# Absolute orientation sensor module, 9 axes, GY-BNO055, IIC, Serial, 3-5V

- Page: https://sigmanortec.ro/en/absolute-orientation-sensor-module-9-axes-gy-bno055-iic-serial-3-5v
- Price: 103.70 RON
- Availability: In stock; 1-2 zile
- Reference: 88276 · EAN: 5940849801978
- Category: Mechatronics and IoT > Sensors and Modules > Motion and Orientation Sensors
- Specifications: Supply voltage: 3 - 5 V; Integrated circuit: BNO055; Communication interface: I2C, Serial; Number of axes: 9
- Updated: 2026-09-23
- Shop: [Sigmanortec.ro](https://sigmanortec.ro/en/llms.txt)
- Prices: RON, VAT included; prices and stock as of 2026-10-22 05:45 (Europe/Bucharest)

## Description

Compact module for measuring absolute orientation on 9 axes, ideal for robotics, navigation, and wearable devices. It performs sensor fusion directly on-chip for stable and fast data, and includes an accelerometer, gyroscope, and magnetometer with an ARM Cortex-M0+ processor. It operates at 3-5V and communicates easily via I2C or UART, compatible with Arduino, ESP32, STM32, and Raspberry Pi.
The GY-BNO055 module is a compact and intelligent solution for measuring absolute orientation in three-dimensional space, intended for robotics projects, navigation systems, wearable devices, and industrial applications that require high-precision motion data. What sets it apart from conventional sensors is its ability to perform sensor fusion directly on-chip, eliminating the need for complex algorithms implemented in software.
The module integrates a 14-bit triaxial accelerometer, a 16-bit triaxial gyroscope with a measurement range of up to 2000 degrees per second, a triaxial geomagnetic sensor, and an ARM Cortex-M0+ microcontroller running Bosch Sensortec fusion software, all in a single 3.8mm x 5.2mm x 1.1mm. LGA package. Power supply is flexible, supporting voltages between 3V and 5V thanks to the internal voltage regulator, making it directly compatible with Arduino UNO, Arduino Mega, STM32, ESP32, and other popular development platforms without additional voltage adaptation circuits.
Communication is carried out via standard I2C or UART protocol, and the I2C interface can be configured for HID-I2C, turning the module into a plug-and-play sensor for Windows 8.0 and 8.1. devices. The SCL\Rx and SDA\Tx pins are dual-purpose, functioning either in I2C mode or UART mode depending on the configuration of the BOOT and REST pins. The module’s compact dimensions of 12mm x 21mm make integration into tight spaces easier.
The BNO055 can provide the following types of data: absolute orientation as an Euler vector at 100Hz, absolute orientation as a quaternion at 100Hz for more precise calculations, angular velocity in rad/s at 20Hz, total acceleration vector (gravity + linear motion) in m/s² at 100Hz, magnetic field strength in microtesla at 100Hz, linear acceleration (without the gravitational component) at 100Hz, gravitational vector at 100Hz, and ambient temperature in degrees Celsius at 1Hz.
Specifications:
Main chip: BNO055 (original, new)
Power supply: 3V - 5V DC (internal LDO regulator)
Communication interface: standard I2C / UART
Accelerometer: triaxial, 14-bit
Gyroscope: triaxial, 16-bit, ±2000 °/s
Magnetometer: triaxial, geomagnetic
Internal processor: ARM Cortex-M0+ (Bosch Sensortec fusion)
Euler orientation frequency: 100Hz
Quaternion frequency: 100Hz
Angular velocity frequency: 20Hz
Acceleration frequency: 100Hz
Magnetic field frequency: 100Hz
Temperature frequency: 1Hz
Module dimensions: 12mm x 21mm
Chip dimensions: 3.8mm x 5.2mm x 1.1mm, 28-pin LGA
Compatibility: Arduino UNO/Mega, STM32, ESP32, Raspberry Pi (3.3V logic)
Pinout:
Pin
Signal
Description
VIN
Power supply
3V - 5V DC
GND
Ground
Common ground
SCL / Rx
I2C / UART
I2C clock line or RX for UART
SDA / Tx
I2C / UART
I2C data line or TX for UART
ADD
Address
I2C address selection (GND = 0x28 / VCC = 0x29)
INT
Interrupt
Interrupt output (active high)
BOOT
Boot mode
Startup operating mode selection
REST
Reset
Chip reset (active low)
Usage:
Connect the VIN pin of the module to the 3.3V or 5V pin of the development board and the GND pin to common ground.
For I2C mode: connect SCL\Rx to the board’s SCL pin (e.g. A5 on Arduino UNO, GPIO22 on ESP32, PB6 on STM32) and SDA\Tx to the SDA pin (e.g. A4 on Arduino UNO, GPIO21 on ESP32, PB7 on STM32).
For UART mode: connect SCL\Rx to the development board’s TX and SDA\Tx to the board’s RX. Configure the BOOT and REST pins accordingly to enable this mode.
Leave the ADD pin unconnected or connected to GND for the default I2C address 0x28. Connect it to VIN for address 0x29 if you are using two modules on the same I2C bus.
The INT pin can be connected to a digital pin on the board to detect motion events via hardware interrupts, reducing processor load.
Install the "Adafruit BNO055" library from the Arduino IDE Library Manager (Sketch > Include Library > Manage Libraries).
Also install the "Adafruit Unified Sensor" library, which is required as a dependency.
Upload the test sketch, compile it, and upload it to the board.
Open the Serial Monitor at 115200 baud to view orientation data in real time.
Place the module on a flat surface for initial calibration. Rotate it slowly in all directions to calibrate the magnetometer (figure-eight motions in the air).
Check the calibration status using the sys, gyro, accel, and mag values returned by the getCalibration() function. A value of 3 for each indicates full calibration.
Connection example:
Module pin
Arduino UNO
ESP32 DevKit V1
Description
VIN
5V
3V3 or VIN
Module power supply
GND
Common ground
SCL / Rx
A5 (SCL)
GPIO22
I2C clock / UART RX
SDA / Tx
A4 (SDA)
GPIO21
I2C data / UART TX
ADD
GND or 5V
GND or 3V3
I2C address selection
INT
D2
GPIO4
Optional interrupt
BOOT
Not connected
Boot mode selection
REST
D3 or button
GPIO5 or button
Optional reset