We don't offer those drive pullies with a 3/4" bore at the moment. We can supply them if you are willing to wait. If so, what is the pulley pitch, how many teeth and the width of the belt.

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Meant to say pulleys, not pullies.

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Do you offer or can recommend a place where I can buy the Drive Pulley for NEMA 43 Stepper Motor (1586 oz-in 3/4" single shaft) 5.5 Amps?

That depends on a few factors. In most cases, three 3.0 amp motors and drivers will not exceed 8.8 amps of available current. All of the motors would need to be at full torque to reach the 9 amps (3x3). This depends on the mechanical method you are using for each motor, and how you are using the machine. In most cases, only two motors are moving at a time (i.e. 3D carving where the X and Z are moving simultaneously and the y only moves to go to the next row). In traditional cutting profiles, only the x and y are moving simultaneously and the z-axis moves at the location it needs to start cutting the next layer.

With that said, it is ok to add an extra power supply if you feel you need more available current.

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[51] Would the single 8.8A power supply be undersized for 3 6.0A Drivers? would you recommend getting another PS?

Yes, the 651 oz/in motor requires a driver that is compatible to the motors (the motor will draw 6 amps max and the driver paired with this motor will be able to allow for a 6 amp draw). I would also recommend a 36 volt power supply for better high velocity performance.

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I HAVE ONE OF YOUR SMALLER STEPPER MOTORS RUNNING MY X AXIS BRIDGE CRANE AND IF IT IS MOVED TO FAST THE MOTOR SOUNDS LIKE SKIPPING STEPS WILL 651OZ REQUIRE A DIFFERENT POWER SUPPLY CONTROLER?

If you are using a spindle with a VFD, there is a 24 volt power supply that will provide the correct power for the V+ and V- on the Mach3 USB. The 12V option is only if you are using the limit switches on that side of the board, but if you are using it to control spindle speed and for the outputs, it's best to use a 24V power supply, or the 24V output on the VFD.

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Closed loop

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Can i use 12v in the 24v input

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The Mach 3 usb board requires an additional 12V power supply. How many amps would you recommend? Would a 1A wall adapter suffice.

The 2.5 amp driver can only accept a power supply between 12 volts and 24 volts. If a 36 volt power supply is used for this driver, the main driver chip will exceed its maximum voltage rating and cause failure.

If you need to spin your motor faster, you can either use a more appropriate driver (i.e. 3.0 amp driver) or you can change the mechanical parts so the axis has faster travel.

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Can I connect a 36V power supply to 2.5 AMP Stepper Motor Driver. On the actual driver it shows 12V - 24V, but in the description and data sheet it indicates that it can accept 8V - 45V. Will I benefit from more powerful power supply. Thanks

Yes, the 651 oz/in motor requires a driver that is compatible to the motors (the motor will draw 6 amps max and the driver paired with this motor will be able to allow for a 6 amp draw). I would also recommend a 36 volt power supply for better high velocity performance.

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I have one of your smaller stepper motors running my X AXIS bridge crane and if it is moved to fast the stepper motor sounds like it is skipping steps will the 651oz stepper motor require a different power supply and controler?

The NENA 14 motor is paired with this driver and will work very well: https://buildyourcnc.com/item/motion%20electronics-steppermotordriver-newbiehack-Motor_Drivers-2!5_Amp_modular

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I cannot find a driver for the NEMA 14 Stepping Motor (17 oz-in 1/4" dual shaft) on your site, would something like the Pololu DRV8834 be okay? (I note that the stepper requires 2.7v)

If the sensors are NC (normally closed) you can wire them in series. If the sensors are NO (Normally Open) you can still wire them to the same input, but the wiring needs to be in parallel (like a ladder). I have more information on the following video:

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[788] Thanks for the oportunity to ask, I am building a cnc and using npn closed sensors could you help me with the conection of these, do i still connect them in series if i use more than two in each axis. Also you mention that a stop switch should be connected grd and input to the controller would that be done after the 24v power supply. Thanks r

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

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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 haven't delved into using encoders with stepping motors too much. From my research, you need to have a controller that can provide the closed loop control, rather than software handling that process. I have also found from my research that using encoders on stepping motors is generally used to stop the machine in the case that the motor failed to achieve the commanded position for some reason and gives the user the chance to correct and continue with the job.

If you want proper closed loop control, it may be best to go with servos and servo controller that provide the closed loop control within the real of those two components.

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I HAVE NOT SEEN ANY REFERENCES TO STEPPING MOTOR ENCODER FEED-BACK FOR CLOSED LOOP CAPABILITY IN OF THE HARDWARE YOU SELL. THIS A SUPPORTED FEATURE WITH HARDWARE/SOFTWARE SELL?

We have not had any issues with stock firmware on the AWC708lite. Upgrading the firmware will be at your own risk. We can contact our supplier and see if they can provide a suggestion for updating firmware. Contact customerservice@buildyourcnc.com to inquire with a person who can help.

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Working area setting

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Working area setting

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what is the recommended firmware for the awc708c laser controller? I see this download on the Sinjoe site: AWC708 Lite Update Firmware 160901L1

Yes, if you need a replacement part on your machine please call us at 281-815-7701.

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I have a blacktooth laser engraver. The Y Axis stepper motor needs to be replaced. Can you please provide me with the information I would need to replace this motor.

If the motor starts acting rough or is excessively trying to move without physically moving the input shaft. Re-check that your pins are in the correct settings and always set the amps required to the closest needed but not exceeded (ex. required 3.00A, but only having 3.14A revert from using 3.14 and go lower to 2.57A).
Also a software issue that can affect the motor is Config/MotorTunning/(x,y,z)-axis, if you are trying to push your motor to move at a faster rate by modifying the acceleration and velocity could cause your motor to fail if the settings are to high. Lastly out of those two tests, would re-check wiring for continuity lastly.

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Also, even if the wiring was checked thoroughly, re-check the wiring for any chafing from wire ties or any other means of causing a short with two or more of the motor wires.

You can also try swapping the motors from another axis to determine if the cause is derived from the driver or the motor.

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I disconnected the stepper motor entirely except left the yellow and blue wires tied together and the motor still made the sound when manually rotating the shaft. When I disconnected the yellow and blue wire the motor rotated smoothly again, so there must be a short inside the motor. Is there a warranty on the motors you sell?

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The X-axis stepper motor on my BlackToe suddenly started acting up. It is wired bipolar series, and was working great but then in the midst of a cutting operation the stepper started sounding rough- as though one of the phases was shorting out. However, all the connections and wires are in tact. Any ideas what would most likely cause this?

This video should provide enough guidance to understand the PWM signal on the Mach3 USB controller:

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[575] Hello, I'm wondering if you can provide advice how to wire this USB board where for spindle I would like to use chinese servo motor and driver (TD3) - speed control mode. Especially how to connect - AVI, ACM and 10V (24V is clear). I am still not sure how to power on and off spindle itself. Thank you in advance. Vaclav

The motor with that model number is here: https://buildyourcnc.com/item/electronicsAndMotors-nema24-425ozin

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In looking for a stepper motor amongst old parts in my lab, I found one with a sticker that says buildyourowncnc.com and PN SM60HT86-2008BF U2 on it. I found a Q&A on your website that says it's a NEMA 24 motor with 425 oz/in holding torque. I was wondering if you were able to confirm this? Any specs sheets and details of the motor would be much appreciated

All of our CNC machines can carve at that depth without a problem and do 3d carving. Our typical application is cutting sheet materials, but a good percentage of our customers cut 3D bas reliefs or even more complex 3D objects using reference points and jigs.

Most of our CNC machines have a Z travel of at least 6 inches for the smaller machines and 7 to 10 inches for our larger machines. The Fabricator Pro has a Z travel of 10 inches.

Depending on your application, you will need to consider the length of the end mill (more than the deepest depth of the 3D carving) and the stock that you will be using. If the stock plus the length of the end mill exceed the clearance with the Z axis raised to the top extent, then you will need to consider the way the table/bed of the machine is formed (maybe with a depression to take advantage of the greater need for clearance).

The greenBull has the capability of Z axis travel of up to 36 inches, but I would recommend, if milling wood, that the Z-axis not extend more than 12 inches to reduce deflection.

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Most of the CAM software on the market will have 3D profile machining operation capabilities. CAMBAM has a very nice 3D prpfiling feature. The Vectric line of software can definitely handle this as well.

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All of the pics and videos show your cncs cutting sheet materials, I'm interested in carving 3d images in plastic and hardwood slabs up to 2" thick. What machine and software would you recommend?

In our 3-Axis electronics kit, the power supply's provided are capable of both 110V-220V. You have the capability to switch between both in case you might decide to run 220v in the near future or will relocate where 110v is being used.

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Connect spindle to the board



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In the 3 Axis Electronics Combo, what is the AC input of the power supply (110v or 220v??). is it possible to specify a certain voltage when ordering?

The leadscrew length for the greenBull long Z-axis is 47 inches.

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BUILDING ONE OF YOUR GREENBULL 6X LONG AND 2.2 KILOWATT SPINDLE DOES NOT FIT. SEEMS LEAD SCREW YOU SENT WITH KIT IS SHORT 42" LOOKS LIKE IT NEEDS TO BE 5 OR 6 INCH LONGER. THIS CORRECT? WHAT THE NEEDED LENGTH FOR UNIT?

The whiteAnt will work with a 6 amp 12 volt power supply. If you add more peripherals to the machine, like heating bed, you will want higher current. Each motor draws 3.0 amps at full torque. Most of the time, only the x and y axes are moving at the same time, and the drivers are only allowing a max of 2.5 amps and they should be set for about 2.0 amps so they don't overheat (they have overheat protection and the LED will light up, so you will be fine if it does overheat, but your model may suffer). The remaining current will be enough to keep the hot end heated.

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What power supply would be adequate for the whiteAnt 3D printer?