Question about the extruder fan #6
Comments
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Unfortunately they just hardwired the extruder fan to 24V. There isn't much free I/O routed from the microprocessor on the mainboard to use with a relay to switch it on and off. I am using the analog port for my BL_Touch and I really didn't want to solder directly to the micro so I used a small buck converter, dropped the voltage to 12V, and installed a 40x10 Noctua fan that is almost silent. |
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It is fine to use GH to ask questions. I am also on facebook as Robert Mendon. |
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I'm not on facebook (but I am on keybase.io), so I'll drop questions here. I've got the all-metal hot-end upgrade from MicroSwiss, and I was looking at attempting to print polycarbonate. Some PC needs to be printed at/near 300C, so I know I'll have to bump MAXTEMP. Any experience with that? |
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Yeah just change the HEATER_0_MAXTEMP to something like 310C. I print polycarbonate on mine all the time. I printed my cooling fans in it as I got tired of them drooping all the time. I have my max temp on the hotend set to 400C and the bed set to 150C but have yet to take it that high. I have taken the bed up to 140C so far. I did change the connector on the bed as the stock one was melting at 120C. If you go much above 300C you will not want to use a silicone sock. In the next week or so I may try to print some small PEEK parts on it at about 380C. |
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Last question for a bit, but I cannot get the Bed PID Autotune Any thoughts there? |
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Check your thermistor and see if it is still secure on the bottom of the bed. It may be an issue with mainline marlin. You may want to try manual adjustment (see manual section of PID Tuning). I am using a glass sheet with PEI for my build plate for my D6. As a matter of fact most of my printers have a large gIass bed or MIC6 aluminum and have a lot of thermal mass so I usually disable PID control for the bed. If I enable PID control it actually causes more temperature fluctuation as my beds need full power to sustain a constant temperature. |
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* # This is a combination of 18 commits. # This is the 1st commit message: Add Support for ADIMLab Granty # The commit message dot-bob#2 will be skipped: # Update Configuration.h # The commit message dot-bob#3 will be skipped: # Add files via upload # # Add Support for ADIMLab Granty # The commit message dot-bob#4 will be skipped: # Create Configuration.h # The commit message dot-bob#5 will be skipped: # Delete Configuration.h # The commit message dot-bob#6 will be skipped: # Create Test.h # The commit message dot-bob#7 will be skipped: # Add files via upload # The commit message dot-bob#8 will be skipped: # Delete Test.h # The commit message dot-bob#9 will be skipped: # Delete Configuration.h # The commit message dot-bob#10 will be skipped: # Delete Configuration_adv.h # The commit message dot-bob#11 will be skipped: # Add files via upload # # Add ADIMLab Pins # The commit message dot-bob#12 will be skipped: # Add files via upload # # Add Bootscreen # The commit message #13 will be skipped: # Update Configuration.h # # Add Bootscreen # The commit message #14 will be skipped: # Update pins.h # # Add ADIMLab Board # The commit message #15 will be skipped: # Update boards.h # # Add ADIMLab Granty # The commit message #16 will be skipped: # Update Makefile # # Add ADIMLab Granty # The commit message #17 will be skipped: # Update boards.h # The commit message #18 will be skipped: # Update Makefile * Add Support for ADIMLab Granty * Optimize bootscreen * Update Makefile Updated Description * Update boards.h Updated Description * Update pins_HJC2560C_REV2.h Updated Description * Update Configuration.h Added Author + Custom_Machine_Name * Create _Bootscreen.h Add Bootscreen * Add files via upload Add ADIMLab Granty v1 * Update boards.h Add ADIMLab Granty v1 * Update Makefile Add ADIMLab Granty v1 * Update pins_HJC2560C_REV2.h * Consolidate Granty configs * config updates
Description
Looking at Configuration_adv.h I see that the extruder fans are disabled, which makes the extruder fan stay on all the time. I also see in some of the Ultimaker code repos comments that suggest the fan pin for the extruders was removed, implying they switched to an always-on arrangement?
Ultimately, I'd love to get the fan off below 50C.
I've got a Monoprice Maker Ultimate, running off the MMU-2.0.x branch (c86943e). I'm loathe to take my machine apart to trace these, and I'm hoping there's a clear answer. A "no" just means I'll stop hunting for it. 😄
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