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Hardware Upgrades between 1.0, 1.0A, and AiO?
#1
Are there any improvements in the basic hardware (belts, bearings, etc.) that were done to the davinci printers over the coarse of the model changes?  I intend to convert an old Davinci printer to a dual head bowden setup.  I want to make sure the printer has "good bones" before I start.  I've worked with an AiO and felt the hardware was pretty solid.  But a used 1.0 is pretty cheap on Ebay.  Since I am going to be flashing and modding it anyway, I figured I might as well pay less, as long as the mechanics are sound.

Also, I know the MB was changed.  Are there any major practical differences between the old and new?  Can the older boards accept another stepper driver for driving a second extruder?  I know the new ones can.

Thanks.
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#2
My older daVinci 1.0A has all the pcb traces for a second extruder, but more is absent than just the driver. You would need a couple of small surface mount transistors and resistors. I intend to reverse engineer the existing extruder and detail what needs to happen to add a second one but so far it has not made it to the top of my to do list. If you know a little bit about electronics, I don't think it will be hard to figure out.
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#3
Thanks for the info.  I will take a look at it when my unit arrives and see how difficult the soldering looks.  Not sure I want to mess with soldering transistors.
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