Open-source boards designed in KiCad by Open-Air-Foundation on GitHub, from 12 repositories. A board’s address here is its repository’s there.
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…
Open-Air-Foundation/pcb-module-ce-card
The CE card adds 4G cellular connectivity (LTE Cat 1) to AirGradient monitors. It can be used in the AirGradient Open Air, the AirGradient ONE, and the Open Air Max.
Open-Air-Foundation/pcb-one
AirGradient ONE is a desktop indoor air quality monitor built around an ESP32-C3 module. It measures particulate matter (Plantower PMS5003), CO₂ (Senseair S8), temperature and humidity (SHT4x), and VOC (SGP41), with…
Open-Air-Foundation/pcb-openair-main
The Open Air main board carries the monitor's ESP32-C3 MCU, USB-C power input with a 3.3 V LDO, a TPL5010 hardware watchdog, status LEDs and a push button, and the Molex connectors the plug-in sensor modules attach to.
Open-Air-Foundation/pcb-module-alphasense-adc
A compact 2-layer board carrying two Texas Instruments ADS1115 16-bit ADCs that read the AlphaSense electrochemical sensors — NO₂ (A43F) and O₃ (A431) — and report to the host monitor over I²C.
Open-Air-Foundation/pcb-module-s8
A passive 2-layer adapter for the SenseAir S8: two sockets matching the S8's 4-pin and 5-pin headers, with power (5 V) and UART passed straight through to an 8-pin host connector.
Open-Air-Foundation/pcb-module-s8-sunx
A 2-layer adapter that carries either sensor family on one footprint: two 5-pin sockets, an HT7333 3.3 V LDO for the SUNX supply, and solder jumpers to select the sensor power (JP9, pre-selected at manufacture).
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.
Open-Air-Foundation/pcb-module-sht40
A compact 2-layer carrier board for the Sensirion SHT4x (SHT4xI-DIGITAL) temperature and humidity sensor. It exposes the sensor's I²C interface on a 4-pin 2.54 mm header, with on-board pull-ups and decoupling —…
Open-Air-Foundation/pcb-module-sunx
A 2-layer adapter for the SenseAir Sunrise/Sunlight family: two sockets matching the sensor's 5-pin and 4-pin headers, an HT7333 3.3 V LDO with bulk decoupling for the sensor supply, and a solder jumper (JP1) for sensor…
Open-Air-Foundation/pcb-openair-max-main
Open Air Max is AirGradient's professional outdoor air quality monitor, designed for autonomous, off-grid operation.
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…
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…
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…
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