Basic Specifications
Model NO.:IMU688M
Measuring Shafts:10
Accuracy Grade:0.6degree/H
IP Rating:IP67
Certification:ISO
Range:Gyro: ±450deg/S, Acc: ±16g
Bias Instability:Gyro: 0.6deg/H, Acc: 20ug
Interface:Uart, Spi
Specification:47*44*14mm
Origin:China
IMU688M High Precision 10DoF MEMS Inertial Measurement Unit
🚀 Main Features:
- High Precision 10DoF MEMS Unit
- Bias Instability: Gyro: 0.6°/h, Acc 20μg
- Full Temperature Range Accuracy Assured
- High Bandwidth (Typical): 200Hz
- UART & SPI Output (up to 2000Hz)
- Compact Size: 47 x 44 x 14 mm, 50g
The IMU688M is a tactical grade MEMS Inertial Measurement Unit featuring exceptional bias instability (0.6°/h Gyro, 20µg Accel). It provides precise 3-axis angular rate, acceleration, magnetometer, and barometer data, designed for harsh environments and high-reliability applications.
Technical Specifications
| Parameter |
Test Condition |
Min |
Typical |
Max |
Unit |
| Gyroscopes |
| Range | - | - | ±450 | - | °/s |
| Bias Instability | Allan variance | - | 0.6 | - | °/h |
| Bias Repeatability | - | - | 1.8 | - | °/h |
| Accelerometers |
| Range | - | - | ±16 | - | g |
| Bias Instability | Allan variance | - | 30 | 45 | ug |
| Environment & Physical |
| Operating Temp | - | -40 | - | 85 | °C |
| Vibration | 20~2000Hz | - | 6.06 | - | g |
| Size | - | 47 × 47 × 14 | mm |
Typical Applications
📍 Unmanned Aircraft: Ideal for flight control, antenna stabilization, and navigation (INS).
📍 Autonomous Vehicles: Provides linear acceleration and rotational rate measurements critical for safety and sensor-fusion, tracking attitude accurately even during skidding.
Product Advantages
Frequently Asked Questions
What is the Working Principle of an IMU sensor?
IMUs use reference data and bias values from a starting point, calculating changes in position, speed, and orientation via integrated accelerometers and gyroscopes using dead-reckoning algorithms.
What degrees of freedom does the IMU688M measure?
It measures six degrees of freedom: linear motion across three perpendicular axes (surge, heave, sway) and rotational movement about three axes (roll, pitch, yaw).
Is the SPI sampling rate configurable?
Yes, the SPI sampling rate can reach up to 2000Hz and can be factory-set to your specific requirements, such as 100Hz or other frequencies.
What are the primary sensor components?
The unit is comprised of triaxial accelerometers and gyroscopes. It also includes an optional magnetometer and barometer to compensate for orientation drift.
Can you provide ODM services for this module?
Yes, we offer custom designs including modified accelerometer ranges (e.g., ±40g), specialized algorithms, and housing adjustments to fit specific industrial applications.
How is long-term bias calibration maintained?
We perform 48-hour Environmental Stress Screening (ESS) to minimize deformation. For ultra-high precision requirements over several years, units can be returned for factory re-calibration.
Buddy robotics
