FINAL PROJECT – 8X8X8 REAL-TIME VOLUMETRIC FFT DISPLAY

Derek RodriguesMicrocomputer Systems 1

Dr. Veton Kepuska

OUTLINE

Build hardware Build control circuit Write microcontroller code Write EVMOMAPL137 code Test results

BUILD ARRAY OF LEDS

512 LEDs soldered together into layers

Each layer soldered together till cube is completed

BUILD CONTROL CIRCUIT

Must control 512 LEDs Need minimum 72 io ports Employ multiplexing

WRITE MICROCONTROLLER CODE

Microcontroller listens over USART for an 8X8 byte array

Sends data to latch array Tells which latch to send to cube Pulls low (grounds) appropriate cube

layer(s)

WRITE EVMOMAPL137 CODE

Performs FFT Establishes UART communication link Prepares FFT data in format cube

understands (array [8][8] bytes) Sends formatted data at desirable rate

for visualizing 3D translation of 2D FFT

TEST RESULTS