4 open source boards using the SGP41-D-R4
Real designs built with the SGP41-D-R4, 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.
ESP32OpenAirScope
emertcakir
100 × 75 mm247 parts4LMIT26
ESP32ESPHome-Indoor-Multi-Sensor
mikelawrence
52.5 × 59.7 mm97 parts4LCERN-OHL-P-2.012- schematic only · 13 parts
Hardware
CropSentry
13 partsGPL-3.01 
ESP32Stencil
52.5 × 59.7 mm97 parts4LCERN-OHL-P-2.012
The SGP41-D-R4 in open source designs
The gallery holds 4 open source boards using the SGP41-D-R4 from 3 GitHub repositories; a typical one measures about 52.5 × 59.7 mm and carries around 97 components.
100% use four copper layers or more, and 100% carry an open source license.
The most starred is OpenAirScope by emertcakir.
Microcontrollers on boards using the SGP41-D-R4
What boards using the SGP41-D-R4 are built for
SGP41-D-R4: common questions
Where can I find a SGP41-D-R4 reference design?
Each of the 4 boards on this page is a real design using the SGP41-D-R4. Open one to see how it is wired up, with the full BOM, a render of the layout and links to its KiCad files.
Which microcontrollers do boards using the SGP41-D-R4 use?
Most are built on ESP32 (3).
How big is a typical board using the SGP41-D-R4?
The median is 52.5 × 59.7 mm, and 0% are two-layer designs.
What is the most popular open source board using the SGP41-D-R4?
By GitHub stars, OpenAirScope by emertcakir, with 26 stars.
Can I simulate one of these boards using the SGP41-D-R4 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.