This board, designed for use with the Lets Talk Science Living Space Project, provides a CO2, temperature and Relative Humidity measurements to a BBC micro:bit (not included). We include a 9V battery clip adapter with the CO2 sensor (battery not included).

Visit the Lets Talk Science Living Space Project for more information and all sorts of useful resources and lesson plans.

Important! When powered by batteries, the CO2 sensor will provide power back to the micro:bit. Make sure you have the power leads connected correctly between the CO2 sensor board and the micro:bit or your micro:bit could be damaged!

Note: Micro:bit and crocodile clips not included

Features

• COZIR Ambient Sensor
• Powers micro:bit using 3.3V regulator
• LED power indicator
• CO2
• Relative Humidity
• Temperature
• Serial interface

Resources

• Instructions
• Lets Talk Science Living Space Project
• Datasheet

Specifications

Sensing

This board uses the COZIR Ambient sensor for more information on this module see: https://www.gassensing.co.uk/product/cozir-a-co2-sensor/

• CO2 concentration range: 0-2000 ppm
• CO2 Accuracy: +- 50 ppm
• Temperature: -25 – +55 C
• Relative humidity: 0-95 %

Absolute Maximum ratings

• Maximum supply voltage: 12 V

Electrical Characteristic

• Maximum current consumption: 40 mA
• Supply voltage: 5-9 V
• Serial interface baud rate: 9600 baud