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 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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  whish for Adjust Z Axis with 2 independent Z-Motors
  • SIam

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  @dc42 said in whish for Adjust Z Axis with 2 independent Z-Motors: That will be possible when conditional GCode is fully implemented in RepRapFirmware 3. that would be great!! Why is it taking up to 8 iterations of G32 to get the bed level? Please share the output from running G32 several times. as soon as my printer has finished printing but that still takes a while
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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.
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  Easier Z Offset control
  • Krohm Koala

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  J'ai essayé, ça à l'air d'aller pas trop mal, même si j'ai essayé plusieurs fois (avec un print entre 2) et ma buse se crash dans le bed des fois, j'ai pas trop compris mais à voir, j'ai surement merdé quelque part x) D'un côté j'pense que je l'adapterais pour enregistrer un G31, j'préfère rester avec un G31 même si avec le G10 ça à l'air d'aller pas trop mal.
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  Polar Printer firmware for design similar to Crane WASP
  • P_Fabe

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  From the photo, it looks like a straightforward polar printer; in which case, it is already supported by RepRapFirmware running on Duet. See https://duet3d.dozuki.com/Wiki/Gcode?revisionid=HEAD#Section_Parameters_for_Polar_kinematics for the configuration parameters. You should be able to use it with GCode generated by a standard slicer, configured such that X=0 Y=0 is the position of the central axis. The only complication I can see is that if the slicer generates G1 travel moves from one side of the axis to the opposite side, those moves may not be possible without violating the minimum radius. A fix would be to use a slicer that generates G0 commands for travel moves, or to pre-process the GCode file to turn non-extruding G1 moves into G0 moves.
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  Reporting and editing firmware retraction parameters
  • alexjx

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  @phaedrux Interesting link. That's a very good direction. I could just list a few candidate values. Didn't think about that. Thanks.
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  Wouldn't it be easier if we had separate CNC and FDM firmware?
  • deckingman

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  @deckingman You're welcome!
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  Make use of variables
  • Googliola

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  Glad I found this topic! Sorry for dragging up an old topic but I don't see any other information on the wiki about this. I'm looking for variable support as well. An example of an immediate want (notice I didn't say need lol) is the ability to call a macro with hotend first layer temperature and bed temperature parameters. My Cartesian machines all will set initial hotend temp to 160° while bed heats up, then do a mesh bed leveling and finally heating up the nozzle to print temp just outside the print area and doing a purge line before it begins the print. Yes I know that I can put this in Slic3r custom gcode for print start, but then I have to manage it for each printer 😁 I'd love to take advantage of just putting the macro call in the custom gcode section.
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  Please support slicer generated progress marks
  • zapta

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  @dc42 said in Please support slicer generated progress marks: If you simulate the file before printing it, then DWC 2.0 offers another estimate, based on the simulation time. Have you considered to use statistical sampled simulation for a prior quick estimate? E.g. sample the file at a few places and extrapolate the overall secs/byte or second/layer ?
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  Heater timeout
  • jckray

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  @jckray said in Heater timeout: @dc42 Any thoughts on the possibility of implementing an optional heater time out? I will add this to the firmware wishlist. Perhaps it shoulkd be a global timeout that turns the whole printer off? On a semi-related note, is there a way of calling restoring the print temp when resuming a print? For example, if the temp was set to something else during a pause, then resuming would restore the printing temp. Essentially, is there any way to call the previous printing temp? You could set up a standby temperature for the tool (or for all tools), then you can use T-1 in pause.g to deselect the tool (although that would be inconvenient if you want to do anjy extrusion or filament loading while it is paused). Then do T R1 in resume.g to restore the active tool at the time of the pause.
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  M48 Measure Z Probe repeatability and print to serial output.
  • brunofporto

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  I've added a note to https://duet3d.dozuki.com/Wiki/G-Codes_not_implemented.
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  3 or 4 wire hotend fan
  • Iamturbo1978

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  @dc42 that is only what I was suggesting. Thank you for the work you do.
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  Delay one command...?
  • R3D3

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  @r3d3 said in Delay one command...?: No, that's not what I want. as mentioned several times; if you're clearer on what you do want maybe you'll find an alternative way to achieve it.
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  SOLVED gcode command to skip current process without canceling?
  • tom_lauerman

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  Many thanks @dc42. I will practice using the file resurrection and also look forward to seeing this feature emerge in the future.