Hobby Projects - Insulation tester, LED Circuits, Meters.

Saturday, November 05, 2016

SmartWindow with Economy Dust Frame

Windows and Ventilators can have a Dust Frame or Solid Curtain. This can be fixed to windows like the Venetian Blinds but have to be leak proof on on the four sides. Mainly for Tropical and Equatorial Climates or Dusty areas near Roads etc.

SmartWindow with Economy Dust Frame

Theory Points of Study

Layer-1 - Blocks most reptiles and Insects. Mosquitos to Fruit Flies. Aperture of Grid 1 sq mm. Material Aluminum.

Layer-2 - Another Layer similar to above, but facing the Outside Garden/Road. Aluminum Mesh 5 sq mm holes, resist Big Rats and others. It is thick and strong. Prevent Small Animals, Birds too.

The layers are as large as windows and are separated by 5-10mm by 12 nylon spacers. These may have small pins fixed in the gap in many places for "Action of Points" .

Electronics -

Layer-1 is anode, Layer-2 is cathode. Very High Voltage of Very Low Current, ionize air and coagulate dust, smells, pollen and other floating colloids. The plates when touched by Humans cannot cause any harm. Current less that 100 microamps. This ionizer powered by an isolated 24V adapter, draws very low power so it can be kept on all the times

Gaurd Layers -

Finger Gaurd layers on either side made of a decorative design with apertures smaller than fingers made of Environment Resistant Plastic or Epoxy. The layers are as large as the windows and can be the aesthetic part.

Solar Air Cleaner and Humidifier ACH Option

This is a Solar energy based Air Cleaner and Humidifier that covers 1/4 of the window like a Box-Slab at the Top of Window. It is optional and an addon internal module to the DustFrame.

The Solar Panel is as wide as window and fitted on top of windows at an angle outside. The length can be around 6 inches or less. The ACH fitted inside is 1/4th or less the height of window. The rest of window 3/4 is open for fresh air but the air is cleaned by ionizer frame like in explanation above.

Hobby Projects - Insulation tester, LED Circuits, Meters.

The 1/4 ACH is a Box 6 inches deep on the inside, it is sealed but with a place to pour or guide water thru a mini water pipe, like the tubes used in Intravenous Systems used in hospitals.

The water collects at bottom of the box and drawn upward by a capillary action by an array of cotton wicks in matrix formation. The wicks grow from the floor of box to top.

Tiny row of low power fans powered by solar and rechargeable battery, draw air thru the ionizer layer and blows on the wicks array. The air exiting from this box is cool, clean and recharged with some humidity. it could also be one fan with long vertical geared turbine barrel plastic fin too, this sucks the air and blows on the wet wicks.

This system reduces dust, toxic colloids and allergy causants. It also prevents mosquito, flies, rodents and other small pests. It recharges the air with some humidity that keeps the room healthy and fresh. It consumes very low power and can be run on solar energy. The wet wicks also add a bit of cooling if the air is too warm.

San - 2012

Thursday, November 03, 2016

Thermoelectric Breakthrough can Replace IC Engines

IC Engines or Internal Combustion Engines are used in all types of Motor Vehicles. They convert Organic Fuel to Motion by tiny combustive explosions in a Cylinder-Piston arrangement. The use of Electricity here is only the spark for ignition.

Revolutionary Balloon Anti-gravity Car

Balloon Antigravity Car

These have a very low efficiency analogous to the Incandescent Tungsten Filament Bulb, The traditional bulb is being replaced by the emerging Energy Efficient LED Lighting Technology.

If we can convert Ethanol Fuel to heat by combustion, that is easy. Then the entire heat is absorbed by Thermoelectric Cell Arrays, like the Solar Cells absorb The radiation from the sun. The EMF from the Thermoelectric Cell Array can be a cascaded to generate enough electricity to charge the Rechargeable Batteries in an Electric Vehicle.

The most important thing is ..... The Material/Compound that can give a good Heat to Electricity Conversion, has still not been discovered. This has be as good as a Solar Cell.

Power Electronics - SMPS, Regulated Supply, SSR.
Some Breakthrough in Semiconductor Physics, Nanotechnology, Material Science or Electrochemistry by the Scientists in Fundamental Research and Applied Science, can make the Internal Combustion Engine Obsolete.

