Build Digital Cracker using Arduino and JQ6500 MP3 Module

This electronic digital firecracker system simulates the sensory experience of traditional fireworks safely and without pollution by combining microcontroller logic, temperature sensing, digital audio playback, addressable lighting, and amplification. At the core of the system is an Arduino Pro Mini or Nano, which continuously monitors an analog input from a thermistor circuit. When a user triggers the system—such as by applying heat or observing a programmed temperature threshold change—the Arduino initiates the sequence. It commands the JQ6500 Voice Sound Module to stream pre-loaded audio files representing firecracker sounds. This audio signal is routed into a PAM8610 Class-D Audio Amplifier, which efficiently drives an external speaker at high volumes. Simultaneously, the Arduino utilizes the Adafruit_NeoPixel library to output precise data signals to a chain of WS2812B NeoPixel LEDs. These programmable RGB LEDs burst into bright, dynamic color patterns that mimic the visual flashes of real pyrotechnics. Powering the entire architecture is a 12V Li-Po Battery Pack equipped with an onboard Battery Management System (BMS). Because the logic components require lower voltages, a 7805 Voltage Regulator steps down the 12V supply to a stable 5V rail for the Arduino, audio module, and LEDs. A potentiometer can also be integrated into the analog inputs to adjust parameters like timing thresholds or display brightness. Through this coordinated interplay of hardware and software, the circuit successfully translates physical sensor data into a synchronized, multi-sensory digital display.