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Here’s another 555 timer project for a pumpkin! Matthew writes – “I decided to use a little nerdery to make up for my lack of artistic talent. After scooping out the guts and carving an old school, evil-eyed, jagged-toothed, jack-o-lantern, I decided to do something a little different to light it. I came up with this simple circuit using a LM555 timer to blink LEDs on and off…” [via] – Link.


  • 555 timer projects – Link.
  • MAKE Halloween projects – Link.
  • MAKE Halloween archives – Link.

Phillip Torrone

Editor at large – Make magazine. Creative director – Adafruit Industries, contributing editor – Popular Science. Previously: Founded – Hack-a-Day, how-to editor – Engadget, Director of product development – Fallon Worldwide, Technology Director – Braincraft.

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