[ Log In ]
[ Register ]

Question #: 7972

Question: my x motor seems to ignore some movements causing it to be innacurate, how do i fix this?

Current Solution

If one or more motor is not responding, please follow the troubleshooting directions below:

For parallel Bob only! Make sure both the parallel and USB are connected.

Re-check wiring, and connections for continuity (no breaks in the wires) and check for correct wiring locations from driver to BoB.
Check dip switch settings on the driver.
Check components, by swapping the motors (ex. y-axis motor to z or x-axis driver and z or x-axis motor to y-axis driver) to check if motor functions on another driver.
Depending on software check step low active (mach 3) or invert pulse (planet-cnc) for the axis which is not responding.
Mach 3 - config/port & pins/motor outputs / Planet-CNC - file/settings/axes

Respond:

Other Possible Solutions to this Question

  • I have an engine NEMA 34 from Y axis on my green bull that do not response, I already check connections and everything seems to be OK, how can I check that the motor it's working properly or not?

    If one or more motor is not responding, please follow the troubleshooting directions below:

    For parallel Bob only! Make sure both the parallel and USB are connected.

    Re-check wiring, and connections for continuity (no breaks in the wires) and check for correct wiring locations from driver to BoB.
    Check dip switch settings on the driver.
    Check components, by swapping the motors (ex. y-axis motor to z or x-axis driver and z or x-axis motor to y-axis driver) to check if motor functions on another driver.
    Depending on software check step low active (mach 3) or invert pulse (planet-cnc) for the axis which is not responding.
    Mach 3 - config/port & pins/motor outputs / Planet-CNC - file/settings/axes

    Click the link to respond:
    I have an engine NEMA 34 from Y axis on my green bull that do not response, I already check connections and everything seems to be OK, how can I check that the motor it's working properly or not?

  • When I run a file with a lot of z movements, the Z seems to get lower

    Sounds like it is stalling as the z is trying to move up. I would first try putting 3-in-1 oil on the screw and run the z up and down a lot as fast as possible so you can confirm the z is capable again. It could also be the shaft or the lead screw slipping in the coupling. Finally, check the wiring where there may be zip ties or other places where the wires are fastened and look for chafing. This can cause intermittent shorts in the wires.

    Click the link to respond:
    When I run a file with a lot of z movements, the Z seems to get lower

  • Is there a manual or some documentation of how a binary value in the printer port translates to position on each motor?

    The parallel (printer cable) port is uses the computer as its main source of pulse trains to operate the motor driver directly. Parallel ports are a direct connection from the processor commonly referred to as GPIO pins (General Purpose I/O pins) and provides a convenient and powerful way to interface with the computer. The parallel breakout board is included in those kits only to condition those signals for use with the drivers.

    The USB serves at the actual controller, sending the pulse trains, but the computer sends simple human readable instructions to the USB controller to tell the controller how to send pulses.

    The non-technical differences that may serve as the most important information to you is that the parallel configurations allow for a wider variety of industry standard software that can be used to control the cnc machine. The USB that we offer requires the operator to use a software called Planet-CNC software which is a very well made and feature full cnc control software.

    Additional Information:


    Additional Information:

    Click the link to respond:
    Is there a manual or some documentation of how a binary value in the printer port translates to position on each motor?

  • I received the electronics for book build cnc machine. I need to know how much weight the z-axis motor can hold since my (craftsman) router seems to be heavy. It is 2HP with variable speed

    The motor is helped by the mechanical leverage of the screw. The 425 oz-in motors that are included in the standard electronics combo has very high torque for that type of machine. You will have no problem using that motor for the book machine.

    We use that motor for very heavy spindles on the blackToe and blackFoot CNC Machine kits.

    You will need to do the mechanical leverage calculation along with the torque of the motor to determine the actual weight it will lift. The calculation will need to consider the type and pitch of the screw and it would also consider the gravity constant of 9.8 m/s/s.

    If you need me to determine this formula and work out the calculation based on the screw you are using, please let me know.

    Additional Information:
    thank you for the reply. I would be really good to know the calculation. The lead screw is 1/2" diameter with 13 TPI. Please provide the calculation. And one more question. If I am cutting 18mm MDF with 6mm cutting bit (so 6mm pass), what can be the maximum speed rate of cutting and spindle speed of router?
    thank you

    Click the link to respond:
    I received the electronics for book build cnc machine. I need to know how much weight the z-axis motor can hold since my (craftsman) router seems to be heavy. It is 2HP with variable speed

  • How do you remove the collet on the 2.2 kW spindle? It seems to be a part of the retaining nut.

    You'll need to twist and pull the collet while also canting it side to side until it comes free from the nut. It is not actually attached to the nut it just takes some jiggling to separate the two.

