delabs dapj Tech News

TRS-80 Computer Whiz Kids - appeared in 1984. Eight issues in all are known to have been published, the last appearing in 1991.

Operational Amplifiers - With a few Op-Amps and a regulated Power supply, many Instrumentation and Process control equipment can be designed. The Human Brain understands Numbers, Quantity and it regulation very well ! On the right you can see a analog controller based on opamps and discrete devices. A Heater, Fan and Motor is regulated, controlled and timed for a process.

Analog Op-Amp Circuits

Analog is about numbers, the circuits can be understood and designed mathematically or empirically. Designing and Building a True RMS Rectifier with Op-Amps, will help a designer digest many Op-Amp capabilities.

Here is is gadget GUI for Industrial Process control, WebApps. The buttons make a sound and Light up internal LED lamps. Power On-Off control, Digital Timer; Start, Reset Scroll and Select are the controls.

An Image ScreenShot is above.

A Web Widget which is a Preset Timer. This can be Programmed from any Browser. It can also be modified to control external outputs. This project will only be a Web Gadget for Education, it will not have any external interface.

Live Gadget that can be Operated

I will first make some simple examples with this UI. Then i will try to interface the javascript with PHP-MYSQL Application. I am just Thinking Loud. This makes a Globally Distributed Process Control Possible. :~) . You can Use html-js-php-msql. You can use ajax-python-perl too.

Digital Timer Gadget Visual Interface

But for now, back to earth, I will just complete some more simple tutorial gadgets. This Idea of mine is Open Source, please keep it that way.

Dual Digital Dice Gadget - Click the Dice Cube, Wait, It will Display a Random Result, A random generation for rolling and one for showing value. Screenshot of Widget above.

Dual Digital Dice Cube, It will Display a Random Result for the 6 faces of the Dice, It has both a Cube Animation and Digital Readout for Two Dice.

Live Dice you can Operate

Dual Digital Dice Widget Cube, It will Display a Random Result for the 6 faces of the Dice. Electronics Dice gadgets can be built in the same way. The JavaScript for the Digital Readout is written in the way you would write code for a embedded system project. You can try it out on a Tiny chip. Do not use a Big Powerful and Fast Processor for a Small Job. It is like Transporting a bag of Potato Chips in a Nuclear Submarine across the Pacific Ocean.

The domain EEMetric.com is for sale. The domain is parked here for Display..

If you wish to buy, comment/feedback on this post with your offer.

Only domain is for sale, there is no content for sale. I am selling it to raise money to maintain my other websites.

The Website Domain will be promoted for Three Years after purchase. In other words, you buy the domain and create your website or blog; we will list it and advertise it in our network for Three years for Free.

(Options- If you want an Application, Blog or CMS setup for this domain. We can do it, fees will be according to the work involved.)

74HCT373 - High Speed CMOS Logic Octal Transparent Latches with 3-State Outputs. The 'HCT373 devices are octal transparent D-type latches. When the latch-enable (LE) input is high, the Q outputs follow the data (D) inputs. When LE is low, the Q outputs are latched at the logic levels of the D inputs.

Fun with Chemistry

The work of chemists is to study different kinds of matter, these and hundreds of thousands of other kinds too.

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First posted around 2006 in "Ideas of delabs" and enhanced later, something to ponder about.