Firmware wishlist

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  Firmware wishlist and priorities for Duet WiFi and Duet Ethernet
  • dc42

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  @snufkin said in Firmware wishlist and priorities for Duet WiFi and Duet Ethernet: My vote is: True bed levelling using 2, 3 or possibly 4 independently-driven Z motors and a Z probe. This one exists now. https://duet3d.dozuki.com/Wiki/Bed_levelling_using_multiple_independent_Z_motors Automatic advance of changes in the colour mix when using a mixing hot end. See deckingman's blog. Support for PanelOne 20x4 text displays, or possibly 12864 mono graphics displays. The Duet Maestro supports 12864 displays. The other Duets lack the hardware needed. But there are other alternatives to the PanelDue now as well. Cheap tablets as a web interface or even a customized simplified interface. https://forum.duet3d.com/topic/9257/dueui-1-1-0-is-released Ability to update PanelDue firmware via the web interface. Still on the wishlist. Ability to control an electronics cooling fan thermostatically based on CPU temperature and driver overheat warning. This is now possible as well. https://duet3d.dozuki.com/Wiki/Mounting_and_cooling_the_board#Section_Cooling Thanks for all you do for the community!
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  New RepRapFirmware 3.0 early beta
  • dc42

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  @dc42 said in New RepRapFirmware 3.0 early beta: There are some reported bugs in the current v3-dev. In particular, you need a quarter second delay between creating a sensor using M308 and creating a heater that uses it. I also have a report that configuring thermistors using M308 doesn't work (at least on Duet 3), which I am about to investigate. No problem. Thanks! If there's anything I can do to help, let me know. Specific bugs needing to be squashed, testing, etc.
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  'randomise' option to combat VFAs in cartesian printers
  • robm

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  @robm If the lines are aligned vertically they are related to stepper position. I don't see how varying speed or acceleration would change the position of the lines, just perhaps their severity if they are due to resonance. On a delta the motor positions don't map linearly to object position, breaking alignment, but on a Cartesian machine there is no way to break the alignment.
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  SOLVED Treat G90/G91 and M82/M83 like G53
  • wilriker

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  @dc42 Great! Did not know that and honestly never tried.
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  Regulating heatbed by hotend thermistor
  • heinzdrei

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  @heinzdrei said in Regulating heatbed by hotend thermistor: bakery is not exactly your prime concern with Duet3D maybe not but its great to see more applications!
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  Sensorless homing with TMC22xx
  • Dreide

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  I've had this on my list to try for some time, but it's been low priority. I'm glad you found the time to try it. Any PR you submit will be considered on the usual criteria; in particular the usefulness of the new functionality provided, code quality, and avoidance of undesirable side-effects.
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  Analog threshold for M581 trigger
  • rjh

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  Really interessting!!
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  Dual homing switches for fast homing
  homing • • Alcez42

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  (Or alternatively keep the spacing so that acceleration limit will prevent you from reaching too high a velocity)
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  IMPORTANT: Option to abort when Probing fails!
  • GaRv3

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  Well, I will manually monitor it for the time I wait for the update.
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  First Layer finished Macro
  • n30dg

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  That joke landed like a Soyuz capsule.
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  SOLVED Question to Telnet Notifications with M118 P4
  • mloidl

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  Successfully tested 2.04RC1 yesterday and can confirm that the line ending is now sent correctly. It's now very easy to handle the messages from the telnet port. @dc42 Thank you very much.
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  Error handling on SD print
  • 4ndreas

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  The feature you ask for will be available in RepRapFirmware 3 when I finish implementing conditional GCode.
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  whish for Adjust Z Axis with 2 independent Z-Motors
  • SIam

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  @siam, if you find that each time you run G32 it under-corrects, you can use the M671 F parameter to force some over-correction, to help it to converge faster. For example, F1.5 will apply 150% of the computed correction.
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  New M-code to send a network request
  • lostapathy

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  @nightreaver I can give you my code when it's finished. But it will be C for ESP-IDF, not Arduino .ino.
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  Upgrade fan control
  • Anidal

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  @anidal True. It would be nice if you could lock the fan speed there as well, or lock it with a Gcode. I think the way the DWC does it, is that it just periodically resends the set fan speed. You can tell that during the print even with it locked it will briefly spin up and then go back to the locked speed.
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  SeeMeCNC Accelerometer probe board
  • curieos

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  Looks like the accel board straight up won't work with the Duet. The thermistor ground is common with all the fans, so if I connect it to the thermistor header it causes the bed and hotend thermistors to vary wildly.
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  "heater timing" or "heater phasing" feature request
  • JRDM

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  @lb said in "heater timing" or "heater phasing" feature request: @jrdm Ah - now I understand... -> guess what dekingman just posted as idea with a macro with subsequent timing seems to be doable and the most reasonable thing for now...(?) I'm thinking about programming a separate microcontroller board that would suppress the secondary heater when the primary is on. This wouldn't be a problem as the secondary is an enclosure heater that's on thermostat control. I did this with a standalone FET once then I moved the circuit and it didn't work anymore. Not sure if I ESD'd the FET or broke a connection somewhere. A fet or simple logic board would do the first iteration design, but second iteration program would count the time it's been suppressed and make up for it when the primary heater is off. That said my needs have since changed and I probably just need to switch my machine from 120V to 240V, which gives me some power head room.
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  More repeatable Homing.
  • Peter120

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  Thanks for the welcome and sharing your thoughts. My underlying interest is just how accurate can a PLA object be printed or better perhaps is what is limiting print accuracy. Is SLA required for better print accuracy or can FDM be improved. dc42 Point 1 is valid and it was not on my radar. I have a Cetus with a Z axis belt which I can coax it into showing micro stepping errors on selected printing tests. You picked a good printer geometry example. I thought about a springy leadscrew to motor shaft coupler supporting the build platform weight. Point 2 I did consider but figured that internally the stepper is periodic every 4 steps or in my case 0.8mm and that one could choose a winding and polarity that resulted in some step position margin; however, I was thinking of belts and not screws. Your point 1 using a leadscrew might be hit and miss for Z, but probably not for the X and Y belts. I found this link where they measured the stepper accuracy and it is obvious why thin Z layers have a problem with belts. https://www.applied-motion.com/news/2015/10/stepper-motor-accuracy Between two adjacent bad steps the difference error is 1/10 of a step which is 0.02mm for my belts. This is small until you think about the error as a percentage of a 0.05mm layer. Micro stepping errors would also subtlety vary the extruder nozzle flow rate. deckingman. The interference fringe is sensitive to several printer errors but the trick would be separating out the individual variables and adjusting the printer. I posted an extrusion calibration test that you might like. It is based loosely on a micrometer. You print a nut and bolt and the snug final angular position measures the axial thread clearance which is known for the STL model printed. Flip the nut over and remeasure the angle and you get the overhanging thread sag. https://www.thingiverse.com/thing:3390910
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  Returning "virtual extruder position" in M114
  • alexjx

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  Thanks, I'll add this to the work list for the next firmware version. Gina (the developer of Octoprint) now has a Duet, so she may implement an alternative solution in Octoprint.
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  Can show the mixing ratio on the Duet maestro 12864 display?
  • airking7

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  I have added it to the firmware wishlist - although when I finish implementing the object model in RepRapFirmware 3, I think it will be available automatically.