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Graphing Scientific Calculator Based on the ESP32

2026-05-15 | original
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Why This Matters

The development of the open-source NumOS scientific graphing calculator based on the ESP32-S3 represents a significant advancement in accessible, customizable, and high-performance calculator technology. Its integration of a Giac-backed CAS engine and natural paper-like formula rendering offers both industry professionals and consumers a powerful alternative to traditional proprietary calculators, fostering innovation and open collaboration in the tech industry.

Key Takeaways

🔢 NumOS Open-Source Scientific Graphing Calculator OS ESP32-S3 N16R8 · ILI9341 IPS 320×240 · LVGL 9.x · CAS Engine · Natural Display V.P.A.M.

Important Technical Status: Major Architectural Refactor

We are currently migrating the core math engine to Giac and implementing STIX Two Math for LaTeX-quality rendering. If you are compiling from main , you might experience UI glitches. For a stable experience, please check the Releases section.

Table of Contents

What is NumOS?

NumOS is an open-source scientific and graphing calculator operating system built on the ESP32-S3 N16R8 microcontroller (16 MB Flash QIO + 8 MB PSRAM OPI). The project aims to become the best open-source calculator in the world, rivalling the Casio fx-991EX ClassWiz, the NumWorks, the TI-84 Plus CE, and the HP Prime G2.

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Explore topics: esp32 numworks casio fx-991ex ti-84 plus ce hp prime g2
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