Thermal Electricity can also make possible, 'on the fly' Electricity from anything that can burn. Coal, wood, twigs, dried leaves, biogas, ethanol can fire Mini Thermal Engines; that make Heat into Electricity to drive Electric Motors backed up by supercaps or rechargeable batteries.

The only other way is to offset gravity as shown in the right, this was a graphic i made in 1999 for a poem on my website.

delabs - 2006

Tuesday, November 01, 2016

Automobile Ideas from 2002

Some things i had written online around 2002 on cars.

Cars can have multiple skins like Winamp

If you use organic flexible LEDs, encapsulated in transparent poly-sulphone or some silicones. And the RGB triad matrix of LEDs are driven by a computer system to make it work like a flexible LCD screen. It can be used to form a skin for a car. Only there will be no high resolution, but it will do.

This flexible layer is fixed on the car like a permanent cap. Now with the onboard graphics synthesis embedded car computer you can choose any jpg, png or gif textured tile or make your own. Then output the tile or wallpaper to the car exterior LED matrix skin. Now the Car has become skinnable. Not just colors but fine textures are possible.

Automobile Ideas from 2002

Now with a Bluetooth enabled Human Mood Monitor plugin you can make the car exterior to reflect the mood of the life-forms inside. This will make a road alive and traffic jams very colorful.

Simple Automobile Safety Radar

There must be a very affordable automobile radar with just a 10-20 feet radius around the vehicle. This should display as a graphic on the dashboard as some of the very old 2D car games. This radar must be based on sonar or infra red to avoid additional EMI-RFI pollution and confusion. The display should show all objects which include people, small animals, kerb and wall.

Microcontroller - 8051, 8052, OpCodes, Analog Interface.
The sensor has to be a multiple sensor, static belt one near wheels and one at the roof of automobile. The display device on car should be TCP-IP so that you can monitor your vehicle with your cellphone, PDA or any browser.

(:->)----\--/----< Man Sleeping

Saturday, October 08, 2016

Copper Clad Glass Epoxy Wall Panels

We can by Photo-lithography, Laser, Milling, Etching make Intricate Designs on a Single Side Copper Clad Glass Epoxy Board. After that we Multi-Mask the copper side with Translucent Synthetic Lacquer of different shades. Prepare the wall with an epoxy coating and Stick 1 Square Feet panels with tiny rivets or screws. Larger that 1 square feet may cause warp stress, need big screws.

Electrical Diagrams - Control Panels, Reference Tables.

Copper Clad Glass Epoxy Wall Panels

You can also do something that is Geeen. Buy up Surplus Electronics PCBs Old and New with or without Components. After epoxy coating the walls, Fix a thin waterproof hardboard on the wall. Then screw these PCBs as Wall panels, after you have washed, dried and lacquered them.

Thursday, October 06, 2016

Electronic Solar Umbrella

There are places like your Backyard, outdoors, a village... where your Gadgets will stop working !!!

You will feel suffocated when your Smartphone or Tablet fails to respond to your caring strokes. Your Dupey is perishing due to Undernourishment. All you need is "Electronic Solar Umbrella" which was invented by me delabs on June 1st 2014.

Electronic Solar Umbrella

The Red Light is for Data Networking SmartUmbrellas using Advanced Multi-Threaded Infra Red Technology.

SUN - Smart Umbrella Networking

Resources - Electronic Firms and Electronic Projects.

I just invented the SmartUmbrella - My Drone is Rushing to the Patent Office. Keep this confidential till my drone returns safely, the beagle boys are using Blimps with Large Magnets to capture Drones.

Another model with an ability to charge Notebooks, Netbooks would be good. If i am allowed to stretch my imagination …..A Networked Model with an embedded Wi-Fi Repeater, which will just connect with other Home Products which have embedded Wi-Fi Repeaters. These form an endless wireless Daisy Chain of Gadgets in the Neighborhood. When a couple of these gadgets are connected to Internet and Mains Power, the whole chain goes online. The Lamps can also double up as flash media servers.

