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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!
Step 1: 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
Solder & Soldering Iron
Heat Shrink (optional)
For everything else:
1- old bike horn
E-6000 glue (or similar)
Drill will assorted drill-bits
Dremel with cutting wheel & sanding attachment
Safety goggles for when using power tools