I have a problem with Arduino ATMega2560 board that was bought at emartee.com. The problem is that this board arrived without bootloader. So I decided to buy another one Arduino: Arduino Nano ATMega328P v.3 to use it in other projects as arduino and to flash bootloader into my Arduino ATMega2560.
I’ve connected Arduino Nano with Arduino using following instructions:
ICSP pinout here:
So I’ve connected these boards this way:
Arduino Nano - Arduino ATMega2560
D11 - ICSP pin#4 (MOSI)
D12 - ICSP pin#1 (MISO)
D13 - ICSP pin#3 (SCK)
5V - ICSP pin#2 (+5V)
D10 - ICSP pin#5 (RST)
GND - ICSP pin#6 (GND)
And after I plug Arduino Nano into USB - windows shows message like “USB device unknown”. But if I try to disconnect +5V wire between boards - it’s ok, no errors during initialization, but there is and error afre I try to flash bootloader via Arduino software v.18.
So, can you help me with this situation? What I’m doing wrong? Any advice will be very appreciated!