ComIO.Studio is a free cross-platform serial terminal with an intelligent AI assistant for ESP32, STM32, Arduino, and AVR microcontrollers. Debug embedded systems, flash firmware, decode Modbus/NMEA protocols, and analyze UART/RS-232 data — all in one tool, on Linux, Windows, and macOS.
ComIO.Studio is a professional desktop application for engineers, makers, and embedded developers who work with serial (UART/RS-232) devices every day. It replaces multiple tools — serial monitor, protocol analyzer, firmware flasher, and debugging assistant — with one unified application enhanced by artificial intelligence.
Whether you're debugging an ESP32 over UART, flashing firmware to an STM32, automating test sequences with Lua scripts, or decoding an unknown protocol — ComIO.Studio gives you everything in a single window, on any operating system.
Read full description & user guide →Professional-grade tools for ESP32, STM32, Arduino, AVR — and any UART/RS-232 device
Full port configuration — baud rate, parity, data/stop bits, flow control. RS-232 and RS-485 support. Real-time RTS, DTR, DSR, CTS, DCD, RI line monitoring. Works with Modbus RTU devices, VFDs, PLCs, and industrial sensors.
Built-in AI that understands your serial data context. Ask questions, get protocol analysis, decode hex payloads, troubleshoot connections.
Configurable data buffer, ASCII/HEX encoding, search, timestamps. Connection statistics — RX/TX bytes, uptime, reconnections.
Flash firmware to ESP8266, ESP32, STM32, and AVR microcontrollers directly through the serial port (UART). No external programmers or tools needed — just connect via USB-to-serial and flash.
Quick-access macros (M1–M6) for frequently used commands. Automatic triggers with pattern matching for hands-free automation.
Native performance on Linux, Windows, and macOS. Small footprint, fast startup, system-level access.
The serial terminal is free. The AI assistant is available through affordable subscription plans and can help you with:
Paste raw hex data and AI identifies the protocol (Modbus RTU/ASCII, NMEA, AT commands, custom), decodes fields, and explains the structure. Ideal for debugging frequency inverters, PLCs, and RS-485 sensors.
AI sees your port config and terminal output. Ask "why is my device not responding?" and get actionable suggestions — baud mismatch, wiring, flow control.
Generate ready-to-use Lua automation scripts, AT command sequences, Modbus queries, or C/Python code snippets for your specific device.
Feed sensor readings, GPS coordinates, or telemetry frames — AI parses, converts units, spots anomalies, and summarizes trends.
Ask about chip registers, AT command syntax, baud rate calculations, or CRC algorithms — instant answers without leaving the terminal.
Having trouble flashing firmware? AI analyzes error logs, suggests boot mode wiring, identifies flash size mismatches, and guides you step by step.
The serial terminal is free. AI plans start at $3.90/month.
Free · ProBaud (BYOK) — use your own AI provider key and keep token costs under your control.
View All Plans & Compare →Native cross-platform performance on every desktop OS