MONKMAKES CO2 Mini Kit for micro:bit with Crocodile Clips

The MONKMAKES CO2 Mini Kit is a unique sensor board designed for the BBC micro:bit, integrating a genuine SCD41 Sensiron CO2 sensor with temperature and humidity sensing capabilities. This compact educational tool is perfect for teaching coding, environmental science, and data logging, providing a hands-on way to monitor indoor air quality and climate conditions.

A standout feature is its integrated multi-colour LED indicator, which provides an at-a-glance assessment of air quality by changing colour: Green for good (below 1000ppm CO2), Orange for moderate (below 3000ppm), and Red for poor (above 3000ppm). This visual feedback makes it ideal for beginner-friendly projects and immediate environmental awareness.

The board is powered directly by the micro:bit via its edge connector and includes reverse polarity protection to prevent damage from incorrect connection. It communicates via a simple serial interface, and the kit is supplied with five crocodile clip leads for easy and secure attachment to both V1 and V2 micro:bit models. Please note that some advanced example projects in the manual require a V2 micro:bit.

Key Applications & Learning Outcomes

This kit enables students and makers to build projects that measure and log carbon dioxide levels, temperature, and relative humidity. It's perfect for creating classroom air quality monitors, smart greenhouse controllers, or data-logging experiments. By connecting real-world sensor data to the micro:bit's programmable LEDs and sound output, users can create interactive systems that respond to environmental changes, fostering skills in computational thinking and scientific inquiry.

Technical Specifications

• Sensor Module: Sensiron SCD41
• CO2 Measurement Range: 400 - 5000 ppm
• Temperature Range: -10°C to +60°C
• Humidity Range: 0 - 100% RH
• Interface: U