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- iriver Lplayer teardown
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- A simple logic analyzer
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- High-power LED mountain bike light
- Optimizing your Start menu for fast program access
- The best batteries in the world...
- Battery-powered USB iPod charge cable that requires no special components
- How to build a simple Luxeon LED bike headlight
This is an interesting
This is an interesting concept, and a great way to build a light with very little cost. However, as the commenter above posted, you would need much more power for practical use. Like you mention, it may be enough to let cars see you... but I'm afraid I need a much more powerful lamp for good use.