Is there a device, or is it yet possible to have Siri send RS232 commands. For instance "Hey Siri, turn on my projector", and have a RS232 command sent through some sort of hub to my projector? I feel that if Homekit hopes to control things like TV and Projectors, they will need to have a way to communicate serial commands.
Any thoughts appreciated.
If you're trying to make a HomeKit product that supports communicating with RS232, you'll have to join MFi to get the protocol spec and then create an accessory to support this.
If you just want to make something that only you'll use, there are a few projects on GitHub (https://github.com/nfarina/homebridge) allows you to write program to bridge your projector to HomeKit.
If you want to control accessories which are not HomeKit compatible, you need a HomeKit bridge which translates commands from the HomeKit Accessory Protocol (HAP) to the RS232 protocol.
