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Question #: 13252

Question: I ordered the 3-axis medium stepper motor kit. The drivers i recieved were those for the 3-d printer main board, not the modular ones. How am i suppose to wire that up now?

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Please contact customerservice@buildyourcnc.com so we can assist you.

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  • I ordered the GreenBull 5' x 10' kit. The first video for assembly shows that I should have 5 large boards that attach to the table, but I don't have those boards. Is that something I need to build or were they not shipped?

    We apologize for the confusion, however in the very first video that is regarding the assembly, is of the torsion box. We do not included that in any greenBull kit, as we use too sell it individually! However due to high consumption of materials and high cost(both in shipping and for the kit itself) we have removed it from our inventory and no longer sell it.

    This video can be skipped, however if you plan on making a DIY torsion box, this video will be helpful in your build!

    The torsion box is not needed, as the frame itself will be more than sufficient in keeping the machine from flexing or vibrating.

    Click the link to add information to this solution:
    I ordered the GreenBull 5' x 10' kit. The first video for assembly shows that I should have 5 large boards that attach to the table, but I don't have those boards. Is that something I need to build or were they not shipped?

  • Is there a complete wiring diagram for the Medium Combo Kit with the usb board? Your USB tutorial does not cover the modular 2.5a drivers. https://buildyourcnc.com/item/electronicsAndMotors-3axis-100-elcombo

    We are currently getting it completed for us to post it under the 2.5A stepper driver page. However here is the correct wiring procedure.

    First: Wire the 24V power supply to the 2.5A driver, by wiring +V on the power supply to 12-24V on the driver. Next wire the COM on the power supply to Ground(GND) on the 2.5A driver. GND on the driver will also go to the GND on the USB board, for specific axis. (additional 3-4 wires connected to ground will be needed for the other axes as well).

    Second: Wire the USB board to the driver(one driver per axis on the USB board):
    CP on the driver will go to CP on the desired axis on the USB board.
    CW on the driver will go to CW on the desired axis on the USB board.
    5V will go to the VCC pin on the keyboard jog pins on the USB board (check schematic here: https://buildyourcnc.com/item/electronicsAndMotors-electronic-component-USB-Controller-Breakout#prettyPhoto/2/).
    GND on the USB board to GND on the driver. (as specified in step 1).
    EN is not used.

    Personal Note:
    I would recommend that you crimp the VCC pin to a wire which could be split for the other axes as well, each driver will need 5V.

    Third: Wire the stepper motor to the driver, (using either the Nema 23 100-oz or the Nema 17 62-oz stepper motors, the wiring will be the same. For the Nema 23 the yellow and white is not connected.)
    Black to A1
    Green to A2
    Red to B1
    Blue to B2

    Fourth: Repeat steps 1-3 for each driver/motor per axis.

    Mention: Remember that GND on the driver will also go to the GND on the USB board for specific axis, and VCC pin on the USB board (keyboard jog) will go to 5V on all drivers for each axes as well, each driver will need 5V!

    Click the link to add information to this solution:
    Is there a complete wiring diagram for the Medium Combo Kit with the usb board? Your USB tutorial does not cover the modular 2.5a drivers. https://buildyourcnc.com/item/electronicsAndMotors-3axis-100-elcombo

  • I am having difficulty with the wiring on the White Ant. The latest electronics that I received don't seem to be anything like the book or even the tutorials. For instance, the three stepper drivers need 6 pin connectors and ribbon cable. How are they wired? There was no thermocouple wire included. Thanks,

    The whiteAnt is no longer sold; the information on the website is to support legacy customers. We have spoken with you and are sending the materials that you need.

    Click the link to add information to this solution:
    I am having difficulty with the wiring on the White Ant. The latest electronics that I received don't seem to be anything like the book or even the tutorials. For instance, the three stepper drivers need 6 pin connectors and ribbon cable. How are they wired? There was no thermocouple wire included. Thanks,

  • I connected the electronics (for 2 x 4 feet) that I ordered from you. But how do I check if I connected all the wiring properly. There is neither any light on motor drivers nor on breakout board. And the motor shaft also does not move before and after the power supply is given.
  • 3d printer motors not moving fast enough. How should I configure the motor drivers?

