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USB RDS Coder Board using
ATmega32 - This board is a RDS coder using an ATMEL AVR
ATmega32. This board can be controled by a RS232 link, USB interface or SPI. TA data is displayed wiyth a LED and
can be controled by : - Hardware input - RS232 - USBsPI (not yet implemented) . . .
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. . .
USB switch - You can connect one USB device like a printer or scanner on 2 computers and controlled by
software. . .
USB
Tilt Sensor - NOTE: Must register on this site. . .
[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. . . .
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