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Click on the right arrow button (upload button) as shown in the figure to upload the program to the module. This will start the blinking LED on the onboard LED of the NODEMCU module connected to pin ...

A lot of people have used ESP8266 to add inexpensive WiFi connectivity to their projects, but [Oscar] decided to take it one step further and program an Arduino over WiFi with the ESP8266. [Oscar] … ...