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DeveloperPermalink Reply by Randy on February 7, 2011 at 4:14am

You need a gps! 

 

I've only worked with the MediaTek purchased from the diydrones store but this GPS at least returns the longitute and latitude in centimeters.  So at a high level all you need to do is have a preset min/max longitude and min/max lattitude and then as you're flying around, if either of the lon or lat goes above the max or below the min, cut the throttle.

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Permalink Reply by Justin Wilson on February 7, 2011 at 4:29am

Have a look here here

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