    This will depend on the 3D printer that you are using and the mechanics involved. Specifically regarding the motor drivers, software is really what determines the speed of the motor. If the computer is not able to product the high number of pulses that is required for faster motion, then you can reduce the microstepping and configure the software appropriately for the new microstepping so the resolution is corrected (steps/inch or steps/mm).

    Click the link to add information to this solution:
    3d printer motors not moving fast enough. How should I configure the motor drivers?

  • ABSOLUTELY NOTHING WORKS. I HAVE ALL STRUCTURE AND MECHICAL PARTS OF THE BLACKTOOTH CUTTER DONE. HOWEVER WHEN WIRE UP STEPPER MOTOR TO DRIVER. THAT MACH 3 USB CONTROLLER BOARD, TRY JOG MOTOR, WORKS! PREVIOSULY HAD PLANET CNC BREAKOUT HOWRVER, ONLY MOVED MOTORS IN ONE DIRECTION COULDNT CHANGE IT. ANY HELP WOULD BE APRECIATED
  • I am working with a Spur gear that has a 15 tooth 3/8 bore/ 3/8 wide....is the 651ozin stepper motor compatible with this or do I need to get a different motor

    This gear should work with this motor. The shaft on the 651ozin motor is 3/8"

    Click the link to add information to this solution:
    I am working with a Spur gear that has a 15 tooth 3/8 bore/ 3/8 wide....is the 651ozin stepper motor compatible with this or do I need to get a different motor

  • I bought a, 3-Axis NEMA23 CNC Kit (36V/9.7A/382oz-in/KL-4030.but dont know how to set the dip switches on my drivers. The place I bout the kit from isent very good and support.

    That driver (not purchased here) is a standard 3.0 amp driver that will have the dip switch settings on the top of the driver. You will need to determine the amp rating of you motor for the scheme that you wire your motor to the driver (bipolar parallel is recommended in most circumstances but can depend on your power supply output). Check the stepping motor datasheet for your motor to determine this amp rating.

    The other set of switches will be configure the microstepping. This will depend on your mechanical setup (i.e. lead screw, rack and pinion, roller chain, timing belt, etc.) and the specifications of such mechanical parts.

    This general formula (which can be searched using the Customer Service Live with many examples): step/inch = (natural motor steps * desired microsteps) / (mechanical travel for one motor rotation)

    Additional Information:



    Additional Information:



    Additional Information:

    Click the link to add information to this solution:
    I bought a, 3-Axis NEMA23 CNC Kit (36V/9.7A/382oz-in/KL-4030.but dont know how to set the dip switches on my drivers. The place I bout the kit from isent very good and support.

  • Provided they will fit and I install a ventilation/cooling fan, is there any reason why I should NOT mount the electronics (breakout board, stepper drivers and power supply) inside the gantry box in my BlackToe 2x4?

    First, see Jack's build: https://www.buildyourcnc.com/JackRehak.aspx

    The difference between mounting the electronics in the gantry is that the connection from the computer (signal level) is long. The alternative, where the electronics is near the computer, the motor cables are long (to reach from the drivers to the motors).

    Mounting the breakout board, drivers and power supply within the gantry will cause you to have a long signal connection from the computer to the breakout board. That is fine as long as the cable is long enough, possibly shielded, and can carry the signal at long cable lengths. Make sure to have the cable well away from the motor cables as these will cause quite a bit of interference.

    Click the link to add information to this solution:
    Provided they will fit and I install a ventilation/cooling fan, is there any reason why I should NOT mount the electronics (breakout board, stepper drivers and power supply) inside the gantry box in my BlackToe 2x4?

