LPMS-U3 Series: 9-Axis Inertial Measurement Unit / AHRS with USB, RS232, TTL and CAN Connectivity





The LPMS-U3 sensor series is a series of miniature 9-Axis IMU (inertial measurement unit) / attitude and heading reference system (AHRS) with variant communication interfaces like USB, RS232, TTL and CAN-Bus . The unit in this series is very versatile, performing accurate, high speed orientation and relative displacement measurements.

By the use of three different MEMS sensors (3-axis gyroscope, 3-axis accelerometer and 3-axis magnetometer) low-drift, high-speed orientation data around all three axes is achieved. Additionally, temperature and barometric pressure allow accurate altitude measurements. LPMS-U3 series can communicate with the host system either via a USB, RS232, TTL or CAN Bus connection. Depending on the configuration of the sensor, data transfer rates of up to 500Hz can be reached.

This series fits both machine and human motion measurements for size and cost sensitive applications. All sensors contain a 32-bit digital signal processor capable of running all calculations on-board in real-time. For more information on our sensor fusion method please refer to the IMUcore description.

Particularly, the LPMS-CU3 sensor’s CAN bus interface allows connecting the sensor to a larger CAN bus infrastructure. The sensor supports a minimal CANopen implementation as well as a customizable sequential CAN message format.

The parameter settings of all sensors can be freely configured using our LPMS-Control2 software.


Communication interface CAN Bus, USB 2.0 RS232, USB 2.0 TTL, USB 2.0
Communication protocol LpCAN / CANOpen LpBUS/ASCII LpBUS/ASCII
Size 34 x 34.5 x 15.7 mm
Weight 17.6g
Orientation range Roll: ±180°; Pitch: ±90°; Yaw: ±180°
Resolution  0.01°
Accuracy < 0. 5° (static), < 2° RMS (dynamic)
Accelerometer 3 axes, ±20 / ±40 / ±80 / ±160 m/s2, 16-bits
Gyroscope 3 axes, ±125 / ±250 / ±500 / ±1000 / ±2000  / ±4000°/s, 16-bits
Gyroscope noise density 0.005 dps/√Hz
Magnetometer 3 axes, ± 2 / ± 8 gauss, 16-bits
Pressure sensor 300 – 1100 hPa
Data output format Raw data / Euler angle / Quaternion
Data transmission rate up to 500 Hz
Power consumption ~0.021A @ 12 V
Power supply 5 ~ 18 V DC
Connector DB9 female / Micro USB-B (USB)
Case material ABS Plastic shell
Temperature range – 20 to +80 °C
Software C++ library for Windows, LpmsControl2 software


Product Package contents Price
LPMS-CU3 1 x LPMS-CU3 sensor
1 x Micro USB cable
1 x User guide card
1 x Warranty service (1 year)
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LPMS-URS3 1 x LPMS-URS3 sensor
1 x Micro USB cable
1 x User guide card
1 x Warranty service (1 year)
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LPMS-UTTL3 1 x LPMS-UTTL3 sensor
1 x Micro USB cable
1 x User guide card
1 x Warranty service (1 year)
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