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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/ | According [https://download.lulzbot.com/TAZ/4.0/documentation/current/manual/TAZ_4_Manual.pdf PDF Manual for the TAZ 4] <big>'''the Nozzle diameter is 0.35mm'''</big> (same as the TAZ3 which our extruder is from) | ||
<big>'''The | <big>'''This printer's extruder is setup to use 3mm diameter filament'''</big>, which is usually set as 2.85mm in the slicer. The manual says "it is highly recommended to take multiple measurements from along a length of the filament and use the average." but trial and error is probably more effective to find the right value. | ||
<big>'''Print volume is X: 298 by Y: 275 by Z: 250 '''</big>according to [https://download.lulzbot.com/TAZ/4.0/software/current/firmware/Marlin/Marlin_TAZ4_1.0.0.1/Marlin/Configuration.h Configuration.h] in the 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]] | ||
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 default values are found in | the default values are found in | ||
[https://download.lulzbot.com/TAZ/4.0/software/current/firmware/Marlin/Marlin_TAZ4_1.0.0.1/Marlin/Configuration_adv.h Configuration_adv.h]:<code>#define DIGIPOT_MOTOR_CURRENT {175,175,240,135,135} // Values 0-255 (RAMBO 135 = ~0.75A, 185 = ~1A) | |||
pins.h:#define DIGIPOT_CHANNELS {4,5,3,0,1} // X Y Z E0 E1 digipot channels to stepper driver mapping</code> | pins.h:#define DIGIPOT_CHANNELS {4,5,3,0,1} // X Y Z E0 E1 digipot channels to stepper driver mapping</code> | ||