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High Precision 3-Axis Magnetic Field Sensor Module

High Precision 3-Axis Magnetic Field Sensor Module

₹372.00Price
🔍 What this sensor is
The SmartElex LIS2MDL Triple-Axis Magnetometer is a 3-axis magnetic field sensor used to detect:
  • 🧭 Direction (like a compass)
  • 🧲 Magnetic field strength
  • 📐 Orientation relative to Earth’s magnetic field
👉 In simple terms:
➡️ It acts like a digital compass module
🧠 Core Concept (VERY IMPORTANT)
This sensor measures magnetic field in 3 directions:
  • X-axis
  • Y-axis
  • Z-axis
➡️ Output = vector (3D magnetic field data)
👉 Using this, you can calculate:
  • Heading (North direction)
  • Orientation in space
⚙️ Key Specifications
  • Sensor IC: LIS2MDL (by STMicroelectronics)
  • Interface: I²C / SPI
  • Operating Voltage: ~3.3V–5V
  • Magnetic Range: ±50 gauss (±5000 µT)
  • Resolution: 16-bit output
  • Data Rate: up to ~100–150 Hz
  • Power Consumption: very low (~50–200 µA typical)
  • I2C Address: typically 0x1E
⚡ Working Principle (simple)
  • Earth has a magnetic field (like a giant magnet)
  • Sensor measures magnetic strength in 3 axes
  • Microcontroller calculates direction (heading)
👉 Result:
➡️ You get compass direction (0°–360°)
🧠 What it can do
This sensor enables:
  • 🧭 Digital compass
  • 📐 Orientation detection
  • 🧲 Magnetic field measurement
  • 🧭 Navigation systems
  • 🕹️ Motion tracking (with IMU)
🔌 Pinout (Typical)
  • VCC → 3.3V / 5V
  • GND → GND
  • SDA → I2C Data
  • SCL → I2C Clock
  • DRDY / INT → Optional interrupt
💡 Applications
  • 🧭 Electronic compass (very common)
  • 🤖 Robotics navigation
  • 🚁 Drones (heading control)
  • 📱 Motion tracking devices
  • 🕶️ AR/VR orientation
  • 🧠 9DOF IMU systems
🔥 Special Use (IMPORTANT)
👉 This sensor is often combined with:
  • Accelerometer
  • Gyroscope
➡️ Example:
  • Your previous sensor: LSM6DSO (6DOF)
  • Add this → becomes 9DOF IMU
✔️ Now you get:
  • Pitch
  • Roll
  • Yaw (true orientation)
⚠️ Important Notes (VERY IMPORTANT)
❗ 1. Needs calibration
👉 Raw readings are NOT accurate direction
You must calibrate:
  • Hard iron offset
  • Soft iron distortion
👉 Without calibration → wrong compass readings
❗ 2. Sensitive to interference
  • Nearby metal
  • Motors
  • Wires
➡️ Can disturb readings
❗ 3. Not standalone orientation sensor
👉 Alone = gives magnetic data
👉 Needs math + fusion for full orientation
🆚 LIS2MDL vs Other Magnetometers
SensorAccuracyComplexityUse
LIS2MDLGoodMediumGeneral compass
HMC5883LOlderEasyBasic projects
MLX90393HighMediumPrecision sensing
BNO055Very highEasyFull IMU (auto fusion)
👍 When to use this
Use LIS2MDL if you want:
  • Digital compass
  • Robotics navigation
  • IMU system (with accel + gyro)
  • Magnetic field sensing
👎 When NOT to use
Avoid if:
  • You want plug-and-play orientation → use BNO055
  • You are a complete beginner (needs calibration math)
🧠 Final Understanding
👉 This sensor = “electronic compass + magnetic field detector”
👉 Powerful when combined with IMU sensors
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