I have a smart home project in my mind, I have a question about that subject, I will put a sound listening device in the living room, and it will listen to the commands and act accordingly, for example, when I say turn off the light, it will turn it off, but I need to connect this arduino and the lamp with a tool, but what is this tool? I don't know, what tool would you recommend I use?
What is powering the lamp?
You can use a long stick . . .
Seriously, we use Insteon devices controlled by Amazon’s Alexa.
However try Googling Arduino Alexa.
One example:
what's that? a speech recognition board connected to the Arduino ? Alexa ? Siri ? Google ?
To control a basic lamp you need a relay. You can find some cheap 433mhz wireless relay for example or some with Wi-Fi including some compatible with HomeKit for example
Good quality speech recognition runs on a full-computer or on powerful servers "in the cloud". But there is a board called Easy VR that's supposed to recognize a limited number of commands.
You'll need a relay to control AC power. (A relay is an electrically-operated and electrically-isolated switch.) The Arduino can directly-drive a solid state relay but it doesn't put-out enough current to drive a the coil in a regular electro-mechanical relay. But you can buy "relay boards" that have a built-in driver circuit and these are easy to use.
Or there are a few different home automation protocols. Z-Wave and Zigbee are the most popular. The "big companies" are supposed to be standardizing on Zigbee but I'm pretty sure Z-Wave can work with Alexis or Seri. You can build things that interface with these protocols, but you're probably not going to build everything yourself.
The standard home automation networks are separate from a regular LAN or Wi-Fi network, but there is a normally a hub so you can control the home through your home network, over the Internet, or with your phone, etc.
The big advantage of going with one of the standards is that you can replace your regular light switch with a Home Automation Dimmer Switch. That kind of switch works manually or remotely/automatically. That's something you probably can't build yourself, but you can build a controllers/transmitters if you want to build something yourself.
...I've got a Z-Wave system with several controlled lights & outlets but It's not voice activated and it's not connected to the Internet.
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