DAIMU 101 & 131: PCB-Embeddable Ultra-Lightweight Inertial Measurement Modules

SKU:DAIMU101&103
The DAIMU 101 and 131 are two ultra-compact, high-performance industrial-grade MEMS Inertial Measurement Units (IMUs) designed for space-constrained applications. With dimensions of only 12×12×3.3mm and a weight of just 0.8g, they are recognized as the smallest in the industry. Featuring a stamp-hole gold plating process, these modules can be directly embedded into PCB boards like a chip, significantly simplifying system integration.
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1. DAIMU 101 & 131: PCB-Embeddable Ultra-Lightweight Inertial Measurement Modules Overview

The DAIMU101 and DAIMU131 are two ultra-compact, high-performance industrial-grade MEMS Inertial Measurement Units (IMUs). With dimensions of only 12×12×3.3mm and a weight of just 0.8g, they are recognized as the smallest in the industry and can be directly embedded into PCB boards. They integrate high-precision gyroscopes and accelerometers, support SPI/IIC interfaces, and provide complete algorithm source code for deep customization. The products undergo full temperature range compensation, independent turntable calibration, and rigorous environmental testing, offering excellent shock resistance, vibration tolerance, and magnetic shielding. They operate stably across -40°C to 85°C and are widely used in drones, robots, VR/AR, autonomous driving, and industrial attitude monitoring.

2. Product Features

  • Ultra-Compact and Lightweight: Adopting stamp half-hole gold plating process, dimensions of 12×12×3.3mm and weight of 0.8g make it the smallest in the industry, easily embeddable in PCBs for space-constrained devices.
  • Rich Interfaces and Compatibility: Supports IIC and SPI interfaces; program compatible with STM32/GD32/Standard C libraries, offering high development freedom and easy integration into existing systems.
  • High-Precision Sensors: Equipped with 4.5-4.0°/hr bias instability gyroscopes and 20-10mg bias instability accelerometers, providing accurate angular velocity and linear acceleration measurements.
  • Advanced Fusion Algorithms: Built-in complementary filter and Kalman filter (EKF/UKF) algorithms for three-axis attitude angles, enabling high-precision attitude calculation.
  • Excellent Environmental Adaptability: Operates stably across -40°C to 85°C (with temperature drift compensation), withstands 2000g shock, 10g vibration, and 100% magnetic shielding, suitable for harsh industrial environments.
  • High Reliability Verification: Passes rigorous validation through four production line stations including independent turntable calibration and temperature drift compensation; single-board test yield rate 99.9%; stable operation >1000 hours.
  • Open Algorithm and Development Support: Provides algorithm source code for diversified development; BIAS compensated across full temperature range (-40°C to 85°C); independent turntable calibration; multi-position calibration eliminates non-orthogonal errors; calibration parameters available for free download.

3. Detailed Technical Parameters

Parameter Specification (DAIMU101 / DAIMU131)
Gyroscope Bias Instability 4.5°/hr (101) / 4.0°/hr (131)
Gyroscope Angular Random Walk 0.8°/√hr (101) / 0.6°/√hr (131)
Gyroscope Measurement Range ±2000°/s (both)
Accelerometer Bias Instability ±20mg (101) / ±10mg (131)
Accelerometer Velocity Random Walk 0.12m/s/√hr (101) / 0.09m/s/√hr (131)
Accelerometer Measurement Range ±32g (101) / ±16g (131)
Temperature Range -40°C ~ 85°C (with temperature compensation, both)
Power Consumption 10mW (both)
Input Voltage 3.3V ~ 8.0V (both)
Hardware Interface SPI / IIC (both)
Magnetic Shielding 100% (both)
Weight 0.8g (both)
Shock Resistance 2000g (both)
Vibration Resistance 10g (both)

4. Application Scenarios

  • Drone Flight Control: Quickly adapts to various drones, providing precise attitude and position awareness for stable hovering and agile maneuvering.
  • Intelligent Robot Motion Positioning: Used for robot navigation, balance control, and motion trajectory tracking, enhancing intelligence.
  • VR/AR Human Motion Capture: Enables high-precision head and body motion tracking for immersive experiences.
  • Autonomous Driving Attitude Sensing: Provides real-time attitude and heading information for autonomous vehicles, aiding path planning and safety control.
  • Precise Control in Automation: Suitable for industrial automation equipment, robotic arms, etc., enabling precise motion regulation.
  • Industrial and Infrastructure Attitude Monitoring: Monitors tilt and vibration of bridges, buildings, towers, etc., ensuring safety.
  • High-Precision Industrial Equipment Control: Integrated into precision instruments for highly stable motion measurement and control.

DAIMU Series Comparison

Specifications DAIMU 101 DAIMU 131 DAIMU 301 DAIMU 331 DAIMU 303 DAIMU 333 DAIMU 351
Gyroscope Bias Instability 4.5°/hr 4.0°/hr 3.0°/hr 3.0°/hr 2.5°/hr 2°/hr 0.2°/hr
Angle Random Walk 0.8°/√hr 0.6°/√hr 0.8°/√hr 0.6°/√hr 0.8°/√hr 0.6°/√hr 0.2°/√hr
Measuring Range ±2000°/s ±2000°/s ±2000°/s ±2000°/s ±2000°/s ±2000°/s ±4000°/s
Accelerometer Bias Instability 0.12m/s/√hr 0.09m/s/√hr 0.12m/s/√hr 0.09m/s/√hr 0.12m/s/√hr 0.09m/s/√hr 0.032m/s/√hr
Velocity Random Walk 20mg 10mg 20mg 10mg 20mg 10mg 30μg
Measuring Range ±32g ±16g ±32g ±16g ±32g ±16g ±32g
Three-axis Angle Accuracy / / Roll0.05° Pitch0.05° Yaw0.2° Roll0.04° Pitch0.04° Yaw0.2° Roll0.04° Pitch0.04° Yaw0.2° Roll0.02° Pitch0.02° Yaw0.2° Roll0.01° Pitch0.01° Yaw0.1°
Hardware Interfaces SPI/IIC SPI/IIC UART/USB UART/USB UART/CAN UART/CAN UART/CAN
Power Consumption 10mW 10mW 120mW 120mW 150mW 150mW 300mW
Input Voltage 3.3V-8.0V 3.3V-8.0V 3.3V-16.0V 3.3V-16.0V 3.3V-16.0V 3.3V-16.0V 3.3V-16.0V
Refined Temperature Calibration -40℃-85℃ Temperature Compensation
Communication Protocol Compatibility / / AT Commands / Extendable Formats
Program Compatibility STM32/ GD32/ Standard C Library
Dimensions (LWH) (mm) 12123.3 mm 12123.3 mm 15.415.4 3.5mm 15.415.4 3.5mm 242410m m 242410m m 43.543.5 28mm
Weight (g) 0.8g 0.8g 1.4g 1.4g 6.5g 6.5g 38g
Waterproof Grade IPX0(Non-waterproof) IPX68
High-intensity Working Condition Resistance 2000g (0.5ms, half-sine, 3-axis); 10g ultra-high vibration resistance (10-2kHz, 3-axis); 100% magnetic shielding

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