  • How can I decrease the rapid acceleration of the cutter from a completed cutting operation to a new location so that the stepper motor will not lose its steps and mess up the machine zero settings? I am using CamBam and Mach3 on my machine with a chain drive. what is the best way to reduce accleration

    Decreasing the speed of acceleration in the cutter? Meaning of your router/spindle?, To modify the speed of a router will be going to the router itself and modifying the speed, but if a spindle is being used modifying it will be done either manually in the VFD (VFD Setup:
    Change PD001 to '0' (source of run commands)
    Change PD003 to 300 (main frequency - Hz)
    Change PD004 to 300 (base frequency - Hz)
    Change PD005 to 400 (max operating frequency - Hz)
    Change PD006 to 2.5 (intermediate frequency - Hz)
    Change PD008 to 220 (max voltage - V)
    Change PD009 to 15 (intermediate voltage - V)
    Change PD010 to 8 (minimum voltage - V)
    Change PD011 to 100 (frequency lower limit - Hz)
    Change PD142 to 7 (rated motor current - Amps)
    Change PD143 to 2 (motor pole number)
    Change PD144 to 3000 (rated motor revolution))<- make sure these are your settings in the VFD. If the spindle is wired to the breakout board and is working through Mach 3 then the modification will be done in your CamBam/Feed rate settings.

    Click the link to add information to this solution:
    How can I decrease the rapid acceleration of the cutter from a completed cutting operation to a new location so that the stepper motor will not lose its steps and mess up the machine zero settings? I am using CamBam and Mach3 on my machine with a chain drive. what is the best way to reduce accleration

  • How do I wire up multiple E-stop to breakout board, does each E-stop need there own pin? If not since there are only 4 screws on stop 2 for no and 2 for nc do you just splice the wires together if your only using 1 pin? Thanks
  • How do I know how to hook up the red fly? What color wires do I solder on which pin of the connectors? Was there suppose to be any instructions that came with it, or the entire greenbull for that matter?

    The greenBull instructions are found on our website. Each machine has a page, which you can locate by clicking on "CNC Machines" from the left hand menu and choosing the particular machine you have. Scroll to the bottom of that machine page and you will find complete instructions. The page for the greenBull 5X, for example, is : https://buildyourcnc.com/Item/cnc-machine-greenBull-v4-5X

    The redFly is typically sold with motors already wired to conductor cable with 4-pin connectors; these need simply to be plugged into the control box. There is no soldering required. If you have a different configuration, please contact us directly at techsupport@buildyourcnc.com with information about your specific application (and a photo, if possible) and we will be happy to provide you with further guidance.

    Click the link to add information to this solution:
    How do I know how to hook up the red fly? What color wires do I solder on which pin of the connectors? Was there suppose to be any instructions that came with it, or the entire greenbull for that matter?

  • Hi Guys, I just received an order for some cable and realized the moment it arrived that I Miss-ordered. I ordered 8 wire instead of 4 wire. Can I exchange?

    Certainly. The easiest way to process this and get you the correct item, re-order the new item and go ahead and send the mis-ordered item back with a note that you would like a refund for this order.

    If time is not a factor for you but you don't want to be out-of-pocket, then simply send the item back (with a note that you need a refund) and you can re-order after the refund is made.

    Click the link to add information to this solution:
    Hi Guys, I just received an order for some cable and realized the moment it arrived that I Miss-ordered. I ordered 8 wire instead of 4 wire. Can I exchange?

  • What is the 24VDC Power requirement for the Pokeys47CNC? 1A, 2A? ...I'm running a separate 36VDC PS to the Stepper drivers and a 24VDC PS to the Controller.

    Polabs prepared step by step user guide for PoKeys57CNC and Mach4 to try answering such questions. It is available in our downloads section: https://www.poscope.com/wp-content/uploads/downloads/Pokeys/LibrariesAndPlugins/Mach4 and PoKeys57CNC - step by step guide.pdf

    Click the link to add information to this solution:
    What is the 24VDC Power requirement for the Pokeys47CNC? 1A, 2A? ...I'm running a separate 36VDC PS to the Stepper drivers and a 24VDC PS to the Controller.

