Marlin and Arduino Difficulties

Hello,

I need help due to difficulties sending a Marlin reconfiguration to the board,
The problem is because my Z axis is not moving properly, the relationship between logical end the effective is 10/9, egg. on Pronterface when I send the z axis to move 10 mm, it only moves 9 mm.

I'm using a gen6, the processor seems to be mega 644p, I installed Arduino 1.0.3 and Sanguino, however, I get the message:
n file included from Marlin.h:23,
from cardreader.cpp:1:
pins.h:770:3: error: #error Oops! Make sure you have 'Arduino Mega' selected from the 'Tools -> Boards' menu.

Does sanguino installed incorrectly?

Thanks in advance.

You should try with Arduino 0023 . Arduino 1.0 and above made lots of changes and not many firmwares are set up to use 1.0 and above.

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The problem persist with Arduino 0023, would you mind tell me the steps to configure Sanguino and Arduino on Mac OS?

Thanks

Edited 2 time(s). Last edit at 01/13/2013 07:59PM by niksoley.

I found that if I jog the z axis with Pronterface before I print, the z axis will move correctly. If I don't jog, the z axis moves a fraction (about 1/2) of what I want it to do. I'm not sure what's causing this, but this kludge works for me.