hello, i am new here, i am trying to learn arduino, i want to see free space in the my arduino board can anybody help me?
Do you mean:
SRAM?
EEPROM?
Flash?
As far as SRAM, there is a library somewhere.
As for flash, it says when you compile your program.
And EEPROM...just know how many addresses you have used out of the max.
how can i to erase everything?
You can write a sketch to erase EEPROM
Then upload this sketch:
void setup()
{
}
void loop()
{
}
That gets rid of most things (~530 left for bootloader and main() )
When you compile and load a program, the information that you are asking for is displayed at the bottom of the IDE window.