Crochet Dragon - Smaug from The Hobbit

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Step 11: Electronics

I  used the flickering orange LED of the tealight for the sparks and conveyed it by optical fibres to the nostrils.  To simplify things, I connected the LEDs for the eyes in parallel to the circuit board of the tealight since it has it's own battery pack and on/off switch.  To do this: first remove the cover from the tea light.  Break off the excess plastic (so that it can fit into the dragon head/neck).  Connect the two thread from the LEDs to the circuit board, be careful where you attach it, on some spots the eyes will flicker as well..
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