Tiny microphone and sound card for a Raspberry Pi Zero? There’s a lot of events you can sense around the house just by recording sound and analyzing the results.
Failed search.
Or so I say.
20180115/DuckDuckGo raspberry pi zero cheap microphone
20180115/https://learn.adafruit.com/introducing-the-raspberry-pi-zero/audio-outputs
20180115/https://www.raspberrypi.org/blog/tinkernut-diy-pi-zero-audio/
20180115/https://learn.adafruit.com/adding-basic-audio-ouput-to-raspberry-pi-zero/pi-zero-pwm-audio
20180115/DuckDuckGo raspberry pi zero cheap electret microphone
20180115/https://www.reddit.com/r/raspberry_pi/comments/5inj0r/tiny_ranged_mic_for_raspberry_pi_zero/
20180115/https://www.reddit.com/r/raspberry_pi/comments/5jlail/tiniest_sound_card_mic_for_rpi_zero/