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SUPER FANTASTIC LED DOG COLLAR

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Step 2: Make a 9V power supply

Picture of Make a 9V power supply
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Take your Altoids tin and flatten out the bottom to allow more room for the battery.
Mark outline for the power jack.
If you don't have on your safety glasses put them on NOW.
Use Dremel to cut hole.
You can use a small file to cleanup the edges.

Next!
 
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