Question 1

How to connect to a serial port on Linux, Windows, or macOS?

Accepted Answer

Plug in a USB-to-serial adapter or a board with built-in USB serial (Arduino, ESP32). In ComIO.Studio the port is auto-detected — select it from the dropdown, set baud rate (typically 9600 or 115200), data bits, parity, stop bits, and click Connect. Works on Linux, Windows, and macOS.

Question 2

What is the best serial terminal for embedded development?

Accepted Answer

A cross-platform serial terminal designed for embedded engineers, ComIO.Studio supports ASCII, HEX, Modbus RTU and VT100 terminal views, timestamps, search, color-coded RX/TX, a configurable buffer (32 MB by default, up to 2 GB), and a right-click context menu — all in a modern dark-themed UI.

Question 3

How to send AT commands over serial port?

Accepted Answer

Type your AT command in the command bar, select Text format and CRLF line ending, then press Enter or click Send. The command bar in ComIO.Studio also supports loop send for repeated polling, command history, and file send for uploading data through the serial port.

Question 4

How to create serial port macros for quick commands?

Accepted Answer

Set up to ten one-click macro buttons in the ComIO.Studio sidebar. Open the Macros section, click + to add a macro, then set a name, command data, format (Text or Hex) and line ending. There is no Save button — every change goes to disk straight away. The buttons appear on the top bar; click one to send its command instantly. Macros persist across restarts.

Question 5

How to auto-respond to serial data with triggers?

Accepted Answer

Triggers in ComIO.Studio watch incoming serial data and automatically send a response when a text pattern is matched. For example, when a device sends 'Password:', the trigger can auto-reply with your password. Each rule has its own enable/disable toggle.

Question 6

How to automate serial communication with Lua scripting?

Accepted Answer

The built-in Lua 5.4 engine in ComIO.Studio exposes a serial automation API: send_raw(), wait_for(), on_text_line() callbacks, sleep() and timers (set_interval/set_timeout). Write scripts in the editor with syntax highlighting, load examples, and run them while connected to a serial port.

Question 7

How to flash ESP32 or STM32 firmware over serial UART?

Accepted Answer

The built-in MCU programmer in ComIO.Studio flashes firmware via UART bootloader — no JTAG or SWD needed. It supports ESP32, ESP8266, STM32, and AVR. Select the target chip, choose firmware files with flash addresses, and click Flash. DevKit boards with auto-reset don't require manual boot mode.

Question 8

Is there a serial terminal with an AI Assistant (BYOK)?

Accepted Answer

Yes. ProBaud unlocks the AI Assistant (BYOK) interface in ComIO.Studio. Connect your own supported AI provider account or supply your own local model. The assistant works with port configuration, recent terminal data, and protocol details for analysis, troubleshooting, Lua script generation, and frame decoding.

Question 9

How to log serial port data to a file?

Accepted Answer

Pick a file, then toggle Log ON in the sidebar to start capturing serial data. Choose format: Text, Hex, or Mixed, and enable timestamps for precise timing. The logging engine in ComIO.Studio records both RX and TX with direction prefixes, writing to the file as the data arrives — there is no download step at the end, and the capture survives a crash or an accidental clear of the terminal.

Question 10

Free serial terminal alternative to PuTTY and RealTerm?

Accepted Answer

A free cross-platform alternative, ComIO.Studio runs on Linux, Windows, and macOS. Compared to PuTTY and RealTerm, it offers a modern UI, macro buttons, auto-response triggers, built-in firmware flashing, and data logging. ProBaud unlocks Lua scripting, measurement charts, MCP, and AI Assistant (BYOK).

User Guide

🎬 Video Tutorials

Getting Started — Serial Connection, Macros & Triggers