If you select the Settings Page and select or tick Auto Limit Override - this will allow you to back off the switch.

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limit and home switch

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Hi there, when the gantry bumps up against a limit switch and triggers it, how do you tell Mach3 to allow me to jog the motor away from the limit switch? ie: I can't press RESET because the limit is open.... how do I move it? Thx.

If you select the Settings Page and select or tick Auto Limit Override - this will allow you to back off the switch.

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limit and home switch

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When the machine hits the limits it stops but the switch is still tripped so clicking the Mach3 RESET button doesn't do anything. How am I supposed to get the machine to move off of the limit switch so I can continue working?

What interface board are you using? Typically, this will be an issue with the computer that MAch3 is installed. The only other component that may affect this would be the interface between the computer and the machine.

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mach3 freezes in the middle of a run, I don't get any message. I have press reset and then the jog buttons work. I have to reset the zero and start from the last line when the machine stopped. It happens mostly during the finishing part of the g-code file

Can you send me a link to the digitizer you are using?

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Hi my names is Minh Truong I would like to said thank you very much for your video I got the system mach3 working fine but one thing I can NOT set and config the digitizer on the board IN4 I am not sure how to setup because in the Mach3 pin 14 for digitizer Please shoe me hoe to set it up for the digitizer.

All you need is a CNC controller like the following options:

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

This controller is easy to connect using standard wire screw terminals and works with the mach3 control software.

https://www.buildyourcnc.com/item/electronicsAndMotors-electronic-component-breakout-Mach4-mach3-USB-ethernet-Board

This controller is a little bit more difficult to connect, but is a more feature-rich controller and will work with both mach3 and mach4 CNC control software titles.

Specifically, a CNC controller connects to the computer via a USB cable and connects to the motor drivers. These controllers also connect to the limit switches, spindle/router control, air/fluid/mist control, etc.

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Hello there, I am a beginner in trying to control a stepper with a pc, you can sell me a kit to control my motor from the pc. I already have a motor, driver, and power supply

Absolutely! You can have almost unlimited limit switches and home switches on this controller. It all comes down to the wiring scheme used. I recommend the home switches be on separate input terminals. For example, IN1 would have the X home switch, IN2 would have the Y home switch and, IN3 would have the Z home switch if you plan on using home switches for the Z axis.

Adding the limit switches, these can be located on any input you want, even on the IN1, 2 or 3. The wiring scheme I like to use is as follows:
- IN1 has the X home, X limit ++, and X Limit --
- IN1 has the Y home, Y limit ++, and Y Limit --
- IN1 has the Z home, Z limit ++, and Z Limit --

In most cases, the Limit -- is the same switch as the Home switch.

These can be wired as NC (Normally closed) as a serial scheme, or as NO (Normally open) as a parallel scheme.

To understand the limits and wiring schemes, check out this video:

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[575] Hi, for the manage the limit switches, is it possible to have, for example, the same limit switch for X-- and X homing? And what is the configuration in mach3? In my CNC machine they are in the same position. Thank you

Your g-code probably has the feed rate too high. You set the velocity and acceleration in your motor tuning, but g-code may be able to override these values.

Try lowering the feed rate in either your CAM program or in the g-code manually. The feedrate code has an “F” then a number after representing the velocity.

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I'm using Mach3 and I tuning the motors. As is they all seem to jog nicely, smooth and quiet. However when I make moves using gcode they bind and don't move or jerk violently when they do move. What step did I miss?

Yes, the best way to attach a relay to the output of the Mach3 USB board is to use an SSR (Solid State Relay) at the 24 Volt rating. This is the standard supply for this side of the Mach3 USB board.

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I am converting from a Parallel Port to the Mach3 USB. My limit switches can accomodate up to 5VDC and I want to Drive a Relay from one of the outputs. Will my switches work and do I need a 24VDC Relay?

For safety's sake I would recommend a new board because they are inexpensive compared to the electronics that they support. Alternatively, it's possible that the one dead pin is a simple fix, such as a bad connection or solder joint; if you feel comfortable making those repairs then it could be worthwhile to check. Finally, if you are not using all the input pins, you could continue to operate the limit switch on pin 11 and hope for the best.

