I took conventional advice and purchased a pair of nodemcu 1.0 boards and have followed the instructions to use the arduino ide to program it. I've been successful in getting the "blink" program to work but I now have no idea of how to proceed to get to my goal. There is a huge amount of information/programs for creating servers, etc. but nothing on actual connection to a serial port. I am not looking for a detailed answer, but some hints as to how to get there. Please help. Additional information provided on request.
Paul