Just like 3G, 4G, 5G in the end will become WiG. A Hybrid WiFi authenticated by 5G technology. WiFi using a Chain of HotSpots on the ground is better than AnyG or nG Towers. If everyone watches HD Youtube Videos at the same time, the towers will come crashing. Wireless Optics are even better, better than anything, for large data transfers in homes, offices.

Hence with Wi-Fi chain and Tablets you got Web at low power. Web means PDF and HTML = Knowledge Data and Power. This power must be a low energy burden.

A Mini Solar Station and 24V Green 100W Bus in the Home can Power the Wi-Fi and Lamps. Recharge the tablets and keep working and learning. This is the worst case scene when we have energy shortage.

The Long term solution for Energy is Solar, Wind and Most important Ethyl Alcohol employed in the proper way to power Mini Generators and Automobiles.

Sunday, October 02, 2016

Adventures of Earl Muntz and his TV

A History of TV is not Complete till you Learn about the Adventures of Earl Muntz. How he cut cost to Promote his TV Sets by Incremental Pruning of Parts from a Working unit.

Adventures of Earl Muntz and his TV

What is important to learn from it though, is that we should not overdesign or underdesign. We need to design a cost effective product within customer budget. More Bells and Whistles in yet another Model. A Model to cater to every Purse. And a BareBones model for those who just can barely afford it.

History of Muntzing

Muntz Story

"He took a trip to New York City, checked into the Warwick Hotel and ordered three television sets delivered to his room: an RCA, a Philco and a Dumont. He turned all three televisions to the same channel and began pulling tubes from each one by one. When he pulled one tube too many from a set and the picture went black, he would make a note. Then, he put all the tubes back, changed the channel to another of the four television stations operating in New York City and repeated the test."

Sunday, August 14, 2016

The Philbrick Archive - Bob Pease and The OpAmp

This site is a free non-profit repository of materials from GAP/R George A Philbrick Researches, the company that launched the commercial use of the Operational Amplifier in 1952.

The Philbrick Archive and Operational Amplifier

The Philbrick Archive - Bob Pease and The OpAmp

The first commercial Operational amplifier was the K2-W op-amp. It was based on the amplifier used in the Philbrick modular Analog-Computor "black boxes ".

First Opamp K2-W op-amp

That amplifier's basic circuit architecture, in turn, was probably inspired by an earlier amplifier designed by Loebe Julie (Dan Sheingold and Bob Pease, thanks for helping me with this information). The K2-W Operational Amplifier entered the commercial market in 1952.

Wednesday, August 10, 2016

Android Hardware Development Kit

The Android Hardware Development Kit is designed for enterprise embedded developers looking for a single, all-inclusive solution for a variety of prototyping needs.

Android Hardware Development Kit

Android Hardware Development Kit is the first Open Hardware solution designed for full hardware customization. Together it is a Open System Design Solution.

Android Hardware Development Kit
Runs with a 720MHz ARM-based, open source BeagleBoard C4

Some Features are
  • Display: 4.3 inch touch display
  • Screen: 480×272 OLED screen
  • RAM: 128MB
  • 32bit Single Core
  • SD Storage: 4GB SD Storage
  • On Board Flash: 256MB
  • 4 USB Host Port Adapter
  • Wi-Fi 802.11b/g
  • Ethernet (RJ-45) USB 2.0 10/100 Ethernet Adapter
  • Video Output: DVI to HDMI
  • Video Output: S-Video
  • Speaker (Stereo Headphone Out): 3.5mm Audio Out

Monday, August 08, 2016

Mouser Electronics - Electronic Components

Mouser Electronics, Inc. is an electronic component distributor, focused on the rapid introduction of new products and technologies to electronic design engineers. Mouser.com features over 850,000 products online from more than 330 manufacturers.

Mouser Electronics - Electronic Components

You can procure components like Optoelectronics, LED Lighting, Semiconductors, Discrete Semiconductors and ICs. They also offer Development Tools useful for the R&D Lab. You can even get Test & Measurement Instruments and also Some Tools for Electronics Manufacturing.

Designing a Tricorder BoosterPack

"The combination of affordable electronics design tools (e.g. Mouser's MultiSIM Blue), open source software licensing, desktop manufacturing equipment (e.g. 3D printers and CNC machines, and PCB manufacturing services (e.g. PCB Assembly Express) that cater to small volume productions are making the niche product design affordable and easier than ever before."

