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I'm trying to use Arduino Uno as ISP to program Arduino Mega 2560 using this Pin connections (Uno->Mega):

slave reset: 10: -> RESET on target

MOSI: 11: -> 51

MISO: 12: -> 50

SCK: 13: -> 52

It runs perfectly when I "Burn Bootloader" from Arduino IDE and LED starts blinking on target. So I assume my pin connections are correct.

However, when I open the Blink example and perform "Upload Using Programmer" in Sketch tab after choosing "Arduino as ISP" in Tools>Programmer it uploads the code but LED on Mega doesn't blink.

I'm afraid that I have problem in my Mega Bootloader hex file and think it's not configuring Pin 13 as a LED pin. But in this case I shouldn't have seen the led blinking after burning the bootloader.

What am I missing here? I appreciate your help. -Bex

share|improve this question
    
The problem may be related to reset. See arduino.stackexchange.com/a/19131/3879 – Milliways Jan 4 at 11:13
    
No, I checked the connections and they look fine. I set the RESET pin as D13 in Arduino Uno and don't think it's wrong. Also defined the RESET pin as D13 in the ArduinoISP Example. – bex Jan 4 at 18:03
    
When you "upload using programmer" the target board's bootloader is not involved, and I believe it actually gets removed by doing that. – Chris Stratton Apr 14 at 14:07

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