About Web Oscilloscope
A browser-based oscilloscope with three input sources. No installation required — works entirely in your browser using Web Audio API and Web Serial API. Perfect for electronics engineers, students, and IC testing.
Signal Generator — Built-in sine, square, sawtooth and triangle wave generator with adjustable frequency (1–2000Hz) and amplitude. Use the trigger slider to stabilize the waveform display.
Microphone — Captures live audio from your device microphone for real-time waveform visualization and frequency analysis.
USB Serial (Arduino) — Connect an Arduino or any microcontroller via USB. The oscilloscope reads analog values sent over serial and plots them in real time. Requires Chrome or Edge browser.
Arduino Sketch — paste this into your Arduino IDE and upload: