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Since 2015, major edits to this website contain:

💡︎ Lighting

LED lights are awesome — an amazing transformative technology:

Just be very careful to buy the exact light source you want . . .

Carefully choose the color temperature for your use:

Or to list it another way:

Or see for yourself at a friend's house, or lighting or hardware store with excellent displays (I find Lowe's has a better selection of lighting and PPE v. Home Depot).

Get your lamp brighter — measured in lumens — than your existing fixtures.  You will like it.

Spend the extra $2 each and get them dimmable.  If you later decide your lights are too bright, you can correct by installing a modern $25 LED-compatible "C-L" dimmer switch.

For my laundry/work/storage room project, I took care of each of these issues by replacing humming florescent tube fixtures with new LED lamps, each with its own with onboard motion sensor, changeable color temperature (I like one step 2 from red to blue) and brightness (I like all the way up).  Pretty inexpensive, too.  Better light, no more hum, and no more light switch — replaced with a blank switchplate cover!

Get a lamp that gives light in a good angle:

If getting a "recessed" "can light" "downlight" retrofit insert, consider whether you need a gimbal "rotatable" "eyeball" to illuminate your subjects.  (An "E26 adapter" means it connects electrically into your can's existing standard lightbulb E26 or E27 base.)

If your LED light comes with a Color Rendering Index CRI, get it High 90+ — so it doesn't mess with your ability to see color.

Best wishes for success with your project!

📱︎💻︎ Computer use (and programming)

📱︎💻︎ Computer use for ordinary
and tech-savvy 👥︎ computer users

📱︎💻︎ Computer programming for
ordinary 👥︎ computer programmers

📱︎💻︎ Computer programming advanced topics:
safety-critical, ✈ aviation, 🏭︎ industrial-quality, 🕵 internals, build, install

📱︎💻︎ Computer programming for ordinary 👥︎ computer programmers

Any useful code must be modified.

    — Eric's first law, first described by me, as far as I know.

📱︎💻︎ Computer and programming tools (.doc)

Leave something for Release 1.1.

    — Eric's second law, until I get better attribution.

CSharp C# programming, under 💻︎ Visual Studio .NET (.doc)
Java programming (including ▯ Android), under 💻︎ Eclipse or Android Studio (.pdf)

Any computer development project takes longer and costs more.

    — saying at Smiths/GE.

Apache web server, MySQL database, and PHP http scripting language (.doc)
VBA Visual Basic for Applications programming, under 💻︎ Microsoft Excel (.doc)

👩︎👩︎👩︎👩︎👩︎👩︎👩︎👩︎👩︎ Nine women can't make a 🚼︎ baby in one month.

    — saying at Smiths/GE.

Personal topics

🌏︎ On spaceship earth, we are not passengers — we are 👥︎ crew.

    — Marshal McLuhan, slightly reworded by me.

If you are scheduled to do something hard, and you yet don't feel ready:
◦ Prepare.  Hard.  Over-prepare.
◦ Center yourself, using whatever works for you:  exercise hard, yoga, long walk, play your favorite instrument, whatever.
◦ If you are reasonably-young or -urban, listen to Eminem's Lose Yourself a few times.
◦ Eat a good dinner.
◦ Get a great night's sleep.
◦ Get your game face on.
◦ You are ready.  You own it!
◦ And if it still doesn't feel right . . .
  Fake it until you make it!

    — various sources, some me, 2018-03-26.

 VOTE, in your next election!

When stopped by the police:


Test like you fly;  fly like you test.            — The way I learned it writing aviation software.
Train like you fight;  fight like you train.  — The way I heard some of our customers learned it.
Plan your work;  work the plan.                — The way I learned it in chainsaw safety training.
Fail early, and pivot.                                  — The way I heard it in entrepreneur startup seminars.

How to prepare and show 🌄︎ presentations (for 👥︎ people who do this sporadically) (.pdf)

Just keep swimming.  Just keep swimming.  Just keep swimming, swimming, swimming.  What do we do?  We swim, swim.

    — Dory.

Don't let perfect be the enemy of the good.

    — aphorism commonly attributed to Voltaire, slightly reworded by me.

If you have identified a near-optimum solution, it may be OK to implement this one, instead of continuing the search for the optimum solution.

    — not sure I've ever heard it said this way, said by me for years, recorded 2018-06-30.  Understood instinctively by single parents.

It gets better!

    — I first heard this used by people trying to reduce death by suicide in gay teens.  Later, I found it applicable for all young people, and anyone trying to find there way in this world.  True.  Partly because you get better at solving problems.  Partly because you meet more people who can help you out, know that one nugget of information that you need right now, and so on.  Partly because you slowly acquire more assets to help you along the way.  It may not look that way now, but if you can avoid dying, I've found it generally does get better!

Eric Piehl resume (.pdf)   Eric Piehl resume (.doc)   Eric Piehl LinkedIn

Not knowing something is fine.
Not wanting to know or refusing to know something is the problem.


    — Eric's third law, first described by me, as far as I know.

old 🏠︎ home page (under 🚧 reconstruction)

If you don't ask, the answer's No.

    — MM, about 1998.

I have other articles, not for public use.  Some articles are just for me.  But a few articles may be in the of this page;  if you are a on how to access it.