An LED matrix installed in a real pumpkin ... I spaced them by printing out a grid on the computer, taping it to the pumpkin, and drilling 70 holes in the front of the thing.

[Stan] built this LED matrix using a 16×16 grid of RGB LEDs. He built the hardware and wrote some subroutines to randomize the colors. He’s not using PWM because frame buffering is not feasible ...