Electronics Projects

Electronics, circuit design and communication networks might seem complex at first but, taken in small steps, they are easy and fun topics to explore! So, if you are an engineering student or a hobbiest I hope you will have some fun here.

Your input is always welcome. Send me an email at rmckeon4@cableone.net
100: Fun Stuff for the Electronics Hobbyist
This section has some fun projects, some lightharted insights, and some challenges for the electronics hobbyist. Send me your favorite projects and your thoughts at rmckeon4@cableone.net and I will publish them here.

Let's have some fun sharng our enjoyment of this wonderful hobby!

Don't Keep Bad Parts!
If you have paid good money for some parts but they seem to be of questionable quality, just throw them out! You will be glad you did.
200: Oldies But Goodies
This section is devoted to some of my early projects and the interesting ways things were done "back then." Today these things are considered pretty simplistic, but "back then" it was cutting edge stuff! So, join me on a nostalgic journey to the early days of digital electronics.

Product Design: How We Did It in the Old Days

Now, there were ʺolder daysʺ than this when we wrote machine language code by hand on coding sheets, but by 1992 we had assembler software and EEPROM burners that connected directly to
the PC. Major improvement! Hereʹs how product development went in those days. Click HERE

Foucault Tester with Digital Readout

If you were an Amateur Telescope Maker (ATM) back in 1977 you know that polishing and figuring the mirror was a major challenge. I was an electrical engineering student back then and wanted to simplify the process of figuring a mirror. A major help would be to have a digital readout on your knife edge tester, so I designed this digital micrometer. The design was published in Sky and Telescope magazine and later I was asked to make one for the Michelson-Morley Interferometer at the Palomar Observatory. Sky and Telescope Article

The On/OFF Switch

Remember when the ON/OFF switch actually turned things ON or OFF? The ON/OFF switch used to physically supply power or remove power from a machine.

Today the idea of "warm up" has been replaced with "boot up." Here's an interesting bit of history about the way things used to be done. For this interesting article click HERE.
300: Basics: Components, Logic and Circuit Design
Logic Diagrams

Here is a nice summary of the basic logic diagrams.
Basic Logic Diagrams
400: The Challenge: Design Something