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Topic: programming without bootloader (Read 1 time) previous topic - next topic

Binu Madola

I already posted this question..  but not working ..using mkII I dont find any option in tools or file
I attching the prt scr
Iam using ubuntu OS

Binu Madola

I didnot find any option in mkII . I already attached that prt scr above ..
and Iam using Ubuntu OS(selecting IDE in root)

Nick Gammon

What prt scr?

I'm not downloading Word documents. Take a screenshot and upload a PNG file.

Nick Gammon

     To upload  bootloader , Iam using "AVRISP mkII IN-System Programmer". I didnot find any option to upload sketch,  in arduino IDE with ICSP.


I wish to programing  arduino without bootloader..

I thought you didn't want a bootloader? You need to upload the .hex file.

Nick Gammon

Please do not cross-post. This wastes time and resources as people attempt to answer your question on multiple threads.

Threads merged.

- Moderator


Sorry I thought my last post stalled a little.

My code seems to only work if it is uploaded onto optiboot. Not directly. What should the fuses be for an ATMega2560V running at 8Mhz on 3.3V?

Nick Gammon

I suggest you look here:


The BOOTRST fuse is the one that controls where programs start executing (bootloader or address 0).


I am unsure of the current settings used and the ones that I would need. I am very new to this so any help would be appreciated. Thanks


I am very new to this so

jumping in the deep end is not advised.

Nick Gammon

I have a sketch here:


That uploads from one Arduino to another without using the bootloader. It sets the fuse appropriately. You need an SD card (and board) however.

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