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4

An Arduino can do this, but this is a very advanced problem on an Arduino. It sounds like perhaps you need something more plug-and-play. In that case, buy a Raspberry Pi 4 starter kit and a USB microphone, and start working on the problem from there. The Raspberry Pi 4 is a Linux computer, so everything you do will be writing scripts or programs (in any ...


3

WiFi with WPA2 (which is what you get when you specify a password) is encrypted. As long as your HTTP requests only go over that connection and nowhere else then yes, they are encrypted and as secure as WPA2 (which isn't unbreakable, but not easy to break). HTTPS adds encryption for use over the internet which in general is not encrypted.


3

If you provide a password for you network, it will be encrypted. Thats the point of the password. When you look at the function description in the WifiAP.cpp file of the Wifi class for the ESP32, the description suggests, that it will be encrypted with WPA2, which is currently the standard in Wifi encryption. (Though that can depend on the actual library, ...


3

You can use a ESP32 with built-in WiFi and Bluetooth. Record a wave-File to a SD-card using this library, send it over Blutooth and play it on the PC with a little script.


2

In order to connect to Wifi from ESP32 and other boards, the WiFi connection needs to be 2.4GHz, wireless mode must be legacy. It cannot be set to Auto or N only. Go to your router box web page, and change this setting under Advanced Settings > Wireless. The only code required to connect is. void loop() { ... WiFi.begin(MY_SSID, MY_PWD); } void setup(...


1

The issue lies with Wemos Module where it only outputs 3.3V which insufficient to 5V Relay so this can be solved by implementing 2N2222 Transistor as per schematic below.


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