Instructables
Picture of Altoids Bike Headlight On The Cheap!
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This instructable is an entry in the Bicycle Contest, so please vote!
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Everyone riding a bike at night needs a headlight, or else someone might hit them with a car! But headlights are so expensive. I went to a bike shop in VA and the cheapest headlight was $25!!! That's crazy! So here's how to make one for pretty cheap!

WARNING: THIS INSTRUCTABLE USES POWER TOOLS AND ELECTRICAL COMPONENTS, I AM NOT RESPONSIBLE FOR ANYTHING STUPID YOU DO TO YOURSELF WHILE MAKING THIS FLASHLIGHT. WHEN USING THE DREMEL, IT DOES MAKE SPARKS, SO BE CAREFUL AND WEAR SAFETY GOGGLES!
 
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Step 1: Ingredients

Picture of Ingredients
For the electrical part:
1- Altoids Tin (or Small project box)
3- 5mm High-Brightness LEDs
3- Snap-in LED holders
1- Switch of your choice. I used a sliding STSP switch.
1- 9V battery, or other battery. Just know how much power your LEDs need and what resistance to give them. I used noahw's instructable "LEDs for Beginners" to find out how much resistance to use.
1- 9V battery snap
Some wire
Wire cutters/strippers
Solder & Soldering Iron
Heat Shrink (optional)

For everything else:
1- old bike horn
E-6000 glue (or similar)
Electrical Tape
Drill will assorted drill-bits
Dremel with cutting wheel & sanding attachment
Safety goggles for when using power tools
jolshefsky2 years ago
I saw this one come up on Adafruit's blog and thought it was hilarious that I made the exact same design with four changes:
  • I used 2 LED's and a resistor so the LED's would work even if the battery got very dead.
  • I added a "horn" with a piezo buzzerM
  • My handlebar mount is a screw-type hose clamp.
  • My switch is a pull-chain type because I thought it would be funny to have a light with a pull-chain.
Nice job regardless!
that pull chain idea sounds really cool!
CCube556 months ago
Im building this(radio shack needs a restock so) but I have the tin ready, and I put my minty boost in there too
Winged Fist2 years ago
Adambowker98 - You got my votes for all the contests you entered! (And 5 stars;-) Great use of an Altoids tin!
Adambowker98 (author)  Winged Fist2 years ago
Thanks! I made it because I had an empty tin and really needed a headlight that didn't cost $50!