Analyzing the Possibilities: Designing a Tricorder BoosterPack

In the world of Star Trek, Captain Kirk and crew have access to an incredible assortment of 23rd century technology to help them on their missions. The Communicator, the Phaser, and of course, the Tricorder. For the uninitiated, the Tricorder is jack-of-all-trades device that allows a crew member to scan their surroundings to acquire information on just about every environmental variable possible.

Mouser Electronics
1000 N. Main Street Mansfield, TX 76063, USA

Monday, July 11, 2016

Electronic Hobby Projects - Chemelec

This is one of the oldest Electronics DIY Project Sites in the Internet. I now discovered he has a dedicated domain too. Gary from Canada has many useful schematics and even provides kits and parts.

Electronic Hobby Projects - Chemelec

Some projects that may ring bells in your DIY Brain
  • A 10 Watt RMS Amplifier
  • A Solar or Wind Charger/Dump Circuit
  • A Cat or Dog Detector
  • Inverter, 12 volt unit, Mos-Fet design
  • A 25 LED Chaser". (Sequencer)
  • A Metal Detector, for Pin Pointing.
  • Watt Meter", Measures True RMS Watts
  • Pulse Induction Metal Detector
A Mos-Fet Power Inverter

A Mos-Fet Power Inverter

This circuit will provide a very stable "Square Wave" Output Voltage. Output Frequency is Adjustable and Stable. Can be used to deliver a wide range of output voltages by using appropriate turns ratio. Additional MosFets can be paralleled for higher power.

Sunday, July 10, 2016

Peter H. Anderson - Embedded Processor Control

This is a very useful computer interfacing resource for instrumentation. PC Parallel Port, Use of a PC Printer Port for Control and Data Acquisition, Serial Control and Measurement. Many Microchip PIC Type projects.

Peter H. Anderson - Embedded Processor Control

This is a combination of LCD PIC, an assembled printed circuit board from ModernDevice.com, a 20X4 LCD with Blue / White backlight and interfacing connector. - The Arduino Processor

Peter H. Anderson - Embedded Processor Control

Assembled Serial LCD with Blue LCD

Also - 68HC11 Assembly Language ProgrammingParallel Port Interfacing with 2, 3 and 4 Wire Serial Devices.  BasicX, BASIC Stamp.

Wednesday, July 06, 2016

Elektronik und Mikrocontroller - Burkhard Kainka

Author of books and CDs, Microcontroller, interface programming or new ideas for hobby projects. The Electronics Fundamentals for hobby and education helps the beginner with valuable information.

The electronic logbook is amazing, you can have a look at so many circuits and projects with photos. You will learn many things and make you develop skills.

Elektronik und Mikrocontroller - Burkhard Kainka

For the advanced Hobbyist there are projects on Microcontroller and Measuring and control devices with the USB and PC Interfacing,

Burkhard Kainka - SDR Radio

SDR Radio with USB

Electronics experiments for children - "For children it is easier than for adults. Since it is enough, if someone applied sufficient time and a little tinkering with them. Often all it takes is a little push to arouse interest and skills."

Monday, June 13, 2016

Bill O’Donnell – Tech Gizmo Builder

These are high tech jigs, fixtures and instrumentation/automation gizmos that bill built. Electrical gizmo builder for the UNLV Physics Dept.

Bill O'Donnell - Tech Gizmo Builder

These projects are advanced and not for a beginner student or newbie hobbyists. These pages are knowledgable and will help students and DIY enthusiasts understand more about Lasers, Precision Temperature Control and stepper motors among other things.

Bill O’Donnell – Tech Gizmo Builder

Auto Fill Circuit for Laser Cooling Loop - Ethernet Data Logging

Here is an automation solution with a ethernet usage. The code and diagrams are also there. This is something that covers many aspects of engineering in one project. Try such things out to learn, only after you have mastered the basics.

