AirGradient ONE (I-9PSL) and Open Air (O-1PST) Firmware Versions

Please note that these firmware versions do not support the D1 mini (ESP8266) based models DIY Pro or Basic kit but we currently work on an update that will bring as many as possible of the new features to the D1 mini.

Flashing Instructions

Important. Please follow these steps for flashing only. If you only want to see debug messages and logs of the monitor see the instructions for logging.

1. Push the button on the PCB and keep it pushed
2. Plug in the USB C cable
3. Release the button. If you do not do this, the board will not get into the flash mode.
4. Click the blue Flash Now button next to the firmware version you want to install
5. Select the serial port your monitor is connected to. It is typically called “USB JTAG / Serial Debug”
6. Follow the instructions for flashing
7. After the flashing is complete, restart the monitor by unplugging the USB C cable (and plugging it back in)

Current Firmware

New firmware version that runs on both the AirGradient ONE I-9PSL and the Open Air O-1PST and O-1PP(T) models.

Old Versions available on Github.

Old Firmware Versions

AirGradient ONE Firmware

AirGradient Open Air Firmware

New Features in 3.0.x

MQTT

To use MQTT, you need to set the broker address on the AirGradient dashboard under Place Administration, Connectivity. You can use basic authentication with this format: “mqtt://username:password@my.broker.com:4711”

The MQTT address is then persistently saved on the monitor and thus should continue working even if the AirGradient servers are not available.

ABC period for SenseAir S8

By default the SenseAir S8 CO2 sensor does an automatic calibration every 7 days. In some cases, e.g. when you have a very air tight house, it is recommended to increase the ABC period. This can also be done on the AirGradient dashboard here in section “Set automatic baseline calibration”.

Local Polling

You can now poll air quality data within your local network by making a request in the form of "http://192.168.1.21/measures/current" and you will get the following json object as response

{
  "wifi": -48,
  "boot": 0,
  "serialno": "dc5475b2xxx0",
  "rco2": 422,
  "pm01": 9, 
  "pm02": 15,
  "pm10": 16,
  "pm003_count": 1560, 
  "atmp": 24.65,
  "rhum": 47,
  "tvoc_raw": 33025
}

The local API documentation can be found here.

mDNS

Supports mDNS. You don’t need to know the local IP address and can also poll with this URL structure:

http://airgradient_ecda3b1eaaaf.local/measures/current

“ecda3b1eaaaf” being the serial number of your monitor

TVOC Raw Signal

We are now also logging the TVOC raw signal from the SGP41 sensor. This data is currently not available on the dashboard but in the data export.

Repository & Bug Reports

The open-source code is accessible on the AirGradient GitHub Arduino. Please submit issues directly there.

Feature Discussions

For more general feature discussions, please use the AirGradient Forum.

Logging Instructions

Follow below to see debug messages and logs of the monitor:

1. Plug in the USB C cable
2. Press the blue button above
3. Select the serial port your monitor is connected to. It is typically called “USB JTAG / Serial Debug”
4. Click on “Logs & Console”
5. Click on “Reset Device” to reboot the monitor

Experimental Firmware