I am using an arduino mega clone called the Funduino.
I am developing a python based, tkinter application that will receive the serial data that arduino sends.
However, i am witnessing some behavior that i cannot explain and i am trying to debug. I won't say anything more, because this is an arduino forum, not a python forum.
But, in the arduino, there are some leds. One of them is power, which is constantly ON, when the arduino is powered.
There is another led that is named 'L'. When i open a serial connection this is lighted up and it stays ON.
However sometimes, when i send a string to the arduino, in order to trigger some data exchange, this button is switched off.
So what does this 'L' led is, and what it means when it is turned off?