Atmocube supports local data storage using a USB drive. By connecting a FAT-formatted USB drive to the USB-A port on the back of the device, Atmocube can store air quality data directly as a CSV file. This feature provides a convenient way to collect data locally, without relying on an internet connection, or a dashboard account.
How to Use USB Data Storage
- Prepare the USB Drive:
- Format your USB drive to FAT.
- Ensure the drive has sufficient storage space for the data.
- Insert the USB Drive:
- Plug the USB drive into the USB-A port on the back of the Atmocube.
- Data Storage:
- Atmocube will automatically detect the USB drive and begin storing AQ data as a CSV file. The Power LED will turn purple when USB data storage is active. Refer to LED Indicators
- The CSV file is updated continuously with the latest readings.
- Retrieve the Data:
- Remove the USB drive from the device and connect it to your computer.
- Open the CSV file to view the recorded data. The file is saved with the name: <DeviceID>.csv
Key Points to Note
- The USB drive must be FAT-formatted; other formats will not be recognized.
- Ensure your device is running the following firmware versions or later: 2.1.2.1 for BF2-E/BFCO2-E SKUs and 1.9.1.28 for BF1/BW SKUs
Refer to: Performing Firmware Updates and Firmware Versions and Release Notes.
- USB data storage is enabled by default but can be disabled in the Security tab via custom configuration. Make sure it’s re-enabled before using this feature.
- Data stored on the USB drive is separate from the cloud or dashboard storage. You can use cloud storage and USB storage in parallel if needed.
What Data is Stored?
Sample CSV File
The CSV file includes the following parameters:
| Parameter |
Unit |
Notes |
| Timestamp |
Unix time |
Conversion |
|
PM Mass Concentration:
PM1, PM2.5, PM4, PM10
|
µg/m³ |
- |
|
PM Number Concentration:
PM0.5, PM1, PM2.5, PM4, PM10
|
#/cm³ |
Requires firmware 2.6.2.6 or later |
| Temperature |
°C |
- |
| Humidity |
%RH |
- |
| Absolute Humidity |
g/m³ |
- |
| NOx Index |
Index (1–500) |
BF2-E/BFCO2-E only |
| VOC Index |
Index (1–500) |
BF2-E/BFCO2-E only |
| TVOC |
ppm |
Requires firmware 2.2.2.2 or later for BF2-E/BFCO2-E |
| CO2 |
ppm |
- |
| Noise |
dB |
- |
| CH₂O |
ppm |
- |
| Light |
Lux |
- |
| Pressure |
mbar |
- |
| CO |
ppm |
BFCO2-E only |
| O₃ |
ppm |
BFCO2-E only |
Note: IAQI (Indoor Air Quality Index) is not stored on the USB as it is calculated in the cloud. For the IAQI formula and breakpoint table, refer to Indoor Air Quality Index - IAQI
Need Help?
If you experience any issues or have questions about using USB storage, feel free to contact our support team for assistance:
