Any of the following power supplies will be fine for powering the Mach3 USB controller:
https://www.buildyourcnc.com/item/24v

however, the limit switches do not need high current, so the following power supply is sufficient for the task of connecting limit switches:
https://www.buildyourcnc.com/item/electronicsAndMotors-power-supply-24v-1a-dc

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What power supply do you recommend for the spindle and limit switches if I buy the USB Mach3 breakout board?

If your motor spec call for 5.5 amps, it is best to set the driver for the setting that matches that spec, or the next lowest value. This will allow the motor to run within its designed characteristics.

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For a stepper motor that requires 5.5 amps, would you recommend setting the stepper driver to 5.43 or 6 amps? Better to go lower or higher?

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?

I would suggest using the NPN proximity sensor for the Mach3 USB or the Pokeys57cnc. The proximity sensors have a top DC voltage limit of 30 volts, so it would be best to use the 24V power supply that is used to power the controller. Both controllers have a 24V power requirement, so that is convenient.

The blue wire of the proximity sensor is the GND wire and is connected to the 24V power supply's V- terminal. The brown wire is the positive wire and is connected to the V+ terminal of the 24V power supply. The black wire is the signal wire and is connected to the input terminal of the controller.

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Good evening, if I wanted to use your inductive proximity sensor's with your USB interface board what would I need besides the sensors I would be using 5 of the sensors. I have a 48V 12amp power supply. Thank you

To use the inputs and outputs on the MAch3 USB controller, you will need at least a 12 VDC power supply inte 24V terminal (V+) and the DCM terminal (V-). The common lead of the limit switch will be connected to DCM (V-) and the NO (Normally Open ) lead of the limit switch will be connected to the Input of your choice (IN1 - IN4).

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[65] So do you need a 24 volt power supply on the USB breakout board or can you use the 5 volt side ?

The breakout board receives 5v power from the USB. There is no need for an external 5v power adapter.

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4t5y

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The breakout board receives 5v power from the USB port and from my computer's USB or does it need to come from a 5v adapter?

Do you have any intention to upgrade to Mach4? If you will be staying with Mach3 for a while, then the Mach3 USB interface is fine. If you intend to change to Mach4, then I would go with the Pokeys57CNC interface.

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Hi Patrick right now I have a parallel port cnc machine that I built in 2013. I want to update my system to use a usb. Do you recommend changing my interface board to a Mach3 USB interface board or purchasing the UC 100 parallel port to USB adapter?

We generally use the USB to power the interface (breakout board). The current from the computer is sufficient to supply the breakout board.

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Breakout Board with Relay. What is the USB connection on this board for? Does this board Still require a 5v power supply?

For our parallel breakout board (https://www.buildyourcnc.com/item/electronicsAndMotors-parallel-breakout-relay#prettyPhoto/2/) the schematic will show the connections going from the BB to the drivers. The parallel breakout board uses the 25 pin parallel connection to communicate from the computer to drivers, and the USB is used to power the main-board itself, supplying 5V.

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I am wiring my breakout board and it has a USB port on it. Is the USB port there to supply the 5 volt power to it?

I can provide a paypal invoice for the difference in price. Just give me an email at customerservice@buildyourcnc.com and then I can send you the invoice.

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I can provide a paypal invoice for the difference in price. Just give me an email at customerservice@buildyourcnc.com and then I can send you the invoice.

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thats great thank you. please send it to james_moya@hotmail.com and i will be paying with my cc.

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thats great thank you. please send it to james_moya@hotmail.com and i will be paying with my cc.

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i placed an order with you on 5.27.20 for 3 stepper motors. i realize now i need the rest of the electronics (drivers, breakout board power supply etc...) i see you offer a bundle and would like to know how i can get the rest of the bundle. im looking at the $390 bundle without the motors obviously. please advise. thank you

Do you have a TL or a TH for triggering the laser? If you power the digital side of your laser power supply with 12V and tie the gnd with the PWM gnd on the pokeys57CNC controller, you may be able to use the PWM on the pokeys57CNC controller. Before you do this, I would suggest that you contact polabs support (http://support.polabs.com/) and ask them if this is possible.

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Using a Pokey57 CNC and Mach 4 can you tell me how to connect my laser. The laser has three wires.. Ground - 12V Power and PMW.

You can add a 4th driver to the 36v power supply to support a 4th axis.

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How many drivers can you hook up to your 36v power supply? Want to add a 4th axis.

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?

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 mach3 USB card requires 24V, how do I supply this?

You can find instructions for the Mach3 USB here:
https://www.buildyourcnc.com/item/electronicsAndMotors-electronic-component-breakout-Mach3-USB-Board

You will probably need to use the Mach3 USB board with Mach3. We have not tested the Mach3 usb card with Mach4.

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Whereb can I find directions on how to install the Mach3 USB board with Mach 4 software? I do not have a parallell port.

The 5V power required for the breakout board can be a simple USB male to male cable, that will connect from your computer to the board itself.
Now adding a external power supply make sure that it does not exceed a total of 5V and the standard 500 MilliAMP - 1 A.

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I have a YDH-18-5 Power Supply AC Input:100-240v 47-63Hz, Ouput: 5v - 2A and need to know if its safe to use with the Parallel Breakout Board.

Unfortunately no. The parallel port allows for digital signals to be output from 17 pins simultaneously (in parallel). Parallel port adapters tries to achieve this by receiving instructions in a two wire (USB) data signal and convert that to 17 disparate signals. This type of data transmission is too slow for the drivers of a CNC machine or router.

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can i use a usb to parallel port adapter to connect breakout board to computer? (using mach 3)

Yes, you can use a laptop if you have a controller that uses a USB, like the Mach3 USB card. If you don't have that, you can purchase that part here:
https://www.buildyourcnc.com/item/electronicsAndMotors-electronic-component-breakout-Mach3-USB-Board

If you have a controller board that connects to a 25 pin connector, modern laptops will not be able to connect to that port.

How old is your CNC computer system?

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The CNC computer system is 2013 (5 years). The built in video card went out. I will order the Mach3 USB card. Thank you.

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You're welcome

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The motherboard on the computer I bought from you went out. What would you suggest. I have a laptop, could I use it and use a Mach3 USB interface board?

The USB interface only works with momentary switches unfortunately. If you have extensive knowledge of digital electronics, you can apply a receiver that uses a microcontroller and a transmitter with another microcontroller that produces the pulsing signal with the controls that you need.

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I would like to make a handheld remote for the USB CNC Board using a joystick instead of momentary switches. Could you suggest one that will work with your board.