"The Ethernet connection is based on an XPORT form Lantronics. Basically it lets you use a serial port to send things over Ethernet. A PIC microcontroller with an A/D converter digitizes the pressure, the pressure set point, the high and low pressure alarm points and the supply voltage (since everything is ratio-metric). "

Saturday, June 04, 2016

Instant Embedded client - Tuxgraphics

An embedded client that works almost everywhere and all you have to do is: connect it to the network and power it on.

Instant Embedded client - Tuxgraphics

"The idea for a network client that reports data to a server was born a while ago when a marketing company contacted me. They wanted to display water and air temperatures live on their homepage."

Instant Embedded client - Tuxgraphics

The embedded client system uses a DHCP client to obtain an IP address and other network parameters such as gateway address and the netmask from your DSL-router or Cable-router. This process is totally automatic and happens as soon as board is powered on.

The board uploads then periodically measurements to a server in the internet (aka server in the cloud). When you purchase an embedded client board pre-loaded with software then the access to the data receiving server is included. 

From - Tuxgraphics.org

Friday, June 03, 2016

Low Cost AM FM Stereo Receiver

This was a National Semiconductor Application Note, now TI. - Low Cost IC Stereo Receiver.

AN-147 Low Cost IC Stereo Receiver

Some Highlights

The LM3089 FM IF System does all the major functions necessary for FM processing, including a three stage amplifier/limiter and balanced product detector, as well as an audio preamplifier.

FM stereo demodulation is accomplished by the use of the LM1800 phase locked loop, thereby eliminating the need for external coils.

The AM function of the receiver is done completely with the LM3820 AM radio system. While designed for 3 section tuned superheterodyne application.

The LM382 dual preamplifier was selected for its minimum parts count and low noise capability.

Panel meters are employed in the FM system for both signal strength and center tuning, allowing for easy and accurate tuning. A directly driven LED offers immediate indication of FM stereo reception.

Low Cost AM FM Stereo Receiver

A single transistor tone control circuit was designed as the optimum cost/performance trade-off. The transistor is configured in a shunt-shunt feedback design, allowing gain variations between input functions.

The stereo power section, consisting of the LM378 dual audio amplifier, delivers 3W/channel with total harmonic distortion (THD) less than 1% and 4W/channel with THD less than 10%,

Sunday, May 08, 2016

Music Sound to light converter

This was made by me when i was a kid, it was even published in a magazine, i think it will work, it was used on a very old huge ornamental valve philips stereo system in the remote speakers.

Recently i captured this circuit in eagle to publish online, it seems to have a small design error. It worked well for many years. The step-down transformer is used as a step-up here. The secondary winding was around 50mA so the resistance was protecting the 2N2222. (SL100 was used in the original one). C1 and R3 may need tweaking to get the desired adjustment range in R2.

Circuits using only discrete devices

Music Sound to light converter

The voltage across the speaker is fed to C1-Gnd, which blocks DC component. R1, R2, R3 form a threshold bias for T1. 2N2222 chops the 12V DC in tune with the music. The chopped DC current flowing in the 12V winding of TR1 is stepped up into AC pulses over 100V, this lights the Neon in flashes synchronizing in real-time with the beats. Known Issues - It does not perform well at low Bass like 20Hz.

Thursday, May 05, 2016

Tinkerlog of Alex – Embedded Experiments

Log about Alex's experiments with microcontrollers. Some nice embedded micro projects here Programmable LED, Synchronizing Fireflies, (Elektor), 64 pixel led display with animations.

Tinkerlog of Alex - Embedded Experiments

Faster prototyping. Easy to build, even for beginners. Comes with a 3 AA cell battery holder. Uses ATtiny2313V-10PU microcontroller.

Tiny2313 Proto Board

Tiny2313 Proto Board

"This Tiny2313 Proto Board is for all these one-off projects and prototypes. You want it more permanent than on a breadboard but don’t want make a custom PCB for it. The board comes with 10 components only and is really easy to solder."

Programmable LED How To

This is a tiny blinking device. The blinking sequence can be reprogrammed with the use of a flash light. It detects changes in lighting and records these changes and finally plays them back.

Tuesday, May 03, 2016

Build Your Own Microcontroller Projects

These pages created by Wichit Sirichote of  Department of Applied Physics, Faculty of Science, provides schematic and software for hobbyists to practice "learn by doing", build a simple microcontroller projects at home.

