Has anyone done anything with out using GPS. Before you criticize me and ask why I would ever want to do that...I want to use the ArduPilot to power a small submarine where GPS is not readily available. I've been reading documentation and it seems that the ArduPilot is very dependent on GPS. I'm wondering if it possible to do without it.
Thanks
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Yes you can use it without GPS. GPS only brings location information and on some cases people uses it to provide altitude data. One thing that you really do need with ArduPilot is either ArduIMU or IR sensors, in your case I would say ArduIMU is needed. Or some other Gyru/Acc packet but then you need to do some programming to get them to work.
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--jp