Web-based serial port debugging tool with real-time data monitoring
Serial port communication is a method of data transmission where data is sent sequentially, one bit at a time, over a communication channel. It's commonly used to connect computers with peripheral devices like microcontrollers, sensors, and embedded systems.
Serial communication is widely used in IoT devices, Arduino/ESP32 projects, debugging embedded systems, and industrial automation. It provides a simple, reliable way to exchange data between devices.
Baud rate is the speed of data transmission in serial communication, measured in symbols per second. It must be set to the same value on both communicating devices. Common baud rates are standardized to ensure compatibility across different systems.
Common values: 9600, 19200, 38400, 57600, 115200, 230400, 460800, 921600
Reference: RS-232 Standard (ITU-T V.24)
Data bits specify the number of bits in each character, typically ranging from 5 to 8 bits. 8-bit data is most common as it can transmit standard ASCII characters (0-255). Fewer data bits are used for special protocols or legacy devices.
Common values: 7 bits (ASCII characters), 8 bits (extended ASCII and binary data)
Reference: ASCII Standard (ANSI X3.4-1986)
Parity is a simple error detection mechanism. Even parity ensures an even number of 1s in the data bits, while odd parity ensures an odd number. 'None' is commonly used in modern applications as more reliable error detection methods are available.
Types: None, Odd, Even, Mark, Space
Reference: RS-232 Error Detection Mechanism
Stop bits mark the end of a data frame, typically 1 or 2 bits. 1 stop bit is the standard setting, while 2 stop bits are mainly used for legacy devices or special protocols. Stop bits give the receiver time to prepare for the next character.
Common values: 1 bit (standard), 2 bits (legacy devices or special protocols)
Reference: UART Communication Protocol Standard
Flow control manages data transmission speed to prevent the receiver from being overwhelmed by fast data transmission. Hardware flow control uses RTS/CTS signal lines, while software flow control uses XON/XOFF characters.
Types: None, Hardware (RTS/CTS), Software (XON/XOFF)
Reference: RS-232 Hardware Handshaking Protocol
For more information: Wikipedia RS-232, UART Protocol Standards Documentation
Direct browser access to serial ports without additional software
Live data monitoring with timestamp and auto-scroll support
Send and receive data in hexadecimal format with validation
Track and replay previously sent commands
Monitor data transmission rates and connection time
Support for Chinese, English, Japanese, French, and Spanish