Try slowing your feedrate down and increasing spindle RPMs. End-mills will leave a poor finish if you go too fast. Make sure your cutting depth isn't too much. Maybe the endmill or cutter is blunt? Could it be the feed direction of the cutter? Some materials need to be fed in a certain direction.

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MOTOR GOING TWO DIRECTION WHEN JUST PUSH UP. IT WILL GO DOWN AND THEN GOES AGAIN UP WITH THE SAME BUTTON.

If your axis shutters and will not move unless moved by another force, that sounds like your acceleration is set too high. Lower the acceleration until it works well, then lower it a bit more to have a margin of safety.

IF that didn't work, try swapping the X and Y drivers. That way you will pinpoint if the issue is the driver. If the proplem persists, then there may be an issue with the motor itself.

The X and Y drivers can be easily swapped by swapping only the motor wires.

- Remove the x-axis motor wires from the X driver.
- Remove the Y motor wires from the Y driver.
- Insert the X motor wires into the Y driver.
- Insert the Y motor wires into the X driver.

Now the Y-axis will move the gantry. Test the Gantry movement by moving the Y axis using the up and down arrow keys (mach3).

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X AXIS STEPPER MOTOR STALLS AND SHUTTERS WHEN COMING FROM A STAND STILL WON'T MOVE WITHOUT PUSH BY HAND. I TOOK THE CHAINS OFF SPUN FINE WITH OUT LOAD. HAVE CHAIN HOOKED UP CAN MACHINE BACK FORTH HAND, NO HANG UPS OR ANYTHING, BUT TRY TO IT DOESN'T JUST SPINS OUT. ANY SUGGESTIONS?

Is the signal gnd on the laser power supply connected to a gnd on the breakout board? Do you hear a high pitched sound, like a TV set with an antenna getting interference, but with a high pitch?

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OUR FIRST ATTEMPTS WERE WITH THE PLANET-CNC SOFTWARE, GOING THROUGH USB BOB. NO PROBLEM GETTING X & Y AXIS TO MOVE BUT UNABLE GET ANY ACTIVITY ON Z AXIS. WE THEN INSTALLED MANUAL SWITCH BETWEEN 5V AND TL, JOY. DISCONNECTED BOB FROM TH, MOVED OVER TH TL STILL

Make sure that the spindle motor output pin is not interfering with the signal. Go to config -> ports and pins -> motor outputs, at the bottom of the table, there will be a line for spindle. Make sure that spindle line item is disabled.

Additional Information:
I disabled the spindle port and I am still only able to activate port 3 and get 24v and even there when I enter m5 the voltage bounces all over the place. The other outputs read all over the place whether they have been designated as the spindle on the spindle settings tab

Additional Information:
I tried wiring a relay to each of the outputs and only out3 was able to activate the relay

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[575] I connected this to 24v power supply and only out3 will show 24v when activated the other 3 read 300+v whether activated or not

Have you tried entering a command in the MDI for that turn axis? What happens when you do?

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[575] Hello! When I use turn software then everything works with mpeg mode. When I wanna use step mode and change axis positions with keyboard then x,z positions changes randomly.How I can fix it ?

The output current for the Mach3 USB Interface Board is 50mA. These outputs are generally not designed to handle heavy loads like Spindle Governor Relays (SGRs).

If your SGR requires a hefty current. Attempting to directly switch it using just the Mach3 USB Interface Board would not be a good idea. In that case, using your existing C36 rev1.1 board as an intermediary is the way to go. That board can handle higher currents and will act as a buffer, ensuring that the Mach3 USB Interface Board doesn't get overwhelmed.

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[575] How much current can the outputs handle? I want to know if I can directly switch my SGR or if I have to go through the existing C36 rev1.1 board first.

You will want to connect the homing switches (which may also serve as your near limit switches) to different input terminals. It's ok to add more limit switches with the home switches, but each home should be on independent inputs. For example, connect home X and any other limit switch to IN1, connect home Y and any other limit switch to IN2, and so on. This will allow you to properly use the "ref all home" button in Mach3.

Additional Information:


Additional Information:
In the instructions (diagram 1) you show all the home switches connected in parallel? But here you say they need to each have their own inputs. "You will want to connect the homing switches (which may also serve as your near limit switches) to different input terminals." I dont see how the second and third axis can go home if the first axis has already closed the parallel circuit unless they back off a bit until the switch opens up again before the next axis goes to home? My machine has no limit switches so I assume they are home switches.

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[575] I have finally got my limit switches wired and working - thank you. Can they also used as homing switches and if so it it just a question of looping the two inputs on the board i.e. the limit and home terminals IN2 to IN3

Did you try using the MDI and inputting a value for the turn to see if that works?

