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SmartElex LIS3DH Triple Axis Accelerometer Breakout

SmartElex LIS3DH Triple Axis Accelerometer Breakout

₹106.00Price

🔍 Overview

The module is based on the LIS3DH 3-axis accelerometer IC, a low-power MEMS digital accelerometer.

  • Measures acceleration along:

    • X-axis

    • Y-axis

    • Z-axis

  • Detects:

    • Motion

    • Tilt

    • Orientation

    • Vibration

👉 It is a 3-axis motion sensing device widely used in embedded systems.

⚙️ Working Principle

🧠 MEMS Capacitive Sensing

  • Inside the sensor is a microscopic mechanical structure (mass + springs)

  • When acceleration occurs:

    • The mass shifts slightly

    • This changes capacitance between electrodes

🔄 Signal Conversion

  • Capacitance change → converted into electrical signal

  • Internal ADC (Analog-to-Digital Converter) converts it to digital data

👉 Output represents acceleration in g (gravity units).

📊 Measurement Characteristics

Acceleration Range (Selectable)

  • ±2g

  • ±4g

  • ±8g

  • ±16g

👉 Configurable depending on application.

Resolution

  • Up to 16-bit (high-resolution mode)

  • Typical sensitivity:

    • ~1 mg per LSB (varies with range)

Output Data

  • 3-axis digital values:

    • X, Y, Z acceleration

⚡ Electrical Characteristics

  • Supply voltage: 1.71V to 3.6V

  • Very low power consumption:

    • As low as ~2 µA (low-power mode)

👉 Suitable for battery-powered and wearable devices.

🔗 Communication Interface

  • I²C interface

  • SPI interface (3-wire / 4-wire)

👉 Flexible integration with microcontrollers.

🧠 Internal Features

✔ Built-in FIFO Buffer

  • Stores multiple samples

  • Reduces processor load

✔ Interrupt System

  • Generates interrupts for:

    • Motion detection

    • Free-fall detection

    • Click/tap detection

✔ Orientation Detection

  • Detects:

    • Tilt

    • Position change

✔ High-Pass / Low-Pass Filters

  • Removes noise

  • Improves signal quality

✔ Low Power Modes

  • Multiple operating modes:

    • Power-down

    • Low-power

    • Normal

    • High-resolution

🔄 Operating Behavior

✔ Acceleration Measurement

  • Measures:

    • Static acceleration (gravity → tilt)

    • Dynamic acceleration (movement, vibration)

✔ Tilt Detection

  • Uses gravity vector (~1g)

  • Determines orientation relative to Earth

✔ Motion Detection

  • Detects sudden or continuous movement

🌡️ Environmental Characteristics

  • Operating temperature: −40°C to +85°C

  • Stable under varying conditions

⚠️ Limitations

  • Cannot measure:

    • Absolute position

  • Drift may occur over time (especially for integration-based motion tracking)

  • Sensitive to:

    • Noise

    • Mechanical vibration

🔌 Typical Pin Configuration

  • VCC → Power supply

  • GND → Ground

  • SDA / MOSI → Data

  • SCL / SCK → Clock

  • CS → Chip select (SPI mode)

  • INT1 / INT2 → Interrupt outputs

🧩 Functional Role

The module acts as a:

  • Motion sensor

  • Tilt/orientation detector

  • Vibration sensor

  • Inertial measurement component

🏁 Summary

The SmartElex LIS3DH Accelerometer Breakout is a compact, low-power motion sensing module that:

  • Measures 3-axis acceleration (X, Y, Z)

  • Uses MEMS capacitive sensing technology

  • Provides digital output via I²C/SPI

  • Supports multiple ranges (±2g to ±16g)

  • Includes FIFO, interrupts, and filtering features

  • Is optimized for motion detection and orientation sensing applications

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