- The line sequence of red, green, yellow, and black wires corresponds to 5V, RX, TX, and GND, allowing for easy identification and connection. - Operates at a fixed baud rate of 9600, 8 data bits, no parity, and 1 stop bit, ensuring reliable serial communication. - Compatible with USB to TTL modules for straightforward testing, making it ideal for quick setups and development. - Directly controls both 1.5V and 3.3V microcontroller serial ports. Whatever is sent through the serial port, including commands like printf("Hello everyone"), is relayed through the product's speaker, making it versatile for various applications. Key Benefits: - Effortlessly broadcast messages, numbers, letters, and Chinese characters, enhancing communication across projects in an intuitive manner. - Streamlines integration with microcontrollers without the need for additional components, saving time and reducing complexity. Use Cases: 1. Educational projects where students can learn about serial communication and practice programming with immediate audio feedback. 2. Home automation systems enabling voice notifications or alerts based on system conditions. 3. Prototyping applications in robotics where audio output is needed for user interaction or alerts during testing phases. With its straightforward installation and dependable performance, this product stands out as an essential tool for developers, educators, and hobbyists alike.