Build Your Own Microcontroller Projects

Some of the projects include - The 4 Channel Pt100 Thermometer, G5-Data Logger, Solar Recorder,    89S52 and PIC Project Board. Even circuits, code and SBC for the popular 8051 can be found here.

Build Your Own Microcontroller Projects

Dual Channel Digital Volt Meter

"I do remember the Intersil ICL7135 very clearly. This year 2011, almost 29 Years, the classic integrating type analog to digital converter is still interested. With a cheap price and easy interfacing, I think I will design a cheap digital volt meter with microcontroller to provide serial interface similar to the Fluke45. Two channels is good for scientific experiment."

Sunday, April 03, 2016

Alan Yates Laboratory – vk2zay

"I was born in the late 1970s, mid-year in the local hospital of a coastal part of Australia? Yet another instance of humanity, one of the 6.6 billion or so of us (4.2 billion back then). Doomed like all of us to live out their days on this rock with some clinging gases orbiting a minor star in a relatively quiet part of the local cosmic clump of matter." - Alan Yates

Alan Yates Laboratory - vk2zay

Alan Yates Laboratory – vk2zay

Reflection-pair optical tachometer - The circuit is simplicity itself. There is a red LED to illuminate the target and a photo diode in photo-conductive mode to pick up the reflected light.

One Transistor Voice Transceiver - Building a toy VHF phone transceiver for 3 metres using only one transistor for both TX and RX!

MK484 MW Receiver - A fairly small MK484 based receiver for the AM broadcast band.

40 Metre Spectrum Analyzer - My go at making a JF1OZL-style spectrum analyser for 40 metres.

Nano-Henry Inductance Meter - My implementation of Drew Diamond VK3XU's "Nano-L", plus how I constructed and trimmed my calibration inductances.

Engineering Calculators - Useful online calculators for the Hobby Enthusiast. Ham Radio People and also students and Engineers,

LED Dimming Lamp

Build it or go for a kit, this is a nice design for a Table or Desktop lamp. You will need to fix in a Enclosure with a Diffused Plastic or Glass Filter Front.

18 LED dimmable LED lamp

LED Dimming Lamp

This circuit is a dimmable white LED lamp array with 18 LEDs. The lamp brightness is regulated as long as the input voltage is above 10.5V. A low-dropout analog voltage regulator is used for a simple and relatively efficient design. The lamp produces enough light to use as a a reading lamp or a small work lamp

Saturday, April 02, 2016

Learn about the Eternal Torchlight

I  was enlightened about this Battery Less wonder. This is a boon for rural areas and an emergency tool which depend only on your will and your tendons. I found this bright flash of information when i was looking for supercap vendors.

Learn about Supercaps, dynamo and White LED

Richard J. Nelson on the LED Forever Flashlight. - The future of low power lighting is in the use of the Light Emitting Diode, LED. Sooner or later you will buy one or more LED lights or lamps. The two primary advantages of an LED light source is it's efficient light generation (exceeding that of fluorescent lamps) and long life, typically 100,000 hours. That is 50 to 100 times more life than most of the bulbs in your house.

Learn about the Eternal Torchlight

This is a Linear Dynamo LED Torch which uses a SuperCapacitor to store the energy. Easy to repair and maintain if necessary.

It uses no batteries and requires only the single LED included. You can even leave the flashlight unused in your car's glove box for years and you'll always get that all-important light when you need it most. Forever Flashlight lll pays for itself quickly by saving you the cost of batteries and bulbs.

Friday, March 11, 2016

Electrician Tool – Continuity Tester

I had gone to buy some long wires at a electrician shop, when a terminal box had to be tested, he used a continuity tester.

Continuity Tester
When i used to buy electrical parts in the past, they used a tester box, made of wood. This had a bulb and a tubelight starter and two long wires (230v AC). The Continuity tester would light up a 40w lamp. Now he had a LED based one, so i got one for myself.

All it had, was two small cells in a plastic box with a LED, i was just flashing the LED as it looked nice thru the transparent box, it failed. The LED had burnt, the battery used. This product was not for monkeying around.

