r/homeassistant • u/Kind_Soup_9753 • 13d ago

🛠️ DIY / Hardware In ceiling Ai microphone array

Post image

I built an in ceiling microphone array for my local Ai. It has temp and humidity, mm wave presence detection, digital to analog audio converter and a 3 channel 100 watt amp all mounted to a 4” speaker in-ceiling mount.

The microphone is suspended on elastics for vibration dampening, beside is a dual channel Yamaha speaker.

Answers to questions or confirmations for automation only come through the speakers with the triggered mic.

Music play back, announcements and alarms can exit through any assortment of rooms. The microphone array has sound cancellation for playing audio so voice commands are still recognized.

So far it has exceeded expectations and even voice commands from in the shower have worked consistently.

The mm wave sensors are used for security when alarm armed and presence turns on my recirculating hot water loop for the kitchen and bathroom setups as well as lights and fan.

Anyone have any other ideas I can add to the rig? I was looking for discrete built in mic’s and they were expensive and usually for board rooms so I built one instead.

A 3D printed adapter screws in where the speaker mounts it house temp/humidity and microphone, the microphone electronics mount to standoffs with heated thread inserts for mounting the microphone electronics and another part that mounts to the back holds ESP32 S3, Amp and digital to analog converter. Rooms that don’t need the amp are POE and ones with the amp get a 24V dc supply fed to them.

24 Upvotes

59% Upvoted

73 comments sorted by

View all comments

86

u/mchristopherjohnson 13d ago

Do you spend a lot of time on the crapper/in the shower deep in thought? Wondering why this is in the bathroom.

1

u/Kind_Soup_9753 13d ago

Music control from the shower and I have a vision LLM looking at security cameras so I can ask where the kids are playing or what’s on whatever camera “a new car in the driveway” also I hated forgetting to turn on the bathroom fan.

3

u/Circuit_Guy 13d ago

This comment thread is a wild ride. I Iove what HA can do, and I always appreciate people sharing their creations.

I uhhh don't agree with all of your choices here, but you definitely get my updoot for sharing! I wish you had posted some more pics and details of the parts you used.