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 ...

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

Servo/practice_Servo9g SG90 9g servo Sweeps the horn back and forth between 10° and 180°. Buzzer/nokia_theme Passive buzzer Plays the Nokia ringtone once at startup, using a note/duration melody table ...

Most of us have an 8x8 LED matrix from one of our Arduino kits. What can we do with them? This module investigates how to use these interesting devices. Along the way, we describe a fun electronics ...