HID USB Demo Oshonsoft & VB5 Terminal
hi, Demo for Oshonsoft HID USB with a VB5 PC Terminal Download and unzip, includes the VB5 source code and other files. The Demo requires the Visual Basic 5 run time files to be installed in the...
View ArticlePhysical Standards and Conventions
There are accepted standards in this world. This goes directly to the definition of, "convention". A convention is an agreement among people such that, "This will be what we mean when we refer to...
View Articlemaking a transformerless Joule Thief circuit
...on breadboard! Also I added another circuit to blink a LED just by exploiting CE breakdown of a transistor. It does work but needs considerably high voltage. All together, this LED blink circuit is...
View ArticleYet another Joule Thief
I like these circuits somehow, and build new ones regularily. Also I have 3 component kits on offer already, a new one coming up soon, with a moderate to high grade of difficulty. This time, you have...
View ArticleClik here to view.
Long Clock Prototype
I can't believe that it has been exactly one year since I last posted on my 10000 Year Clock. Well I finally got the low power LCD and put together a prototype of the clock. So progress is being made....
View ArticleMurata Micro Blower Drive with Auto-Tune
I just discovered this part recently, they are quite interesting and I can imagine all kinds of neat applications for this device. The principle of operation is very similar to a piezoelectric beeper,...
View ArticleIR Rememberizer- IR Remote Control Recorder/Player
Modern LCD TVs often have built-in media players which make them great candidates for stand-alone media art players, the main problem is how do you make the TV play the media file on power-up? Most...
View ArticleClik here to view.
Home Automation (HVAC)
Originally posted on ETO though I would share with AAC too. Home Automation controlling the HVAC system​The intention for building this system was to compliment the retrofit of the heating system for...
View ArticleClik here to view.
tutorial all transistor light bar graph build
I will put the schematic at the very top and bottom to make it easy to navigate to when reading through the tutorial from top to bottom of the page. also a short video of this circuit is shown at the...
View ArticleLong Clock Prototype, part II
Clock synchronization to the midday sun Synchronization to the midday sun is turning out to be an excellent exercise in engineering design. Here are the three steps: 1) Begin with a concept, theory and...
View ArticleClik here to view.
and again...a Joule Thief!
This time I use a small SMPS Transformer, you can also buy a kit for this circuit, including battery holder, a battery, LEDs, a transformer, a proto board, and all required components. you can find it...
View ArticlePIC Based Quadrature Signal Gen & 2 Phase Non overlapping Clock
hi, The circuit is designed for a 12F683 PIC, it outputs QA and QB [ quadrature signals] also two other pins output a 2 Phase non overlapping clock pulses. The purpose of the project is to be able to...
View ArticleFan Laws
A recent comment prompts me to list the basic fan laws here. For a given change in RPM, CFM2/CFM1 = RPM2/RPM1 Static pressure 2/ Static Pressure 1 = (Rpm2/ RPM1)^2 Horsepower 2/ Horsepower 1 =...
View Articlefloor annoucement
hi every one, i want to make the simple circuit for automatic floor announcement in elevator project complete description is given below the lift is of 9 floors,when 1st floor comes,the announcement...
View ArticleNight Detector
I did this some time in the 1980's. Originally intended as a flashing light controller for advertising, and run on batteries charged from a solar cell. It is supposed to be a night detector that is...
View ArticleClik here to view.
tutorial design :a sensitive change in light, detector
This is a tutorial to build a transistorized light detector, it is assumed that a person choosing to build this circuit, has a basic understanding of electronics fundamentals, and are familiar with the...
View ArticleBoolean Logic - Working with Consensus Terms
In this blog entry we'll be looking at consensus terms in Boolean logic. What they are, what they tell us, why they are useful, and how to work with them. Although some of these concepts lend...
View Articlevideo series on building logic circuits using transistors
Hi everyone, as you know I like to share this transistor circuit design stuff with people who are interested in this at a basic level. As I am not a professional in this by only a hobbyist, however I...
View Articlesneak preview of 4 flip flop circuits running as a binary counter
Hello, Here is a sneak preview, of the set up of four master slave data registers, for this series of videos I'm doing demonstrating the design and build of these kind of circuits. In this video the...
View ArticleTransistor Binary counter conclusion of series part 1
This is the conclusion of the Master slave flip flop build project, using all discreet components, this video demonstrates the ability for these type of registers to be couple together in such a way...
View Article