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AVR Student Projects - More student projects on AVR at
Cornell University by Bruce R. Land. (circuit added 09/09)
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AVR Thermometer - Build a simple digital thermometer using
20-pin uC, AVR 90S2313 and DS1820. The thermometer is capable of
measuring temperature from -55C to +125C! with 1 degree C
resolution. (circuit added 09/09) |
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AVR-USB Remote Sensor - RemoteSensor is a wireless thermo-
and hygrometer with an USB port on the receiver. You can draw fancy
diagrams of temperature and humidity for up to 16 wireless sensors.
….(Circuit design added 11/08) |
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Balanced Tube Line Input Stage - AS088 Jenson Transformer
Application Note (app note 6/07) |
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Balanced XLR Input to Unbalanced RCA Output - AS089 Jenson
Transformer Application Note (app note 6/07) |
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Band Pass Network - Circuit Ideas for Designers
Application Notes Advanced Linear Devices, Inc. (app note
added 6/06) |
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Basic PIC16/17 Oscillator Design - Microchip Application
Note Published 10-Apr-02 (app note added 2/06) The oscillator
circuit is one of the most overlooked areas of microprocessor
Circuit design. Components are usually .... |
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Basic routine simplifies factoring - 09/12/97 EDN-Design Ideas
Logarithms greatly simplify mamatical operations. Factoring, however, presents
a problem Pocket calculators are clumsy when it comes to that operation.
The program factor.bas (Listing 1]is a convenient alternative if you want to
obtain results in 3 minutes or less (that is, turn on computer, put
disk in b drive, select "qbasic," run program,.... [Design
Idea by Alan Land, Keystone Digital Co, Pittsburgh, PA] |
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Basic Serial EEPROM Operation - Microchip Application Note Published
26-Aug-97 (app note added 06/06/06) |
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Basic Stamp I & PC Relay Controller - This project shows you how to
build a relay controller using the Basic Stamp I interfaced to the PC serial
port. The Visual Basic 5 software developed for the interface lets you
interact with the Basic Stamp to turn ON/OFF up to (2) relays attached to the
Basic Stamp I/O pins. As shown below in the screen capture of PC-Relay,
it's easy to select the desired com port using the drop-down menu....(diagram
added 1/07) |
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Basic Ups Power Supply - ….(electronic schematic added 08/08) [Site is
under construction right now] |
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Basic USB-Rs232 Communication with PIC MicroControllers - The quickest
way to display something is probably sending the data to the computer to be
displayed on the monitor. One of the ways to do this is to use the USART module
on board the PIC Microcontroller by making use of the pins RC6 and RC7 which is
also the TX and RX pins respectively when the SPEN bit on the RCSTA register is
set. ….(design added 11/08) |
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Better Approach to Designing an RTD Interface with a SpreaDSheet -
02/07/08 Issue of EDN RTDs (resistance-temperature detectors] are the
preferred sensor choices for designs requiring precision. Although RTDs are
approximately linear over the limited temperature range of 0 to 100°C, these
sensors exhibit a slight but progressively more nonlinear
temperature-versus-resistance characteristic as the measurement range widens....
[Design Idea by Robert S Villanucci, Wentworth Institute of Technology,
Boston]Voted best of Issue! |
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Bi-Directional Level Translator - Novel two transistor connection
converts 5V logic signals to 3V logic signals without latchup. This
flexible architecture works for 1V to 12V conversions as well. Voted best of
issue! .… [Jim Haggerman, Hagerman Technology LLC] |
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BIOS INT1Ch measures frequency - 09/18/08 EDN-Design Ideas An
improved Design Idea directly calculates component values for an RTD circuit
using an Excel spreadsheet....[Design Idea added 008/09] EDN is migrating links.
This link is not verified. Search the "title" + "EDN" for new link.
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Bios Interrupt Does Eight Channel Frequency Counting - 12/21/00
EDN-Design Ideas / (added 2/06] / PDF contains multiple circuits scroll to
find this circuit EDN is migrating links. This link is not verified.
