The Mach3 USB interface board requires 24V relays externally. There are no relays on the mach3 usb board. If you use an external relay on the mach3 usb board, the relay connects to the V+ which is 24V and the output pin is the return.

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I understand what you are saying. Does your relay board work with the Mach3 USB board? If not, what relay board do you suggest to work with this usb controller?

Additional Information:
Our relay board works with our parallel breakout board. An off the shelf SSR (Solid State Relay) made for 24V should work fine.

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I have your Mach3 usb interface board and am interested in the relay board to turn plasma torch on/off. I have a different relay board that doesn't work, it needs 0/5v from output pin to trigger and the usb board doesn't put out 5 volts. Does this relay board need 5v on output or will work fine with this usb controller?

Yes, you can connect a THC, Torch Height Controller, with the Mach3 USB controller. The THC uses the inputs to determine if the z axis needs to move up or down according to the arc of the plasma torch. The THC connects its outputs to the inputs of the controller so the controller will be informed of the states of the plasma torch.

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I am interested in using the Mach3 USB interface board. I was wondering if there was a way to run a torch height controller with this board for use with a plasma cutter, and if so do you know of any THCs that will work. Thank you.

You can use a Pickit 2 programming to load firmware onto the usb driver. The USB use a Microchip pic microcontroller. If you can manage writing a program for the Pic microcontroller and have a Pickit 2 firmware uploader (programmer), you should have no problem.

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Does the USB controller come with driver installation instructions so we could create our own user interface to communicate with the motor?

The e-stop should be wired like a limit switch and can also be within the same limit switch circuit. Use one of the input pins to create the e-stop circuit.

1. Run a wire from the input pin terminal to the e-stop switch red side (one of the two terminals on the red side). The red side is NC (Normally Closed).

2. Run a wire from the other side of the red side of the e-stop switch back to the gnd terminal (or to the next switch - limit switch, NC terminal, then back to gnd, or to the next NC terminal of the next switch, do you see a recursive pattern here?).

The wire that you use for the connections should be shielded and the shielding and any other loose wire within the cable should be tied to gnd.

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Hi - I have wired in a breakout board (with relay) as per suggested wiring instructions (black toe 2X4). I want to wire in an estop but need some guidance on wiring. Also Mach3 is requesting I reset the estop, which suggests its expecting one? Can anyone help? Thanks. Miles

Take a look at these two videos that I created today on Instagram on the proper wiring of a relay to the Mach3 USB controller.

https://www.instagram.com/tv/CMYGGBtj3cq/?utm_source=ig_web_copy_link
https://www.instagram.com/tv/CMYLvq9DXVK/?utm_source=ig_web_copy_link

Don't forget to watch the initial video on the Mach3 USB outputs on the Mach3 USB product page (last video on that page):
https://www.buildyourcnc.com/item/electronicsAndMotors-electronic-component-breakout-Mach3-USB-Board

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Hi I am trying to activate Mach3 USB Controller Output Terminals to activate a plasma from a output relay. I have looked at the video and applied 24VDC to 24v and dcm and measured from 24v and out1 and get no voltage when activating torch on mach3. The output 1 or 2 does not work.

Take a look at these two videos that I created today on Instagram on the proper wiring of a relay to the Mach3 USB controller.

https://www.instagram.com/tv/CMYGGBtj3cq/?utm_source=ig_web_copy_link
https://www.instagram.com/tv/CMYLvq9DXVK/?utm_source=ig_web_copy_link

Don't forget to watch the initial video on the Mach3 USB outputs on the Mach3 USB product page (last video on that page):
https://www.buildyourcnc.com/item/electronicsAndMotors-electronic-component-breakout-Mach3-USB-Board

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Hi I am trying to activate Mach3 USB Controller Output Terminals to activate a plasma from a output relay. I have looked at the video and applied 24VDC to 24v and dcm and measured from 24v and out1 and get no voltage when activating torch on mach3. The output 1 or 2 does not work.

