B4R Question Change Oscillator

takhmin77

Member
hi
i used arduino mega 2560 and after finishing programming with arduino board , i Create PCB board and atmega 2560 microcontroller and import hex file with jtag to it.
but i want to use 14.7456 crystall instead of 16 Mhz ( Default Oscillator of Arduino Mega2560 )
where i can set Oscillator Befor Compiling With B4r ?
 
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