"Soft limits are used to decelerate machine to stop before machine is stopped hard way at limit switch or before it crashes. I recommend "Soft Limits Decelerate" and "Soft Limits Strict" settings are also checked. Sometimes we need to disable soft limits and there is a command for this in menu "Machine/Soft Limits". When soft limit is triggered position display will be yellow."

Are the soft limits "grayed out"?
Here is a link to a very useful forum post from the Planet-CNC crew:
http://www.planet-cnc.com/faq/machine_setup/



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i keep getting scratches when engraving pictures on dog tags

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Using USB Controller Board with Planet-CNC software. The S/W recognizes limit switches but not soft limits. Help?

To home the z-axis using a plate:
- Connect the end mill using a large clamping device like an alligator clip with a wire connected to GND.

- Connect the plate (solder a wire to the plate) to one of the input pins.

- You can use the autoset to setup that pin in Mach3 simply by touching the two together once connected to the pin and GND.

Alternatively, the end mill can be connected to the pin and the plate connected to GND as long as there becomes a complete circuit when the end mill touches the plate.

To setup homing for the Planet-CNC homing and limits, go to the Planet-CNC Machine setup page which explains the process step by step: http://www.planet-cnc.com/faq/machine_setup/

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How do I get homing on z to work with planet cnc software using build your own usb board. I have gone to planet website and followed the instructions provided but my software will not allow entries in the required fields they are grayed out is it because I am not using planet-cnc's board, I have used this method for years with Mach3 and would like to use it with the usb board and software.

Answer:
Just received information from the developer. The instructions on how to use a plate for z-axis homing (moveable sensor) can be found here:

http://www.planet-cnc.com/faq/moveable_sensor/

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How do I get Homing on Z to work with Plate and Ground using Buildyourcnc usb board all the entries for the sensor in planet-cnc are grayed out. I am using input z- and I purchased the software

The USB interfaces (The board shown at the link: https://buildyourcnc.com/item/electronicsAndMotors-electronic-component-USB-Controller-Breakout) that we well is already updated with the firmware, and tested with the planet-cnc software. Simply install the planet-cnc software and plug in the USB interface and the software will communicate with the board.

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Windows 10 was not allowing the planet cnc software to install the proper drivers. Following the windows 8 reccomendations listed on the usb break out board page got the planet cnc and usb break out board communicating.

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How do i get the USB break out board to communicate with the exceptional Planet-CNC USB software?

Planet-cnc is the best place to get information on setting up the software for the USB interface. We will test the z-axis plate homing method on Monday to be able to provide a more thorough explanation.

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Has anyone at BuildYourCnc ever tested homeing the z axis using a plate and ground clip using their BuildYourCnc usb breakout Board and a registered copy of Planet-Cnc software. If the answer is yes could they provide instruction from BuildYourCnc and not Planet-Cnc as their instruction does not work with BuildYourCnc USB breakout Board.

Mach3 is not compatible with the USB breakout board, so you need Planet CNC in its place.

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I am confused by this same issue. I am using the Mach3 USB interface board with Mach3 and it works fine. In fact a video of it is on this very website. (link below)

Is the Mach3 USB interface board the same thing as Planet-CNC USB board?
It has been stated on this FAQ that it cannot be used with Mach3 and can only be used with Planet CNC USB software.

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

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In a Windows configuration, Using the USB breakout board, is the Planet-CNC software used in conjunction with Mach3 or in place of it?

To use a touch plate on any controller, all you need is a conductive flat material with a known thickness and some wire and alligator clips. Solder a wire to the touch plate and connect the other end of the wire to the free input terminal of the controller. Connect a wire with an alligator clip to the ground of the controller (on the Mach3 USB controller, this ground is the DCM terminal, or the digital gnd on the 24VDC power supply). Connect the alligator clip to the end mill.

You can either use a script to serve as the probe, or you can use the ref all home button and setup the touch plate as a home switch.

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I there a tutorial on hooking up a Z axis zero touch plate to the usb controller?

The USB controller will only work with the Planet-CNC software. This software is well made and will provide great functionality. The planet-cnc software delivers instructions to the microcontroller on the board and the microcontroller will send out the pulse trains needed to move the machine correctly.

There are two main alternatives if you want to use the mach3 software:
First, get a parallel port card and add it to your computer and get a parallel breakout board. If you have a laptop/notebook computer, this will not be possible.
Second, if you have a laptop, or really want to use the USB as the main interface for controlling the machine, you will need to get the smoothstepper board which works with mach3. The price combination is much higher than the USB controller with planet-cnc, but will work with Mach3.

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The planet cnc controller can be prone to electrical interference and has been known to cause such problems. In the first instance try to use a quality double sheilded USB cable, hopefully this will fix your problem. Alternatively you may need to sheild your limit switch, estop and or motor cabling. My pick is that a quality USB cable will fix it though, worked for me.

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I have your USB controller sitting here and want to control it with something other than PlanetCNC control software?

