I've tried this tutorial (on a completely fresh ATMega328P-PU) for using the Arduino as an ISP...
Is that the 10uF capacitor in step 5 in the arduino.cc tutorial?
Would that be the problem?
And do I just use '328p' in avr dude even though my atmega has 'pu' at the end?
Could it be that I need a crystal (16MHz)? I thought it was unnecessary with that configuration?
Quote from: Dblade4 on Feb 07, 2013, 03:15 pmCould it be that I need a crystal (16MHz)? I thought it was unnecessary with that configuration?It's nothing to do with configuration.If the chip has previously been set to use a crystal then you need a crystal to be able to unset it again.
I am getting the same "Yikes .. Invalid Device Signature" problem.
Could it be that I need a crystal (16MHz)?
I thought it was unnecessary with that configuration?
Post a photo of YOUR connections, not the ones you are trying to copy.That last photo also states that there is no power connection between breadboard and Arduino, but you should always have a common Ground, so connect the breadboard battery negative to Arduino Gnd (or even simpler just power the breadboarded ATMega from the Arduino during programming).Post a photo of what you have and then people can help troubleshoot. Often someone thinks they are following an example but usually the reason it doesn't work is because they have actually wired something wrong, even though they think they haven't. ;-)
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