I am exploring the Wifi possibilities of the ESP32 module.
I found a sketch that enables you to switch on/off a LED via the module through an internet browser. I selected pin 2 as output, since this pin is connected to the internal blue LED of the module.
The sketch includes the 'wifi.h' subroutine that sets up a steady wifi link to your local network.
I adapted the sketch and included two counters that shows you the number of switch on/off actions in your browser.
So now I have two-direction data traffic from the ESP32 mini wifi server to the internet browser. It works fine.
Part of the sketch:
This is how it looks like in the browser:
I am impressed by the Wifi capabilities of the small 3$ device.
Update 21 Nov 2020;
I added this Wifi functionality to the CO2 analyser (see also blog 4 Nov 2020).