Take a look at these two videos that I created today on Instagram on the proper wiring of a relay to the Mach3 USB controller.

https://www.instagram.com/tv/CMYGGBtj3cq/?utm_source=ig_web_copy_link
https://www.instagram.com/tv/CMYLvq9DXVK/?utm_source=ig_web_copy_link

Don't forget to watch the initial video on the Mach3 USB outputs on the Mach3 USB product page (last video on that page):
https://www.buildyourcnc.com/item/electronicsAndMotors-electronic-component-breakout-Mach3-USB-Board

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Hi I am trying to activate Mach3 USB Controller Output Terminals to activate a plasma from a output relay. I have looked at the video and applied 24VDC to 24v and dcm and measured from 24v and out1 and get no voltage when activating torch on mach3. The output 1 or 2 does not work.

Take a look at these two videos that I created today on Instagram on the proper wiring of a relay to the Mach3 USB controller.

https://www.instagram.com/tv/CMYGGBtj3cq/?utm_source=ig_web_copy_link
https://www.instagram.com/tv/CMYLvq9DXVK/?utm_source=ig_web_copy_link

Don't forget to watch the initial video on the Mach3 USB outputs on the Mach3 USB product page (last video on that page):
https://www.buildyourcnc.com/item/electronicsAndMotors-electronic-component-breakout-Mach3-USB-Board

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Hi I am trying to activate Mach3 USB Controller Output Terminals to activate a plasma from a output relay. I have looked at the video and applied 24VDC to 24v and dcm and measured from 24v and out1 and get no voltage when activating torch on mach3. The output 1 or 2 does not work.

Take a look at these two videos that I created today on Instagram on the proper wiring of a relay to the Mach3 USB controller.

https://www.instagram.com/tv/CMYGGBtj3cq/?utm_source=ig_web_copy_link
https://www.instagram.com/tv/CMYLvq9DXVK/?utm_source=ig_web_copy_link

Don't forget to watch the initial video on the Mach3 USB outputs on the Mach3 USB product page (last video on that page):
https://www.buildyourcnc.com/item/electronicsAndMotors-electronic-component-breakout-Mach3-USB-Board

Click the link to add information to this solution:
Hi I am trying to activate Mach3 USB Controller Output Terminals to activate a plasma from a output relay. I have looked at the video and applied 24VDC to 24v and dcm and measured from 24v and out1 and get no voltage when activating torch on mach3. The output 1 or 2 does not work.

Take a look at these two videos that I created today on Instagram on the proper wiring of a relay to the Mach3 USB controller.

https://www.instagram.com/tv/CMYGGBtj3cq/?utm_source=ig_web_copy_link
https://www.instagram.com/tv/CMYLvq9DXVK/?utm_source=ig_web_copy_link

Don't forget to watch the initial video on the Mach3 USB outputs on the Mach3 USB product page (last video on that page):
https://www.buildyourcnc.com/item/electronicsAndMotors-electronic-component-breakout-Mach3-USB-Board

Click the link to add information to this solution:
Hi I am trying to activate Mach3 USB Controller Output Terminals to activate a plasma from a output relay. I have looked at the video and applied 24VDC to 24v and dcm and measured from 24v and out1 and get no voltage when activating torch on mach3. The output 1 or 2 does not work.

Take a look at these two videos that I created today on Instagram on the proper wiring of a relay to the Mach3 USB controller.

https://www.instagram.com/tv/CMYGGBtj3cq/?utm_source=ig_web_copy_link
https://www.instagram.com/tv/CMYLvq9DXVK/?utm_source=ig_web_copy_link

Don't forget to watch the initial video on the Mach3 USB outputs on the Mach3 USB product page (last video on that page):
https://www.buildyourcnc.com/item/electronicsAndMotors-electronic-component-breakout-Mach3-USB-Board

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Hi I am trying to activate Mach3 USB Controller Output Terminals to activate a plasma from a output relay. I have looked at the video and applied 24VDC to 24v and dcm and measured from 24v and out1 and get no voltage when activating torch on mach3. The output 1 or 2 does not work.

There is some variation in the outward appearance of laser power supplies due to sourcing through different vendors. However, the basic wiring requirements are the same in each case. For the unit with integrated laser controller, follow the diagram found here: https://buildyourcnc.com/blackToothLaserCutterAndEngraver.aspx#prettyPhoto/0/. The terminals on the signal side will have a 6 connection terminal block -- these are the ones labeled 5V, IN, G, P (or WP), L (or TTL-L), and H (or TTL-H). The High Power side will have 3 inputs for AC power, one high voltage lead, and one return line. Connect these as shown in the diagram as well: the return line goes on the "front" (beam exit end) terminal of the laser tube, the high voltage lead goes to the "back" terminal of the tube, the FG terminal (or G) receives the earth ground wire of the AC power cable, and the two AC terminals receive the line and neutral wires of the AC power cable (it doesn't matter in this case which wire goes to which terminal).

