Accelerometer

private const float AccelerometerUpdateInterval = 1.0f / 60.0f;
private const float LowPassKernelWidthInSeconds = 0.175f; // .75 is perfect for remote.
private const float LowPassFilterFactor = AccelerometerUpdateInterval / LowPassKernelWidthInSeconds;
private const float MaxAccelerometerValue = 0.175f;
private Vector3 lowPassAcceleration = Vector3.zero;

private void Awake()
{
    lowPassAcceleration = Input.acceleration;
}

private void Update()
{
    lowPassAcceleration = Vector3.Lerp(lowPassAcceleration, Input.acceleration, LowPassFilterFactor);
    float t = lowPassAcceleration.x / MaxAccelerometerValue;
}