    Click the link to respond:
    How do you remove the collet on the 2.2 kW spindle? It seems to be a part of the retaining nut.

  • I purchased a 4ft X 8ft Blackfoot CNC machine in 2015 and to this date have not been able to use it. How can I get some help. Thank u
  • My Nema 24 motors make high pitched alarm sound when changing directions quickly - what could be the cause? Red LED is lit on Microstep Driver CW230 but everything seems to run fine - is this a problem?

    Stepper motors are known to make different type of noises when in motion. So there should be no issues in regards to accuracy with the steppers. You also might be able to lower the noise that comes from the motors, by adjusting the acceleration and velocity of the motors. This usually tends to either make different noises or lowers the pitch of the noises.

    Cool video(personal opinion, does not relate to BYCNC):

    Click the link to respond:
    My Nema 24 motors make high pitched alarm sound when changing directions quickly - what could be the cause? Red LED is lit on Microstep Driver CW230 but everything seems to run fine - is this a problem?

  • How do I secure the non-motor end of the lead screw for my 'Book' machine build? Does it just sit inside the bearing or do i use a nut to lock it in place? I did not see any instructions for this in the book.

    Use a clamping collar (if you are using an ACME lead screw) or a couple of 1/2 nuts (if using an allthread) against the bearing to keep the bearing in place and make sure there is no axial play.

    Click the link to respond:
    How do I secure the non-motor end of the lead screw for my 'Book' machine build? Does it just sit inside the bearing or do i use a nut to lock it in place? I did not see any instructions for this in the book.

  • What is the cp- and cw- on the 2.5 Stepper motor driver modular unit. my motor will not run. i believe this is my wireing issue

    Nema-17/23 are wired, notice that the nema-23 has a white and orange wire (those are not needed):
    Black to A+
    Green to A-
    Red to B+
    Blue to B-

    Also if using a parallel breakout board the wiring from the driver (https://www.buildyourcnc.com/item/electronicsAndMotors-parallel-breakout-relay#prettyPhoto/2/):
    (X-axis 2-CP-,3-CW-)
    For our USB breakout board (https://www.buildyourcnc.com/item/electronicsAndMotors-electronic-component-USB-Controller-Breakout#prettyPhoto/2/):
    (x-axis CP-,CW- to ground)

    Additional Information:
    I have USB breakout board connected as: CW-> 5V, CP -> CP, and GRD to GRD/COMM next to 12-24V Pin.
    The motor works perfectly in one direction.
    Will not jog in the other Direction.
    I still do not know what is CP- and CW- as it is not labeled on the board, unlike your other motor controllers.
    Can you submit a wiring diagram for the 2.5 AMP controller


    Additional Information:
    is there a wiring diagram to connect a usb break out board which has 4 pins for each axis output to thedb 25 connector on a driver board used with parallel port configuration

    Additional Information:

    Click the link to respond:
    What is the cp- and cw- on the 2.5 Stepper motor driver modular unit. my motor will not run. i believe this is my wireing issue

  • I have the usb breakout board https://buildyourcnc.com/Item/electronicsAndMotors-electronic-component-USB-Controller-Breakout and need to run the A axis as a slave the software greys out the box how do I fix this?

    You will need PlanetCNC software for the USB breakout board and when plugging in the USB the computer should automatically recognize the board, however you can go into device manager to see if the USB terminal is working correctly.
    The parallel breakout board; the USB is not a connection terminal rather than a power source, and the parallel port will be the communication terminal.
    The items you will need for a water cooled spindle would be: water pump, silicon tubing(length desired by customer), a extension cord(from a hardware store(orange))(1 same gauge wire/length as extension cord).

    Click the link to respond:
    I have the usb breakout board https://buildyourcnc.com/Item/electronicsAndMotors-electronic-component-USB-Controller-Breakout and need to run the A axis as a slave the software greys out the box how do I fix this?

  • Using the PoKeys57CNC how to you connect two motors to the Y axis and how is Mach 4 configured for this?

    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 respond:
    Using the PoKeys57CNC how to you connect two motors to the Y axis and how is Mach 4 configured for this?

  • I have my motors wired like the wiring diagram I have two motors on Y axis how do I wire the second motor

    To move two stepper motors simultaneously with the same signal, simply wire the two stepper motor drivers to the same interface board signal terminals (CP and CW).

    Additional Information:
    using a ardino uno controller and a cnc sheild on top of that how to wirer 2 motors to 1 axis its the x axis ?

    Click the link to respond:
    I have my motors wired like the wiring diagram I have two motors on Y axis how do I wire the second motor

  • My stepper motor has little to no torque on anything less than 1/4 steps.. tested on two drivers verified to be working. Can this be remedied?

