does it possible that i use arduino uno to get the data of my sensor and send the data to node mcu. Then node mcu do the internet stuff like upload the data to cayenne server
look at this , for bigining Getting Started with ESP8266 using Cayenne's MQTT
you can connect the sensors directly to nodemcu and connect it to cayenne. have a look at this Adding a New Device using MQTT
I keep trying to do the same thing!! Connect mcu node to cayenne and after connect arduino uno to mcu so that i can tx sesnors data ( that wll be connect to arduino ) to cayenne. Can find one single tutorial on this
above is a details tutorial on how to connect nodemcu to cayenne.