Step 1: Installing Arduino IDE Software Download and install the Arduino IDE software from Arduino's official website.

The slave responds with its address to the master. In summary, This project shows how the Arduino uno and the ESP8266 or nodeMCU communicate via I2C protocol. The nodeMCU as a master sends a "hello ...

The new Arduino IDE 1.6.2 features a one click install of boards and libraries and now includes two new menu items in the form of “Sketch > Include Library ...