I finally managed to upload Johann's modified Marlin firmware from my iMac onto the Sanguinololu (Atmega 1284P). Apparently the Johann-Marlin/Sanguinololu/iMac combo is not that wide spread yet. So it took me a while to find all the required info, but with some great help from Roland - who emailed me some very useful tips tips - I finally managed.
All the electrical/electronic parts are now connected and laid out on my desk, and I can 'virtually' print stuff using Johann's firmware.
One strange observation though: after 'homing' (I have to click the end stops manually as there is no real printer yet), and starting to 'print', the X-motor keeps spinning and there is no way, except resetting the printer in Pronterface, to stop it. Strange things indeed... but just another hurdle to take.
AMAZING!!!3D printing rostock style is nice!!Keep it good work..
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