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I have a breakout board and it appears that the pin 12 connection has failed: when i move my limit switches to pin 11 they work; they don't work on pin 12. Do i need a new breakout board?

The license file should be called Mach1Lic.Dat, you can copy it to a Mach3 folder on another computer and it will register the program.

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You sent my my activation code which I have jealously, guarded on my Desktop till needed, now, unfortunately I cant get it to copy from Desktop to the computer and Mach3, is it possible to get advice on this or maybe a replacement that can be put on a stick then plugged into my Mach3 computer. This is how I have tried but when I open the folder it is empty. Thanks for your patience with me.

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?

If you select the Settings Page and select or tick Auto Limit Override - this will allow you to back off the switch.

Additional Information:
limit and home switch

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Using Mach3 and the USB Controller, In initializing the 'Ref All Home' the machine goes thru the procedure of zeroing out 'Z' than move to zero out 'y', but when it move to 'x' it just stops when it hits the switch instead of zeroing out?

The 12V power supply has 3 terminals for AC in: N, L and earth ground. The output of the 12V power supply has 2 DC + and - terminals. Cut the connectors off of the ends of the fan and pump wires. Strip the red and black wires of both units. The fan will connect to the 12V power supply red to the + and black to the -. The pump will connect in the same way, but the white is not connected.

If you have a pump that has a grey and black wire on the large connector, the grey is the 12VDC V+ wire and the black wire goes to the V-. The extra wire does not need to be connected.

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I bought a gantry mounted spindle water cooler kit. I cut off the plug terminal on the end. There are three wires and it is labeled as a 12 V DC motor. How do I wire it to the power supply? No combination of connections seems to work. the fan runs fine. it

The 12V power supply has 3 terminals for AC in: N, L and earth ground. The output of the 12V power supply has 2 DC + and - terminals. Cut the connectors off of the ends of the fan and pump wires. Strip the red and black wires of both units. The fan will connect to the 12V power supply red to the + and black to the -. The pump will connect in the same way, but the white is not connected.

If you have a pump that has a grey and black wire on the large connector, the grey is the 12VDC V+ wire and the black wire goes to the V-. The extra wire does not need to be connected.

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I bought a gantry mounted spindle water cooler kit. I cut off the plug terminal on the end. There are three wires and it is labeled as a 12 V DC motor. How do I wire it to the power supply? No combination of connections seems to work. the fan runs fine. it

Do both motors, the main and slave work correctly when using the arrow keys?

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How do you slave an axis with mach3 and pokeys57cnc? My slave axis is only going one direction as a slave and goes correctly in both directions when I direct it with an xbox controller.

Connecting the limit switches on the redLeaf use the input pins on the parallel breakout board. Here is a link to the wiring diagram for that parallel breakout board.

https://buildyourcnc.com/item/electronicsAndMotors-parallel-breakout-relay#prettyPhoto/2/

The connection is simple. Just create a circuit from ground to the pin. When the pin is engaged, the circuit is closed (using normally open on the switch). Use mach3's autoset to automatically set the pin for the limit or home setting.

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Do you guys have any videos showing how to connect limit switches to a redleaf? If not, could you please make one? I looked at the diagrams on the limit switch page but I don't understand them.

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?

Not sure what you mean by the statement "I don't know when you answer". Please explain. I answer all of the incoming emails until my inbox is completely empty and all phone calls to the company go straight to my cell phone and I answer all of the calls, and if I don't answer, I call back immediately.


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I just searched my email and found no emails with your email address associated with the email listed with this question. I cannot answer questions if no correspondence was provided by you.

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Please send an email, I am giving up on buying a machine from you because I don't know when you answer. I was asking about getting just the working parts and rails sent to Fiji. You sent an answer and some questions, but I have no way of knowing if you responded again.

I hope to have that video up within the next couple of weeks.

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Hey guys and Happy New Year! I was wondering how close you were to releasing part 2 of https://youtu.be/JWACS6dMMQ0 detailing connections from a purchased redleaf system to your latest VFI as well as stop button and limit switch wiring? Cheers.