Difference between revisions of "TAZ 4"

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Sudoroom has a TAZ 4 3d printer, that was donated in 2022.  It should not be confused with the older [[TAZ|TAZ 3]] 3d printer, which didn't work very well as a 3D printer.
Sudoroom has a TAZ 4 3d printer, that was donated in 2022.  It should not be confused with the older [[TAZ|TAZ 3]] 3d printer, which didn't work very well as a 3D printer.


[https://download.lulzbot.com/TAZ/4.0/ Documentation for the TAZ 4 from Lulzbot corporation]
According [https://download.lulzbot.com/TAZ/4.0/documentation/current/manual/TAZ_4_Manual.pdf PDF Manual for the TAZ 4] the Nozzle diameter is 0.35mm (same as the TAZ3 which our extruder is from) and the bed size is X: 298 by Y: 280


<big>'''The following start code should be entered until we can recompile the [https://download.lulzbot.com/TAZ/4.0/software/current/firmware/Marlin/ firmware]
[https://download.lulzbot.com/TAZ/4.0/ All files for the TAZ 4 from Lulzbot corporation]
 
<big>'''The following "start code" (set up in the slicer's printer profile) should be used with this printer in order to properly set extruder motor current:
<code>M907 E150</code>'''</big>
<code>M907 E150</code>'''</big>
If we recompile the [https://download.lulzbot.com/TAZ/4.0/software/current/firmware/Marlin/ firmware] we can put the correct default values for extruder motor current but that would be hard to do.


[[File:720px-Rambo-conn-all.jpg|thumb]]
[[File:720px-Rambo-conn-all.jpg|thumb]]
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The TAZ 4 didn't work because both Fuse F2 and F3 on the RAMBO main board were missing.  They're supposed to be [https://www.littelfuse.com/products/fuse-blocks-fuseholders-and-fuse-accessories/fuse-blocks/154.aspx Littelfuse OMNI-BLOK 154 series] and we didn't have any, so I stuck 5-amp [https://www.digikey.com/en/products/detail/littelfuse-inc/0466005-NR/521341 F1460CT-ND] in there since we have dozens of them in the FUSES bin: [[Image:Taz4_fuse_kludge.jpg|thumb|left]]
The TAZ 4 didn't work because both Fuse F2 and F3 on the RAMBO main board were missing.  They're supposed to be [https://www.littelfuse.com/products/fuse-blocks-fuseholders-and-fuse-accessories/fuse-blocks/154.aspx Littelfuse OMNI-BLOK 154 series] and we didn't have any, so I stuck 5-amp [https://www.digikey.com/en/products/detail/littelfuse-inc/0466005-NR/521341 F1460CT-ND] in there since we have dozens of them in the FUSES bin: [[Image:Taz4_fuse_kludge.jpg|thumb|left]]


<s>And now it turns on and mostly works, but the extruder stepper is mostly skipping.  Most likely the current needs to be adjusted for the extruder stepper driver, which is something we have to read the manuals to figure out how to do</s> - there are no tiny potentiometers to adjust on this RAMBO board, only a "digipot".
After installing the TAZ3 extruder, its motor was mostly skipping.  The current needed to be adjusted.  There are no tiny potentiometers to adjust on this RAMBO board, only a "digipot", which is controlled with the [https://marlinfw.org/docs/gcode/M907.html M907 command]
 
The digipots are controlled with the [https://marlinfw.org/docs/gcode/M907.html M907 command]


the default values are found in  
the default values are found in  

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