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[575] When I run turn software then everything works with mpeg mode. When I use step mode and wanna change x and z axis with keyboard then value change randomly. In one moment it change 0,095 and next time 0,1 and so on.

Because the USB board is powered by USB (+5VDC) from your PC. Your inputs (eg. limit switches) require up to +36VDC to operate properly.

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[575] Why is a second PSU necessary for the limit switch and e-stop ?

Yes Mach3 is a great program. Our 3 axis is 6'X12'X3'using all BYCNC components (incl. redsprout)

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I JUST BOUGHT THE 3 AXIS W/HEAVY GANTRY, WILL MACH 4 RUN WELL WITH THIS, AND HOW LARGE CAN GO CUT AREA

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.

Yes, you can use a conductive metal to serve as a zeroing block for the Z axis. All you need to do is connect the block (conductive metal) to one of the 4 inputs on the controller. The end mill must be connected to the DCM terminal (the GND of the 24V power supply) of the controller. In the inputs dialog box (config-ports and pins-inputs). Under the probe line, enter port 3 and the pin used for the block.

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[575] Hi can I use a zeroing block with mock three interface board and do you have one I can purchase and directions on how to set up

with parallel port controllers, you have the ability to jog using two axes at the same time, but with USB controllers, this is not possible.

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[575] Hi, I recently purchased this board and everything seems to be fine! But I am not being able to jog two axis at same time as I used to do on my older board. Did I do something wrong?

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.

Additional Information:
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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[575] Can you tell me where to find a script (for Auto Tool Zero button) to zero Z axis from a touch plate?

No, you should not have received two parallel breakout boards in your CNC kit. You can return the extra item using standard shipping with COD. Our apologies for the confusion and the inconvenience.

I will answer the other question as another FAQ. Please check the Customer Service page to see the answer to that question.

If you have difficulty finding the answer, here is a link:
https://www.buildyourcnc.com/FAQ/13636

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I HAVE A 2000 WK 11–3 Z LIMIT SWITCHES GOING TO C10R10 BREAKOUT BOARD . CAN ALSO USE THEM AS MY HOME POSITION WELL. NEED THE WIRING CONFIGURATION

Make sure to wire the limit as normally open.

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[575] I had limit switches working and on input 2. Now looking at Mach 3 diagnostics, Input 2 is continuously on and triggers limit stop. I removed all input 2 so the machine can run. Rebooted all. Anyway to reset Input on card?

Yes, the Mach3 USB controller will work with the latest Windows version and in 64-bit mode. The 32-bit mode is only relevant for using the parallel port driver if you are using a parallel port breakout board. Since this controller is connected via a USB cable, the 64-bit state will work fine.

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[575] I have a 64 bit Windows 11 laptop. Will this interface board work with this? If not is there an option you can suggest.

You have the ability to designate the 4th axis, commonly known as the A-axis, for rotary indexing operations when using a Mach3 USB controller.

To achieve this in Mach3, you'll need to:

Open the Mach3 software.
Navigate to "Config" and then to "Ports and Pins."
Go to the "Motor Outputs" tab.
Enable the A-axis and assign the respective Step and Direction pins.
Save your settings and exit the "Ports and Pins" dialog.
To calibrate the A-axis, go to "Settings" and use the "Set Steps Per Unit" option.

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[575] Does this board support indexing on mach3 turn? Planning to use it on a lathe and will do threading jobs

The Mach3 USB controller can only output pulses and direction signals (5V logic signals).

To connect your Mach3 USB controller RNR controller with a servo AC that has a 24V open collector, you will need to use a level shifter circuit to convert the 5V pulses from the controller to 24V pulses that the servo can accept.

One way to do this is to use a simple transistor-based level shifter circuit. Here are the steps to connect your Mach3 USB controller RNR controller with a servo AC using a level shifter circuit:

Connect the 5V output signals from the Mach3 USB controller RNR controller to the base of the NPN transistor in the level shifter circuit.

Connect the collector of the NPN transistor to the 24V power supply.

Connect the open collector output of the servo AC to the emitter of the NPN transistor.

Finally, connect the ground of the Mach3 USB controller RNR controller and the servo AC to the ground of the 24V power supply.

The level shifter circuit will act as a switch, allowing the 24V power to flow to the servo AC when the 5V signal from the controller is present.

Remember that the MAch3 USB controller only outputs pulses for steps per rotation of a motor. If the servo requires a different method of motor rotation, this will not work.

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[575] Hello. I have rnr controller. My problem is connection with servo ac. My servopack have logic Voltage 24v open collector. How Connect and what i need to Connect rnr with servo if rnr have 5v logic. Thx