Currently the Google TV devices only support a limited number of USB accessories. We have been trying for a while now to figure out how to get other devices to work over USB but have not had much success. We are particularly interested in various existing home automation devices. We would like to add home control support to Able Remote, but cannot move forward with this until Google adds the necessary drivers and API’s so that developers can use those in their apps. We have experimented with some solutions like Arduino, but it requires significant technical expertise and isn’t really good for most consumers. We want to have a plug-and-play solution.
The Google TV team has an issue tracker that can be used to file bugs and feature requests. We have created two issues, numbered 16 and 17, which relate to having better support for accessories. Google looks at how many folks star the issues to prioritize them for their product.
So please, star items 16 and 17 so that it gets the Google TV teams attention.