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Electronic Projects to Build
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Last Updated: October 24, 2017 02:55 PM

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

DIY ECG Patient Simulator / ECG Tester -  One of the most important test equipment in the biomedical workshop is the ECG Tester or Patient Simulator.  The Patient Simulator is connected to the ECG monitor and delivers the typical ECG signal.  Only with such a tester an ECG monitor can be repaired, the functions and alarm settings checked and loose connections of the patient cables be located.  A Patient Simulators usually costs several hundred dollars and is unaffordable for small hospital workshop specially in developing countries. __ Designed by Frank Weithöner

DIY Electrostatic Loudspeaker Part 1 -  An ESL using ready made panels available exclusively from ESP.  Part 1   __ Designed by Rod Elliott  ESP

DIY Electrostatic Loudspeaker Part 2 -  ESL cabinet details.  Part 2   __ Designed by Rod Elliott  ESP

DIY Electrostatic Loudspeaker Part 3 -  ESL Transformers and Power Amplifier Details.  Part 3   __ Designed by Rod Elliott  ESP

DIY Fast LUX Meter -  Lux meters that are capable of measuring high-speed light intensity fluctuations are hard to find.  This article describes a DiY lux meter that has a linear relation between the light intensity and output voltage and has a -3 dB frequency range from DC to 350 kHz.  The spectral sensitivity is broadly similar to the human eye. __ Designed by Freddy Alferink

DIY Flexible Display -  23-Jan-14 -Design News:   Flexible displays are a hot topic, and my goal was to find a cheap and easy way to build one at home.  Normally, flexible displays refer to Oled or E ink, but I created a working prototype of a flexible display that can be built at home without special equipment.  The prototype shows a seven-digit __  Gadget Freak-Case #250

DIY flying saucer / UFO -  This project was inspired by one of those solar powered lawn lights.  I had taken the bottom off of one and hung it in a tree.  A neighbor commented that it resembled a small flying saucer.  Hmmmm.   __ Designed by Luhan Monat-Mesa Arizona

DIY Front Panels -    NOTE: Must register on this site __ Designed by Published in Elecktor July/Aug, 2010

DIY HP-MSIB Cable Guide -  HP-MSiB cables, original or third-party, are now difficult to find and frequently for more money than the equipment to which they will be connected.  it seems HP used special controlled-impedance cables for their originals, but it turns that for reasonable-length runs, simple 50-pin twisted pair SCSi cable works just fine.  This is how I built mines __ Designed by Roberto Barrios EB4EQA

DIY intervalometer based on Arduino -  i would like to share with you my intervallino project with all the steps and details it involved.  When I started looking for similar projects on the web I found extremely useful to have a look at either the circuit schematics or snippets of code or even soldering videos!  For this reason I try here to be the most complete and precise that I can, so to give some hints and ideas to anyone willing to make a similar project. __ Designed by L

DIY intervalometer for Sony NEX 5N camera -  i decided to make a DiY intervalometer for my Sony NEX 5N camera so that I could do time-lapse photography.  This intervalometer should work with most Sony cameras: NEX, Alpha and other.  To work intervalometer used infrared LED__ Solderer.TV

DIY LAN Cable Tester -  in our hospital we often have problems with computer network cables.  Cables tear because of poor material quality or bad installation or were gnawed by animals.  The new installed cable then does not work because the crimped plugs do not have contact or the sequence of the wires are wrong.  __ Frank Weithöner

DIY Lie Detectors -  Makezine recently posted a diy lie detector kit that uses your skin resistance (aka sweat) to detect a lie.  The kit is well explained and consists of two probes you place on your palm with a red/green LED readout.  __ 

DIY Microphone Cable for iPod Touch (2nd Gen) -  Put together your own Y Splitter Adapter Mic/Speaker recording cable as shown in the circuit diagram below to use a PC Mic Headset with the iPod Touch (2nd Generation only) and iPhone.  __ 

DIY Nokia 51xx/61xx data cable -  This is a simple project for one winter night when you have nothing better to do.  Parts will not cost all that much, so you will save money by building the cable yourself.  This also works with everything I tried on my 6150 phone. __ Designed by © Madis Kaal