  • I have a KL-4030 stepper motor driver that I only have about an hour use on it but seems to be bad already. Has anyone out there had the same problem?

    The KL-4030 is a Keling 3.0 amp stepper motor driver. These are generally pretty robust drivers. You mentioned in the question that it worked for one hour. This sounds like it could be a contact issue with the wiring in the terminals. I would recommend that you check all of the connections. The terminals that are used in these drivers have terminals that are easily used incorrectly.

    Make sure to open the terminal all the way using a small screw driver. Then insert the exposed wire into the opening and re-tighten the terminal. Make sure of a good connection by tugging on the wires.

    Also, check kthe digital wires that connect from the driver to the control board.

    Click the link to add information to this solution:
    I have a KL-4030 stepper motor driver that I only have about an hour use on it but seems to be bad already. Has anyone out there had the same problem?

  • Hello there, I am a beginner in trying to control a stepper with a pc, you can sell me a kit to control my motor from the pc. I already have a motor, driver, and power supply

    All you need is a CNC controller like the following options:

    https://www.buildyourcnc.com/item/electronicsAndMotors-electronic-component-breakout-Mach3-USB-Board

    This controller is easy to connect using standard wire screw terminals and works with the mach3 control software.

    https://www.buildyourcnc.com/item/electronicsAndMotors-electronic-component-breakout-Mach4-mach3-USB-ethernet-Board

    This controller is a little bit more difficult to connect, but is a more feature-rich controller and will work with both mach3 and mach4 CNC control software titles.

    Specifically, a CNC controller connects to the computer via a USB cable and connects to the motor drivers. These controllers also connect to the limit switches, spindle/router control, air/fluid/mist control, etc.

    Click the link to add information to this solution:
    Hello there, I am a beginner in trying to control a stepper with a pc, you can sell me a kit to control my motor from the pc. I already have a motor, driver, and power supply

  • Are the stepper motors on x and y axis suppose to be hot after running for approximately 30 min. I can touch them but they are hot.

    If your motors are hot to the touch, this is normal. Current is being drawn by the motor coils as the motor moves and as the motor stays at a position. If the motor is not using the current in the coils to move (holding it's position), the energy will be translated as heat (rather than motion, sound or light). Even while moving, some of the energy will be lost as heat. Remember that energy cannot be created nor destroyed.

    Additional Information:



    Additional Information:



    Additional Information:

    Click the link to add information to this solution:
    Are the stepper motors on x and y axis suppose to be hot after running for approximately 30 min. I can touch them but they are hot.

  • What would I need to purchase to increase the Z axis stepper motor up one size from the one that comes with the Blacktoe 4.1 with computer? I can't get Patrick to answer e-mails, so I'll try here.

    Thanks for the question. The blackToe z-axis motor is a NEMA 24 425 oz-in stepping motor and the next step up is a NEMA 34 651 oz-in motor located here: https://buildyourcnc.com/item/electronicsAndMotors-nema34-651ozin


    To make it work on the blackToe CNC machine, you would need to fabricate a new mount and the top bearing mount, or request us to fabricate it for you by calling the office.

    Curious, why the need to increase the size? If the motor is having a difficult time, there may be a deeper mechanical issue at play. One issue you may have is that the bearings are needing shim washers to separate the inner and outer races. If the two races are rubbing against the coupling or collar, the bearing may be difficult to turn under the weight of the assembly. If there is too much friction between the anti-backlash nut and the lead screw, you can add some 2-in-1 oil, or other similar lubricant.

    Thank you for using our Customer Service Live. Patrick often answers these questions. We prefer this system over email as these questions will benefit others.

    If you have additional questions or need more explanation relating to this question, please add to this answer.

    User response:
    I have added the shim washer between the bearing and coupling and have always used a light oil on the lead screw. I halved the acceleration on the Z-axis. Then I re-ran a topo that took two hours on the finish pass. No change in my results - the Z-axis slowly dropped until when the program finished and everything went back to the start point, the Z axis was lower by 0.378 inches than when it started at 0.800 above the surface.

