Free open source application to monitor traffic over a serial port. Simply choose the connection parameters, connect, and see the data received on the chosen serial port.

Aug 8, 2025 · If you’re getting a “Unable to open serial port” error message on Windows, we’re here to help. This usually happens when a program tries to access a serial (COM) port that …

Luckily PuTTY bundles the plink tool which lets us connect to serial ports from the command line. Speaking to the device at the other end of your serial port is as simple as passing the COM …

Only one open connection can exist per SerialPort object. The best practice for any application is to wait for some amount of time after calling the Close method before attempting to call the …

Jul 31, 2025 · The most efficient method of addressing the problem of COM ports not displaying in Device Manager is to install the Virtual Serial Port Driver utility. The tool emulates physical …

Learn how to effectively open and close serial ports in your applications with step-by-step guidance and code examples.

May 15, 2024 · Finding it is the first step in identifying your COM port. In the Device Manager window, locate “Ports (COM & LPT)” and click the arrow next to it. This action will expand a list …

SerialTool is a powerful and versatile software designed for serial communication across Windows, macOS, and Linux. It functions as a Serial Port Utility, Serial Port Monitor, and …

Jul 15, 2023 · In Device Manager, expand the Ports (COM and LPT) section to see if any serial port devices are displayed in it. If it is not displayed, it may be a driver problem or a problem …

Jun 23, 2025 · Before communicating on a serial port it must be opened. Opening the port allows the site to specify the necessary parameters that control how data is transmitted and received.