ComIO.Studio is a cross-platform serial terminal with an optional 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 uses BYOK (Bring Your Own Key) — you sign in to an AI provider, and ComIO.Studio routes the assistant's requests through it. Most developers already have a personal AI subscription that fits this role perfectly:
No AI subscription? Run a fully local LLM offline — no key, no account, nothing leaves your machine. Or bring an OpenRouter API key for hundreds of cloud models.
For installation and configuration steps, see the CLI Agents Setup 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.
Native cross-platform performance on every desktop OS