LED warning lights?

[Steve Crewdog]

Originally Posted by BobTurner

Forgive me if I’m anal about units, but in this post you say ‘10’ and the previous post ‘10 ohms’. On the post quoted it says ‘10 k ohms’. 10k ohms is about the desired value (k=1000). 10 ohms is way too small.

EXCELLENT catch, Bob, I just checked and Yes, I told the gent at the store 10 ohms, he sold me 10 ohms, and I should have asked for 10k ohms. Lesson learned, and it ain't over yet. Many thanks!!!

Originally Posted by Charles Lindbergh

Accuracy means something to me. It’s vital to my sense of values. I’ve learned not to trust people who are inaccurate. Every aviator knows that if mechanics are inaccurate, aircraft crash. If pilots are inaccurate, they get lost — sometimes killed. In my profession life itself depends on accuracy.

Charles A. Lindbergh, The Spirit of St. Louis, 1953.

The bad part is the electronics store is only open M & W, already closed for the weekend. Oh well....

[Toobuilder]

I have wired in a resistor that's only active when the nav lights are switched on. Makes the indicator a "day/night" deal without doing the rheostat thing. It cuts brightness in half.

[rzbill]

I used a standard aviation "push to test" light assembly and replaced the T1-3/4 (330) incandescent bulb with an LED version. Wired the supply through the panel dimmer circuit running off a pot / lm317t with a diode in the right place to force full voltage supply only to this light when the nav lights and dimmer are off.

[Steve Crewdog]

Success last night. Bob was right, I plugged a 10k resistor (instead of a 10) into the circuit and it came out nice, brightness was just right on the ramp in daylight, tested it in the hangar with the door closed and they were just a bit brighter than I like for night flying, but I tend to like my night lights really dim, and under a full moon they'll probably be good. Gotta compromise, sometimes.


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[FinnFlyer]

Note that green LEDs need a lot less power than any other color for the same perceived intensity.

Finn

[Steve Crewdog]

Originally Posted by FinnFlyer

Note that green LEDs need a lot less power than any other color for the same perceived intensity.

Finn

So the others will be dimmer? (blue, red, orange)

[BobTurner]

Originally Posted by Steve Crewdog

So the others will be dimmer? (blue, red, orange)

Your eyes are more sensitive to green than red or blue. They also have tremendous dynamic range, you may not notice it.

[9GT]

For WARNING lights, I want flashing LED's to get my attention and used these from Del City, they are available in flashing red or amber: https://www.delcity.net/store/Pigtai...SABEgKVqvD_BwE
For standard LED indicator lights, I found these on Amazon. https://www.amazon.com/FICBOX-Indica...891925&sr=8-44 Both styles are miniature.

[Steve Crewdog]

Originally Posted by 9GT

For WARNING lights, I want flashing LED's to get my attention ...

Unless it was cancellable to a steady state or could be turned off, I'd be inclined to stay away from flashing warning/caution lights. Too much distraction after the problem is recognized/acted on/stabilized, especially at night. JMHO.

[9GT]

Originally Posted by Steve Crewdog

Unless it was cancellable to a steady state or could be turned off, I'd be inclined to stay away from flashing warning/caution lights. Too much distraction after the problem is recognized/acted on/stabilized, especially at night. JMHO.

Nah,,,,,I want my WARNING lights to flash. Its too easy to disregard a steady light. I have one for the canopy open and the other for low voltage. Lock the canopy and that light goes OFF. Reset the alternator breaker and that one goes OFF,,,,if not, turn the alternator OFF.