Serial Communication Tool

A modern, browser-based alternative to Tera Term and PuTTY. Built on the Web Serial API — no installation required. Send, receive, and log serial data directly in Chrome.

USE CASES
• Embedded development debugging (Arduino, ESP32, STM32, Raspberry Pi Pico)
• Industrial equipment configuration (RS-232C, RS-485 via adapter)
• IoT device communication
• Modbus, AT commands, custom protocols

KEY FEATURES
• Serial Configuration — Baud rate, data bits, parity, stop bits, flow control, RTS/DTR signal control
• Send/Receive Log — Timestamped logs with export (TXT/JSON/CSV), filtering, auto-save on disconnect
• Send History — Press ↑/↓ to recall past commands (up to 50)
• Quick Commands — One-click sending of frequent commands with drag & drop reordering
• Macro Automation — SEND/WAIT/RETRY syntax for automated sequences with response timeout
• Regex Alerts — Pattern-based alerts with audio notification
• RX/TX Rate Display — Real-time bandwidth monitoring
• Response Time Monitor — Latency measurement for command-response cycles
• HEX Binary Send — Send arbitrary binary data via hex notation
• Profile Management — Save and share connection profiles (import/export)
• Multilingual — Japanese, English, Chinese, Korean, German, French, Spanish, Portuguese

PERMISSIONS: Only "storage" — no network access whatsoever.