i had an idea to build bike stop light. there is a product “lucid brake” taht is basically already made accelerometer based stop light, but their video shows it brighter that it is in video of people that bought it and used it. in reality it is not as bright.
i also found compleate how to plans on similar light on instructables http://www.instructables.com/id/Bar-End-Brake-Light-BEBL/
i never actually ended up buing or building one, i do not think it will make bike riding any safer, since we normaly do not have brake lights on bikes, i doubt a person riding behind will figure in time what that light is. i mean i have been rear ended in a car, with 3 brake lights on, and people aware of what those light on a car mean.
i’m sure it will be fun to build such light, but as far as practical benefit, i seriously doubt. but than i do build many things just because i want to, not because it will have practical benefit to me.
Seattle (among other cities) has a shared-bike setup, and I hear those already come with an accelerometer-triggered taillight.
And I know I’ve seen at least one commercial taillight that includes this and a “brake light” feature that makes it brighter when you slow down. I don’t recall which one tho’.
MTBR is probably the place to look for more info.
But I’m delighted to see this thread branch out with multiple different sources and ideas.
The innovativeness reminds me of an old idea from Gransee, who early on thought he would make Arc flashlights that could modulate the emitter — so you could plug in a headset on a pair of them miles apart, point them at each other, and talk over the light beam. Other stuff happened instead, sadly, and I don’t think that ever happened.
Accelerometers are cool, but what if we just used the existing brake actuators to trigger the light? This would better emulate the brake lights used on a motor vehicle. Just like on a motor vehicle, you’ll have a taillight anyway. The brake lights are not there to indicate any and all deceleration, they are just to indicate that “hey, this person is activating the brakes… they may either be rapidly slowing down or about to rapidly slow down” … that second part is at least as important as the first part IMO. Knowing that someone is lightly pressing the brake in preperation to brake harder is crucial… IMO.
I asked, they answered. I invited them to look in, and it sounds like they will.
So if you’d be interested in the BlueBean board, feel free to add a brief “interested in BlueBean” note.
If there’s much interest I’ll sum up and email them
(or, I suppose, you could do that directly, this will get to the support thread email I started, I think)
I’m not rushing anyone into this particular board — glad to see other suggestions coming in
(note that the BlueBean mod fits into a known, available, good bike taillight, tho’, which simplifies things)
You must be a young’un (grin).
That’s how early generator bike lights worked, a wheel rode on the side of the tire turning a generator.
No move, no light; brighter and brighter the faster the wheel turned (incandescent of course).