New project: which solution is correct?

[pinkfloyd11]

Hi Phil and all of you
I should broadcast audio in a large 100m x 100m environment (company warehouse) for 200 max client receiver.

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FIRST IDEA (Not yet tested because not have hardware)

1. read audio from PMOD audio card input
2. start server on esp32-audio.local

#include <WiFi.h>
#include <ESPmDNS.h>
#include "AudioTools.h"
#include "AudioCodecs/CodecHelix.h"
#include "HttpServer.h"
#include "HttpExtensions.h"

// Configurazione Wi-Fi (Station mode)
const char* ssid = "Your_SSID";
const char* password = "Your_PASSWORD";

// Server HTTP per lo streaming
WiFiServer wifiServer(80);
HttpServer server(wifiServer);
ExtensionMusicFileStream sdMp3("/music/mp3", "/TomWaits", "audio/mpeg", ".mp3", 512, 13);

// I²S Stream
I2SStream i2s;

void setup() {
    Serial.begin(115200);
    AudioToolsLogger.begin(Serial, AudioToolsLogLevel::Info);

    // Connessione alla rete Wi-Fi come station
    WiFi.begin(ssid, password);
    Serial.print("Connessione a Wi-Fi");
    while (WiFi.status() != WL_CONNECTED) {
        delay(500);
        Serial.print(".");
    }
    Serial.println();
    Serial.print("Connesso! IP: ");
    Serial.println(WiFi.localIP());

    // Avvia il responder mDNS per "esp32-audio.local"
    if (MDNS.begin("esp32-audio")) {
        Serial.println("mDNS responder avviato: http://esp32-audio.local");
    } else {
        Serial.println("Errore avviando mDNS");
    }

    // Configura I²S in ricezione (RX_MODE)
    auto cfg = i2s.defaultConfig(RX_MODE);
    cfg.pin_bck  = 14;
    cfg.pin_ws   = 15;
    cfg.pin_data = 22;
    i2s.begin(cfg);

    // Configura il server HTTP per lo streaming
    server.rewrite("/", "/music/mp3");
    server.addExtension(sdMp3);
    server.begin();
    Serial.println("Server HTTP avviato sulla porta 80");
}

void loop() {
    server.doLoop();
}

Doubt: How many client I can serve???

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SECOND IDEA (Not yet tested because not have hardware)

Acquire web radio server account (https://www.seeoux.com/web-radio) for transmit and create clients receiver audio streamer with https://www.pschatzmann.ch/home/2021/10/19/a-versatile-streaming-mp3-player/

What do you think?

Many Thanks
Giuseppe

[pschatzmann]

Sounds like a big challange to set up a WiFi network infrastructure that supports the needed range and bandwith for 200 clients!

I would suggest to look into some infrastructure that is scaling where 1 sender can be received by many receivers.