2 layers25.1 × 25.2 mm
Mini Environmental Sensor
MbFredys/PCB-Mini-Environmental-Sensor
Compact ESP32-C3 environmental-sensor PCB design using BME280 and SGP40 for temperature, humidity, pressure, and VOC-based air-quality sensing.
34 parts14
Boards using the SGP40-D-R4
19 boardsBoards in 16 GitHub repositories, designed in KiCad, that use the SGP40-D-R4 by Sensirion (-10℃~+50℃ 0.85mm 0.8mm 0ppm~1000ppm 1.7V~3.6V 2.44mm 2.44mm 2.6mA Air quality I2C Reset function DFN-6-EP(2.4x2.4) VOC Sensors ROHS). See how each wires it, with its parts, size, README and files; the SGP40-D-R4’s symbol, footprint and pinout are on its own page.
- 4 layers95 × 67 mm
- 2 layers44.7 × 93.6 mm
- 4 layers74 × 56 mm
Atmos
HearnChristian/atmos-sense
ESP32-based atmospheric sensing node: BME280 environmental sensing and AS3935 lightning detection over I2C, designed for drone integration. KiCad hardware plus firmware.
73 parts1MIT - 2 layers60 × 40 mm
AMUN
Summanuss/openairqmonitor
Open source hardware to monitor temperature, humidity and VOC in an indoor environment
47 parts1Apache-2.0 - 4 layers47.1 × 45.3 mm
Mixed signal Board Rev D
Akhilesh-design-02/STM32F407-Hardware-Design
4-layer STM32F407 mixed-signal PCB design featuring I2C/I2S/USB interfaces, SGP40 & SHT40 sensors, power plane splits, and star grounding for noise isolation.
92 parts - 4 layers50.8 × 22.9 mm
Weather Feather Wing
benjamincrockett/Weather-Feather-Wing
A circuit board incorporating temperature, humidity, atmospheric pressure, and CO2 sensors into an Adafruit Feather Wing form factor with Stemma QT connectors.
35 parts - 4 layers112 × 100 mm
Ai05-env sensors
leafony/ai05-env-sensors
全センサーは Leafony Bus の 3.3 V・I²C に接続します。基板は 23 × 20 mm、4層、板厚 0.8 mm です。
252 parts - 2 layers65.1 × 35 mm
- 2 layers65 × 56 mm
Canary
michael-michelotti/canary
Raspberry Pi air quality HAT with a custom Linux IIO kernel driver for the Sensirion SGP40.
26 parts - 4 layers90.5 × 53 mm
- 2 layers51.8 × 31.8 mm
Mask board
Zman350x/respirator-main-board
Controls the fans of an active respirator, with added user interface and various indicators. Made for Intro Engineering Design final project, Fall 2025.
60 parts - 4 layers55.8 × 50.8 mm
Air Quality Sensor Board
Roshan-khatri78/Electronics-Projects-KiCad-
A collection of my KiCad projects and PCB designs. These projects reflect my learning journey in electronics and PCB design.
46 parts2 - 2 layers22.5 × 14 mm
Gas Sensor
Apex-Ottawa-Team/hardware
All the PCBs and CAD files for our Apex weather balloon module
14 partsGPL-3.0 - 4 layers23 × 20 mm
Ai05-env sensors
leafony/ai05-env-sensors
全センサーは Leafony Bus の 3.3 V・I²C に接続します。基板は 23 × 20 mm、4層、板厚 0.8 mm です。
20 parts - 2 layers10 × 22 mm
- 2 layers65.1 × 35 mm
- 2 layers60 × 40 mm
Canary
offgridevices/offgrid-hardware
Open hardware from OffGrid Devices. One folder per board. CERN-OHL-S.
52 partsCERN-OHL-S-2.0 - 2 layers18.6 × 27.4 mm
