So the Accessory Development Kit from Google is open-source and based on Arduino, as opposed to the one from Apple which is closed-source, NDA, sign your life to Apple. Here you are.
Accessory Developement Kit a lui Google, e open-source bazat pe Arduino, spre deosebire de cel al lui Apple, care e closed-source, NDA, dedică-te pe viaţă lui Apple. Priviţi.