Inertial Systems

Precise Navigation Made Simple

ACEINNA’s inertial solutions deliver high precision in an easy-to-use open source development environment. Our fully temperature calibrated solutions deliver the performance needed to sense the real-world motion of today’s intelligent systems.

Inertial Measurement Units (IMU)

Open IMU solutions offer best-in-class IMU performance with fully customizable, open source algorithms.

Tilt Sensors

Ruggedized, environmentally sealed inertial sensors that can survive tough construction, agriculture and industrial applications.

Inertial Navigation Systems (INS)

GNSS & IMU sensors combined to deliver cm level accuracy positioning and inertial positioning estimation.

Navigation Studio

Simulate -> Code & Deploy -> Analyze Navigation Systems


Easily create a virtual IMU, motion trajectory and navigation algorithm simulations.

Code & Deploy

Customize and deploy algorithms directly on ACEINNA’s OpenIMU hardware using Free VS Code Extension. Implement an INS Kalman Filter.


Connect ACEINNA OpenIMU directly to ACEINNA Navigation Studio to record and analyze real-world results.

OpenIMU Development Platform

Link to OpenIMU



The ACEINNA IMU381ZA is an improved, pin-compatible version of the popular IMU380ZA. It's a miniature fully calibrated 6 DOF inertial measurement system designed for demanding embedded applications that require a complete dynamic measurement solution in a robust low-profile package. IMU381ZA provides a standard SPI bus for cost-effective board-to-board communications.

The IMU381ZA-200 has a +/-200dps gyro FSR, and +/-4g accelerometer FSR. The IMU381ZA-400 has a +/-400dps gyro FSR, and +/-8g accelerometer FSR.

Data Sheet
User Manual
# of Axes 6
Product Type Embedded
Footprint 2.4 x 3.7cm
Interface SPI / UART
Connector Style 20-Pin (10×2) 1mm pitch header
Gyro Range +/-200/400deg/sec
Gyro In-Run Bias Stability 6deg/hr
Gyro Scale Factor Accuracy 0.1%
Gyro Bandwidth 5 - 50Hz
Gyro Bias Over Temp 0.5deg/sec
ARW 0.3deg/√hr
Accel Range +/-4/8g
Accel In-Run Bias Stability 0.02mg
Accel Scale Factor Accuracy(-40 to 85 ℃) 0.6%
Accel Bandwidth 5 - 50Hz
Accel Bias Over Temp 5mg
VRW 0.05m/s/√hr


Features and Benefits
  • H/W and S/W compatible with IMU380ZA
  • Complete 6 DOF Inertial System
  • SPI (or UART) Interface
  • Update Rate, 1Hz to 200Hz
  • 1kHz Clock Synch Input
  • Miniature Package, 37 x 24 x 9.5 mm
  • Lightweight < 17 g
  • Low Power Consumption < 250 mW
  • Wide Temp Range, -40C to +85C
  • High Reliability, MTBF > 50k hours
  • Precision Farming
  • Autonomous Vehicles
  • Platform Stabilization
  • Drones
  • Robotics