alexbriscoe wrote:Try using a free GPIO-port and software serial.
Unfortunately there is no free gpio pin on a ESP-01S. And the Arduino IDE have no way to select "interesting" lines to map.
So I have no solution, but I find difficult to believe that I'm the only one with this problem. There *should* be a way to make the POST silent.
But I guess I'm procrastinating.
I'm prototyping with the ESP-01S and with the module ESP-01M (that strange one with 18 contacts on the edge).
The latter have extra gpio pins but with the adapter board is not so compact as the ESP-01S is.