Add a Simple Circuit Breathing LED Effect to Your Pumpkin | Make:

So you’ve carved a killer jack-o-lantern, eh? What better way to show off your work than to use an LED to make it glow from within! This LED fades in and out as if your pumpkin monster is breathing! With a few extremely cheap components and a bit of free time, you can have just that. The best part? No programming is required, as this circuit is all analog.

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