Google the "title" EDN for new link. |
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Bios Interrupt Performs A/D Conversion - 03/16/00 EDN-Design Ideas /
(added 6/06] EDN is migrating links. This link is not verified.
Google the "title" EDN for new link. |
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Blade PC - Intersil Application Block Diagram (app note added
6/06) |
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Blade Server - Intersil Application Block Diagram (app note
added 6/06) |
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BMAC Device Software Design Guide [AN-678] - National Semiconductor
App Note Dated 05-Aug-1995 (application note added 4/08)
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BMAC Hardware Design Guide - National Semiconductor Application Note
(app note added 2/06) |
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Boot loader for TMS320 uses bytewide EPROM - 04/25/96 EDN-Design Ideas
The price of high-speed DSP chips continues to drop. The devices pack a lot of
horsepower into small packages and are widely available. In contrast, high-speed
(<-4-nsec]EPROMs are not only expensive, but also scarce. To enhance the
usefulness of their chips, DSP-chip manufacturers include an onboard boot-loader
ROM.... [Design Idea by Robert Richards, Digital Audio Corp, Raleigh, NC] |
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Buddy Box Lead Connections - (electronic schematic added 6/060
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Buffer adapts single ended signals for differential inputs - 2-Sep-04
Issue of EDN DC coupling of single-ended signals into differential-input,
single-supply ADCs can be challenging. The input signal requires level shifting
from ground to VS/2 as well as single-ended-to-differential conversion. In
addition, you must balance the differential inputs of the ADC to cancel
even-order harmonics and common-mode noise.... [Design Idea by Randall Carver,
Analog Devices Inc, Greensboro, NC] |
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Buffered PIC Chip Interface - (electronic circuit added 4/05)
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Build a complete industrial ADC interface using a microcontroller and a sigma
delta modulator - 5-Jul-07 Issue of EDN Handling both 0 to 10V
and 0- to 20-mA inputs, this circuit digitizes the inputs and feeds a low-cost
microcontroller.... [Design Idea by Patrick Weber and Craig Windish, Siemens
Energy and Automation, Pittsburgh, PA] |
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Build A HamComm Data Slicer - Until recently many of the ham radio
operating modes required specialist equipment that most often had to by build
and was exclusive to the task. Enter the Personal Computer. The PC made life a
little easier for the ham as it was now able to take over some of the jobs that
bespoke hardware did. But it still wasn't quite there yet. The task of the PC
was mainly to be a 'front end' to a now multi capable bespoke box....(circuit /
schematic added 6/07) |
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Build a Simple Serial Programmer for AVR Devices - Note that the
AVR910 programmer does not support all AVR processors, especially the newest
chips. Be sure to check the documentation to see if it supports the version(s)
of the processor you are interested in…(added 6/07) |
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Build a USB-based GPIB controller - 16-Dec-05 Issue of EDN
Roll-your-own USB-based instrumentation bus.... [Design Idea by Boštjan Glazar,
Marko Jankovec, and Marko Topic, Laboratory of Semiconductor Devices, Ljubljana,
Slovenia; Edited by Brad Thompson and Fran Granville] |
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Build Logic Gates using Discrete Parts - ASCII format (Circuit design
added 7/06) |
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Build Your Own Irda Sir Transceiver Dongle Using Mcp2120 - (schematic
/ circuit added 2/07) |
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Build your own Joysticks & Controllers - Building your own normal PC
joystick is not economically wise, but if you can't find a joystick you would
like to have, then you have te consider doing it yourself. The connections
inside PC joystick are quite simple to do, the harder part is the mechanics.
Buttons are quite easy to mout to the case you use when you select suitable
buttons, but the problematic....(design added 07/03) |
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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....(circuit diagram added 09/08) [Site is under construction
right now] |
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Bus Switch Applications for Laptop Computers; Memory Modules; A/D Video; Etc
- Pericom Semiconductor Application Brief # 013 (app note added 2/05)
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