Apple opens HomeKit protocol specification to all developers

A quick tweet from a Seattle-based developer today noted that Apple's just made it a lot easier for developers or hobbyists to work on creating HomeKit-controlled devices. Victor Ilyukevich (@yas375) just tweeted that the "HomeKit protocol spec is now open to all devs! Can build a smart device using Arduino and control it via HomeKit without getting MFi license."

In follow-up responses, Ilyukevich pointed out the location of the documentation, which is for "non-commercial use" only. This really opens up HomeKit to experimenters or those who are considering creating a HomeKit product but want to test it fully prior to going commercial. 

The spec is a 256-page PDF that covers just about every type of sensor or product you'd ever want to make.