Brake Lights - anyone done a video of them?

[Discoducky]

My fav from the video. Evil was my first thought. Comin to get you gas cars!

 

[Babylonfive]

On it's way: Tesla Model S Exterior Lighting - YouTube

That was great... exactly what I wanted to know!

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I have seen this a lot with youtube. I think it is the frame rate of the device used to record the video.

A very standard process for regulating the brightness of LEDs (where multiple brightness levels are needed, or where thermals are being controlled) is to pulse-width modulate the LED driver. This process drives the LEDs instantaneously at full-brightness, but appears to your eyes at a brightness near the PWM value - this only woks at modulation rates over 50 hz or so, and most systems like this use 100-200Hz mod rates.

Because these frequencies intermodulate with the video camera (very different from the way that the eye integrates brightness), it looks like a flashing.

Very similar to spinning wheels at certain harmonic frequencies looking still on moving cars, or sometimes drifting backwards.

 

[cinergi]

Uh oh. Does your upper brake light bar have an LED out?

Yup! Didn't realize it until I review this video I made :smile: I just let service know.

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Great video - but I am not sure - did you show any rear fog-light(s )?

I didn't try to put fogs on while video'ing the rear -- wasn't thinking there were rear fog lights. I can double-check that.

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Great vid! So the LEDs next to the fogs can be turned on and off? Is that part of the drl control? I didn't realize there were so many configurations.

The DRLs only turn on the "eyebrow" to 100% around the main headlights. The LED strip below, near the fog lights, come on with parking / main. Turning parking/main lights on reduces the intensity of the DRL / "eyebrow" lights (as does using the turn signal).

 

[contaygious]

Cool. I love the main/parking lights. So nice!