00:00Want sound sensor for microcontroller under $5?
00:03Looked through junk so you skipped bad ones.
00:06Here top 5 picks right now.
00:09First, classic KY-038 style module.
00:13Costs $1.20.
00:15Has analog and digital out, onboard potentiometer for trigger threshold.
00:20Sold over 4,500 units.
00:23Crude for audio recording, but perfect dirt cheap clap switch or noise alarm.
00:27Next, max 4,466 breakout.
00:32286.
00:34Real op-amp onboard built for audio, not bare comparator.
00:38Output clean, gain adjustable via back trimmer.
00:42Great bridge between basic sound detection and actual frequency analysis on Arduino ADC.
00:48Third, Estardyne INMP441 MEMS mic.
00:53344.
00:54Outstanding value for ESP32.
00:57Fully digital I2S interface, zero analog noise floor issues.
01:02Clean audio capture for voice recognition, tiny footprint, high precision.
01:07Best low noise digital pick here.
01:10Fourth, alternate vendor INMP441 board.
01:15478.
01:16Same solid omni-directional MEMS hardware, low-power draw, direct 24-bit I2S data stream.
01:23Costs $1 more than previous listing, buy if closer warehouse or faster shipping needed.
01:29Fifth, max 9814 board with autogame control.
01:33Buck 60.
01:35Absolute steel.
01:37Built-in AGC keeps loud shouts from clipping, boosts quiet whispers automatically.
01:42Best analog choice for recording voice or room audio without manual gain babysitting.
01:48Links in description below.
01:50Hit like, subscribe for more hardware tests.
01:53Next build soon.
01:55Next build soon.
