Duet Hardware and wiring

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  Guide for posting requests for help
  • T3P3Tony  

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  Z motor blew
  • Thinepa  

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  @bot Bingo!!! That's why they include nylon washers to use when installing the board. Shorted that bugger right out with those.
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  One z motor don’t always move
  driver issue warranty claim support • • Alucardi  

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  @ChrisP said in One z motor don’t always move: @Alucardi I was under the impression that any move on any axis would reset the counter ... So as long as your printer is moving at least on motor in that time, I think you should be fine. Yes, that's correct. It will only idle the motors when ALL motors have stopped moving for over 30 seconds, if M84 S30 is set. Ian
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  Another Predator
  • Carlo  

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  @Carlo Also, no need to return the old board at present. What might be useful is if you can take a good, focussed, hi res image of both sides of the board, and post them here, so we can see if there are any physical problems with it, eg poor soldering, which might be easily fixed. There have been two versions of the Smart Effector, v1.3 and v2.0, which do you have? If possible, it may be worth updating the firmware on it, though I don't think you can query the board to find out the firmware version. The latest was released in November 2019. See https://github.com/dc42/Duet3dSmartEffector/releases If you bought the board before then, it may have the issue where it forgets a custom set sensitivity, though I don't think you were using this feature, using M672 (see https://duet3d.dozuki.com/Wiki/Smart_effector_and_carriage_adapters_for_delta_printer#Section_Programming_the_sensitivity). To update the firmware on the Smart Effector you'll need to connect a programmer (eg AVRISP Mk 2) to the 6-pin connector next to the LED, and use Atmel Studio or avrdude to send the firmware hex file to the board. You may be able to use another Arduino to program it: https://www.arduino.cc/en/tutorial/arduinoISP Ian
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  Endstop wiring order
  • duettomio  

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  For Normally Closed, which is what you want, connect the OUTER two wires from the switch. The center wire will not be connected. On a Duet 2, connect them to the Zstop (or Xstop or whatever) and GND on the 3 pin connector. 3.3V on the Duet board will not be connected.
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  Upgrade to 3.0 now bed heater doesn't work
  • obscurity  

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  https://duet3d.dozuki.com/Wiki/Tuning_the_heater_temperature_control https://duet3d.dozuki.com/Guide/Ender+3+Pro+and+Duet+Maestro+Guide+Part+4:+Calibration/40#s183
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  Problems with drivers and PWM
  • pkirill  

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  Some early hermera shipments had cracked gears and will jam. Disassemble and check.
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  Quick LED PSU question
  • aniron  

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  There is no absolutely right or wrong answer to "connect circuit ground to earth ground" on Printers and CNC and other motion controlled machines. I do help a lot of people get the glitches out of their CNC, and I can tell you the policy I've developed over the years: "Star ground" everything that needs a circuit ground. This is a long topic of its own... the shortest version is: Run a ground wire back to ONE central location for each ground; no chaining". DO NOT connect circuit ground to Mains (earth, wall) ground. UNLESS the machine still glitches. Then, DO connect them. How is that for "eat your cake and have it too"??
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  Did I break the fans?
  • drmaestro  

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  @drmaestro said in Did I break the fans?: @bearer What should the voltage be when m106 S1 command is given? I'd test without power and according to the google search link, far too much to repeat in a post here. if not, you should have close to 3.3v on the gate when the fan is on, and Vin on the source pin of the mosfet.
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  UNSOLVED Fan tacho readout
  • Matej101  

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  Thanks, I got the readout now! Now to just solve the little problem of it always being zero
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  SPI Buffer
  spi buffer 74hc125 • • asanchez  

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  Master In Slave Out; its the only signal that is driven from the slave and it is sufficient to drop the voltage over a resistor; the alternative requires a bi-directional buffer level translator.
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  12v vs 24v hotend speed to heat
  • tekstyle  

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  @bearer said in 12v vs 24v hotend speed to heat: @tekstyle said in 12v vs 24v hotend speed to heat: it saids that heater 4 has an open circuit as far as i know the duet and the duex doesn't have any feedback for the actual heater; could the error be relating to the thermistor configured for this heater? The thermistor works fine. I can see temp measurements on dwc. I had a spare external mosfet from a previous build and hooked it up to the heater 4 pin, on 12v power. Did a test print with no issues other than some tweaking for the print itself but the machine seems to be fine. I would just rather get the heater working without the mosfet.
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  Duet maestro not connecting to DWC or being recognised by PC
  • NEVER LUCKY  

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  @NEVER-LUCKY Username checks out. Sorry for your mishap.
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  Duet 2 WiFi fried?
  • SilviuZ  

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  @SilviuZ Sorry your Duet has failed. Were you were wiring the fan up with VIN power on? We advise not to do such wiring with power on for just this reason. Unfortunately it sounds like you shorted 12 or 24V to 3.3V, and it’s caused a failure of the processor. There’s very little that can be done, unless you have access to hot air SMT reflow tools, as you’d need to replace the processor for a start, and possibly a number of other components. It will quickly become uneconomical to repair if you cannot do it yourself. The warranty for official Duet boards (as opposed to clones) is for 6 months, and does not cover failures of the board due to user error; see https://www.duet3d.com/warranty However, if you contact sales@duet3d.com, we have a small stock of refurbished Duets that may reduce the cost of replacement. Ian
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  SOLVED Fan0 blows faster than Fan2 at 100%?...Same fan!
  • Damien  

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  @Damien lol nice
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  Extrusion motor error: "short to ground reported by driver(s) 3"
  • JacKAsterisK  

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  @Phaedrux You're the best! I tightened up the filament tension and lowered the acceleration a bit. I printed another and only minor ghosting now! Seriously, your help on both of my threads has saved me immense headaches.
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  Duet reads 25.4 Vin while multimeter reads 24.7
  • nikscha  

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  @nikscha Your multimeter is likely to be correct. Accuracy of the VIN reading is +/-3%, which your reading just about is. Unfortunately, there's no way to calibrate the VIN reading. Ian
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  Mixed voltage for 24V fans on toolboard.
  • jmjcoke  

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  A couple of people have done this, and it seems to work. I have not personally done it. The one with the black/purple square is the one that switches ground.
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  Can't connect to Duet 2 Wifi via USB
  • mficken  

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  @dc42 Here is another picture that may be higher quality but it is still difficult to see the mark on U3
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  UNSOLVED Motor phase may be disconnected
  • Krohm Koala  

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  @dc42 not under warranty and got it from a friend, so i don't cause much of a problem for the use i'm going to do, but if i cant try something, i wanted to know if there's something, thanks for your time !