[chbot] Arduino(Burning Bootloader onto ATMEGA8)

[Richard Jones]

Hi Jimmy,

Its been a busy weekend. Hopefully you have your Mega8 programmed by now.
But if not some more thoughts.
I'm not familiar with the Arduino specifics but hopefully my ramblings may
cast some light on your problem. Some things to check: 
Make sure the fuses are set appropriately for your oscillator
configuration.
Make sure the fuses are set appropriately for the size of bootloader you
wish to program.
Check that the oscillator is running at the correct frequency.
If the crystal oscillator is slightly off frequency than the crystal may be
running in the wrong mode, usually due to incorrect capacitor values. This
gives unreliable startup problems.
Make sure you have a good stable 5V supply to the Mega 8 during
programming.
Ensure no resets other than those desired are fed to the chip.
Make sure you have no I/O of your own connected to the programming pins
during programming.

If all else fails give me a call on 03 337 5337 one evening and you can
call round and we'll fix it together. I have several ATMega8's running so
we can do some substitution tests if reason fails.

Richard

On Sat, 8 Aug 2009 12:07:45 +1200, jimmy allen <jimmy1248 at gmail.com> wrote:
> I am trying to build an Arduino and are using this manual
> http://arduino.cc/en/uploads/Main/ArduinoSeverinoManual2.pdf.
> 
> I have got to the point where I am burning the bootloader onto the
> ATMEGA8 using a parallel programmer, but I keep getting verification
> errors.
> 
> So is there so one who has done this and has know how to do this.
> 
> Help would be very much apriciated
> Jimmy
> 
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