Now i performed a tiny design upgrade, I used a extra-bright 3mm Red LED with a 47 ohm resistor. Now it is robust, at least for continuity. The battery life can be good only if you make quick checks.

Improvements -

More protection may be needed to avoid damage to LED when this tester is applied across a battery by mistake. LED can flash to save battery power, one SMD - LM339 can be used for flashing and a more efficient short-leakage detector. A small oscillator with a neon may be more efficient and bright. This can also double up as a hidden Live wire or Mains AC detector.

Continuity Tester Circuit

A single chip metal detector with a range of a few inches. This is useful for detecting nails or screws in walls and floors, or for locating buried mains cable.

Tuesday, March 08, 2016

CodeShield for Arduino - Diyode

The Diyode Codeshield is an arduino shield (add-on board) designed to make the process of learning (and, more importantly, teaching) arduino much more engaging and accessible.

CodeShield for Arduino - Diyode

The Diyode CodeShield was developed to make the process of learning code, specifically arduino code, much more intuitive and engaging. The idea is simple: put all the common inputs and outputs on a single board......

CodeShield for Arduino - Diyode

The Diyode Code Shield has:

Inputs: switch, button, potentiometer, rotary encoder, thermistor, photocell, and hall effect sensor.

Outputs: Piezo buzzer, servo motor, RGB LED, LED, and a relay with screw terminals.

"The Codeshield is a product of the Diyode Community Workshop. Diyode is a non-profit organization in Guelph, Ontario. Our mandate is to support, evangelize and teach DIY, focusing on woodworking, metal working and electronics."

Thursday, March 03, 2016

Switching regulator for 3.3V

Circuits with 3.3 volts: For small currents, a voltage regulator is sufficient. Greater efficiency can be achieved with a step-down switching regulator. This circuit proposal is loaded with good one ampere.



Switching regulator for 3.3V

"The switching regulator used works with an oscillator frequency of 52 kHz, the efficiency is mentioned in the data sheet with 80%. The manufacturer guarantees the accuracy of the output voltage of 3% and lists other advantages as a protection against over-temperature and current limiting on. The switching regulator requires a storage inductor (coil) high quality."

Friday, February 05, 2016

Metal Detector Projects

Here are some Metal Detector Projects that are quite interesting for the purpose of education and experiments in the Art of electronics. This site may be as old as Y2K, but the url / domain may have changed.

Metal Detector Projects

If you are interested in the theory behind the mag I can highly recommend the book The Magnetics Measurement Handbook by J.M. Janicke. Besides a good coverage of magnetics theory, it contains much of what you need to build a useful fluxgate Magnetometer, plus other devices.

Traditional Geophysical instruments include ground-penetrating radar, earth resistivity meter, infrared, and sonar, to name a few. Currently, earth resistivity projects are the most practical for the do-it-yourselfer, although some people have been tinkering with side scan sonar.

Metal Detector Projects

Detection of Gold

Just the Jeohunter really works and directly detects Gold - see below screen. And even gold-worth 9-15cm diameter cannon-balls get detected as "Gold" (golden ring & cannonball analyses has identical values), but thats because of the huge metal mass and special shape - alot MDs have "problems" in such situation and perhaps only a magnetometer really works here. btw. there is no difference if you search with Ground Balance minus 200, zero or plus 200, the gold detection always remains the same.

Detection of Gold - Metal Detection

There are historical records of DIY Enthusiasts having created what is known as the "Donkey Kong Gold Hunter". This Gold Detector uses a Nintendo Unit after many Mods.

Thursday, February 04, 2016

Telegraph Key and Sounder

Get the Plan Drawings and Make your own Morse Key with a Sounder from J.E. Howell Model Engine Plans.

"The full size plans will allow you to make an exact replica of the key and sounder. The photo above is the "real thing" antique originals. The originals were made in a time when quality was of prime importance and esthetics ran a close second! These instruments were made of brass and steel,"

Western Electric Telegraph Key & Sounder

Telegraph Key and Sounder

--. .-. . . - .. -. --. ... / ..-. .-. --- -- / -.. . .-.. .- -... ...

Use Morse Code Translator to Unravel the Telegraphic Morse Message above.

