I am a student and I am doing work on Arduino nodmcu esp8266 and drone-related projects for the last 1 year.
I have found that the ESP chip is very cheap compared to the Arduino chip, So that is obvious that esp board like esp8266 nodmcu ESP-01 est is also cheaper.
why we can not ESP8266 in all projects?
I mean what is a big difference between both. both are compatible with the Arduino IDE.
Even we get more features like wifi.