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Smart Citizen Station

Smart Citizen Station v3

The Smart Citizen Station is a modular open-source environmental monitoring system. Multiple sensors can be added easily added, expanding the capabilities of the installation or replaced when they are damaged or the sensors lifetime is over. From a costs perspective, while being more expensive than the Smart Citizen Kit, it is also conceived as a low-cost solution. The design builds on top of the Smart Citizen Kit, adding an extra set of more accurate sensors, primarily aimed at measuring air pollutants. It aims at providing a solution that can be used by Citizens and Researchers to gather advanced air pollution data not only from a scientific point of view but also as a tool to engage local communities on air pollution-related issues.

Note that the Stations sometimes will look a bit smaller...


How can we collaborate for my next research project? How much will it cost to make one? Is it hard to install? Contact our team at

Smart Citizen Station v3

Intentionally fabbable

The Smart Citizen Station enclosure, as well as some of the electronics, can be fabricated and assembled in a Fablab. By doing so, we hope to encourage fully open environmental systems, ensuring reproducibility through accessible resources.

The sensors can include some, or all of:

  • Up to 16 analog sensors!, some of which can be gas sensors detailed as below
  • Gas sensors for gases such as B4 or A4 sensors from Alphasense Ltd. such as: CO, NO2, NO, O3, SO2, H2S. These are normally in configurations of 2, 4, or 6 sensors (normally O3 needs NO2 to compensate for cross-sensitivity)
  • CO2 NDIR Sensor with a sensirion SCD30
  • PM sensors from Plantower or others similar optical particle counters (OPC)
  • Temperature probe: external temperature probe for more reliable air temperature sensing
  • Ultra-violet radiation
  • Noise levels and FFT spectrum from the Smart Citizen Kit
  • Environmental metrics: temperature, humidity, ambient pressure from the Smart Citizen Kit

Smart Citizen Station rev3

From the ground up

The station uses the same core functionality, interface and feedback as the Smart Citizen Kit. Make sure you are familiar with them before jumping into the station!


If you are looking at the dimensions and mechanical/electrical information about the Smart Citizen Station, have a look at the enclosures repository

Exposure methods

Two possible options are available:

  • Passive sensor exposure
  • Forced ventilation sensor exposure (experimental)

Passive exposure example


Currently, the Smart Citizen Station is only available with an external power supply (230VAC to 5V). Find more info in the power supply section.

Battery operation?

The Smart Citizen Station currently does not support battery operation.


Currently, the Smart Citizen Station requires a Wi-Fi connection to report data to the online platform and it can also store data offline locally. Read more about the operation modes and the supported networks.

Connectivity Units

We tested customized connectivity units capable of deploying a local Wi-Fi network where multiple Smart Citizen Station can connect, data can be relied over GSM (¾/5G) or other IoT connectivity standards.

Development versions

Final iSCAPE Station version (iSCAPE-V2.0)

A note about versions

The iScape Living Lab Station 1.0 was the development version for the 2.0 version. It was sponsored thanks to the iSCAPE project under European Community’s H2020 Programme under Grant Agreement No. 689954

Middle iSCAPE Station version (iSCAPE-V1.0)