Knowledge

In this section, you will find a compilation of the different environmental variables, and the sensors used to monitor them, available in the Smart Citizen Kit. Feel free to contribute!

Onboard Sensors

Below, you will find the sensors that are included by default in any of the Smart Citizen Kit versions (2.1, 2.2 or 2.3).

AMS AS7331

A sensor for measuring UV-index!

AMS CCS811

The AMS CCS811 is a Metal Oxide Sensor with I2C connectivity which is capable of measuring a VOCs.

Plantower PMS5003

The PMS5003 is an Optical PM sensor by Plantower at a very low cost!

SGX MiCS

The classic Metal Oxyde for CO and NO2 measurements!

Sensirion SEN5X

The Sensirion SEN5X is a newer PM sensor with a very good performance for such low cost. Available in SCK2.3!

Sensirion SHT3X

A temperature and humidity sensor that we love! Available in SCK2.X.

TDK ICS43432

A MEMs microphone with high sensitivity, available on SCK2.X series by default.

Auxiliary Connector

This is a list of supported sensors and other components that you can connect directly to the auxiliary port. The links provided below are for breakout boards by some other open hardware provided such as Sparkfun, Adafruit or Seeed Studio. However, any other format or breakout board would work.

Alphasense EC Sensors

Electrochemical sensors for a variety of chemical pollutants

Alphasense PID

A high-end PID from Alphasense to measure VOCs.

Atlas DO

A galvanic probe that can measure dissolved oxygen in water.

Atlas EC

A conductivity meter to measure electrolytes in a liquid!

Atlas ORP

An ORP probe is a passive device that detects a current generated from the oxidation or reduction of chemical substances in water.

Atlas Temperature

An encapsulated resistive sensor (RTD, resistance temperature detector).

Atlas pH

The pH probe is a very delicate submerged electrode in a thin glass bubble.

Bosch BME680

A multi-sensor node for environmental metrics and air quality.

Chirp Soil Moisture

Dallas DS18B20

One-wire weather-proof temperature sensor.

Figaro TGS260X

Low cost Metal Oxide sensors for VOCs

Sensirion SCD30

The SCD30 is a NDIR CO2 sensor by Sensirion. You can use it to measure CO2 in indoor spaces or for experiments where you need to know an accurate CO2 level.

Sensirion SCD4X

The SCD4X is a NDIR CO2 sensor by Sensirion. You can use it to measure CO2 in indoor spaces or for experiments where you need to know an accurate CO2 level.

Sensirion SFA30

An electrochemical sensor for measuring formaldehydes.

Sensirion SHT3X Weatherproof

A temperature and humidity sensor in a weatherproof capsule

Sensirion SPS30

The Sensirion SPS30 is PM sensor with a very good performance for such low cost. Only supported for experimental setups!

TI ADS1115

A high-end 16-bit 2 channel ADC available in the Analog Sensor Board.

TI INA219

A digital sensor for measuring electric current!

Tensiometer / Irrometer