Duet Hardware and wiring

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  Ender 3 Pro and Duet 3 Mini 5+ Guide
  • Phaedrux  

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  Part 2 of the guide is now up and goes through using the config tool to generate your first set of config files. Next guide will go through getting connected for the first time, updating firmware, and initial testing and commissioning.
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  Duet maximum achievable step rates
  • dc42  

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  @LB I'm away from home at the moment but the low step pulse frequency is related to expansion boards and firmware version 3.1.1. The extruders are Bondtech BMGs with steps per mm of about 400 with 1.8 degree stepper motors. I can run these at only 16x microstepping and 30mm/sec retraction speed. Hopefully this situation will be improved with the 3.2 firmware but I'll wait for the beta testing phase to be completed before I attempt to install it.
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  Guide for posting requests for help
  • T3P3Tony  

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  Hall Sensor Help
  • koaldesigns  

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  @koaldesigns said in Hall Sensor Help: In fact when I even try to home it says endstop failed or not recognized, I don't remember its helpfull to post the actual error message. post your config.g and a picture of your wiring
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  DHT22 not working after update from 3.1.1 to 3.2.0
  • jhalewood  

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  I was just about to create a new topic on this - since I see the same issue. It stopped working on 3.2, but 3.1.1 was perfectly fine. I thought for a sec it was the DHT itself (I have another thread on my issues with it) and grabbed a brand new one - but that still didn't work.
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  Water-Cooling | Using PWM Tac on Flow Sensor to Trigger E-Stop
  • Jordan_Miller41  

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  @Jordan_Miller41 you may want a day of a few seconds at the start of daemon.g Something like G4 S2 Otherwise there's a possibility that if you do a restart when the nozzle is hot, it may initiate a shutdown before the fan/impeller is up to speed.
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  SOLVED 1LC and BLTouch
  • BlueDust  

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  get small enough ferrules and it'll be fine. (optionally fold the wire to make up the lacking cross section, then trim the ferrule to length and remove the plastic insulation)
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  Duet wifi 2 not connecting WIFI and USB
  • Black Canary  

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  @Phaedrux Sorry for the late reply, I just did, and all the same. I'm not an expert but I found it wierd too, I just ordered a new Duet wifi 2 hope this time I dont screw up, but I would still like to know what's going on as I could use it in other machine (That's the idea anyway). I don't know if this gives any bell, but I believe it's important to notice that before it stoped working my E1 was always on as soon as I applied the 24V on VIN. Even if that says nothing to you, thank you very much for the help!
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  Manual Grid Mesh Levelling
  • Adamfilip  

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  @Adamfilip said in Manual Grid Mesh Levelling: @fcwilt havent really but definately something to consider but so gar the G29 manual is working for me. Thank you for your help with this. Glad to help. Frederick
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  Connect MKS PWC V3.0 (and V2.0) to Duet 2 WIFI
  mks pwc v2.0 mks pwc v3.0 turn onoff psu • • Albundy  

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  Can anyone confirm that this is needed/works also for the Duet 3 with the MKS PWC?
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  UNSOLVED Tool board Failure during Print
  • Turricann  

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  @dc42 Thanks I have contacted ooznest who was the supplier.
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  Air pump too fast at minimum pwm
  • Nxt-1  

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  In that case, I suspect an interference suppression capacitor is causing the slow rise times, or possibly just the capacitance of the motor windings. When the mosfet turns off, the motor inductance, resistance and capacitance from a LCR resonant circuit that start to ring; but the diode clamps the oscillation it when it reaches 24V. The basic issue you are having is that lightly-loaded DC motors respond more to the peak voltage they are supplied with than to the average voltage. If you never want to drive the pump as maximum RPM then the simplest fix may be a power resistor in series with the pump; or you could power the pump positive terminal from 12V from a buck regulator instead of 24V. If you do need the full range then I suggest an LC filter between the Duet and the pump, with the flyback diode connected to the input (Duet end) of the filter. However, you will need to use quite a large inductor. Even at 65kHz PWM frequency you will need at least 1mH with a suitably-high rated current.
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  figuring out Rostock Max v3 fan settings in RRF3
  • czyzczyz  

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  Also, 3.2 final is out, no need for the RC2. https://github.com/Duet3D/RepRapFirmware/releases/tag/3.2
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  Duet 3 no power coming to bed.
  • eddygara  

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  @eddygara In general - it is all about wire size and required power. If Your bed require high power separate wire is better option than connectin everything with just one. If You know, that the wire connected to power in can handle all the current, then just make the jumpers between board terminals. But if You have average power bed ~200W it would take about 16.6A to run it, and wires on photo look like they can be a source of problems I would not go below 2.5mm^2 for such heatbed.
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  Shorted fan connector on Duet 3, VIN fuse & MOSFET blown
  • TechNi  

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  @TechNi said in Shorted fan connector on Duet 3, VIN fuse & MOSFET blown: @Phaedrux is talking about a 1A fuse Sorry, my brain skipped the 5. Must have been thinking of the 1A fan fuse on the duet2.
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  G29 fails on Duet3 with toolboard
  • jdumoulin  

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  @JayJay Just for the sake of clarity. M280 commands are servo control commands. The BLTouch uses a servo to deploy and retract the pin. For the BLTouch you put the M280 commands in deployprobe.g and retractprobe.g M401 and M402 call the deploy and retract macros. That's all they do. When using a BLTouch (probe type P9) G30 will call M401 and M402 automatically. In the days before the P9 probe type specifically for the BLTouch, you had to manually deploy and retract the probe before sending G30. Using the base M280 servo commands was common, however M401 and M402 were added so that the firmware could actually keep track of the state of the probe as being deployed or not. So yes, using M401 and M402 in your homing files when using a BLTouch isn't needed anymore because probe type P9 takes care of deployment and retract automatically. But behind the scenes it's still just using M401 and M402, which is just calling deployprobe.g and retractprobe.g which just contains the M280 servo commands. I hope that gives some historical context and explanation on why things are the way they are.
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  Duex Heater LED lit....unused
  • TampaPrinter  

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  @dc42 I thought it might be something like that! Thanks much for the clarification. It's all working very well!
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  Duet 2 WiFi on Ender 3 keep LCD
  • alexic  

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  Sorry for crossposting, actual info for Duet2 + Ender 3 LCD here: https://forum.duet3d.com/post/207704
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  UNSOLVED How dead is my Duet 2 Maestro?
  • patrickwjoyce  

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  The fact that the USB device has shown up at all is a good sign. Have you tried uninstalling the device driver for it, and reinstalling the driver?
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  Troubleshooting bed heater
  • Dee_Pee  

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  @Dee_Pee Well glad to hear you've got it sorted. Frederick
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  New to the duet COMPLETE NEWBIE
  • gabrealek  

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  @Phaedrux YESSS !! it worked perfectly!!
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  Brake connection for stepper motor
  • Dep  

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  Yes, if you do a forum search you will find some examples of brakes being used on the z axis.
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  UNSOLVED Please help I'm having trouble setting up my Duet2 3D printer.
  • kotuo  

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  That's great to hear.
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  UNSOLVED homing not working at low speed
  • Pseud3mys  

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  @dc42 okay thanks
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  This topic is deleted!
  • Dee_Pee  

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