Monday, September 08, 2008
PIC24 printing from SD card
The twin drive extrusion head that produced these parts is not quite the same as the standard Bitz from Bytes item.
Build of the bracket, left and below, is without any fill
It looks like the extruder mount you show is just edge and no infill ?
Also what are you using for output to the controller boards the parallel port?
post some more info I have been looking into this myself but with using the Arduino the PIC24 or 24F looks to be a lot easier and cleaner. I think working with out a computer would be a huge feature we need to get this to move into every body's home!!
Great Job!! And I would love to help out..
Making the PCBs and parts from SD card would be an extremely cool way of producing subsequent RepRaps. You just ship someone parts and one SD card and he can do the same... The contents of the card would have to be adjustable, so you can make various choices.
The router attachment has all been removed now to run the extruder head.
Twin motors were used to reduce the duty and improve reliabiltiy. I tried single and twin drive back to back and the twin motors seem to hold the speed more stable than one alone plus they will have twice the pull out torque to cope with tight spots.
Ian at Bitz from Bytes produced the special top plate for me so if you want to try one then drop him a line.
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