This animated LED pumpkin, built by my HacDC cohort David Kaufman, uses a PIC16F648 microcontroller to individually control 25 LEDs in a styrofoam pumpkin. A Windows app is also available to edit the animations (which are then rebuilt into a PIC app).

LED Pumpkin

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Don’t forget, we have our own DIY Haunts contest running here on MAKE!