i have build a app with MIT app inventor. The app controlls a nodemcu ESP8266. In this app i can controll some relays. Now i would like to send data (temperature) from the nodemcu to the app. But i don't know what i have to do now. I searched a lot of theatrs in the internet since four days.
How do I have to write the program in Arduino? How do I have to build the right app in app inventor? Does anyone have suggestions?
Okey thank you for your information. I'm sorry i connot understand u. I have now visit a lot off websites to get some informations. But i don't found the right one. Can u explain me this part again. Can you make a example?