Arduino Rev 2. Atmega328 - USB2Serial - Bootloader

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1

Hi all,

Like many I recently bought two atmega328 without bootloaders. All I have is an arduino ethernet shield, a usb2serial adapter, and an arduino rev2, is it possible to burn the bootloader with any of this items? Maybe through the usb2serial or ethernet shields icsp.

I would really appreciate some help. I have tried many solutions proposed by arduino, but none of them had worked. I still get this message:

avrdude: stk500_getsync(): not in sync: resp=0x00
avrdude: stk500_disable(): protocol error, expect=0x14, resp=0x51

If you could provide step to step instructions it would really get me started.

2

I also have the pickit2 programmer from microchip, but cant find anythin in the internet with clear instructions on how to use it with the atmega328.

thanks again for any help

3

You could do it with a solderless breadboard, wire the blank chips to the SPI pins: D10 to blank chip reset, D11 to D11, D12 to D12, D13 to D13, power, gnd, and run the Optiloader sketch on the Uno.

4

Thanks crossroads,

I havent checked carfeylly the optiboatloader but it seems it uses an arduino to program the atmel328,, does it mean i have to leave an atmega328 at the arduino board and a second one on a breadboard? is this why you stated d10 to d10, etc...

Would this work with the minimal connection showed here at the bottom of the page?:

thanks again

5

Yes and yes. See the video at the bottom of this link.
http://arduino.cc/forum/index.php/topic,68183.0.html

6

thanks Crossroads, it has worked like a charm with no crystal at all. I have now uploaded some sketches. I let it you know if it worked for sure.

7

Cool.