Schematics and original code created by Julian Schroeter at hackster.io. Forked by MinePro120.
- Deep sleep when inactive
- Better network handling
- 16kHz sampling rate
- 12-bit resolution
- Reduced noise
- Status LED
Insert the credentials of your Wi-Fi network in the sketch, as denoted by the "Change me" comments. Upon uploading, the following command can be used to listen to the stream (tested on UNIX):
nc -l 0.0.0.0 6120 | play -r 16k -e unsigned-integer -b 16 -t raw -, that utilises Netcat and SoX.
- Increase the "AUDIO_BUFFER_LENGTH" as much as possible to avoid noise created by using the Wi-Fi (and possibly save battery power).
- Using SoX, you can record the streamed audio and apply various effects (like noise reduction). See the SoX manual for more details.
- VLC media player can be used instead of SoX.
- A hotspot can be used when no router is available (the Wi-Fi card must support "master" mode).
- Alternatively, the ESP32 could create a SoftAP at the expense of increased power consumption.
The software provided above is licensed under the GNU GPL v3.