Greenhouse CO2 Enrichment Kit with Arduino Uno & MH-Z19B Sensor

Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.

Give your greenhouse plants the carbon dioxide boost they crave. This kit turns an Arduino Uno and MH-Z19B sensor into a precise CO2 controller that opens a solenoid valve on a CO2 gas cylinder when levels drop below a set threshold - enriching the atmosphere exactly when your tomatoes, cucumbers, or leafy greens need it most. Build a reliable, compact automation unit that displays real-time readings on an OLED and sounds an alert if conditions drift.

What You'll Build

You will assemble a standalone CO2 enrichment module that continuously monitors ambient CO2 inside a greenhouse or grow tent. When the concentration falls below your programmed setpoint, the relay activates a solenoid valve (not included) connected to a CO2 cylinder, releasing gas until the target is reached. The bright OLED shows current ppm, status, and threshold, while the buzzer warns if levels stay outside safe bounds. It's a complete, expandable system you can mount on a wall or integrate into a larger farm automation setup.

What You'll Learn

• Interface an NDIR CO2 sensor with Arduino and read accurate ppm data via serial
• Program a relay to drive a 12V or 24V solenoid valve in a control loop
• Display sensor values and system state on a 0.96-inch OLED using I2C
• Design a closed-loop environmental controller with fail-safe buzzer alerts

Kit Contents

Why Buy This Kit Instead of Sourcing Parts Separately

Who This Kit Is For

This kit fits perfectly into CBSE Class 11-12 agriculture or electronics streams, B.Tech Agri Engineering or ECE final-year projects, Smart India Hackathon challenges around precision farming, and ATL Tinkering Lab makers building real-world sensor systems. If you're an IIT, NIT, or state university student exploring greenhouse automation, the pre-validated parts and AI support get you from concept to working prototype faster than sourcing alone.

Built and Backed by Compoden

Every Compoden kit ships with an AI build companion trained on this exact project - accessible via a QR code on the box, with WhatsApp and email backup. We've spent 10 years building projects for makers, schools, and institutions across India. If a part fails because of a manufacturing defect, replace it free within 7 days.