DIY PIC Programmer -  Program PIC s through your parallel port.__ 

DIY Plasma Globe using an automotive ignition coil -  There are all sorts of ways to make a plasma globe.  This page deals will detail how to make one using a small amount of easily obtainable components.  A normal transparent light bulb can be used as a plasma globe simply by connecting it to a high voltage, high frequency source.__ © RMCybernetics

DIY Power Pulse Controller -  This device uses a built in pulse width modulated signal generator circuit for triggering a power MOSFET.__ © RMCybernetics

DIY Pulse Induction Metal Detector with, PCB layout & Detection coil Details -  Hundreds of this Detector have been built with Very favourable Feedback __ Designed by G.L. Chemelec

DIY remote control based on PIC -  Control up to 8 devices by this easy constructable remote control.  it can work as a radio or infrared remote control, depending on the components.  Each device output can be configured to be momentary (turned on while you press the button) or latched.  Latched outputs can be toggled on/off by one button per channel, or turned on and off by two buttons per channel __ Designed by Peter Jakab

D-I-Y remote control for a Model train layout -  All you need is a picaxe, some code and a pair of pre-built UHF modules (plus a few minor parts.__ SiliconChip

DIY Serial MIDI Interface 80C51/80C31 Version -  Run out of iSA card slots in your PC? Want a real MiDi interface instead of the toy interface that is built-into your sound card? Got a COM port handy? Then build the Serial MiDi interface.  This page describes how to build this full-bandwidth single-port (one input and one output) MiDi interface.  The interface is buffered (that is, if the PC gets behind you won't lose data) and it works in Windows 3.1 and Windows 95 using a special (and very well-behaved) device driver.  A simpler version, using an Atmel AT89C2051 microprocessor,
 __ Designed by Paul Messick

DIY shutterglasses controller -  You are unsatisfied with the range of compatibility of your 3D glasses controller?   You have some glasses without controller (like ASUS) ?   Why not build your own for a few pennies?__ Martin Krysiak

DIY SMD Adapter -    NOTE: Must register on this site __ Designed by Published in Elecktor July/Aug, 2010

DIY Solar Birdhouse Light -  This solar birdhouse light is an economical circuit of a mini solar lighting system circuit is presented here.  At the heart of the circuit is a mini 6V/2W solar panel.  Here, this solar panel is used to charge a 4V/800mAh rechargeable battery through a charge current limiter circuit built around an adjustable 3-pin regulator __ Designed by D Mohankumar

DIY Solar Tracker System -  The solar panels are operating at optimal parameters when they are at the perfect right angle to the sun.  Unfortunately this is accomplished only if solar panels are rotated by the sun.  This is the purpose of this diy solar tracker system.  The solar tracker circuit uses a window comparator to maintain the motor in a idle state __ Designed by Popescu Marian

DIY Stereo System -  A quick and simple 2.1 stereo system, built from scratch.__ 

DIY Stomp Box Enclosures  -  i get a challenge out of making something that cost me nothing or close to it.  While passing by a place that sells all kinds of aluminum I got the idea of using a piece of square aluminum tubing for a stomp box enclosure.  Cloning a circuit for a stomp box can be fairly simple but when you start to design it to fit in a box even the simplest design takes some thought and planning.  This might seem impractical when you can just go to a place like Radio Shack and buy a box.  Whenever I'vedone this I have rarely found a box that was just what I wanted for a stomp box.  There are some rare places where you can get boxes like "Small Bear Electronics" which is an excellent resource.   __ Designed by Jon Tirone, AKA John Fisher

DIY Terminal Strips -  PIC  Project   __ Designed by Luhan Monat - Mesa Arizona

DIY Tesla coil-DC Powered with Plasma Output -  The aim of this design was to get the highest voltage (or longest arcs) possible from a single self contained unit.__ © RMCybernetics

DIY UFO -  This project was inspired by one of those solar powered lawn lights.  I had taken the bottom off of one and hung it in a tree.  A neighbor commented that it resembled a small flying saucer.  Hmmmm.   __ Designed by Luhan Monat-Mesa Arizona

DIY Water Softener System -  Hard water has a high concentration of minerals, and of these calcium salts are the most troublesome.  But there is a solution coming in form of a cheap diy water softener system built with the well-known 555 IC .  Actually the price of this diy system is so low that even if this doesn’t work you won’t be upset.  The __ Designed by Popescu Marian

