470mA. It will charge
700mAh NiCds in about 1. 5 hours, 1500mAh NiMHs. . . . [Stefan Vorketter]
USB
Printer Sharing Switch - I had two computers, a Mac Mini
and a generic Windows computer. Both were on different networks, but in the same room, and I wanted to share a
Lexmark USB laser printer between the two of them. I ended up making this switch to share the printer between the
two computers. . . [From Dick Cappels' project pages]
USB Self-Powered Soundcard
- High fidelity external USB Soundcard / USB Headphones project
that can be built for your PC or Mac. It is based on the latest PCM2706 IC which functions as a high quality,
crystal clear 16-BIT Stereo DAC. It is a single chip digital-to-analog converter that offers two D/A output
stereo channels, digital S/PDIF output and requires very few external components. PCM2706 includes integrated USB
1. 0 & USB 2. 0 compliant interface controller and it is conveniently powered directly from USB connection.
PCM2706 is a USB plug-and-play device and does not require any driver installation under Windows XP and Mac OSX.
. . .
USB Small Peripheral Board
(aka PIC18F14K50 Board) - Recently I’ve working with the
little but smart PIC18F14K50 (or your low voltage version, PIC18LF14K50 ). These chips are cheap (about $2, 5 at
Mouser) and have low pin count, but very impressive specs: USB V2. 0 (low and high speed) ; NanoWatt. . .
USB Sound Card
with PCM2702 - Make a sound card is no more a complex
issue. If you use great IC PCM2702 from BURR BROWN / Texas Instruments you can create a fully functional USB
sound card. This sound card can be powered from USB port and has one stereo output. You don’t need to install any
driver for Windows XP and Vista, because they are already inside. This is really plug and play. . . .
USB Sound Card with PCM2702 - . . . [by IQ Technologies Industry, unless otherwise noted online]
USB to parallel port converter using Cypress CY7C68013A-56PVXC - . . .
USB to RS-232 Dongle - . . .
USB to Serial Adapter RS-232 - USB to Serial Adapter RS-232 Serial Port to USB The USB to Serial adapter (converter) lets
you use a serial PDA, GPS, cell, etc. with a standard USB port. This adapter is the easiest way to add a serial
port to your computer. Many PDAs, digital cameras, GPS units, barcode scanners, and other equipment require a
serial connection, and many newer computers don't have serial ports. . . .
USB: a Neat Package with a FeW Loose Ends - 10/24/96 EDN Design Feature The USB for PCs can automatically configure and power
peripherals. But, as I learned in this hands-on project, early USB adopters may face a substantial system-level
design effort. They also need to carefully examine USB data-. . . [by Richard A Quinnell, Technical EDFtor]
USB-AVR 323 Board - schematic for an ATMega323 boards The main interface to this board is USB via the FTDI
USB-Serial converter chip (8/05) . . .
USBn9603/4-Increased Data Transfer Rate using
Ping-Pong Buffering - Application Note. . . [National
Semiconductor]
USB-PC 8-Ch Power Switch - PowerSwitch provides 8 bits of parallel output intended to switch e. g. the power supply to
electronic devices. The PowerSwitch firmware is accompanied by a command line tool for Unix to control the
device. (The command line tool can also be compiled on Windows using minGW and libusb-win32. ). . . .
Use a microcontroller to design a boost converter - 03/04/04 EDN Design Idea Boost converters, like other switchers, have traditionally
received their control signals from a dedicated circuit. However, a recent trend is to integrate simple
switching-power-supply building blocks into generic devices, such as . . . [by Ross Fosler, Microchip
Technology, Chandler, AZ]
Use a PC 's printer Port to measure frequency - 10/26/95 EDN Design Idea You can plug the circuit in Fig 1 into a PC's printer port to
measure frequency. The circuit needs no external power supply, measures frequencies from 1 Hz to 5 MHz, and
displays the results on screen. IC1 (CD4536) is a 16- or 24-. . . [by Yongping Xia, EBT Inc, Torrance, CA]
Use a PC's parallel port to program a clock source - 12/07/04 EDN Design Idea This Design Idea shows how you can use Linear Technology's
LTC6903 programmable oscillator as a clock source for direct-digital synthesis, data conversion,
switched-capacitor filtering, clock, and voltage-controlled oscillator c. . . [by William Grill, Honeywell BRGA,
Lenexa, KS]
Use a PIC for automatic baud-rate detection - 08/22/02 EDN Design Idea Automatic baud-rate detection is desirable in many applications.
Microchip's (www. microchip. com] standard USART module that the company embeds in most of its PIC
microcontrollers lends itself to a simple and easily implemented autom. . . [by Ross Fosler, Microchip
Technology, Chandler, AZ]
Use a Printer Port to
Record Digital Waveforms - 06/18/98 EDN Design Idea
(File includes several circuits - scroll to find this one)To record or capture special waveforms, those that
appear once or have no fixed frequency, the usual technique is to use a logic analyzer or a storage oscilloscope.
However, these tools are very expensive. Moreover, because of limited memory, a storage scope can record fewer
than 1000 samples. The technique presented here provides an alternative method to recording digital waveforms.
The idea is to use the PC's printer port to sample waveforms, and the PC's memory to store data. . . . [by Dean
Shen, Dycam Inc, Chatsworth, CA]
Use a system's real-time clock to hide a code sequence - 10/27/05 EDN Design Idea Keep key code sections protected from prying users. . . [by
Mihaela Costin, Delmhorst Instruments, Towaco, NJ]
Use power line for baud-rate generation - 08/16/01 EDN Design Idea One cost-saving measure associated with 8-bit embedded
microcontrollers is to use a resistor-capacitor oscillator. These RC oscillators are inexpensive, but the
trade-off is low stability with temperature and voltage. In many appli. . . [by Joseph Julicher, Microchip
Technology Inc, Chandler, AZ]
Use
time-domain analysis of Zobel network - 06/27/02 EDN
Design Idea A Zobel network is useful in making a reactive load appear as a pure resistance to a driving source
prone to stability problems (Reference 1]. A typical situation is an audio power amplifier driving a loudspeaker,
modeled at first a. . . [by Noël Boutin, Université de Sherbrooke, PQ, Canada]
Use two picogate devices for bidirectional level-shifting - 11-Nov-04 EDN Design Idea In new mixed-voltage systems, it is often necessary to
level-shift a control signal from a high level to a low level. An open-drain device, such as the 74LVC1G07,
easily performs this shift. However, when a bidirectional signal req. . . [by Bob Marshall, Philips
Semiconductors]
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