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ESPBoards Online Tools

Explore our collection of powerful, browser-based tools for electronics and microcontroller development. From circuit calculators to development tools, everything you need is just a click away—no installations required.

Electronic Calculators

Basic Electronics

Circuit Design

Advanced Tools

Development Tools

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Serial Monitor

Monitor real-time logs, sensor data, and debugging output from your microcontroller via USB directly in your browser.

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Program Uploader

Upload firmware or Arduino sketches to your ESP32 devices right from the browser.

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Display & Graphics Tools

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Bitmap Generator

Create and preview 8×8, 16×16, or 32×32 pixel graphics for OLEDs like the SSD1306.

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Audio Tools

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Audio Sequencer

Compose and preview buzzer melodies in a grid-based sequencer. Export ready-to-use code for ESP32 or Arduino.

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