如何与iPhone建立指南针？ [英] How to build a compass with the iPhone?

问题描述

在谷歌搜索之后，我问自己：

是否可以用iPhone
构建一个指南针（简单显示标题/方向） 3G的GPS传感器？

我怀疑，这是唯一可能的，如果设备在移动。

任何想法都会受到赞赏。

解决方案

是的，您是对的，这是唯一的方法。尽管我认为一旦知道了方向，即使原始动作停止，也可以跟踪加速度传感器发出的小动​​作，并准确地确定方向。

注意：这是过时的信息，这是正确的，直到3Gs出来。不幸的是，我无法删除接受的答案，所以请看下面。

After some searching on Google, I ask myself:

Is it possible to build a compass (simple showing the heading/direction) with the iPhone 3G's GPS sensor?

I have the suspicion, that this is only possible, if the device is moving.

Any ideas are appreciated.

解决方案

Yes, you are right, that's the only way. Although I think once you know the direction, you could track small movements of the phone from acceleration sensors and draw the direction accurately even if the original movement stops.

Note: This is outdated info, it was correct up until 3Gs came out. Unfortunately I can't delete accepted answer so just look below.

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