rhasspy

You can semi-DIY it already with Rhasspy + your choice of home automation stack (HomeAssistant or what-have-you). Rhasspy is probably what you're looking for. https://github.com/rhasspy/rhasspy Was discussed last year: https://news.ycombinator.com/item?id=33705938 My only real issue in setting it up and running it has been finding appropriate microphones.

I wrote a toy one which works well enough for me: https://github.com/iamsrp/dexter It'll run on a cheap Ubuntu box if you can't get a Pi. And lots of people seem to like Rhasspy too: https://github.com/rhasspy/rhasspy which does rather look more polished than my efforts (though I've not tried it myself).

I tried Amazon's Alexa, the top end model with a display. Often it would taunt you about new/interesting things on the screen, but I could never get them to work. I'd had to memorize things to get even the basics working. Ended up unplugging it. However Google's Assistant in comparison worked great, no memorization, and very useful. Sure time, weather, set timers, and alarms worked great with a very flexible set of natural language queries. Even more complex things like what will be the temperature tomorrow at 10pm, simple calculations and unit conversions. But also things like IMDB like queries about directors, actors, which movies someone was in, etc generally worked well. It seemed to really understand things, not just "A web search returned ...". Even more complex things like the wheelbase of a 2004 WRX would return an answer,

https://rhasspy.readthedocs.io/ https://github.com/rhasspy/rhasspy

If you're interested in getting more quickly and WANT to write software, you can have the Raspberry Pi control most televisions over HDMI-CEC using libcec [0], and then you just need the voice recognition stuff mentioned above (Rhasspy [1]). I had to do something similar (minus voice controls) to keep my existing remote's volume controls working with an analog volume device [2]. [0] https://github.com/Pulse-Eight/libcec [1] https://github.com/rhasspy/rhasspy [2] https://rkeene.org/viewer/tmp/cec-volume.cc.htm

Author here. Thanks to everyone for checking out voice2json! The TLDR of this project is: a unified command-line interface to different offline speech recognition projects, with the ability to train your own grammar/intent recognizer in one step. My apologies for the broken packages; I'll get those fixed shortly. My focus lately has been on Rhasspy (https://github.com/rhasspy/rhasspy), which has a lot of the same ideas but a larger scope (full voice assistant). Questions, comments, and suggestions are welcomed and appreciated!

If you're interested in projects on a Pi then you might just be interested in this: https://github.com/rhasspy/rhasspy It's from the same author.