8 open source boards using the SHT40
Real designs built with the SHT40, 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
ESP32PCB CANNONBALL
user-will
25.6 × 23.6 mm58 parts4LNo license14
ESP32OpenTRV-ESP
mpiraux
45 × 53 mm58 parts4LCERN-OHL-P-2.02
Silicon LabsDormouse
temonuv
36 × 25.1 mm9 parts2LMIT2
ESP32Airnode s3
AskAlice
70 × 50 mm31 parts2LNo license0- schematic only · 30 parts
Lidar roomscanner
hellosamblack
30 partsNo license0 
ESP32Roomnode s3
65 × 50 mm31 parts2LNo license0
ESP32Roomnode c3-mini
40 × 35 mm24 parts2LNo license0
The SHT40 in open source designs
The gallery holds 8 open source boards using the SHT40 from 6 GitHub repositories; a typical one measures about 45 × 45 mm and carries around 31 components.
57% are two-layer designs, the rest use four layers or more, and 25% carry an open source license.
The most starred is Air quality sensor by roepkefeller.
Parts used alongside the SHT40
Microcontrollers on boards using the SHT40
What boards using the SHT40 are built for
SHT40: common questions
Where can I find a SHT40 reference design?
Each of the 8 boards on this page is a real design using the SHT40. 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 SHT40 use?
Most are built on ESP32 (6) and Silicon Labs (1).
How big is a typical board using the SHT40?
The median is 45 × 45 mm, and 57% are two-layer designs.
What is the most popular open source board using the SHT40?
By GitHub stars, Air quality sensor by roepkefeller, with 58 stars.
Can I simulate one of these boards using the SHT40 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.