Baud

: In simple binary systems (like standard UART), one symbol equals one bit, so

: Higher rates (e.g., 115200+) are necessary for transferring large files or real-time sensor data. : In simple binary systems (like standard UART),

: Lower baud rates (e.g., 9600) are more reliable over longer cables or in noisy environments. one symbol equals one bit

: Utilize the termios structure and functions like cfsetispeed() to set serial port speeds programmatically. so : Higher rates (e.g.

. However, in advanced modulation (like QAM), a single symbol can represent multiple bits, making the bit rate much higher than the baud rate. Implementation Guide

: Use Serial.begin(baud_rate) to initialize communication.

: The most common "baseline" for low-speed, reliable communication.