    Any suggestions would be appreciated. Maybe I need more shim washers in the assembly between all the bearing surfaces?

    buildyourcnc response:
    Before you add a larger motor, check these first:

    1. take the motor off by remove only the motor screws and removing the motor as well as the coupling half that is secured to the motor shaft.

    2. Turn the lead screw by hand. This will still be connected to the z-axis assembly by the anti-backlash nut, so you will feel the resistance in the upward motion of the z-axis. Does it feel relatively easy to turn, or very difficult?

    3. If the resistance is relatively normal with respect to gravity and normal friction between the anti-backlash nut and the screw, then you may want to half the velocity as well on the z-axis motor tuning, and even reduce the acceleration a bit more. Doing topographical layouts should not require fast z-axis motor travel. Be careful not to lower the z-axis acceleration if you are using constant velocity as this can make the topo "too smooth" where there may be features such as cliffs present. If you need to lower acceleration drastically, then use exact stop rather than constant velocity.

    Another gotcha that may be causing this phenomenon is motor cable/wire chafing. We had this same issue crop up where two wires were shorting only at a specific position because the wires moved just enough to cause these wires to connect. This was caused by a zip tie. Zip ties have a very sharp edge that can cut the insulation of the wire. A hint of this problem is if this phenomenon is only present after working successfully with the machine for a greater period of time.

    Use response:
    I bought a new lead screw, bearings, antibacklash nut, and shim washers (WHICH NEED TO BE IN YOUR ONLINE CATALOG) and installed them. (Like another commentor on this site, my lead screw wouldn't go through the bearings. Simple solution was to chuck it into my drill press and 400 grit smooth it until a snug fit was had. Lowest RPM.)

    Anyhow, I ran another Topo yesterday and got the same results. The wires are not frayed, the acceleration has been halved, the speed reduced to a crawl. When testing manually, twisting the Z axis up was very hard to do compared to lowering it.

    I have thought about a counterbalance of some type, but that introduces lots of other problems.

    Anything you can thing of will certainly help.

    I can send pictures, etc.

    Thanks!

    Buildyourcnc response
    What router/spindle do you have installed?

    User response:
    The one you sold me - 110 V, 1.5KW water cooled.

    User response:
    This problem of the z axis drift has been evident since I first started using the machine a couple of years ago. Lithophanes, stipples, topographic and other heavy z axis users have been particularly bad. It is to the point that I am turning away opportunities for lack of capability.

    Buildyourcnc response:
    I think all options may be exhausted. We will design a new mount that holds a large motor. Please give us a call so we can arrange to send that out to you.

    We just determined that the existing mount need to be adjusted by about one millimeter for the main mounting hoes for the larger NEMA 34 motor to fit. The overall mount will look the same but the outside hole spacing will be adjusted by a very small amount to match the larger motor mounting holes. This new adjustment will be included with all new machines. We will send you the new mount (consisting of two structural pieces) and the longer screws that will be needed to extend to fit the motor frame thickness.

    Additional Information:


    Additional Information:
    They didn't send the longer screws, nor the new required coupling, but I finally got it together and it works just fine. It returns to precise Z zero every time.

    But the motor runs pretty hot because I think it should be run at a higher voltage than the current power supply provides.

    Any new sales of Blacktoe 4.1 should include this modification.

    Cheers.

    Click the link to add information to this solution:
    What would I need to purchase to increase the Z axis stepper motor up one size from the one that comes with the Blacktoe 4.1 with computer? I can't get Patrick to answer e-mails, so I'll try here.

  • I need the calculation to determine the stepper motor torque to find the load that it can lift using a lead screw at 1/2" diameter with 13 TPI.

    There are two main questions that we can answer with respect to motor torque and the mechanical advantage of lead screws, 1) What torque motor do you need to lift a particular weight, or 2) What maximum weight will my motor torque be able to lift.

