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Computer Cable Designs
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Last Updated on: Thursday, November 30, 2017 07:38 AM


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"Whistle & Point " Cable Tracer Connect it to one end of the cable conductor and listen for the whistle at the other end and your wiring tracing problems are solved.___ SiliconChip

18-bit ADC uses PCs serial port 09/27/01 EDN-Design Ideas A PC usually requires a plug-in ADC card to process analog signals.  However, with the circuitry in Figure 1, a PC can communicate with an 18-bit ADC through its serial port.  The port provIdeas both positive and negative power supp__ Circuit Design by Yongping Xia, Teldata, Los Angeles, CA

9 pin (Female) Nullmodem Cable Circuit only, no circuit description included. __ Designed by Tony van Roon  VA3AVR

A Handy USB Breakout Box for Project Development You can build it in 10 minutes and for less than $15___ SiliconChip

A Serial Infrared Remote Controller This is a simple, cheap device that can be connected to any serial port to control most components that have infrared remote controls.  I designed and built it   (on a solderless breadboard) in 1991.  In 1992 I wrote a lengthy description of it for an electronics class.  In 1994 I finally designed a PC board for it, using a free, X-based PC board design program called pcb, and in 1995 I etched several of the boards and made the final product __ Designed by John DuBois

Accurate USB 2.0 temperature sensor needs only a handful of parts 05/24/07  EDN-Design Ideas A USB-to-serial converter forms the heart of an accurate USB temperature sensor__ Circuit Design by Silvio Lauckner, Ismaning, Germany

Add current boost to a USB charger 09/19/02 EDN-Design Ideas The popular USB interface can charge a portable device while transferring data.  But for high-capacity batteries, the 500-mA output current of USB hosts and powered hubs greatly extends the charging time.     (Unpowered USB hubs supply nothan 100 mA.   ] Thus, a system that accepts charging power from an ac adapter as well as the USB port isconvenient__ Circuit Design by Len Sherman, Maxim Integrated Products, Sunnyvale, CA

Advanced Topology USB Battery Charger Optimizes Power Utilization for Faster Charging Design Notes 336: The LTC4055 seamlessly manages power flow between an AC adapter, USB cable and Li-Ion battery, all while maintaining USB power specification compliance. __ Linear Technology/Analog Devices

All-In-One USB Power Management IC Solution DN1008 Design Notes___ Linear Technology/Analog Devices

An Adjustable Video Cable Equalizer using the LT1256 DN92 Design Notes___ Linear Technology/Analog Devices

AVR In-System-Programmer USB AVR programmer that supports a lot of AVR microcontrollers __ Designed by © Vassilis Serasidis

Bit Wacker-18F2550 This is an easy to assemble, through-hole version of the popular UBW board.  This is a spectacular little development board featuring the PIC18F2550.  Based on the work of Brian Schmalz, the UBW is a small board with a command interpreter for basic input and output control.  When attached to a Windows/Max OS X/Linux computer, the UBW will show up as an RS232 Com port! You control the individual I/O pins on the PIC through simple serial commands.  This is a kit and includes a pre-programmed 18F2550 and both male and female connectors so you can choose which connector you would prefer. __

Bit Whacker-Simple Circuit input/ output Device The UBW board is a small board that contains a Microchip PIC USB-capable microcontroller, headers to bring out all of the PICs signal lines   (to a breadboard for example) , only costs about $15-$20 to build and is powered from the USB connection.  I designed this board to be a simple parallel port replacement tool for Bruce Shapiro for use in his bits-to-bytes-to-bots class.  Apologies to all other 'Whacker' projects like EDTP's Packet Whacker for stealing a great name.  All tools used to design this project are free, and the design is open to anyone to use for whatever they wish.  Please build your own and improve upon it!. __

Build a UPS for USB Devices 04/11/02 EDN-Design Ideas Portable systems often include circuitry that derives power from an external source, such as USB.  When the system disconnects from the USB supply, a battery takes over and supplies current via a DC/DC converter.  A diode-OR connection  (Figure 1) offers the easiest way to ensure that the supply voltage doesn't sag during this switchover to the battery__ Circuit Design by Mark Cherry and Jean-Claude Ailloud, Maxim Integrated Products, Sunnyvale, CA, and France

Build a USB-based GPIB controller 112/06/05 EDN-Design Ideas Roll-your-own USB-based instrumentation bus__ Circuit Design by Boštjan Glazar, Marko Jankovec, and Marko Topic, Laboratory of Semiconductor Devices, Ljubljana, Slovenia

Build your own printer cable LCD Display Connecting a LCD display to your personal computer is an easy job.  Displaying data from your PC to a LCD can be proven very exiting, so give it a try and build your own today! In this article we will use a 2 lines x 16 characters LCD display with Hitachi HD44780 onboard controller __ Contact: IQ Technologies

Cable finder seeks out wall conduits 05/11/00 EDN-Design Ideas When you debug home electrical wiring, a tool that determines the location of cable conduits comes in handy, especially when problems arise.  Some tools, such as nylon or glass fiber guIdeas, contain small magnets and compasses that act as sensor elements__ Circuit Design by Luis Miguel Brugarolas and Manuel RamĂłn, Sire Sistemas y Redes Telematicas, Tres Cantos, Madrid, Spain

Cable Tester Have you ever wondered if a particular cable is delivering mains power supply to your device or not? Here is a solution that helps you test cable continuity without requiring any...___ Electronics Projects for You