The Mach3 usb controller/interface has instructions and videos on this page:
https://www.buildyourcnc.com/item/electronicsAndMotors-electronic-component-breakout-Mach3-USB-Board

There is a 5 step process on that page to install the plug-in and the configuration xml file that is necessary for the proper functioning of the controller.

The videos on that page also demonstrate in detail how to install the software, plug-ins, xml file and wiring and testing most of the features of the Mach3 USB interface.

Hope this helps.

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good day, does this controller board support the M11/M10 command set.

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How do you install the software for the Mach3 USB controller?

To implement a electronics combo to run you Proxxon MF70, you will need to find the correct drive components (ACME screw, linear rail, etc) and look into any specific modifications needed to your rig.
I would recommend the USB 3 Axis Large Motors Electronics w/ USB Interface Board.
Since the machine is metal, our larger motors would be highly recommended.

We have not done this conversion, through research is recommended.

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Hi I have a Proxxon MF70, I want to add 3axis stepper with controller and software by USB. Can you suggest a kit for me? Thanks.

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?

Dealing with our USB BoB, the potentiometer that will be used in the key jog, is a 5V, 5k - 10k Ohm potentiometer.

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I am building a cnc mill using your USB controller and i would like to know what is the specification of potentiometer used for adjusting manual axis jog speed

It seems to be getting some kind of interference or a short within the wiring or communication, try jogging the motors in the software without anything wired to the board. Then add one motor at a time to see if there is a short within your wiring or a faulty driver/motor.
If the USB breakout board continues to move the x-axis with no motors or driver wired to it, please email customerservice@buildyourcnc.com for a replacement or further troubleshooting.

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I AM USING USB BREAKOUT BOARD WITH PLANET-CNC SOFTWARE. WHEN ENABLE JOGGING KEYBOARD X AXIS STARTS TO MOVE BY ITSELF (WHETHER CONNECTED OF NOT). PRESS STOP - IT STOPS FOR A MOMENT AND THEN AGAIN. WHAT COULD THAT BE? TRIED REINSTALL SOFTWARE DID NOT HELP.

The usb controller will only work with the planet-cnc software which is software that will work in Windows.

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Does USB Controller Breakout support Linux Ubuntu and does the software support command line interface (to control it with python scripts for example)

The usb controller will only work with the planet-cnc software which is software that will work in Windows.

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Does USB Controller Breakout support Linux Ubuntu and does the software support command line interface (to control it with python scripts for example)

The motor that is attached to the 4th axis is wired as follows:

The motor should have red, green yellow and blue wires coming form the motor. The red and green are paired as one coil and the yellow and blue is paired as the other coil. You can wire the motor to a 3.0 amp driver with red to A+, green to A-, Yellow to B+ and Blue to B-

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HOW DO I WIRE THE 4TH AXIS THAT YOU SELL. I HAVE MACH3 SOFTWARE. NO INSTRUCTIONS ON YOUR SITE

It seems to be getting some kind of interference or a short within the wiring or communication, try jogging the motors in the software without anything wired to the board. Then add one motor at a time to see if there is a short within your wiring or a faulty driver/motor.
If the USB breakout board continues to move the x-axis with no motors or driver wired to it, please email customerservice@buildyourcnc.com for a replacement or further troubleshooting.

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I am using USB breakout board with planet-cnc software. When I enable jogging keyboard x axis starts to move by itself (whether keyboard connected of not). When I press stop - it stops for a moment and then starts to move again. What could that be? Tried to reinstall software - did not help.

"Semi automatic" measuring is possible.
1. Place movable tool sensor (touch plate) on material.
2. Click "Measure Offset Z". Tool will move down, touch sensor and move up.
3. "Measure Offset Z" button is still down.
4. Click "Offset - Current Z" - this will set offset Z
5. Click "Measure Offset Z" again to release it and restore normal mode."

The connections to the USB interface is as follows:
- The spindle is connected to the gnd terminal (which is also connected to the end mill). Alternatively, you can connect the gnd directly to the end mill is access is permitted.
- The touch plate (movable tool sensor) is connected to the Z-- terminal.

What will happen: When the end mill (gnd) is in contact with the touch plate (Z--), there will be a connection from gnd to the Z-- triggering this Z-- action and the software will recognize the connection (like a button press, or a limit switch triggering).

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How do I connect a Z-Axis touch plate to the Planet-CNC USB interface?

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.

To use a touch plate on any controller, all you need is a conductive flat material with a known thickness and some wire and alligator clips. Solder a wire to the touch plate and connect the other end of the wire to the free input terminal of the controller. Connect a wire with an alligator clip to the ground of the controller (on the Mach3 USB controller, this ground is the DCM terminal, or the digital gnd on the 24VDC power supply). Connect the alligator clip to the end mill.

You can either use a script to serve as the probe, or you can use the ref all home button and setup the touch plate as a home switch.

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I connect wire to cmd- and to in2. I cant getbit to work, what arecthe corresponding ports and pins to usenin mach3? Please help.

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Hello, Can I hook up a Z axis touch plate to the usb controller?