USB Small Peripheral Board (aka PIC18F14K50 Board) -  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 Test Instrument Interface for PCs -  With this USB interface you can turn your desktop or laptop PC into a whole suite of test instruments - a 2-channel digital scope, spectrum analyser, AC DMM and frequency counter plus a 2-channel audio signal/function/arbitrary waveform generator.  interested? Read on.__ SiliconChip

USB Tilt Sensor -    NOTE: Must register on this site __ Designed by Published in Elecktor July/Aug, 2010

USB to RS232 Adapter with FT232 -  We employ two UART boards in the course, one which can be connected to the serial connector of the PC (UART-RS232) , and a second that can be connected to a USB port (UART-USB).  The former is used in the lab and is part of the standard take-home equipment.  The latter is part of the (limited!) number of take-home targets for students who are working on a Laptop without serial connector.  in both cases, communication is done with the UART module of the microcontroller.  in the case of the normal UART board, the MAX232 simply transforms the voltage levels to RS-232 standards (± 3-15V; in our case 12V, with LOW=+12V and HiGH=-12V).  in case of the UART-USB, the FT232BM transforms the UART protocol to the USB protocol.  This is transparent to the controller, which communicates over the normal TX and RX pins.  __ 

USB to RS232 Converter -  Why build my own USB to RS232 converter when there are adapters already available from many suppler? The Answer is simple: Neither the strand "USB to RS232 converter" actually worked *properly* with all the devices I tried.  But, They did not seem to support ALL the RS232 lines.  The USB to RS232 converter using the FT8U232AM and a Maxim-IC  MAX235 __ 

USB to RS232 Dongle -  With serial and parallel ports being phased out on new computers, hardware designers and hobbyists have no choice but to convert the USB port back to RS232 serial.  FTDI have a very nice chip that does just that, the FT232AM.  This chip converts USB to a standard high-speed serial port.  The bonus with FTDI is the drivers are already written for you.  All you have to do is design the hardware and download the serial USB drivers from FTDi's web site.  __ 

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 to Serial Interface -  USB to serial interface is based on the powerful FT232 chip from FTDi.  it enables very easy connection of the user's application to the PC via the USB port, without necessity of any deep knowledge about the complicated USB problems.  FT232 chip is capable to transfer data at speeds up to 1M Baud in RS232 mode and up to 3M Baud in the RS485 mode.  Schematic contains the on-board serial EEPROM (93LC46) for storing the iD data (ViD, PiD, serial number and description strings).  __ 

USB, FireWire, Automotive & Unregulated Wall Adapter to Regulated 5V -  The LTC3115-1 is a high voltage monolithic synchronous buck-boost DC/DC converter.  its wide 2.7V to 40V input and output voltage ranges make it well suited to a wide variety of automotive and industrial applications.  A proprietary low noise switching algorithm optimizes efficiency with input voltages that are above, below or even equal to the output voltage and ensures seamless transitions between operational modes__ Linear Technology/Analog Devices App Note, Dec 5th 2011

USB/TTL Serial Cable: Extension & Supplement -  Two years ago, I presented here the USB/TTL serial conversion cables from FTDI — wonderful communication and debugging tools.  The increasingly frequent use of ARM.  must register on this site __ Designed by Published in Elecktor July/Aug, 2010

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-bandwidth characteristics __ Circuit Design by Design Feature by Richard A Quinnell, Technical EDFtor

USB-Based Thermocouple Temperature Measurement System using ARM7  -  in the source code, an ADC sampling rate of 4 Hz is chosen.  When the ADC input PGA is configured for a gain of 32, the noise free code resolution of the ADuC7060/ADuC7061 is greater than 18 bits.  , Circuit Function and Benefits, The following features of the ADuC7060/ADuC7061 are used in this application:, Primary 24-bit Σ-Δ ADC with programmable gain amplifier (PGA) : The PGA is set for a gain of 32 in the software for this application.  ARM7TDMi® core: The powerful 16-/32-bit ARM7 core with integrated 32 kB flash and SRAM memory runs the user code that configures and controls the ADC, processes the ADC conversions from the RTD, and controls the communications over the UART/USB interface__ Analog Devices from the Lab

USB-Based, Thermocouple Temperature Measurement System using ARM Cortex-M3  -  in the source code, an ADC sampling rate of 4 Hz is chosen.  When the ADC input programmable gain amplifier (PGA) is configured for a gain of 32, the noise-free code resolution of the ADuCM360/ ADuCM361 is greater than 18 bits.  , Circuit Function and Benefits, The following features of the ADuCM360/ADuCM361 are used in this application: , A 24-bit Σ-Δ ADC with a PGA set for a gain of 32 in the software for the thermocouple and RTD__ Analog Devices from the Lab

USB-Controlled Power Switch -  Build this and automatically power up all your PC's peripherals when you start the computer.  it works via the PC's USB port.__ SiliconChip

USB-LCD with PIC MicroController & FT232 -  USB LCD/VFD Controller is a HD44870 based LCD/VFD controller via USB interface.  The control command is compatible with Matrix-Orbital's LCD module.  So, you can use any MO friendly software to control this baby.  Such as LCDCThe firmware are based on David Potter's Serial LCD/VFD Display, but I almost rewrite the entire code.  __ 

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.).  __ 

USB-Powered Lithium-Ion Battery Charger -  With a maximum power rating 5.25V/500 mA, the USB power bus is a great source for charging a single-cell Lithium-ion battery.  The circuit in Figure 1 shows how to build a USB-powered single-cell Li-ion battery charger using National Semiconductor s LM3622 Li-ion Battery Charger Controller.  __ 

USB-Powered PC Lamp -  This white LED lamp lets you use your PC or laptop at night without disturbing others’ sleep.  it produces a soft white light just enough to see the keyboard in darkness...__ Electronics Projects for You

USB-Sensing Mains Power Switch -  Do you have to manually switch your PC's peripherals on (and later off again) each time you boot your PC? if so, this project will make life a lot easier.  it monitors your PC's USB port and automatically turns all that other gear on and off as required.__ SiliconChip

Wireless Temperature & Humidity Sensor with USB -  this project is based on obdev's Remote Sensor example and their firmware-only USB implementation; the main change is the replacement of the analog sensors with a Sensirion SHT11 digital temperature and humidity sensor__ 

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