Unity3D script for rotating camera with a phone's gyro. Includes smoothing and initial offset. Edited from https://forum.unity3d.com/threads/sharing-gyroscope-camera-script-ios-tested.241825/

GyroCamera.cs

using UnityEngine;
using System.Collections;

public class GyroCamera : MonoBehaviour
{
    // STATE
    private float _initialYAngle = 0f;
    private float _appliedGyroYAngle = 0f;
    private float _calibrationYAngle = 0f;
    private Transform _rawGyroRotation;
    private float _tempSmoothing;

    // SETTINGS
    [SerializeField] private float _smoothing = 0.1f;

    private IEnumerator Start()
    {
        Input.gyro.enabled = true;
        Application.targetFrameRate = 60;
        _initialYAngle = transform.eulerAngles.y;

        _rawGyroRotation = new GameObject("GyroRaw").transform;
        _rawGyroRotation.position = transform.position;
        _rawGyroRotation.rotation = transform.rotation;

        // Wait until gyro is active, then calibrate to reset starting rotation.
        yield return new WaitForSeconds(1);

        StartCoroutine(CalibrateYAngle());
    }

    private void Update()
    {
        ApplyGyroRotation();
        ApplyCalibration();

        transform.rotation = Quaternion.Slerp(transform.rotation, _rawGyroRotation.rotation, _smoothing);
    }

    private IEnumerator CalibrateYAngle()
    {
        _tempSmoothing = _smoothing;
        _smoothing = 1;
        _calibrationYAngle = _appliedGyroYAngle - _initialYAngle; // Offsets the y angle in case it wasn't 0 at edit time.
        yield return null;
        _smoothing = _tempSmoothing;
    }

    private void ApplyGyroRotation()
    {
        _rawGyroRotation.rotation = Input.gyro.attitude;
        _rawGyroRotation.Rotate(0f, 0f, 180f, Space.Self); // Swap "handedness" of quaternion from gyro.
        _rawGyroRotation.Rotate(90f, 180f, 0f, Space.World); // Rotate to make sense as a camera pointing out the back of your device.
        _appliedGyroYAngle = _rawGyroRotation.eulerAngles.y; // Save the angle around y axis for use in calibration.
    }

    private void ApplyCalibration()
    {
        _rawGyroRotation.Rotate(0f, -_calibrationYAngle, 0f, Space.World); // Rotates y angle back however much it deviated when calibrationYAngle was saved.
    }

    public void SetEnabled(bool value)
    {
        enabled = true;
        StartCoroutine(CalibrateYAngle());
    }
}

Thank you for sharing this. I extended it to include X and Z axis when calibrating so you can re-center in any direction and at a variable speed.
https://gist.github.com/blevok/0b5f4c821f019dd1d74fce98c9de3d5f

Goooooooood

@kormyen I like your script, but is there away to avoid that abrupt snap on the start? Which I assume has to do with the calibration. Maybe do it like threejs does? Take a look at this, no snapping. If you find a way to remove the initial snap your script will be perfect!

Thank you!!! Spent like 40$ on plugins before I found this, this should be included in unity gyro sample!

you are the best man!

This code is amazing!
Thank you!

Thanks a lot for the solution

@that1phillips
How exactly did you manage to stop the jittering?

It's in controlling the slurp. What I've learned is that it also depends on the hardware in the phone. Some phones do better than others. I still haven't finished the project, but have had over 250 people testing it on the android store.

…

On Wed, Apr 7, 2021, 12:22 AM BranCo2 ***@***.***> wrote: ***@***.**** commented on this gist. ------------------------------ @that1phillips <https://github.com/that1phillips> How exactly did you manage to stop the jittering? — You are receiving this because you were mentioned. Reply to this email directly, view it on GitHub <https://gist.github.com/a1e3c144a30fc26393f14f09989f03e1#gistcomment-3696097>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AK6M5MVZ56BEN3WS4NF7WC3THPMXHANCNFSM4HPSRXJQ> .

@that1phillips
Hi. You mentioned controlling the slerp? I'm not very experienced with coding sorry. Can you please give me an example of what you mean?

Is there a way to lock every rotation except Y axis?

Nice project broo

How to I lock the Y axis rotation