###DISCLAIMER/TRANSPARENCY --> All of the code for this project came from Ardunio and then was edited for my environmengt and asthetic goals of the LED Matrix ...

// Convert time to distance in centimeters (speed of sound ≈ 0.034 cm/us, half for to-and-fro) ...

8×8 LED Matrix modules are now widely available, and fortunately they are easy to use with our favorite Arduino microcontroller. 8×8 LED Matrix module have many applications in real life, such as ...