comchan

comchan [OPTIONS]

comchan (Communication Channel) is a fast, minimal serial monitor written in Rust for communicating with serial-connected devices such as Arduino, ESP32, Teensy, and Raspberry Pi from the terminal. It supports reading and writing serial data, auto-detecting connected devices, real-time terminal-based plotting for sensor data with multiple sensor visualization, colorized log output, and cross-platform operation on Linux, macOS, and Windows.

-p, --port PORT

Specify the serial port (e.g., /dev/ttyUSB0, /dev/ttyACM0, COM3).

Set the baud rate (e.g., 9600, 115200).

Auto-detect the connected serial port.

Show detailed connection info.

Save output to a log file.

Enable real-time terminal-based graphing of sensor data.

Generate a default configuration file at ~/.config/comchan/comchan.toml.

Display help information.

Configuration stored at ~/.config/comchan/comchan.toml. Supports port (or "auto"), baud (default: 9600), data_bits, stop_bits, parity (none/odd/even), flow_control (none/software/hardware), timeout_ms, reset_delay_ms, verbose, and plot. Command-line flags override config file values.

On Linux, users may need appropriate permissions to access serial ports (typically membership in the dialout or uucp group). The --plot feature expects numeric data from the serial device to graph correctly.

comchan was created by Vaishnav Sabari Girish and is written in Rust under the MIT license. It is available via cargo, AUR, and Homebrew, and follows the Unix philosophy of doing one thing well.

minicom(1), picocom(1), screen(1), tio(1), cu(1)