(Sory if this not the topic?)
Im having troubles using bluetooth module (BLE 4.0, zs-040).
I changed the BAUD to 38400 and now i just cant turn it back to 9600 (AT+BAUD4). Every time i write the command it return an ilegible answer(IMAGE1).
And if i set the serial monitor at 38400 the answer is the same (even changing (9600) to (38400))
Thanks for your time!