@vikey , I know your pain.. I passed that way.. I am kind on the mid way out of the bush.. still lot of things that I am not understand very well.. ie how to use the new my sensor library.. this need a lot time reading and testing..
I am going to explain what I did to get what i have so far.
1- Install the arduino core for the esp8266 (read all the detail on how add the esp8266 core to arduino) Download link
2- I am using Mysensor v1.5 you may download the whole thing from here install the library as usual "add zip library" .
3-Next step is connect your ESP8266 to your PC and using arduino ide select in tools-->boards -->Generic ESP8266 module.
4- Next step is to open the sketch ESp8266gateway : File-->examples-->Mysensors-->Esp8266gateway.
5- Inside the code you need to edit your wifi name and password.
6-I have added to that sketch a line to put a fixed ip adress to my ESP8266 . The new My sensor library do not need all that.. but did have time to try once again to get it working..
so I place le line of code below on the Setup(); after the hw_init();
WiFi.config(IPAddress(192,168,xx,xx), IPAddress(192,168,x,x), IPAddress(255,255,255,0));
7-Next step is upload the code to the ESP8266, you may connect to the ESP8266 using the serial monitor and check if the module is connected to your wifi
8- use any example within my sensor library examples, the one work perfect is the Dallastemperatura Sensor example here