DIY wattmeter with an Arduino -  it is difficult or sometimes even impossible to measure power and energy with ordinary multimeters.  To carry out such a measurement reliable and accurate, a special wattmeter is required.  Because these meters are very expensive, a cheaper solution is presented here as a DiY wattmeter based on a Arduino Nano board. __ Designed by Freddy Alferink

DIY Web Chat Hack -  Control home devices via the internet. __ Contact Jameco Electronics

Diy: Arduino Chatting -  Networking is the one of the most important mean of communication used to communicate with people who are connected to one.  Most of the available network communication modules in the market...__ Electronics Projects for You

Do It Yourself Portable Cell Phone Charger -  it seems that as cell phones become more sophisticated, their operating times become shorter and shorter.  if you are on the go all the time and have difficulty finding AC or DC outlets to charge your phone, you might consider this simple scheme. . . Circuit by Dave Johnson P.E.-August, 2009

Do-It-yourself couplers reduce cost -  Application Note__ MiniCircuits.com

Door chime Privacy Sentry ATtiny12 -  An ATtiny12 controller as a timer and some switching circuitry turns the doorbell off for 10 hours at the same time each day.   __ Designed by Dick Cappels

DS: 3 channel 8 bit EEPROM DAC with DS interface -  This device provides three channels of 8 bit pulse-width modulation.  Output pulse duty cycle ranges from 0 to 255/256 in 255 steps.  DACs may be loaded by the DS interface.  DAC values may also be copied into the on-chip EERPOM and then automatically be loaded into the DACs when power is applies, making it useful for automatic set up of circuits that do not contain microcontrollers.  This replaces more expensive EEPROM DACs and EEPROM pots in many applications, owing to its use of a small area high volume integrated circuit microcontroller.  Additionally, one page of 16 bytes of on-chip EEPROM storage is accessible via the DS interface.   __ Designed by Dick Cappels

DS: Clock/Calendar/Alarm with EEPROM-based interpreter & DS Interface -  This is the timekeeping test circuit.  it includes a one-transistor circuit to switch in the 5V power supply when present and drop back to the 3v battery the rest of the time.  That loop of blue wire-wrapping wire is a lariat used to quickly and easily pull the chip out of the socket during development without damage and without having to reach for the removal tool.   __ Designed by Dick Cappels

DS: Firmware based protocol for Low priority data transfer -  The DS protocol was designed to provide firmware-based bidirectional host-to-slave inter processor communications for situations in which no hardware solution is available and the host and/or the slave in incapable of tending the interface in real time.  The only specialized hardware required is two bidirectional i/O ports on each chip (alternatively two input ports and two tri-statable output ports may be used).   __ Designed by Dick Cappels

DS: Test & Development tool for DS interface -  (Data transfer via handshake test tool) The DS protocol was designed to provide firmware-based bidirectional host-to-slave inter processor communications for situations in which no hardware solution is available and the host and/or the slave in incapable of tending the interface in real time.  The only specialized hardware required is two bidirectional i/O ports on each chip(alternatively two input ports and two tri-statable output ports may be used.  in other words, it provides some of the functionality of the Two-Wire-interface(TWi, or i2C as named by Philips) where an actual TWi is not feasible in either hardware or firmware.   __ Designed by Dick Cappels

DTMF Tone Decoder -  hears touch tones and displays them as telephone numbers __ Designed by Bob Blick

Dual Fan Controller -  A birthday present gone too far.  An overengineered temperature-based automatic twin fan controller with brass face to keep a kitchen PC cool.    __ Contact David Cook

Dual Mode Superhet/Direct Conversion AM receiver for 181.818 kHz Lowfer ATtiny2313, AT90S2313 -  This is a description of an experimental AM receiver for VLF.  it is crystal controlled to receive 181.818 kHz (more or less) and operates as either a single conversion superhetrodyne or a direct conversion receiver.  The bandwidths are expected __ Designed by Dick Cappels

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Electronic Construction Projects: 
#'s - B         C - D         E - G        H - K         L - P         Q - S         T - Z

 


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