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Choosing Right Stepper Motors (JK42HS40-0504 vs JK42HS48-1204) for Ramps 1.4 3D Printer

sebastiansxc 6087 8
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Treść została przetłumaczona polish » english Zobacz oryginalną wersję tematu
  • #1 16534519
    sebastiansxc
    Level 2  
    Hello,
    I plan to make my own 3D printer using boards and engines available in your store.
    I have a question regarding the selection of engine power for my project.
    The whole is based on the Arduino Mega 2560 with the Ramps 1.4 RepRap overlay and stepper motor drivers A4988 RepRap.

    -What should be the nominal voltage of a 12V motor (JK42HS40-0504) or maybe lower, e.g. 3.6V (JK42HS48-1204)?
    Taking into account the information from the description of the above stepper motor driver, the voltage should be in the range of 8-35V ("Motor supply voltage: 8 V - 35 V")

    -What to the current consumption I understand that the 12V motor has a consumption of 0.5A which does not exceed the maximum current of the controller 1 A per coil, but in the case of the 3.6V motor the consumption is 1.2A which exceeds the maximum current of the controller.
    What in that case? Should a motor with a lower power consumption be selected?


    -So if I would like a more accurate engine with more steps, e.g. 42BYGHM809, then I would have to use another driver that will support such resolution, e.g. Pololu DRV8825? And does it make sense, can the printouts be more accurate?

    The printer will use 4 motors to drive the axles (X-1 pcs, Y-1 pcs, Z-2 pcs) and one motor to feed the feeder.
    Do you have a problem with Arduino? Ask question. Visit our forum Arduino.
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  • Helpful post
    #2 16534729
    Slawek K.
    Level 35  
    I recommend you these engines https://blackfrog.pl/silnik-krokowy-nema-17-nowy-seria-sx-05nm-z-wtyczka-p-135.html
    I have them in two printers and they perform sensational, quiet and have the right torque. I use stepsticks A4988 and DRV8825, I recommend the latter in this price range. TMC2100 are better (super quiet) but you have practically 4 DRV or A4988 for one.
    https://blackfrog.pl/stepstick-c-10_27.html

    pozdr
  • #3 16534742
    sebastiansxc
    Level 2  
    What voltage are they powered?

    edit:
    I had them just opened from this site but this tension ;)

    Added after 1 [hours] 9 [minutes]:

    And what do you use to power the system? What parameters of the power supply?
    I was thinking of buying an ATX power supply and converting it gently into a "workshop power supply"
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  • #4 16534992
    Slawek K.
    Level 35  
    The ramp is powered as standard with 12V. if you are planning a heated table, t buy a 12V 25-30A power supply (on the allegro you will find led power supplies). ATX will not make electricity at a heated table, hotend and engines.

    pozdr
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  • #5 16535004
    Sareph
    Level 24  
    Well, unless the table heater for 230V.
  • #6 16535008
    Slawek K.
    Level 35  
    Quite a risky solution. High voltages in such devices should be avoided, especially since you are constantly poking your hands on the aluminum table.

    pozdr
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    #7 16535015
    Sareph
    Level 24  
    E there, I have two printers with such a heater (500W and 600W), thermal fuses and platform grounding - IMO is much better than high currents and you don't have to play with a powerful power supply. Well, what's up who likes. ;)
  • #8 16535171
    sebastiansxc
    Level 2  
    rs6000 wrote:
    The ramp is powered as standard with 12V. if you are planning a heated table, t buy a 12V 25-30A power supply (on the allegro you will find led power supplies). ATX will not make electricity at a heated table, hotend and engines.

    pozdr


    Why not make it?
    SilentiumPC Deus 600W 80+ power supply
    + 12V1 line load: 26A
    + 12V2 line load: 26A
    And I think to connect all the lines together

    Is it not so that the table consumes the most power during heating and then the consumption decreases?

    What power does such a heated table have?
    12V * 11A = 135W
  • #9 16537008
    Slawek K.
    Level 35  
    It depends on the table, for example 15A. Of course, there are ATX power supplies with high currents, such as the one you pick up costs over PLN 200, while the one I am writing about above, you can buy for less than PLN 100, and from Xbox for PLN 30.

    pozdr

Topic summary

The discussion revolves around selecting the appropriate stepper motors for a 3D printer using an Arduino Mega 2560 with a Ramps 1.4 board and A4988 stepper motor drivers. The user is considering two motors: the JK42HS40-0504 (12V, 0.5A) and the JK42HS48-1204 (3.6V, 1.2A). Key points include the necessity of a power supply that can handle the current requirements, especially if a heated bed is included, with recommendations for a 12V power supply of 25-30A. Concerns about using high voltages and the implications for safety are also discussed, alongside suggestions for alternative power supplies, such as ATX units. The performance of different stepper motor drivers, including A4988 and DRV8825, is mentioned, with a preference for DRV8825 for better performance.
Summary generated by the language model.
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