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[on:]

I'm trying to bootload the atmega328P-PU, exactly as shown in here, http://arduino.cc/en/Tutorial/ArduinoISP. I have a 328P-PU on my arduino dumilanalov, to which i burnt the arduino ISP sketch, then i tried burning the bootloader to the 328P-PU in breadboard.
I keep getting this error,

avrdude: Yikes!  Invalid device signature.
         Double check connections and try again, or use -F to override
         this check.

I rechecked the avrdude.conf file and the device signature was still " 0x1e 0x95 0x0F", which I'm guessing is the right one for 328P-PU. I also tried disabling auto reset by placing a 10uF cap across RESET and GND, but i keep getting the same error.

Any help will be deeply appreciated....

[Reply #1 on:]

I have a sketch here that will program a bootloader without using avrdude:

http://www.gammon.com.au/forum/?id=11635

[Reply #2 on:]

I don't know if this will help but I have had good luck with this: http://www.gammon.com.au/forum/?id=11635
This may be of some interest too: http://www.gammon.com.au/forum/bbshowpost.php?bbsubject_id=11637

[Reply #3 on:]

Did you disable auto-reset on that Ardu' that you are using as a programmer?  Not all boards require it, but a 10uf cap between ground and reset, or a 110R resistor between reset and +5V on the programmer may be needed to stop it resetting during the bootloader burning process.

I think the error you have is a general one and not directly related to an incorrect signature.  If AVRdude receives and actual incorrect signature, it will tell you what it was and what it was expecting.

Edit - sorry, I see you did disable reset.  If you also included a crystal and caps (you will need those unless you know your chip has fuses set for internal oscillator) then it's probably just a loose or miss-placed connection.  It's very easy to do.

[Reply #4 on:]

Any help will be deeply appreciated....

Show a photo of your setup. Tell us how the fuses are set in the target chip.

[Reply #5 on:]

Hi.
Same problem here (328P-PU without bootloader, Arduino UNO)...
I did exacly what you described here (http://www.gammon.com.au/forum/bbshowpost.php?bbsubject_id=11637), but it does not work. I tried both ways, none of them works.
Is there anything I might have forgotten???
Thanks so far.

[Reply #6 on:]

This is a common error if the 328P fuses are set to external clocking and you are not providing a crystal or resonator to XTAL1/XTAL2 pins.  Alternatively if you are using Nick Gammon's bootloader you can use the Arduino pin D9 to the 328P XTAL1 pin, to provide an 8MHz clock, just for programming.

[Reply #7 on:]

Hello.
Today it works. I can't explain it...
bekas