Stream audio from an M5Stack Atom Echo over WiFi. Use as baby monitor, room monitor, or remote mic. No apps, no cloud.
You need: M5Stack Atom Echo + USB-C cable + Chrome or Edge browser
Open the web installer and click Install:
https://pashutk.github.io/esp32-mic-stream/
- Join the "ESP32-Mic-Setup" WiFi network from your phone or computer
- A setup page opens automatically
- Pick your WiFi network and enter the password
Open http://esp32-mic.local/stream.wav in any audio player:
# open in browser
open http://esp32-mic.local/stream.wav
# or VLC
open -a VLC http://esp32-mic.local/stream.wav
# or ffplay
ffplay http://esp32-mic.local/stream.wavIf .local doesn't work on your network, use the IP address instead (shown on the serial monitor or in your router's device list).
That's it. You're done.
| Color | Meaning |
|---|---|
| Purple | Waiting for WiFi setup |
| Blue | Connecting |
| Green | Ready |
| Cyan | Streaming |
| Red | Error |
Hold the button for 3+ seconds to re-enter WiFi setup mode.
Build from source with PlatformIO:
python -m venv .venv && source .venv/bin/activate
pip install platformio
pio run -t upload- 16kHz sample rate, 16-bit mono PCM
- Band-pass filter (80Hz – 3kHz)
- Auto-reconnects if WiFi drops