The best tutorial I've seen is this one: https://www.instructables.com/DIY-Smart-Home-Automation/
The closest I've seen to buy it is this: https://www.control4.com/solutions/products/wireless-keypads
(They also have the smart lights and the base unit.) Pricey, and doesn't use tablets but rather configurable pads.
I suspect most consumers don't want the uber-flexible controller, so if that's a must-have then I think you're going to need to build it.
The closest I've seen to buy it is this: https://www.control4.com/solutions/products/wireless-keypads
(They also have the smart lights and the base unit.) Pricey, and doesn't use tablets but rather configurable pads.
I suspect most consumers don't want the uber-flexible controller, so if that's a must-have then I think you're going to need to build it.