How to unlock the atmega2560?

Using Arduino Avrdude, stk500, Bootloader issues
1

Hey guys.
I’m learning to use Fuses but block my 2560 atmega, can anyone help me how to unlock it?

The program does not recognize the micro, nor does it program forcing it, all connections are fine.

I use the Avrdudess IDE with the USBasp programmer, the error that presents me with this:

avrdude.exe: error: program enable: target doesn't answer. 1
avrdude.exe: initialization failed, rc=-1
avrdude.exe: AVR device initialized and ready to accept instructions
avrdude.exe: Device signature = 0x656570
avrdude.exe: Expected signature for ATmega2560 is 1E 98 01
avrdude.exe done. Thank you.

I hope you can help me, thank you.

2

Far outside my area of expertise but I think that it would help if you told us what the last fuse settings were that you applied.

Your topic has been moved to a more suitable location on the forum. Introductory Tutorials is for tutorials that e.g. you write, not for questions. Feel free to write a tutorial once you have solved your problem :wink:

3

What program? Is this program running on PC/laptop or on your Mega? What micro? An Arduino Micro? How is that connected to the Mega?

Typically, on this forum, that phrase indicates there is a 50% chance there is a problem with your wiring.

1 Like
4

I’m using the avrdudes program, it runs on the pc, it communicates with the microcontroller by the ISP connection, Micro is the microcontroller avreciado, I use the arduino mega which has the Atmega2560 and the connections this well because I test on another nameplate

5

Use fuses to work with the external oscillator of 16 MHz and wanted to have a serial communication since it could not have serial communication when programming by ISP

6

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