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I have a duemilanove which originally had a 168. I have some ATMEGA328 P chips and I've put one into the duemilanove. I am using a Uno as a programmer for the duemilanove. I am running Arduino 1.8.2 on a PC which I understand doesn't need a capacitor installed on the Uno. I've uploaded the sketch which makes the Uno an ISP, I have edited the avrdude.conf file, have wired up in accordance with http://www.crash-bang.com/resource/bootload-atmega328/ and the tutorial on this site. When I run burn bootloader using the preferences set to verbose, the returned signature is correct for the P version of the chip I believe (0x95 0x14) and this is the value I have put into the avrdude.conf file. However, avrdude is still insisting it is expecting to receive 0x95 0x0F and will not burn the bootloader. I have no idea where it is getting this value from (I've even tried editing the iom328p.h file...). Any ideas?

  • Why do you want to use a duemilanove? Why not use UNO which has better spec and is actually still supported? – MichaelT Mar 3 at 18:33
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    What board did you select, to "burn bootloader"? From what I know, putting an ATMega328 in a duemilanove board, will make it (more or less) identical to an UNO. So select the UNO from the boards, and press "burn bootloader", should work. – Gerben Mar 3 at 19:30
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    I've had the same issue with some standalone 328P project. If you enable "Show verbose output during: upload" in the preferences menu, you can see the command which the Arduino IDE uses to flash your device - avrdude. Copy it from the terminal window into a command prompt, and add "-F" to that to disable the device signature check. – towe Mar 3 at 20:11
  • @TobiasWeiß disabling the device check is not a good practice when you want to write to the chip and besides is not elegant. There must be a simple misconfiguration which has to be found and fixed – Sim Son Mar 7 at 16:41
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The signature bytes are:

ATmega328 0x1E 0x95 0x14

ATmega328P 0x1E 0x95 0x0F

So it looks you have the wrong bytes for the 328P.

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