• The WitMotion WT901B is a 10-axis IMU featuring an MPU9250, accelerometer, gyro, barometer, Kalman filter, UART/I²C interface, and output rates from 0.2 to 200 Hz.
  • WitMotion WT901B IMU: 10-axis, MPU9250, barometer, tilt sensor, ±16g accelerometer, ±2000°/s gyroscope, Kalman filter, UART/I²C, 0.2–200 Hz output.
  • The WitMotion WT901B is a compact 10-axis IMU with MPU9250, featuring accelerometer, gyro, barometer, tilt sensor, Kalman filter, UART/I²C interfaces, and 0.2–200 Hz output.
  • WitMotion WT901B AHRS IMU with barometer, tilt sensor, and high accuracy sensors for navigation and motion tracking applications.
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WitMotion WT901B AHRS (MPU9250) 10-Axis IMU with Barometer & Tilt Sensor, ±16g accelerometer, ±2000°/s Gyro, Kalman Filter, UART/I²C, 0.2–200 Hz Output

WitMotion WT901B AHRS (MPU9250) 10-Axis IMU with Barometer & Tilt Sensor, ±16g accelerometer, ±2000°/s Gyro, Kalman Filter, UART/I²C, 0.2–200 Hz Output

WitMotion

$39.00 USD
$39.00 USD
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Overview

The WitMotion WT901B AHRS (MPU9250) integrates a 3-axis accelerometer, 3-axis gyroscope, 3-axis magnetometer, and a barometer to deliver angle, acceleration, angular velocity, magnetic field, air pressure and height. A 48 MHz MCU with LDO regulation and an in-house fusion + Kalman filter algorithm provides low-noise, stable outputs for robotics, structural monitoring, mobile machinery, and VR/consumer devices.

Key Features

  • 10-axis IMU + barometer with altitude calculation (relative accuracy ±0.06 hPa)

  • Angle precision: X/Y 0.05° (static), 0.1° (dynamic); Yaw 1° (calibrated, low interference)

  • Configurable output 0.2–200 Hz; start-up ≈ 1000 ms

  • Interfaces: UART (4800–230400 bps), I²C (open-drain; needs 4.7 kΩ pull-ups)

  • Supply 3.3–5.5 V, typical 12 mA @5 V, sleep 15 µA

  • Rugged: −40–85 °C operating, 20,000 g shock resistance

  • Free Windows software (real-time curves, logging to TXT), visual magnetic calibration, 3D demo (source available on request)

  • Certifications: Calibration report, RoHS, CE, ISO9001

Roll/Pitch Angle Specifications

Parameter Condition Typical
Range — X: ±180°, Y: ±90°
Inclination Static / Dynamic 0.1° / 0.5°
Resolution Horizontal 0.0055°
Temp Drift −40–85 °C ±0.5–1°

Heading (Yaw) Specifications

Item Condition Typical
Range — Z: ±180°
Resolution Horizontal 0.0055°
Accuracy 9-axis (dynamic/static) 1° (calibrated, away from interference)
6-axis (static) 0.5° integral cumulative error

Sensor Technical Specs

Accelerometer

Range Resolution RMS Noise (100 Hz) Static Drift Temp Drift Bandwidth
±16 g 0.0005 g/LSB 0.75–1 mg-rms ±20–40 mg ±0.15 mg/°C 5–256 Hz

Gyroscope

Range Resolution RMS Noise (100 Hz) Static Drift Temp Drift Bandwidth
±2000 °/s 0.061 (°/s)/LSB 0.028–0.07 (°/s)-rms ±0.5–1 °/s ±0.005–0.015 (°/s)/°C 5–256 Hz

Magnetometer & Barometer

Magnetometer Range Magnetometer Resolution Barometer Range RMS Noise Relative Accuracy
±2 Gauss 0.0667 mGauss/LSB 300–1100 hPa 0.5 Pa-RMS ±0.06 hPa

Module & Electrical

Item Min Default Max
Output Rate 0.2 Hz 10 Hz 200 Hz
Input Voltage 3.3 V 5 V 5.5 V
Operating Current (5 V) — 12 mA —
Sleep Current (5 V) — 15 µA —
Operating Temp −40 °C — 85 °C
Storage Temp −40 °C — 100 °C

Dimensions & Pinout

Size (mm): A 15.24 × B 15.24 × C 2.54 × D 12.7 × E 2
Axes: X→right, Y→up, Z→out of PCB (right-hand rule)

Pins (1–12):
D0, VCC(3.3–5 V), RX(TTL in), TX(TTL out), GND, D1(GPS support), D2(X+ alarm/reset), VCC, SCL(Y+ alarm), SDA(Y− alarm), GND, D3(X− alarm)

Connectivity & Tools

  • UART TX↔RX cross-connect to MCU

  • I²C with 4.7 kΩ pull-ups on SCL/SDA

  • External GPS (NMEA-0183) wiring to build GPS-IMU navigation (outputs latitude/longitude, altitude, heading, speed, displacement)

Software & Dev Kits

Windows PC suite for configuration, calibration (accel/mag/angle/height), bandwidth/rate selection, and raw/curve logging. Example resources for Matlab, Python, Raspberry Pi, STM32, ROS, Arduino, C/C#; CH340/CP2102 drivers; Android app; demo videos; Manual.pdf & Datasheet.pdf.