    For our motors, you must verify the correct wiring for each.
    425 oz-in motor: (Wiring: Red and Blue to A+, Yellow and Black to A-, White and Brown to B+ and Orange and Green to B-.)
    651 oz-in motor: (Wiring: Red to A+, Green to A-, Yellow to B+ and Blue to B-).

    Click the link to respond:
    My stepper motor has little to no torque on anything less than 1/4 steps.. tested on two drivers verified to be working. Can this be remedied?

  • How can I determine which wires on my stepper motor bellong to A+ A- B+ or B-?

    You can use a multimeter to determine the wires of the same coil (i.e A+ and A- belong to he same coil). The wires that are connected on the same coil will have relatively low resistance. A wire from one coil to another coil with have no continuity since the two coils are not touching each other.

    Click the link to respond:
    How can I determine which wires on my stepper motor bellong to A+ A- B+ or B-?

  • Can drawings made on Sketchup be imported to Mach 3 or Photocarve and used to make an item? How could this be done?

    Yes, this set of tutorials will show the process of something created in SketchUP and cut out on a CNC machine using toolchain consisting of SketchUP, CamBam and Mach3.

    https://buildyourcnc.com/tutorials/Tutorial-sketchup-fabrication-fabricate-cad-cam-dxf

    Additional Information:
    How do I get started I would like to build a cnc router. Making the machine I can do, but I am weak on cad,cam and mach3. I am thinking about a 4’x4’. Do you have plans I can buy?

    Additional Information:
    horrible tutorial, how many people to build one cabinet, obviously you guys have no clue what your doing

    Click the link to respond:
    Can drawings made on Sketchup be imported to Mach 3 or Photocarve and used to make an item? How could this be done?

  • HOW DO I DETERMINE THE AMOUNT OF SCREW WEIGTH THAT MY MOTOR CAN HANDLE

    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:


    Additional Information:


    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

    Click the link to respond:
    HOW DO I DETERMINE THE AMOUNT OF SCREW WEIGTH THAT MY MOTOR CAN HANDLE

  • I want to purchase some items from your co. How do i go about it. I already have the buildyourcnc book and wand to begin.

    For purchasing on our website, our account log in is a safe way to keep your personal data at hand for future orders. However we do not keep any bank information in our systems, it is a single use system.

    Now dealing with the cnc book, you can view our web version of the book with a list of materials and hardware that will be needed here (https://www.buildyourcnc.com/cnckitintro.aspx).

    Adding the items to your cart in the quantity's needed, now for certain items for example, or ACME screws, and aluminum angles will require a total length needed, but the specific lengths required will have to be email here (customerservice@buildyourcnc.com) or called here (281-815-7701) with the completion of your order.

    Click the link to respond:
    I want to purchase some items from your co. How do i go about it. I already have the buildyourcnc book and wand to begin.

  • What side of the x and y axis do you mount the stepper motor to? If it does not matter what side, do I have to change something in mach3?

    It is usually best to mount the motor in a way so it is spinning clockwise to avoid confusion.

    Additional Information:
    ok, but lets say the motors turn clockwise. if you mount it to ether side of the y axis it will pull to that side so what are the correct positions of the stepper motors. is it the left side or the right side of the y axis and also is it the front or back of the x axis?

    Additional Information:
    cw250 with mach3 controller

    Click the link to respond:
    What side of the x and y axis do you mount the stepper motor to? If it does not matter what side, do I have to change something in mach3?

  • How long does it take to ship to Israel 3 nema 11 stepper motors ?

    Unfortunately I am not able to give an estimate of shipping time. This is because there are multiple shipping options, Some of them cost more than others, but ensure the package arrives in a certain number of days. Others do not give a number of days, and many factors could change the length of shipping time, such as weather, or busy season. It would be best to choose an option you are comfortable with the price of, and then Google search the typical times it takes for that option to get to you, or call the shipping company and request that estimated time from them.

    Click the link to respond:
    How long does it take to ship to Israel 3 nema 11 stepper motors ?

Get Help with:
This Product
Orders
Tech Support
Sales
This Product
Order Query
Tech Support
Sales
Not logged in. Log In Register
Track Order(s)
View Order(s)
I Want to Schecule a One-On-One Paid Tech Support Session
Book an Appointment Pertaining to a BuildYourCNC Product (Free)
Ask a Quesion Below (Free):
Book an Appointment Pertaining Other Equipment ($60/half hour)
Book an Immedite Appointment Pertaining Other Equipment ($120/half hour)
Ask a Quesion Below (Free):
Waiting for response... I may not answer immediately, but I was notified on my cellular phone so my response is forthcoming. If I don't respond immediately, you can always go to the [My Account] page to see all of our chats at any time.