Wednesday, February 03, 2016

Bill and Mark Sherman Make Robots

From Joule Thief Artbots to Picaxe Projects. Bill and Mark Sherman are Making Things that Move.

Some are Mood Beam Autopsy Make an artbot out of a Mood Beam toy. FireFly Project Make a "Jar of Fireflies" using a Picaxe Microcontroller.

Bill and Mark Sherman Make Robots - wayback copy

A two wheeled robot using foam and CDs for the wheels. Shown above is the Front View, Heat Sensor, IR avoidance module and Beeper. More projects are at The Botsmaker Blog.

Bill and Mark Sherman Make Robots

16F88 3-digit voltmeter

"I wanted to make a simple 3 digit voltmeter for mounting inside a power supply for troubleshooting purposes. Scouting around the internet, I couldn't find anything complete enough to make a meter. So I decided to make my own using Pic Pro basic to program a 16F88 PIC."

Friday, January 08, 2016

Sci.Electronics.Repair FAQ

Sci.Electronics.Repair Frequently Asked Question(s) (or S.E.R FAQ for short) Home Page. This site features Samuel M. Goldwasser's latest and greatest "Notes on the Troubleshooting and Repair of..." series of comprehensive repair guides for consumer electronics equipment and other household devices.

Technology Resource - Silicon Sam

There is also a great deal of other information of interest to the electronics hobbyist, experimenter, technician, engineer, and possibly even the dentist and poet. Included are the now quite comprehensive and massive "Sam's Laser FAQ".

Sam's Laser FAQ has a great deal of information on a variety of laser and optics related topics including a comprehensive treatment of diode, helium-neon, argon/krypton ion, and CO2 lasers as well as amateur laser construction including numerous examples of truly home-built lasers. Much of this is not available anywhere else either on-line or in print!

Home-Built Diode Pumped Solid State (DPSS) Laser

Home-Built Diode Pumped Solid State (DPSS) Laser

This generates green light at 532 nm which is not a bad shade of green and quite close to the eye's peak sensitivity. This is the approach used in modern green laser pointers and most modern DPSS green lasers. While other materials can be used to obtain other wavelengths (blue being the most common)

Thursday, January 07, 2016

ELM - Electronic Lives Mfg

"My hobby has been a present occupation as it is because I liked electronics relatings since I was little. Railroad, anime, comic and TV game as well. As for programming in the hobby, because they are electronic handicraft" - Chan Japan

ELM - Electronic Lives Mfg

ELM - Electronic Lives Mfg

Chan has many projects for learning the use of Microcontrollers. even Instruments. You can even study about how to develop a PC Interface for electronic design you made. Then there are pages on Audio and Video Processing. See the LED Lantern and the Capacitance Meter too.

DC Servomotor Controller

This is an experiment on the closed loop DC servomotor control system (SMC). It will able to be used for practical use with/without some modifications.

Desktop Line Following Robot

In lines of the Japanese Tradition of Miniaturization, chan has built a tiny line following robot which can run on the desk, A toy that is one fifth the size of the line following robots, seen these days,

Monday, January 04, 2016

LED Christmas tree - Learning Electronics

Letter from Chris of PyroElectro.com in 2013 - Happy Holidays!

Here's a project I know your readers will love! It's an all-digital-hardware LED Christmas tree we're calling the Christmas Tree O'Digital Logic.

The tree itself is composed of 64 LEDs built into a spiral sitting on a piece of protoboard. Underneath, the controller uses shift registers and a 555 timer to create two modes of display: a predictable pattern and a random pattern. This should light up any desk or shelf and bring merriment to your readers!

LED Christmas tree - Learning Electronics

We're also running a Kickstarter campaign to fund our second free online electronics course, "An Introduction To Digital Electronics." We have just 4 days left to raise $2,124. If you would be so kind as to spread the word about our efforts, we'd be extremely grateful!

To build the tree, we'll use 63 green LEDs and 1 red LED. Lots of wire will be needed to make the spiral + cone shape of LEDs from top to bottom. To build a random pulse generator, we'll use some digital logic trickery with a 7404 hex inverter. A 555 timer will be used to drive 8 shift registers, which will control all 64 of the LEDs. Finally, a 4 bit timer should be thrown into the circuit in case we want to slow things down with a divider.