4 layers100 × 75 mm
OpenAirScope
emertcakir/OpenAirScope
Open-source air quality and environmental monitoring node with STM32H743 + ESP32-C3, LoRaWAN, RS485, USB-C, Li-ion charging, and multi-sensor support.
282 parts26MIT
Boards using the SGP41-D-R4
38 boardsBoards in 33 GitHub repositories, designed in KiCad, that use the SGP41-D-R4 by Sensirion (DFN-6(2.4x2.4) VOC Sensors ROHS). See how each wires it, with its parts, size, README and files; the SGP41-D-R4’s symbol, footprint and pinout are on its own page.
- 4 layers75 × 56.4 mm
Esp32-c6-wroom1 board
pushtiujeniya/esp32-c6-environmental-logger
This repository contains an Environmental Sensor Station and Data Logger powered by the ESP32-C6-WROOM-1 microcontroller.
59 parts4 - 2 layers40 × 98 mm
- 2 layers40 × 27 mm
Sensor board voc temp
adamvirovecz/sensor-board-voc-temp
VOC, Humidity and Temperature Sensor Board
39 parts1MIT - 4 layers62.9 × 88.3 mm
Airgradient go main
Open-Air-Foundation/pcb-go
AirGradient GO is a handheld air quality monitor. It measures particulate matter (Sensirion SPS30), CO₂ (Senseair S12), VOC/NOx (SGP41), temperature and humidity (SHT4x), and barometric pressure (DPS368), with an…
194 parts1CC-BY-SA-4.0 - 2 layers75 × 75 mm
Air quality pcb
aleemacc/air_quality_sensor
PCB design for a custom air quality measuring device
30 parts - 6 layers60 × 100 mm
Senseboard
CPSLO-AI-Campus-Fire-Detection/senseboard
PCB for sensor stack and compute for fire detection system
109 partsAGPL-3.0 - 2 layers7.2 × 41.9 mm
- 4 layers50 × 38.9 mm
ESP32CAM Weather Station
EliaKr/ESP32CAM-Weather-Station
[WIP] This repo includes electronics (schematics/PCBs), 3D-printable mechanical parts, and software for a custom ESP32-CAM weather station.
96 partsGPL-3.0 - 4 layers65 × 56 mm
Sensor HAT
Eniemooo/Sensor-HAT
Open-hardware indoor air sensor (CO2, VOC/NOx, T/RH, light, sound): HAT for Raspberry Pi or standalone with Seeed XIAO + ESPHome. KiCad 10.
112 parts - 2 layers92.5 × 71.5 mm
- 4 layers25.5 × 62.8 mm
- 4 layers60 × 80 mm
Wisp
huulanka/wisp
Open-source ESP32 room climate monitor — CO2, VOC, humidity, temperature and light sensing with custom PCB, MQTT/HomeKit integration, and OTA firmware updates. Full hardware + software, from schematic to BOM.
91 partsMIT - 2 layers60 × 77.7 mm
- 2 layers49 × 50.4 mm
- 2 layers63.9 × 41.7 mm
ESP32-aqs
JokerIsMyBae/AirQualityHoboken
Applied IoT project voor luchtkwaliteitsmetingen in Hobokense Polder
51 parts - 4 layers60 × 60 mm
Ummon
JonaWe/ummon
ummon (from German Umgebungsmonitor, "environment monitor") is an ESP32-C6 based environmental sensor board with USB-C power.
95 parts - 2 layers86.6 × 56 mm
Card env sensor
Liesegang/env_sensor
Outdoorの開発・検証はファームウェア、 Web受信アプリ、BLE仕様を参照。 Card firmwareはv2基板で毎分測定・BLE送信、 10分ごとのSD一括記録、1時間ごとの電子ペーパー更新を行う。 iPhoneアプリは共通BLEで受信し、バックグラウンド収集・端末内の履歴保存・JSON / CSV書き出しを行う。 資料の一覧はデータシートにある。
78 parts - 2 layers45 × 95 mm
Airquality
MorgenWebDigital/airquality
A battery-powered indoor air quality monitor. Real CO₂ from a photoacoustic sensor, VOC and NOx, temperature, humidity and ambient light, shown on a 2.13" e-paper display and sent over Bluetooth LE.
78 parts - 2 layers40 × 40 mm
Airqualitymini
MorgenWebDigital/airqualitymini
A stationary indoor air quality sensor. Real CO₂, VOC and NOx, temperature and humidity. No display, no battery. Powered from USB-C, read out over Bluetooth LE.
32 parts - 2 layers10 × 12 mm
Sgp41-tvoc sensor module
Open-Air-Foundation/pcb-module-sgp41
A compact 2-layer carrier board for the Sensirion SGP41 TVOC/NOₓ sensor. It exposes the sensor's I²C interface on a 4-pin 2.54 mm header, with on-board pull-ups and decoupling — everything else lives on the host monitor.
8 partsCC-BY-SA-4.0 - 2 layers19.5 × 31.5 mm
SGP41 OLEDsm
RonHeg/SGP41_OLED_SuperMini
Air Temperature Humidity NOx VOC Pressure sensor PCB
24 partsMIT - 4 layers39.2 × 28.4 mm
- 2 layers52.7 × 48.7 mm
AirQualitymonitoringESP
sankarax/AQM420
Air Quality Monitoring project which includes the Arduino script integrating everything into the Blynk IoT app, schematics and the pcb build
20 parts