Topic: ESP8266 with Arduino as portexpander?
I have a project where I want to use RemoteXY on an ESP8266. But the ESP has not enough inputs for my project. Also i need 3 serials for 3 bluetoothmodules. For that reason i Plan to attach an arduino mega2560 as expander.
What is a good idea to connect the arduino? Over serial? In the mega, there would only be software serial free. I need only Data from arduino to the esp, so could Software serial be fast enough?
Any better idea?