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Parallel Port Controller - Control Appliances Through a Computer. . .
Parallel Port
Controller Using MATLAB - This project demonstrates the
programming of PC's parallel port using Matlab and implementing the same to control a stepper motor and LEDs from
the parallel port. . . . [© EFY Enterprises Pvt. Ltd. All rights reserved.]
Parallel port controls arbitrary-waveform generator - 06/13/02 EDN Design Idea You can use the parallel port of your PC and a few additional
components to generate a powerful, easy-to-use arbitrary-waveform generator. By using a Visual Basic program with
the circuit in Figure 1, you can generate any waveform (. . . [by Art Kay, Texas Instruments Inc, Tucson, AZ]
Parallel Port Interfacing Made
Easy - PC parallel port was never designed to provide any
output power to divices connected to it. it was only designed for connecting printer to your PC. But in this
weird PC business everything changes. Suddenly the parallel port have become a port where you can connect very
wide selection of devices like software protection dongles, removable disks, modems, network adapters, printer
sharing units, parallel port extenders, soundcards, electronic telecard readers and many homebuilt circuits. . .
Parallel port powers simple A/D interface - 10/23/97 EDN Design Idea If you have to sample just a few low-rate analog signals, or your
PC's slots are all full or too outdated for the newer data-acquisition products, a simple interface may be all
you need. You can build such an interface that requi. . . [by David M Acre, McDonnell Douglas Aerospace, St
Louis, MO]
Parallel Port Relay Interface
(Bill Bowden) - Below are three examples of controlling a
relay from the PC's parallel printer port (LPT1 or LPT2). Figure A shows a solid state relay controlled by one of
the parallel port data lines (D0-D7) using a 300 ohm resistor and 5 volt power source. The solid state relay will
energize when a "0" is written to the data line. Figure B and C show. . . . [Bill Bowden, designer]
Parallel port replaces embedded µC - 07/08/98 EDN Design
Idea Many applications use an embedded processor, which has certain needs: software, RAM, ROM, board space, and
others. Frequently, another host computer, usually a PC, controls the application. Using a single CPLD, you can
dispense with the embedded processor[File contains multiple circuits. Scroll to find this one. ]Design Idea
by Eli Kohav and Leonid Grossman, ECI Telecom, Petah-Tikva, Israel]. . . [by Eli Kohav and Leonid Grossman, ECI
Telecom, Petah-Tikva, Israel]
Parallel Printer Port Interface - This is the basic interface I used as part of my Computerized Room project. This is the
parallel interface only. The 8 bit input card can be found, along with the rest of the project, at Computerize
Your Room/House. This interface, as well as the other two interfaces, came from the book "The Robot Builders
Bonanza", by Gordan McComb. This interface is also useful for controlling small robots, etc. . . . [Circuit
designed by Aaron Cake]
Parallel-port Debugging Aid - A useful device which can be built (if you're patient enouch ) into the shell of a DB-25
connector. It provides simple visual indication of 8-bits of data useing LEDs and provides three inputs, via
switches. Plug it into a parallel port on your PC and then imbed special instructions in your code to provide
visual feedback, simliar to a "PORT 80" card. . . .
Parallel-Printer Adapters Find New Use As Instrument Interface - 06/22/95 EDN Design Idea The venerable parallel-printer adapter has found many uses
during its long lifetime. Now, you can use the port as an instrument interface-for connecting a photometer and a
PC, for example. Designers of the Centronics, or parallel, printer adapter intended. . . [by Dhananjay V Gadre,
Inter-University Centre for Astronomy & Astrophysics]
Part 1-Atmel AVR Infrared
Downloader-Host-side. - This project makes firmware
upgrades easy: The target has an Infrared receiver and the data is sent via IR. The IR transmitter is based on
V-USB. The host-side consist of host-program for Win32 PC using Libusb-Win32 , device based on ATmega8 using. .
.
Part 2-Atmel AVR Infrared
Downloader-Target-Side - In the first part we have
considered a circuit design and software of Host-part. The target-side consist of device minimum system based on
ATmega162 and infrared hardware unit. Device minimum system consist of ATmega162, external SRAM 8 kbyte and. . .
Passive Ethernet Hub - . . . [Andy Collison's website]
PBUS, multi-drop RS422/485-type network for
interconnecting PIC nodes - PBUS is an RS485-like
multi-drop bus for interconnecting PIC and other microcontroller-driven devices. Protocol and software is written
by Jap. Just include a separate pbus library file into your project and add your command handlers for the
specific device in a few lines. . . [Peter Jakab, Electrical Engineer, Engineer of Informatics]
PBX Linecard & Terminal (SB-101) - Application Note. . . [National Semiconductor]
PC & Dacs Generate Two Simple Analog Outputs - 10/14/00 EDN Design Idea The simple and inexpensive circuit in Figure 1 generates two
PC-controlled analog reference voltages. You supply a wall-adapter supply and a parallel connector, and the
circuit is ready to run. The circuit uses two 12-bit AD7243 . . . [by Jim Terrade, Clermont-Ferrand, France ]
PC / Laptop to MP3 - I rustled up this simple electronic circuit of necessity. It takes audio straight off the
Internet, and puts it on a digital recorder. There are various advantages to this, not least that one can pull
the audio off any computer without having to have this or that software in place first. Note that this is a
digital-to-analog-to-digital conversion, so the sound will only. . .
PC 12V Adapter - This circuit provides a short circuit protected power supply from PC 12V supply voltage.
This is particularly handy when working with PC interfacing projects. Designed by M Asim Khan from Pakistan. . .
. [Wichit Sirichote, designer]
PC 87310 Super I/O (SB-117) - Application Note. . . [National Semiconductor]
PC and DSP µP Interrupt Each Other - 06/09/94 EDN-Design Idea Efficient synchronization and communication between a PC bus and
an add-on board is important for virtually all applications—but is essential to DSP boards such as those that use
the TMS320C25. A bidirectional register mapped in I/O space at the DSP side and decoded in I/O channels at the PC
side provides this efficiency an. . . [by Jerzy R Chrzaszcz, Institute of Computer Science, Warsaw, Poland]
PC Audio Signal Generator Using RS232 Port - . . .
PC Based 7 Segment Rolling
Display - It is very interesting and convenient to be able
to control everything while sitting at your PC terminal. Here, a simple hardware circuit and software is used to
interface a 7-segment based rolling display. The printer port of a PC provides a set of points with some acting
as input lines and some others as output lines. Some lines are open collector type which can be used as input
lines. The circuit given here can be used for interfacing with any type of PC’s printer port. . . [Designer's
name not given]
PC based digital thermometer based around a
Dallas Semiconductor DS1621 - . . . [Alberto Ricci Bitti]
PC
based Frequency Meter - . . .
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