Make: Online : Weekend Project: Mini Bike Light

Weekend Project: Mini Bike Light

Ride safely at night with this easy to make Mini Bike Light.
Thanks go to Trevor Shannon for the original article in MAKE, Volume 14.
To download The Mini Bike Light video click here and subscribe in iTunes.
Check out the complete Mini Bike Light article in MAKE, Volume 14
and you can see that in our Digital Edition.
Here is the modified schematic using the LM3909 chip

Comments

Oldest comments listed first.

Posted by: Nelson on October 16, 2009 at 5:39 AM

diode are wrong placed

Hello,

Maybe I'm wrong but on the datasheet the diodes are connected on the other way.

Please confirm.

Nelson

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Posted by: tenax8.myopenid.com on October 16, 2009 at 10:23 AM

Careful!

Be aware that in some places the cops don't take a shine to having flashing blue lights on your bike, as they feel that is strictly THEIR gig.

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Posted by: joecr on October 16, 2009 at 3:52 PM

video

In the podcast feed over at http://blog.makezine.com/archive/make_podcast/index.xml You link to the PDF for this project but forgot to include the video in the feed.

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Posted by: KipKay on October 16, 2009 at 5:45 PM

@ joecr - The video link is right above the PDF post.

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Posted by: mzl on October 16, 2009 at 4:51 PM

Flashing lights make it harder to judge your distance and speed. It is illegal in most of Europe.

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Posted by: KipKay on October 16, 2009 at 5:42 PM

@mzi - It's really so others can see you not so you can see where you are going.

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Posted by: mzl on October 17, 2009 at 6:24 AM

Dear Kip,
If you want to cross a street, it's handy to know when you can cross the street. Knowing how far and how fast other traffic is going is helpful then.

Florida might not be much of a biking area, but where i live there's more bikes than cars, and have seen many problems regarding the flashy lights. It's illegal for a reason.

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