5 open source boards using the SCD41
Real designs built with the SCD41, from public GitHub projects: a quick way to see how others power, decouple and connect it. Each board comes with its KiCad files, full parts list and a render — and you can simulate its firmware on HardLabs.
ESP32Air quality sensor
roepkefeller
50.8 × 45 mm75 parts4LNo license58- schematic only · 37 partsRP2040/RP2350
Boardsmith
ForestHubAI
37 partsAGPL-3.034 
ESP32Airnode s3
AskAlice
70 × 50 mm31 parts2LNo license0
Wearable air quality
AMA-Labs
20.9 × 22.6 mm10 parts2LNo license0- schematic only · 37 partsRP2040/RP2350
BoardSmith
YashJanakiram
37 partsAGPL-3.00
The SCD41 in open source designs
The gallery holds 5 open source boards using the SCD41 from 5 GitHub repositories; a typical one measures about 50.8 × 45 mm and carries around 37 components.
67% are two-layer designs, the rest use four layers or more, and 40% carry an open source license.
The most starred is Air quality sensor by roepkefeller.
Parts used alongside the SCD41
Microcontrollers on boards using the SCD41
What boards using the SCD41 are built for
SCD41: common questions
Where can I find a SCD41 reference design?
Each of the 5 boards on this page is a real design using the SCD41. Open one to see how it is wired up, with the full BOM, a render of the layout and links to its KiCad files.
What parts are used alongside the SCD41?
The AMS1117-3.3, BME680, RP2040, SHT40 and SSD1306 appear in the most repositories here.
Which microcontrollers do boards using the SCD41 use?
Most are built on ESP32 (2) and RP2040/RP2350 (2).
How big is a typical board using the SCD41?
The median is 50.8 × 45 mm, and 67% are two-layer designs.
What is the most popular open source board using the SCD41?
By GitHub stars, Air quality sensor by roepkefeller, with 58 stars.
Can I simulate one of these boards using the SCD41 before building it?
Yes. HardLabs turns a board's netlist and BOM into a working simulation, so you can boot and test firmware against it with no hardware on your desk.