Pimoroni MSA301 3DoF Motion Sensor Module - I2C Interface, LGA-12 Package

Name: Pimoroni MSA301 3DoF Motion Sensor Module - I2C Interface, LGA-12 Package
Brand: Pimoroni
SKU: SENS-1890
Price: 739.00 INR
Availability: OutOfStock

₹739.00 (Inclusive of all taxes)

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The Pimoroni MSA301 is a low-power, triaxial accelerometer module with I2C digital output, designed for motion tracking in consumer electronics, wearables, and IoT projects. It operates from 1.62V to 3.6V, making it compatible with 3.3V microcontrollers like Raspberry Pi, ESP32, and Arduino.

Features

Tri-axis MEMS accelerometer with user-selectable full-scale ranges (±2g, ±4g, ±8g, ±16g)
Ultra-low power consumption of 180μA for battery-sensitive applications
Digital I2C interface with 14-bit resolution for precise acceleration data
Compact LGA-12 package (2x2x0.91 mm) integrated onto a breakout board for easy prototyping
Configurable output data rate from 1Hz to 500Hz and an interrupt pin for event-driven designs

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Description

The MSA301 is a capacitive MEMS-based accelerometer offering high sensitivity, reliability, and low temperature dependence. Its integrated signal conditioning provides a clean digital output via I2C, simplifying integration into embedded systems without the need for external analog-to-digital conversion.

Designed for operation from -40°C to +85°C, the sensor is suitable for a wide range of environmental conditions. The breakout board provides accessible pin headers, making it ideal for prototyping motion-sensing applications such as gesture recognition, orientation detection, and activity monitoring.

Key Features

Low-g triaxial accelerometer with four programmable measurement ranges
Ultra-compact LGA-12 MEMS package for space-constrained designs
14-bit digital output ensures high-resolution acceleration data
Wide operating voltage range (1.62V–3.6V) compatible with 3.3V logic systems
Selectable output data rate from 1Hz to 500Hz for balancing power and performance
Integrated interrupt pin for efficient, event-based system polling
Robust operating temperature range from -40°C to +85°C
High-value build optimized for consumer electronics and portable device integration

Applications

Gesture recognition and user interface control in smart devices and wearables
Orientation detection and screen rotation in portable electronics
Activity monitoring and step counting in fitness trackers
Shock and vibration detection in industrial equipment condition monitoring
Tilt sensing and motion tracking for robotics and drone stabilization

Technical Specifications

Manufacturer Part Number	MSA301
Sensor Type	Triaxial Accelerometer (3DoF)
Operating Voltage	1.62V to 3.6V DC
Operating Current	180 μA (typical)
Interface	I2C Digital Output
Resolution	14-bit
Full-Scale Range	±2g / ±4g / ±8g / ±16g (User Selectable)
Output Data Rate	1 Hz to 500 Hz (Configurable)
Operating Temperature	-40°C to +85°C
Package Type	LGA-12 (2 mm x 2 mm x 0.91 mm)
Module Dimensions	Approx. 6 cm x 4 cm x 1 cm (Breakout Board)

Frequently Asked Questions

What is the operating voltage range of the MSA301 module?

The MSA301 accelerometer operates from 1.62V to 3.6V DC. This makes it directly compatible with 3.3V logic systems like Raspberry Pi, ESP32, and many ARM-based microcontrollers without requiring a level shifter.

How do I communicate with the MSA301 sensor?

Communication is via the I2C serial interface. The breakout board provides clearly labeled SDA and SCL pins for connection. The sensor's 7-bit I2C address is configurable, and libraries are available for popular platforms to simplify data reading and configuration.

Can I adjust the sensitivity and output rate of the accelerometer?

Yes, the full-scale range is software-selectable between ±2g, ±4g, ±8g, and ±16g. The output data rate is also configurable from 1Hz to 500Hz, allowing you to optimize the trade-off between measurement resolution, bandwidth, and power consumption for your specific application.

What is the purpose of the interrupt pin on the MSA301 breakout?

The interrupt pin can be configured to trigger on specific events, such as motion detection, free-fall, or data-ready signals. This allows your microcontroller to enter a low-power sleep mode and wake only when new data is available or a motion event occurs, significantly reducing system power consumption.