The Makeblock mBuild Soil Moisture Sensor is a soil moisture sensing module in the mBuild ecosystem developed by Makeblock. It’s designed for use in projects that require real-world environmental sensing — such as smart gardening, automated irrigation, and other STEAM/IoT applications.
🌱 Measures soil moisture levels with outputs in a range of 0–100 (relative moisture value).
🧠 Uses a resistive sensing principle — soil with higher moisture conducts electricity better (lower resistance), affecting the output value.
📏 Module size: approximately 24 × 72 mm.
📊 Range: 0–100, indicating moisture level.
📈 Accuracy: ±5%.
⚡ Operating current: 14 mA.
🔌 Plug-and-play mBuild connector — works with mBuild-compatible boards like CyberPi, mBot2 Shield, etc. for easy integration and programming via mBlock 5.
Monitor soil moisture for smart garden and automated irrigation systems.
Integrate into STEAM, robotics, and IoT projects requiring environmental data.
Use with controllers (e.g., CyberPi) to trigger actions like automatic watering when moisture drops.
✔ STEAM/IoT education and experiments
✔ Beginners learning about real-world sensors
✔ Classroom projects involving environmental sensing
💡 Note: The sensor reads a relative moisture index — not exact percentage of water by weight — but it’s ideal for comparative and control tasks in projects.