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I purchased the blackTooth Laser Engraver with integrated Laser Control Unit and have been following your instructions. I noticed that the laser tube power supply is different that what is shown in your instructions. Do you have any better wiring guides that I can follow for the version that I received?

You can use the Pokeys57CNC board with our 3.0 amp drivers. The Pokeys57CNC has all of the headers necessary to provide the pulse train to any common stepper driver.

Here is the link to the Pokeys57CNC interface board:
https://www.buildyourcnc.com/item/electronicsAndMotors-electronic-component-breakout-Mach4-mach3-USB-ethernet-Board

Here is the link to the 3.0 amp stepper motor driver:
https://www.buildyourcnc.com/item/electronicsAndMotors-stepper-driver-3!0a

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I'm planning on using your 425 oz motors and need help on selecting the right interface and driver boards. The PoKeys57 CNC USB card looks good but I wonder if the 2.5 amp driver boards shown with it are enough for the 3 amp motors?

The Mach3 USB interface board requires 24V relays externally. There are no relays on the mach3 usb board. If you use an external relay on the mach3 usb board, the relay connects to the V+ which is 24V and the output pin is the return.

Additional Information:
I understand what you are saying. Does your relay board work with the Mach3 USB board? If not, what relay board do you suggest to work with this usb controller?

Additional Information:
Our relay board works with our parallel breakout board. An off the shelf SSR (Solid State Relay) made for 24V should work fine.

Click the link to add information to this solution:
I bought a 'BuildyourCNC V1' relay board to go with my mach3 usb controller. I have been sent a 'Songle' relay. It's not the one in your picture and it's got different connections, for which there isn't a wiring diagram. The one I ordered says it is 5v, this one seems to be saying it's a 24v unit. Can you please explain what has happened? Thanks

The Mach3 USB interface board requires 24V relays externally. There are no relays on the mach3 usb board. If you use an external relay on the mach3 usb board, the relay connects to the V+ which is 24V and the output pin is the return.

Additional Information:
I understand what you are saying. Does your relay board work with the Mach3 USB board? If not, what relay board do you suggest to work with this usb controller?

Additional Information:
Our relay board works with our parallel breakout board. An off the shelf SSR (Solid State Relay) made for 24V should work fine.

Click the link to add information to this solution:
I bought a 'BuildyourCNC V1' relay board to go with my mach3 usb controller. I have been sent a 'Songle' relay. It's not the one in your picture and it's got different connections, for which there isn't a wiring diagram. The one I ordered says it is 5v, this one seems to be saying it's a 24v unit. Can you please explain what has happened? Thanks

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?

Yes, you can connect a THC, Torch Height Controller, with the Mach3 USB controller. The THC uses the inputs to determine if the z axis needs to move up or down according to the arc of the plasma torch. The THC connects its outputs to the inputs of the controller so the controller will be informed of the states of the plasma torch.

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I am installing a mach 3 usb controller into a wright cnc plasma table and I need instruction on wiring the thc (proma compact ) torch height controller to this board. IE will this board work to replace the parallel port board with usb controller board?

Our MAch3 USB interface boards can be located here:

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

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I am interested in the 3 axis combo USB option. I notice you endorse the Planet-CNC for use with this but will Mach3 interface well with the USB beak out Board?

The velocity is too high and/or the acceleration is too high and/or the axis is not calibrated and the motor is trying to move too fast, or trying to move too much inertia that the rated torque cannot overcome.

The recommended action would be to lower the velocity and the acceleration and do a calibration using the "set steps per unit" wizard on the settings tab of Mach3.

Once the calibration is completed and you have confirmed that the motor is moving the correct distance in reality compared to the DRO (digital readout) in Mach3, then you can increase the velocity and acceleration in the motor tuning section of Mach3 (config -> motor tuning).

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Developed an issue, when moving the y-axis it started to move, than stalled and sounded like gears grinding. Had to re-zero the y-axis. Using the USB controller with Mach3 software. What would cause this?