Arduino mega at2560 overclock 20mhz
i hope someonr me. i've ask intalian forum without success ( me doesn't work ) i need use at2560 @ 20mhz becouse need drive matrix display ( 2 project 1 sure 3216 bicolor 3 panel , 1 rgb matrix panel adafruit) so why need more "power"! they suggest me change ( add) in board.txt file atmega configuration @ 20mhz (done) now 20mhz oscillator board doesn't work becouse bootloader don't accept new oscillator. so need bootloader works @ 20mhz. think should burn via icsp. so posted ( see in italian section) hex file bootloader 20mhz oscillator. the problem appear when ili try burn it. ( see picture error) the original bootloader 21kb while midified 25kb could post working bootloader atmega2560 run @ 20mhz ? thank much daniele quote so why need more "power"! are sure code optimised , cannot use arduino @ native speed ? Arduino Forum > Using Arduino ...