I want to turn on a little engine with the iphone
I mean, using the 30-pin cable and connecting some cables to the engine.
Which is the code I have to write to do that?
And the most important, is that possible or is just a dream?
I want to turn on a little engine with the iphone I mean, using
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Perhaps you want the External Accessory Framework Reference?
Also see Apple’s landing page for accessory developers.