Access Magnetometer Compass values via Unity Remote 4 for Android

I'm developing for Android and use the Unity Remote 4 App to interact with the sensors and to see the Game-View immediately on the smartphone. I tested with Samsung Galaxy S3 and Google Nexus 5. If i build and run the application, the compass/magentometer values are accessible. But over the Remote-App the magnetometer values are always 0/not accessible. Building the application all the time instead of using the remote function would take too much time. I checked if other sensor values are accessible. The gyroscope data is shown over the remote app. So it seems to be special problem with the compass sensor.

I'm using Unity 5.2.1f1

I also set the permissions in the start function: void Start() { Input.location.Start(); Input.compass.enabled = true; Input.gyro.enabled = true; } void OnGUI() { GUILayout.Label("rawVector_z: " + Input.compass.rawVector.z); }

Related issues I found:

• http://answers.unity3d.com/questions/843516/compass-returns-all-zeros.html

• http://feedback.unity3d.com/suggestions/unity-remote-compass-values

Steps to reproduce it:

• Create empty GameObject

• Create C#-Script and attach it to the GameObject

• Paste the following code: (adjust class name)

using UnityEngine; using System.Collections;

public class getCompassValues : MonoBehaviour {

 public float gyro_value;
 public float compass_value;
 // Use this for initialization
 void Start () {
     Input.location.Start();
     Input.compass.enabled = true;
     Input.gyro.enabled = true;

 }
 
 // Update is called once per frame
 void Update () {
     gyro_value = Input.gyro.rotationRate.y;
     compass_value = Input.compass.rawVector.z;

 }

 void OnGUI()
 {
     GUILayout.Label("rawVector_z: " + Input.compass.rawVector.z);
     GUILayout.Label("Gyroscope z: " + Input.gyro.rotationRate.z);
 }

}

• Get Unity Remote 4 for Android. Enable Unity Remote on your PC via Edit->Project Settings->Editor: Under Unity Remote choose "Any Android Device" in the first row.

• Connect the Android Device via USB, start the Remote App and press Play.

• You should see the gyrovalues over the GUI and also over variable in the editor, but the compass value is always zero. Sometimes the gyro value is also 0, then stop and press play again.

Thanks! regards Simon