Hello, until now I only worked with PIC, recently I switched to arduino, the first barrier was the new vocabulary, shield, sketch, etc.
But one thing I don't understand is the bootloader thingy. I have a arduino mega ADK, from what I understand there is a bootloader inside the main µC allowing me to program it without a programmer.
Do I need to do something special in order to not erase this bootloader and render my board unprogrammable? (I only code in C) Is there something in the arduino IDE that can erase the bootloader?
The bootloader is making the led on pin 13 blink, does that mean that I'm not allowed to use pin 13? Thanks.