Stepper Motor Advice



  • Hey all,
    I was wondering if anyone had some good recommendations for stepper motors for the Duet 2 Wifi. Here is the kit that I have: https://store.makerstoolworks.com/products/mtw-create-3d-printer-motion-platform-kit
    In doing some research it looks like the steppers recommended for this are Kysan 1124090. However the listed voltage and mH are both above 4 which is not recommended in the choosing stepper motors guide. When looking through the forums, it seems like this model from stepper online is often recommended: 17HS19-2004S1. The only concern that I have with these is it looks like the wires are integrated into the motor as opposed to having a plug. This is my first kit where I'm sourcing parts, so any advice is helpful.

    On a positive note, the duet was ridiculously easy to get hooked up to the internet - guide made everything clear. I did get an error about heating (I think) when first connecting that might be helpful to include in the guide - I restarted the process because I thought I had messed up, but apparently other people have seen this as well and it doesn't affect the process.



  • I can recommend those SteppersOnline motors. They work quite well with the Duet. The wire leads are integrated, but the lead is a meter long, so you may or may not end up having to extend them anyway.

    What heating error was that? And which part of the guide do you mean? I could add the information to the guide if you give me the details.



  • Hi @Cocopufft,

    If you're looking for steppers with a detachable connector (JST-style), I have an option for you to consider.

    I got 6 x Nema-17 Steppers (48cm long) from a specialized company in Singapore called WantaiMotor.

    Their customer service was excellent & the construction of the steppers themselves looks very solid to me. I had them custom made for my needs (2 flat sides on a 25mm long shaft), so they took about a month to be made, but you can have them with a regular round shaft if you like so they may have a shorter lead time. I also had them made with a JST connector instead of the permanent wires.

    Other specs can also be requested, you just need to discuss them with their customer service directly (I wanted very low inductance and resistance with relatively high max current).

    The price was very reasonable too: about £6-7 per stepper as best I can remember (excluding shipping).

    Here are the specs to compare with other alternatives:

    Max Current: 2.4A

    Angle: 0.9 (400 steps/revolution)

    Inductance: 1.8mH/Phase

    Resistance: 0.9R

    Holding Torque: 42Ncm

    I haven't had long to work with these steppers since I received them and only had a chance to test that they're working properly which they do. However, I should note that when attached to the Duet they are currently quite noisy on idle though I think this has to do with needing to tweak the settings which I haven't had time to do yet (can't be certain though).

    Hope this helps.
    SnowCrash



  • @phaedrux I think it was right after I entered the screen command in terminal, but I'm not entirely sure - it just popped some error up when getting connected that didn't affect anything



  • It may have been a warning that your heater is potentially overpowered because the parameters given predict that it could reach a very high temperature. Does that sound right?


  • administrators

    @cocopufft said in Stepper Motor Advice:

    Hey all,
    I was wondering if anyone had some good recommendations for stepper motors for the Duet 2 Wifi. Here is the kit that I have: https://store.makerstoolworks.com/products/mtw-create-3d-printer-motion-platform-kit
    In doing some research it looks like the steppers recommended for this are Kysan 1124090. However the listed voltage and mH are both above 4 which is not recommended in the choosing stepper motors guide. When looking through the forums, it seems like this model from stepper online is often recommended: 17HS19-2004S1. The only concern that I have with these is it looks like the wires are integrated into the motor as opposed to having a plug. This is my first kit where I'm sourcing parts, so any advice is helpful.

    Those Kysan motors will be just fine for a Cartesian printer using 24V power, like that one. They would also be a good choice if you were using Duet Maestro electronics.

    On a positive note, the duet was ridiculously easy to get hooked up to the internet - guide made everything clear. I did get an error about heating (I think) when first connecting that might be helpful to include in the guide - I restarted the process because I thought I had messed up, but apparently other people have seen this as well and it doesn't affect the process.

    Thanks for the feedback!



  • @phaedrux yup that was it - might be helpful just to drop a note on the instructions that this is normal


 

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