8x8 Programmable Matrix Display For Primary School Kids - Teaching Aid

This project uses an Arduino Uno board to control a custom-built 8x8 grid of SMD LEDs mounted on an FR4 PCB board. The display is arranged in rows and columns, with a total of 64 SMD LEDs in a 1206 package making up the visual screen. To wire this matrix efficiently using the provided resistors, the circuit incorporates eight 1kΩ SMD resistors to limit the electrical current flowing through the LED paths, preventing them from burning out. Additionally, fifty-six 0Ω SMD resistors act as simple bridge connections or jumpers on the printed circuit board to route signals cleanly across the traces. The Arduino Uno connects to the matrix using single-pin connectors, male-to-male jumper wires, and standard hookup wires. By writing code in the Arduino IDE, the microcontroller sends electrical signals to specific rows and columns in a sequence. Because the Arduino can turn these individual paths on and off very quickly, it can light up specific patterns, shapes, or letters on the 8x8 grid. This lets young students see visual representations of characters, numbers, and words light up right in front of them.