Technical Details

Overview

Oscilloscope Online is a lightweight, browser-based serial plotter powered by the Web Serial API. It enables anyone to visualize and monitor signals, sensor data, and other values directly from a microcontroller (MCU)—without needing costly oscilloscopes or complex data loggers.

Serving as a feature-rich alternative to the Arduino IDE Serial Plotter, it features a clean UI, high-performance and interactive charts via uPlot, and multiple export formats for superior real-time visualization.

Compatible with any serial device—including Arduino, ESP32, STM32, and Raspberry Pi—it supports research, sensor analysis, and hobbyist robotics projects.

Fully client-side and requiring no installations, Version 2 introduces advanced controls, enhanced customization, and automation features (e.g., special-character triggers for downloads and screen clearing) to streamline workflows.

Fast, versatile, and accessible, Oscilloscope Online makes professional-grade serial data monitoring simple and efficient.

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