# IMU SENSOR

The IMU sensor used in the MIO is a combination of a high precision 3 axis gyroscope sensor and a 3 axis accelerometer sensor. IMU board is being heated where the temperature inside is controlled around 50°C with 0.2°C accuracy. Thanks to this feature, gyro calibration is no longer required in most situations. The MIO controller has a special algorithm to provide attitude estimation based on input data from the IMU sensor. This attitude estimation helps the controller to command motor output to compensate for camera movement.

<figure><img src="/files/mPnuurVAZPqC5n5x6cQT" alt=""><figcaption></figcaption></figure>

## GYPRO CALIBRATION

Thanks to temperature controlled and heated IMU, gyro calibration is not necessary as the gyro was calibrated at the factory and the temperature inside IMU remains constant around 50 degrees. However, if you notice drift during operation in extreme weather (below -20C or above 50C) please re-calibrate the gyro.&#x20;

**CALIB AT STARTUP:** this feature is not available on the MIO

{% hint style="info" %}
After Gyro Calibration, Gyro Offset X, Y, Z will change to a new value depending on the temperature.
{% endhint %}

<figure><img src="/files/0EehQeFPgtnrNcc2l0iU" alt=""><figcaption></figcaption></figure>

## ACCELEROMETTER CALIBRATION

{% hint style="info" %}
Do not use this function, please contact Gremsy Support Engineers. The accelerometer sensor was calibrated properly at the factory to achieve accurate horizon level with special and precise equipment. Users do not need to do this unless it’s required for troubleshooting.
{% endhint %}

<figure><img src="/files/YpueP3lkaIjT14s2cEak" alt=""><figcaption></figcaption></figure>


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.gremsy.com/gimbals/mio/gimbal-configuration/imu-sensor.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.