    This formula uses Newtons (N) as it's final unit. Use this with the included radius (R) to determine the torque. Newtons can easily be converted to lbs or ounces using online conversions.

    Effort = Sf + (Load/(2 x pi x (R/p) x Se))

    where:
    p = pitch of the screw
    Se = screw efficiency = Standard lead screw will be between 20% (.2) and 40% (.4)
    Sf = static force. This is the force that is needed to start the movement. The number may be eliminated, but it is good to use a number in the 5 N to 20 N range.
    Load = the expected load that the effort will need to carry (i.e., the router and the included axis assembly that the motor will need to lift)
    R = radius of the lead screw


    This formula is based on the "law of the machine"

    The final effort amount with its unit of newtons and R will be the torque. For example, if the effort comes to 100 N (newtons) and the R is .5 inches, then you can assume that the effort is 50 N-in since it would take twice the effort to turn form the one inch mark from the center of the shaft.

    Example:

    Load = 90 N (20.2 lbs)
    R = 1 inch since that is the length from the center of the shaft that the motor is rated
    p = 1 inch / 13 = .08 inches

    Effort = 5 N + (90 N / (2 x 3.14 x (1 / .08) x .2))
    Effort = 5 N + (90 N / (6.28 x 12.5 x .2))
    Effort = 5 N + (90 N / (15.7))
    Effort = 5 N + (5.73 N)
    Effort = 10.7 N = 2.4 lbs = 38.4 oz-in

    I am putting the oz-in on the end because the formula considers the distance from the center of the shaft to be one inch.

    Therefore, a 425 oz-in motor would be able to lift a 20.2 lb Router with its accompanying assembly. If the assembly and router is heavier, plug in the numbers and determine the effort required.

    With a bit of algebra, the formula can be rewritten to find the load:

    Load = (Effort - Sf) x (2 x pi x (R/p) x Se)

    Another formula that does not consider friction at all:

    Effort = (Load x p) / (2 x pi x R)

    Lets see if we get similar results:

    Effort = (20 lb x .08 inches) / (2 x 3.14 x 1)
    Effort = 1.6 / 6.28 = .255 lbs = 4.08 oz-in

    The results from both formulas appear to be very small because a 13 TPI screw will have enormous mechanical advantage.

    It is evident that the first formula that does consider friction that we are loosely estimating is far more conservative than the second formula. Either way, even the most conservative formula shows that the 425 oz-in motor will handle very large weights. If you are using a lead screw with only two turns per inch, .5 inch pitch, you can determine the requirements with the first formula.

    Example for a 10 TPI 5 start (2 turns per inch) lead screw:

    Load = 90 N (20.2 lbs)
    R = 1 inch since that is the length from the center of the shaft that the motor is rated
    p = 1 inch / 2 = .5 inches

    Effort = 5 N + (90 N / (2 x 3.14 x (1 / .5) x .2))
    Effort = 5 N + (90 N / (6.28 x 2 x .2))
    Effort = 5 N + (90 N / (2.512))
    Effort = 5 N + (35.83 N)
    Effort = 40.828 N = 9.18 lbs = 146.88 oz-in

    Customer Response:
    thank you so much

    Additional Information:


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    Additional Information:
    how do i calculate torque of stepper motor if lead screw coupled to motor shaft and load applied by lead screw on plate is 100 kg by vertically

    Additional Information:
    Pls


    Additional Information:
    1m 16mmdiameter ball screws calculations


    Additional Information:
    What is the max load that 2 NEMA 17 stepper motors (spaced 2 feet apart, both will be pushing up on the same gantry) can lift while using a rod with the following specifications T8 OD 8mm Pitch 2mm Lead 4mm for each motor.

    Additional Information:


    Additional Information:
    1

    Click the link to add information to this solution:
    I need the calculation to determine the stepper motor torque to find the load that it can lift using a lead screw at 1/2" diameter with 13 TPI.

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