DAIMU 303/333 Industrial IMU: High-Precision CAN-Bus Sensor with Advanced Kalman Filter for Harsh Environments

2026-04-20 0 IMU 1731℃

DAIMU 303/333: Industrial IMU with Integrated CAN-Bus

Compact, rugged inertial measurement units featuring advanced Kalman Filter algorithms for high-precision attitude measurement in UAVs, robotics, autonomous vehicles, and demanding industrial applications.

Engineered for Extreme Conditions

The DAIMU 303/333 series represents the next generation of industrial-grade inertial measurement units, combining a built-in MCU with advanced EKF/UKF Kalman Filter algorithms for real-time, stable data output across a wide temperature range from –40°C to 85°C.

Housed in a compact anodized aluminum enclosure measuring just 24 × 24 × 10 mm and weighing only 6.5g, these modules deliver exceptional durability with 2000g shock resistance and 100% magnetic shielding, making them ideal for the most challenging environments.

⚡ Power & Connectivity
Power Consumption150 mW
Input Voltage3.3V – 16V
InterfacesUART + CAN-Bus
Output RateUp to 200 Hz

🔧 Durability Ratings

Shock Resistance2000g
Vibration10g
Magnetic Shielding100%
Operating Temp–40°C to 85°C

📐 Physical Dimensions

Dimensions24 × 24 × 10 mm
Weight6.5g
HousingAnodized Aluminum
MTBF>1000 hours

Model Comparison: DAIMU303 vs DAIMU333

Specification	DAIMU 303	DAIMU 333
Gyro Bias Instability	2.5°/hr	2.0°/hr
Accelerometer Range	±32g	Standard
Roll/Pitch Accuracy	Standard	0.02°
Yaw Precision	0.2° (both models)
Ideal Application	High-dynamic scenarios	Ultra-stable attitude control

Key Features & Benefits

🎯

Advanced Kalman Filter Processing

Integrated EKF/UKF (Extended/Unscented) Kalman Filter algorithms process raw sensor data to output precise 3-axis angles with exceptional stability and minimal drift.

🔗

Seamless CAN-Bus Integration

Daisy-chain wiring capability simplifies installation in large-scale systems. Deterministic data transmission with error-checking ensures robust communication in noisy industrial environments.

🌡️

Intelligent Temperature Compensation

Onboard temperature compensation system ensures minimal drift even in harsh environments, maintaining accuracy across the full operating temperature range.

🔌

Flexible Communication Protocols

Compatible with standard AT command sets and extensible communication formats for rapid integration with STM32, GD32, or any C-based platform.

✓

Precision Calibration

Each module undergoes independent turntable calibration, multi-position non-orthogonal error correction, achieving a test yield of 99.9%.

Target Applications

🚁

UAV Flight Control

🤖

Robotics Navigation

🚗

Autonomous Driving

🏭

Industrial Automation

⚙️

Robotic Joint Servo

🔩

Heavy Machinery

The modules integrate seamlessly with existing PLCs via CAN-Bus, while their compact form factor and low power consumption make them ideal for space-constrained payloads and portable battery-powered applications.