如何用 iPhone 制作指南针? [英] How to build a compass with the iPhone?

问题描述

在谷歌上搜索后，我问自己:

After some searching on Google, I ask myself:

是否可以用iPhone 3G 的 GPS 传感器?

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

我怀疑这只有在设备移动时才有可能.

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

感谢任何想法.

推荐答案

是的，你是对的，这是唯一的方法.虽然我认为一旦你知道了方向，你就可以通过加速度传感器跟踪手机的微小动作，并准确地绘制出方向，即使原来的动作停止了.

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.

注意:这是过时的信息，在 3G 出来之前是正确的.不幸的是，我无法删除已接受的答案，所以请看下面.

Note: This is outdated info, it was correct up until 3Gs came out.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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