Applications

IoT sensing, environmental & bridge monitoring, robotics & automation, forklifts and mobile machinery, mining, consumer electronics, VR gadgets.

Details

WT901B AHRS IMU, Accurate AHRS IMU for cost-effective use, including z-axis angle, air pressure, and sensors for height, acceleration, gyroscope, and magnetism.

Cost-Effective AHRS Barometer Provides High Accuracy for Z-Axis Angle, Inclination, and Air Pressure, Plus Acceleration, Gyro Angle, Magnetic Height, and Air Pressure Measurements.

The WT901B AHRS IMU combines accelerometer, gyroscope, magnetometer, and barometer with high resolution, low noise, wide bandwidth, and temperature stability from -40°C to +85°C.

WitMotion WT901B AHRS IMU includes accelerometer, gyroscope, magnetometer, and barometer. Offers ±16g, ±2000°/s, ±2 Gauss, 300-1100hPa. High resolution, low noise, wide bandwidth, temp stability -40°C to +85°C.

The WT901B AHRS IMU provides high-precision orientation with 9-axis sensing, ±180° roll/pitch/yaw, 0.0055° resolution, 1° accuracy, UART/IIC interfaces, 200Hz output, wide temperature range, and 3.3V-5.5V operation.

AHRS IMU WT901B offers ±180° roll/pitch/yaw, 0.0055° resolution, 1° accuracy, 9-axis algorithm, UART/IIC, 200Hz output, -40°C to 85°C temp range, 3.3V-5.5V input.

The WT901B AHRS IMU features MEMS sensors, a 48MHz MCU, LDO power chip, and gold-immersed copper interface, offering ±0.06hPa pressure accuracy, stable fusion algorithm, and compliance with RoHS, CE, and ISO:9001 standards.

WT901B AHRS IMU has MEMS sensor, 48MHz MCU, LDO power chip, and gold-immersed copper interface. It provides ±0.06hPa pressure accuracy, stable fusion algorithm, and meets RoHS, CE, and ISO:9001 standards.

WT901B AHRS IMU, The AHRS IMU WT901B offers high angle accuracy using WitMotion and Kalman filter. Ideal for IoT, VR, robotics, mining, bridges, and environmental monitoring.

AHRS IMU WT901B uses WitMotion algorithm with Kalman filter for high angle accuracy. Suitable for IoT, VR, robotics, mining, bridges, and environmental monitoring.

WT901B AHRS IMU, The AHRS IMU WT901B provides free software, plug-and-play testing, and configurable settings for calibration and precise attitude measurement.

AHRS IMU WT901B offers free, user-friendly software, plug-and-play test fixture, and configurable settings for calibration, output, and precise attitude measurement.

The WT901B AHRS IMU provides real-time data, storage, TXT export, 3D visualization, and precise monitoring with acceleration, angular velocity, magnetic field, and compass features.

WT901B AHRS IMU offers real-time data measurement, powerful storage and export to TXT files, and intuitive 3D motion visualization. Features include acceleration, angular velocity, magnetic field data, and compass display for precise sensor monitoring.

WT901B AHRS IMU, The AHRS IMU WT901B provides magnetic calibration, MCU connections, GPS compatibility, and outputs navigation data including position, heading, speed, and displacement.

AHRS IMU WT901B offers visual magnetic calibration, TTL/IIC MCU connections, GPS compatibility. Outputs latitude, longitude, altitude, heading, speed, displacement for navigation.

WT901B AHRS IMU, Development Kits come with manuals, software, drivers, sample code for various platforms, and demo videos.

Development Kits include manual, datasheet, Windows software, CH340 & CP2102 drivers, sample code for Matlab, Python, Raspberry Pi, STM32, ROS, Arduino, C++/C#, and demo videos for Android and PC.

The WT901B AHRS IMU is rigorously tested with 3-axis turntable, vibration, temperature extremes, aging, and high-temperature evaluations.

WT901B AHRS IMU undergoes rigorous testing: 3-axis turntable, 6 DOF vibration, extreme temperatures (80°C to -40°C), 72-hour aging, and high-temperature evaluations.

The WT901B AHRS IMU has dimensions of 15.24×15.24×2.54 mm, features a 12-pin layout with analog/digital I/O, UART, I2C, and alarm outputs, and defines axial directions using the right-hand rule: X right, Y up, Z outward.

WT901B AHRS IMU dimensions: 15.24×15.24×2.54 mm, 12-pin layout with analog/digital I/O, UART, I2C, and alarm outputs. Axial directions defined by right-hand rule; X right, Y up, Z outward.

WT901B AHRS IMU, The WITMotion AHRS IMU WT901B includes a sensor module, catalog, and promo card with QR codes for documentation and support.

AHRS IMU WT901B from WITMotion includes sensor module, catalog, promo card with QR codes for docs and support.

 

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