Easy Downloader - Build your own a personal writer forprogramming HEX code into Flash based microcontroller AT89C2051  (2k) andAT89C4051  (4k) .  Simple hardware and Easy use software in DOS and Windowversion.  Single-side and double side PCB files included.  sourcecode with sdcc version! __ Designed by Wichit Sirichote

Easy Downloader - Build your own a programmer for writing intel-HEX file to the 89C51, 89C52 and 89C55, PCB file included, Window version UPLOADER EZ3, EZ3.1, modified source code with sdcc.   __ Designed by Wichit Sirichote

Easy-Downloader V3.0 - New design the flash programmer board specially for 89C55WD.  The lock and erase functions are now implemented and tested.   (not recommended)  __ Designed by Wichit Sirichote

Easy-To-Build Bench Power Supply - It runs from a 9VAC plugback and offers six fixed dual-polarity DC voltages from 3V to 15V.__ SiliconChip

Easy-to-build PIC programmer - This is the simple and easy-to-build PIC programmer that I use for many Microchip  (r) microcontrollers.  Only a few parts, JDM Compatible.  I use IC-PROG with this programmer.  I programmed sucessfully the PICs 16F82, 16F628, 12F629, 12F675, 12C50X, also 16F87X series.12/06/04 Corrected connections on 28-Pins.  Thanks to 'Her Masters Voice' & Alisher ! Microcontroller PIC microchip programmer.  JDM compatible.  Before building this programmer, be sure that your serial port  (RS232) have at least 11 Volts.  At least 11 volts is needed to program the Series "C"  (12C50X, 16C84, 

Edge Detector runs off of single supply - 12/04/97 EDN-Design Ideas - You can use a single-supply circuit to generate a pulse on both the rising and the falling edges of a signal for use with counters or similar devices that require only a rising edge to trigger (Figure 1a) .  R1 and C1  form a differentiator that converts rising edges to positive spikes and falling Design by Joe Meloche, Ingersoll-Rand Fluid Products Division, Bryan, OH

EE 476 Final Project. Portable MP3 Player - In the recent years, the MPEG Layer III  (MP3) music compression format has become an extremely popular choice for digital audio compression.  Its high compression ratio, and near CD quality sound make it a __ Designed by Peter D'Antonio and Daniel Riiff

EE 491 Senior Project Digital Oscilloscope Cornell University 2001 - My senior project is to design and build a digital oscilloscope for Professor Land.  This project involves a number of design challenges.  On the analog side, I need a fast, low noise A/D converter.  In addition, the circuit requires a -20V bias from a 5V supply.  In the realm of digital, it involves interfacing two micro-controllers with each other, an LCD display, and an analog to digital converter.  With such a broad range of challenges, I searched for help from my professors and contacts I made on the web.  I was successful in getting __ Designed by Reid Gurnee

EEPROM Project - Many projects require the use of an external EEPROM to store data.  This project will give you all the details on how to interface the Basic Stamp II with a 64K SPI Bus Serial EEPROM.  Great for those datalogging applications __ Designed by Shaun Wilson

Effects of ParasitICs In Simulations 12/11/00 - App Note  Doc #930__ California Eastern Laboratories

Efficient LED Blinking for Embedded Systems - Smart hardware design can simplify the embedded software and make it more reliable.  Designers use blinking LED signals to indicate different status and for inbuilt testability.  Making an LED array blink...__ Electronics Projects for You

Efficient Processor Power System Needs No Heat Sink - DN135 Design Notes__ Linear Technology/Analog Devices

Egyption Talking Frog Box - This device 'listens' to a conversations and then interjects words and phrases at inappropriate times.   __ Designed by Luhan Monat-Mesa Arizona

Eight Switcher Powers High-Performance µPs - 04/13/95 EDN-Design Ideas - The circuit in Fig 1  delivers 8A for driving as many as two of today's high-performance, high-speed µPs.  You can also optimize the design for lower current by changing a few components.  Most systems use a low-current 12V bias supply and a poorly regulated high-current 5V to power the logic.  However, Design by Chester Simpson, National Semiconductor, Santa Clara, CA

Eight-bit Generator & Display for Microcontroller - Here is a simple but effective arrangement for producing the desired bitstream and display.  It has been successfully used for fault finding.   __ Designed by © electronic for u

Eight-pin µC forms one-chip programmable VCO - 09/24/98 EDN-Design Ideas - NOTE :  multiple circuits, scoll to this one.  The circuit in Figure 1 uses a Microchip 8-pin µC   (PIC12C671]as a voltage-controlled oscillator   (VCO].  Because  PIC12C671 has an internal 4-MHz oscillator, four-channel 8-bit A/D converters, and built-in power-reset circuitry, you need no external components to configure  VCO.  The µC reads two analog inputs through AN0 and AN1 Design by Yongping Xia, Teldata Inc, Los Angeles, CA

El-Cheapo Musicians' Lead Tester - Checking leads is a snap with this handy tester.__ SiliconChip

Electric cockroach zapper - Using a PIC for this device provides a lot of useful functionality.  The timing for the power pulse to the inductor is critical to getting the best Zap from your nine volt battery.  The longer the current is on, the higher the voltage.  Once the inductor reaches saturation, however, you are just waisting power.   __ Designed by Luhan Monat-Mesa Arizona

Electric Power Controller - suitable as dimmer for 100-Volt lamp up to1200W __ Designed by Seiichi Inoue

Electronic Card Lock for Appliances - The circuit presented here can be used as a lock for important electronic and electrical appliances.  When a card is inserted inside its mechanism, depending upon the positions of the holes...__ Electronics Projects for You

Electronic church bell controller - This circuit is a church bell controller.  Basic component is an ATmega32 microcontroller.  At the circuit 2 24LC32 eeprom memories is being used, the 1st for internal standard melodies and the 2nd one is for user's compositions.  This feature will be provided in the future __ Designed by Antonis Pontikakis © 03.10.2007

Electronic Combination Lock with AVR - CodeLock AVR electronic combination lock is realised with Atmel AVR microcontroller AT89C2051 or AT90S2313 or ATtiny2313 or ATtiny45.  Program in hex code is 2 kB long.  One user code  (Ver.1) is consisted of 1 to 8 digits.  One user code  (Ver.2.1, 2.2, 2.3) is consisted of 1 to 4 digits.  If you buy the chip  (Ver.2.1, 2.2, 2.3) than you can enter 1 or 8 user codes that are consisted of 1 to 9 digits.