I bought a CNC machine kit (ULTIMATE Bee) that uses an arduino nano. I have come to the conclusion that the nano that came with it is no good. I bought a Nano V3.0 ATmega328P CH340G Controller Board USB 5V 16M Welded For Arduino but can not get it load GRBL firmware. is this the right nano to use? I am 72 years old and know nothing about computers so any help would greatly appreciated. Thanks
Did you try "Old Bootloader" for uploading?
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