Is sketch can be look as a firmware ?

Hi all,

I wanna know , is sketch as a firmware for Arduino?
Did we upload the " firmware " which wrote by ourself to the Arduino ?

Please tell me what's the different between sketch and firmware,
I'm really appreciate, thank you.

Sketch is the readable version; when compiled into a .hex file & uploaded, you could say it becomes firmware.

Got it, thank you so much :slight_smile: :slight_smile: