What modules should I use if I want to transfer serial data between two controllers. Using some AT commands to start is allright but after that the connection should act like a serial cable. Is this possible? In my opinion Web/HTML server and client is too much here.
What about software or AT commands in the 8266 modules. I really would like to program the controller and not the 8266 modules.
LMI1:
after that the connection should act like a serial cable. Is this possible? In my opinion Web/HTML server and client is too much here. ...........I really would like to program the controller and not the 8266 modules.
"Wireless serial" is a term used for bluetooth which, in the absence of better explanation, may be all you need.
That is quite close. For paid job some of the devices they sell would be ideal. But here I don't need RS232 levels and some modules like 8266 are very cheap.