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This illuminated ring for Halloween uses a 2032 battery and a white LED. A real pumpkin was scanned, then the mouth, eyes and battery slot were inserted using Tinkercad.com.

Step 1:

Using a 3D printer (or service like 3dhubs.com) print the ring, face upward.

Step 2:

Tape the LED to a 2032 battery. The long leg on the LED goes to + on the battery.

Step 3:

Insert the battery/LED combination into the slot on the back of the ring. This should last for a few days--then it will require a new battery.

<p>Thank you for your nice Instructable.</p><p>Rima</p>
<p>So adorable, and perfect for the season! I love the face you chose to give the little guy!</p>

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Bio: I am an author and a maker. Current projects include Santa's Shop and Little Friend (ultracapacitor powered robot) on hackaday.io. I'm working ... More »
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