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Computer Interface Circuits

Computer Interface: 
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Last Updated: November 30, 2017 01:57 PM


Links to electronic circuits, electronic schematics, designs for engineers, hobbyists, students & inventors:

R5000 Receiver Interface -  This circuit is a modified version of an original interface on QSL Net. It is a fully isolated interface allowing computer control of the Trio/Kenwood R5000 receiver. Separate software is needed to control the receiver. . . .  [Andy Collison's website]

 

Radio Clock for PC's -  There are a number of low frequency time signals around the world that broadcast accurate time and date information. These signals are used by the many cheap radio controlled wall and desk clocks that can easily be purchased these days. The time signal is also useful for the synchronizing the clocks of computers. . .  [Jonathan A. Buzzard]

 

Radio Interface Box for the Motorola Radius GP300 -  The Motorola Radius GP300 VHF or UHF handheld transceiver has a dedicated signal port on its back for programming it. Lots of info on that subject can be found on the web, but although the circuit wasn´t complicated, I didn´t find a PCB layout for it. I also wanted something to connect the RIB to the GP300 in a fast and easy way. What I present here is the result of my work on this. . . .  [EB4EQA's Projects]

 

RAID Controller Card -  Application Block Diagram. . .  [Intersil]

 

Rc5 Infrared Remote Control Receiver for Media Centers -  Fairchild App Note. . . 

 

RC5 Infrared Remote Control Receiver for Media Centers  -  A few time ago I decided to create a media center box to replace my DVD player, satellite receiver, VCR and my kid's Play Station 2, to one device. So, I made a core 2 duo processor system that actually replaced with succeed, all my electronic devices. The only thing that was missing was a remote control to switch On/Off my Media Center. After I searched on the net to buy a complete remote control system, I saw that the price was a little bit high (about 90 euros). I checked my stuff to find my old 7-in-one remote control that I had bought 2 years ago and I started to build my own remote control receiver circuit. . . . 

RC5051 Converter Design Template/ ABR-6001 -  Fairchild App Note. . . 

 

RC5051 DC-DC Converter/ ABR-6002 -  Fairchild App Note. . . 

 

Read-Channel Processor Uses PRML to Increase Capacity of Disk Drives  -  Analog Devices-Analog Dialogue. . .  [by Haun, Al and Kovacs, Janos and Kroesen, Ron]

 

Reading Data from the Parallel Port -  The diagram below shows 5 switches connected to the 5 input lines of the parallel port. An external 5 volt power supply is used to provide high logic levels to the input pins when the switches are open. Three 1. 5 volt batteries in series can be used to obtain 4. 5 volts which is close enough. The 330 ohm resistors. . . .  [Bill Bowden, designer]

 

Real-World I/O Cards for the CMOS STD Bus -  Scroll to find this circuit. . .  [Analog Devices-Analog Dialogue by Mills, John]

 

Rectifier tracks positive and negative peaks -  06/08/06 EDN Design Idea   Versatile precision rectifier also delivers full-wave output. . . .  [by Harry Bissell Jr]

 

Reduced Integration Time Improves Accuracy in Dead Reckoning Navigation Systems -  Analog Devices-Analog Dialogue. . .  [by Wang, Ben]

 

Reference Board User Guide for PI7C8152 -  Application Note # 069. . .  [Pericom Semiconductor]

 

Regulator Circuit Generates Both 3.3V & 5V Outputs from 3.3V or 5V to Run Computers & RS-232 -  DN71 Design Notes (Linear Technology). . .  [Linear Technology]

 

Relay interface add-on board for PC -  . . . 

 

Remote Relay Controller -   I reprogrammed the PIC inside the LDG DTS-6R remote antenna switch to control a 8-relay PCB I got from eBay. I built a relay driver that talks to the remote controller via two-wire rs-232 serial interface. It has a programmable default status so the required relay states appear at power-up. . . .  [Roberto Barrios EB4EQA]

 

REMOTE[RS232] using Easy-Server V0.9 -  Experiment the microcontroller with internet server. The Easy-Server provides simple means for connecting microcontroller through a 9600 8n1 serial interfacing. Exemplary circuit using PIC16F84 for REMOTE RS232 and experiment description were included. . . .  [Wichit Sirichote, designer]

 

Replacing Dedicated Protocol Controllers with Code Efficient & Configurable MicroControllers-Low Speed can Network Applications -  Application Note . . .  [National Semiconductor]

 

Replacing the Intel 21150 or PLX PC I6150 with the PI7C8150 -  App Note # 07) 9. . .  [Pericom Semiconductor]

 

Replacing the PLX PC I6150 with the PI7C8150B -  Application Note # 080. . .  [Pericom Semiconductor]

 

Reset Card Eases µP Troubleshooting -  10/26/95 EDN Design Idea   The circuit in Fig 1a generates repetitive system resets to 68XXX processors. These resets allow you to troubleshoot power-up problems using a scope instead of a logic analyzer or storage scope. This reset card, which you can bu. . .  [by Michael A Martone, Teleos Communications, Eatontown, NJ]

 

Reset ICs create sequenced or long resets -  11/20/97 EDN Design Idea    Reset-generator ICs offer an inexpensive way to generate reliable reset signals for µC and µP applications. Certain applications, such as multiple-processor systems, require multiple resets. . . .  [by Doug Anderson, Electronic Technology Corp, Ames, IA]

 

Resistor implements half-duplex RS-232 with echo -  11/24/99  EDN Design Idea   A previous Design Idea   (" SingleµC pin makes half-duplex RS-232 , " EDN , Aug 5, 1999, pg 118) presented a way to implement half-duplex RS-232 communications without echo. Sometimes, an echo is desirable in aµC application. You can obtain the echo by using. . .  [by Matt Bennett]

 

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Computer Interface:  #'s         A -  B        C -  E
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