KnowCO2

KnowCo2 LLC mail

OSHWA UID

US002828 Project Website

Certification Date

June 12, 2026

Country

United States of America

KnowCO₂ is a pocketable, open-source CO₂ monitor built on ESP32-S3. Ships with a high-precision SCD41 sensor — compatible with SCD4x and SCD30 series sensors. Designed for makers, educators, and anyone who wants to understand indoor air quality in real time.

Version

1

Previous Versions


Licenses
Hardware
CERN-OHL-S-2.0
Software
MIT
Documentation
CC-BY-SA-4.0
View Documentation

Certification mark

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Project Type
Electronics
3D Printing
Agriculture
Education
Enclosure
Environmental
Home Connection
IOT
Manufacturing
Science
Tool
Other
Keywords
co2 monitor, carbon dioxide monitor, air quality monitor, indoor air quality, iaq, environmental monitoring, scd41, esp32-s3, circuitpython, open source hardware, portable co2 monitor

Citations