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Knight Rider lights :)

Old 12-06-2018, 09:15 AM
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GaryPitts
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Default Knight Rider lights :)

Check out what my lights look like from the video cameras at work when I remote start my car. I go out and look at them are they're normal, constant on. I think it's cool. Wish they had made them this way


Last edited by GaryPitts; 12-06-2018 at 09:55 PM.
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Old 12-06-2018, 10:05 AM
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Video is unavailable
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Old 12-06-2018, 10:21 AM
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Yeap, video unavailable.
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Old 12-06-2018, 11:11 AM
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Gary, I think I know what you're saying. The lights appear to flicker very fast on the video. It was explained to me that it has to do with the way LED light operate. The light stream from an LED is not steady like the old style bulbs, the light stream actually flashes at a speed unnoticeable to the human eye. But, it can be picked up on video. Now mind you, this is what I heard. I'm old , and could have explained it wrong. But, I'm sure I'm close enough for you to understand what is going on.

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Old 12-06-2018, 11:23 AM
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YouTube sez - Vid nada available
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Old 12-06-2018, 12:15 PM
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Originally Posted by Rebel Yell View Post
Gary, I think I know what you're saying. The lights appear to flicker very fast on the video. It was explained to me that it has to do with the way LED light operate. The light stream from an LED is not steady like the old style bulbs, the light stream actually flashes at a speed unnoticeable to the human eye. But, it can be picked up on video. Now mind you, this is what I heard. I'm old , and could have explained it wrong. But, I'm sure I'm close enough for you to understand what is going on.
That is true. LED lights flicker on and off at a very rapid rate that is not typically picked up by the human eye, but can be seen in video with low frame rates. A frame rate of 60 fps means there are essentially 60 pictures per second that you are seeing that make up motion on a screen. Part of those 60 frames will capture the lights being on and part will capture the lights being off. When you play that back very quickly your eye sees it as flickering. As frame rate increases the blinking/flickering affect will decrease.

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Old 12-06-2018, 12:48 PM
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This is how brightness is controlled in LEDs. You cycle it on and off at an extremely high speed to make it appear more or less bright. Even if you don't necessarily need them to be dimmed, you can still cycle them below their "fully on" threshold to help extend the lifespan of the unit.
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Old 12-06-2018, 01:08 PM
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Can you at least make the video available?
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Old 12-06-2018, 04:49 PM
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Originally Posted by Matthewstorm View Post
Can you at least make the video available?

Matthew, if he doesn't post a video just grab your cell phone, turn your park lights on, and make a video. You can see the effect that way.
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Old 12-06-2018, 08:50 PM
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Originally Posted by Jeff V. View Post
This is how brightness is controlled in LEDs. You cycle it on and off at an extremely high speed to make it appear more or less bright. Even if you don't necessarily need them to be dimmed, you can still cycle them below their "fully on" threshold to help extend the lifespan of the unit.
(miss the Wiki tags)

https://en.wikipedia.org/wiki/Duty_cycle

Also Pulse Width Modulation

Last edited by KenHorse; 12-06-2018 at 08:52 PM.
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Old 12-06-2018, 10:08 PM
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Originally Posted by Matthewstorm View Post
Can you at least make the video available?
Sorry, guys, not much of a YouTuber. Try it now...

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Old 12-07-2018, 07:38 AM
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Originally Posted by GaryPitts View Post
Wish they had made them this way
Im glad they didnt.
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