Cable tester is fast & cheap 09/24/98 EDN-Design Ideas NOTE :  multiple circuits, scoll to this one.  The cable tester in Figure 1 uses a low-end 8-bit µC.  The specific µC to use depends on the number of conductors in the cable you want to test.  For the current application, two types of cables were under test, one with three conductors and another with seven.  So, the Motorola 68HC705P9 µC was suitable.  The program first determines which type of cable is under test by checking the cable-switch position   (Listing 1).  Then, the program checks each conductor line from A0/C0 to A7/C7 by putting a high-level voltage from output port A on one end of the wire and measuring the response on the other end, which is connected to the input port C.  If all of the checks show conductivity, the green "pass" LED turns on.__ Circuit Design by Abel Raynus, Armatron International, Melrose, MA

Cable Tester Uses LEDs to Find Faults 22-Oct-09 EDN-Design Ideas Test as many as 16 wires with LEDs as continuity indicators__ Circuit Design by Pavel Šádek, Apri, Roznov pod Radhoštem, Czech Republic

Casio QV-200 Digital Camera Cable Lose your cable? Build it yourself and save $29.  Fits many QV models __ Designed by Bob Blick

CentronICs port generates narrow pulse widths 08/04/01 EDN-Design Ideas Variable-pulse-width signals are useful in control circuitry for positioning and holding purposes in robotics and power electronics.  Frequently, the need arises for pulses with width less than 1 msec.  Delays less than 1 msec are usually not available in most programming languages, so generating such pulses can be a problem__ Circuit Design by Darvinder Oberoi, CEDTI, Jammu, India

Circuit Charges Supercapacitors to 7V from USB Power 04/26/07 EDN-Design Ideas Switching regulator charges three supercapacitors with current limit.__ Circuit Design by Fran Hoffart, Linear Technology, Milpitas, CA

Circuit compensates system offset of a load-cell-based balance 08/16/07  EDN-Design Ideas A dual DAC stores the system-offset voltage, which gets determined during a power-on calibration sequence.   It’s a challenge to interface a resistive bridge sensor with an ADC receiving its power from a 5V single-supply power source.  Some applications require output-voltage swings from 0V to a full-scale voltage, such as 4.096V, with excellent accuracy.  With most single-supply instrumentation amplifiers, problems arise when the output signal approaches 0V, near the lower output-swing limit of a single-supply instrumentation amp.  A good single-supply instrumentation amp may swing close to single-supply ground but does not reach ground even if it has a true rail-to-rail output.__ Circuit Design by Luca Bruno, ITIS Hensemberger, Monza, Italy

Circuit Tests Twisted-PaIR Cables 01/19/12 EDN-Design Ideas Quickly test a cable containing twisted-wire pairs and detect open or reversed pairs, shorted pairs, and shorts between unrelated pairs.  Using the system shown in Fig 1, you can quickly test a cable containing twisted-wire pairs and detect open or reversed pairs, shorted pairs, and shorts between unrelated pairs.  The tester consists of an active test set that plugs into one end of the cable, and a passive terminator that plugs into the other end.  (An RS-449 cable is used as an example.)__ Circuit Design by Mark D Braunstein, Contel Information Systems, Fairfax, VA

Color Video Travels On Twisted-PaIR Cable 08/17/95 EDN-Design Ideas This circuit transmits video anywhere phone lines exist.  Although the circuit has more electronic components than the traditional single amplifier used to drive a coax cable, you can easily justify the additional electronics required to drive twisted-pair cables__ Circuit Design by Raphael Horton, National Semiconductor, Santa Clara, CA

Commonly Used RS-232 Serial Port Cables This document includes information how to make common wires for RS-232 connections.  I have shown pinouts for standard 25 pin connection and de-facto 9 pin connector used in PCs. __ Designed by Tomi Engdahl

Compensate system offset of a load-cell-based balance 08/16/07  EDN-Design Ideas A dual DAC stores the system-offset voltage, which gets determined during a power-on calibration sequence.   It’s a challenge to interface a resistive bridge sensor with an ADC receiving its power from a 5V single-supply power source.  Some applications require output-voltage swings from 0V to a full-scale voltage, such as 4.096V, with excellent accuracy.  With most single-supply instrumentation amplifiers, problems arise when the output signal approaches 0V, near the lower output-swing limit of a single-supply instrumentation amp.  A good single-supply instrumentation amp may swing close to single-supply ground but does not reach ground even if it has a true rail-to-rail output.__ Circuit Design by Luca Bruno, ITIS Hensemberger, Monza, Italy

Configurable RS232 to Ttl to I2c Adaptor RS232 signals cover a much longer distance than standard TTL and I2C signals.  Also, RS232 signals have better noise immunity.  RS232 is a well-known standard supported by many popular integrated circuits...___ Electronics Projects for You

Connect  RS232 Modem to E-10G Here is the instructions to build a cable adaptor  to  connect your pocket PC with any external  RS232  modem.  The Pocket PC must have serial  port __ Designed by © Vassilis Serasidis

Connecting Sega 3d Glasses to a PC Serial Port This documents ties to clear out one method for connecting Sega 3D glasses to PC serial port for cheap PC virtual reality.  This who do no not know what those Sega 3D glasses are, here is a description: __ Designed by Tomi Engdahl

Control stepping Motor via USB interface This is an example that demonstration how to control some devices via USB interface.  The PC software program with delphi.  Feature:, CPU PIC18F4550 with full speed USB interface at 48MHz.  , USB 2.0 compliance, Use on-chip USB driver __

Current-Limited DC/DC Converter Simplifies USB Power Supplies DN252 Design Notes___ Linear Technology/Analog Devices


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