Hello! I have bought a smd adapter that accepts 100 pin AtMega2560 chip. I am going to make my own "arduino board", so I need some help. 1.) I think the mcu can be bought with bootloader programmed, is that so? 2.) If not, I think it's possible to program the mcu using my Mega 2560 board. There is an example using arduino uno as programmer on this site, and so Mega 2560 can do the job also? 3.) If I use Mini USB Adapter http://arduino.cc/en/Main/MiniUSB with my design, then I can use USB connection to my PC. If I don't use the USB adapter, then I think I can use normal RS232-connection to mcu, true?
I want to do all this because I haven't found an Arduino board with more that 2 Tn Counter/Timer clock inputs available. I need more than 2 in my application. thx