I am trying to familiarize with the simplest configuration of the esp8266 by using the esp12e version and I am facing an issue with the serial communication.
What I do not get is why can I use Serial.print() when the esp12 is soldered to the nodemcu development board and I cannot when directly interfacing with an usb/serial converter (soldering the wires and so on)
Do you know how to do?
Please let me know if it is not clear
Many thanks for your help