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### Question #: 816

Question: how can I convert my orinary drill press to a servo drill press?

Current Solution

There may be many ways to do this. My recommendation would be is to add an encoder to the shaft of the existing motor and connect that to a servo controller so you have closed loop control. This way, you have the torque from the pulleys in the top of the drill press.

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### Other Possible Solutions to this Question

• how can I convert the whiteAnt from the 3D printer mode to the CNC milling mode?

To convert the whiteAnt to a CNC machine, you will want to lower the upper structure to the lowest position to create the most rigidity overall. You will see that there are many holes below the sides of the upper structure that are evenly spaced. This is so you can adjust this lower. You will also want to fasten the lower sides to a substrate (piece of wood, or something) with l-brackets or something that has a bit of adjustment capability. This will keep the sides more rigid as well. Use a Dremel for the spindle. If you want to use a another spindle, let me know and we can product a mount for that spindle since the Dremel has poor runout (TIR). This is important if you are wanting really precise milling.

how can I convert the whiteAnt from the 3D printer mode to the CNC milling mode?

• How can I convert RPM to hertz Hz?

1 RPM = 1/60 Hz
1 RPM = 0.01666666 Hz.

So, say you wanted to know the Hz for 12,000 RPM

(12,000 Revolutions / Minute) / 60 = 200 Hz
or
12,000 RPM x 0.016666 = 200 Hz

If you needed to determine the RPM from the Hz, then

RPM = Hz x 60

So, say you wanted to know what RPM is for 400 Hz:

60 x 400 Hz = 24,000

How can I convert RPM to hertz Hz?

• How can I convert from Xylotex to yours, four axis with limit switches. Have parallel PC and steppers on machine.

Sure, the USB interface has a place for 4 axes of limit switches.

Each axis can have two limit switches: one for the ++ (positive) end and one for the -- (negative) end. The positive end would be the limit switch at the end of the machine that, say the machine has a 4'x8' area, reaches a bit after the 8 foot mark. The negative end would be the limit switch behind the 0 foot location behind the origin. If the origin is in the middle, the negative would be at a little more than the -4 foot end and the positive would be at a bit more than the +4 foot end. Note that you can have more than one switch on each pin where the NC is connected in serial fashion and the NO is connected in parallel fashion (this can be seen on the diagram in the multiple limits switch section). The software configurations for the limits switches are under File -> Settings -> Limit.

A typical limit switch has three connections on it. These connections consist of COM (common), NC (normally closed) and NO (normally open). The COM would generally go to GND and the NC or the NO would go to the pin. If the NC is used, then the the switch is constantly connected until the switch is pushed (engaged) then the connection from the pin to gnd is broken (open). Use the settings in software to set whether in NC or NO configuration.

Let me know if this information was helpful (or not) by adding information to this question. Thanks.

User response:
Thank you very much for this helpful information. I'm still a little fuzzy on how the 6 limit switches physically connect to each other and to the USB breakout board. You've stated one switch (home) goes to positive and another switch (limit) goes to negative. Are all the GND prongs from all 6 switches connected to each other and going to GND on the breakout board, or no? And the NC prongs, how exactly are they connected to each other? And to the board? There has to be a diagram somewhere shows this visually, no? I don't know how to wire the switches in series or in parallel. I have already physically installed all the switches on the machine and ran the wires to where the board is. Now I just need to know where to plug these wires into the board. Also, taking into consideration that I'm using the Planet CNC software, the only settings I have pertaining to limit switches is "Enable/Disable" for each axis, and the actual limit for each axis. Nothing about NC or NO. Is that only in Mach3?
Thank you.

buildyourcnc response:
On the USB interface, the COM on the switch connects to GND and the NC or NO connects to the input pin (i.e. x++, y--, etc.)

Limit switch configuration is rather difficult to understand, especially with series and parallel. You can think of series as a single wire going from GND to the axis letter input terminal (i.e. X++ or X--). If the wire is broken, then the circuit is open (or the switch is engaged in a normally closed scenario). Normally closed is like an actual wire, and when engaged, the switch "opens" (breaks the wire). This is why we recommend in some systems that you can put many switches in series on a single pin. When one of the switches is engaged (breaking the connection) then the entire circuit of switches is broken and the machine stops.

In a parallel scenario, the state of the circuit is always broken until the one of the switches is engaged and the circuit is then closed or connected. The topology looks like a ladder. All the switches connect to both sides of the ladder and the switches are like the runs of the ladder (the horizontal bars that the feet are placed while climbing). Imagine all of the switches broken in this scenario (normally open). It would be like the ladder could be split in two, but if one of the ladder runs (switches) is closed by engaging it, then that run would connect both sides of the ladder and the two sides of the ladder would have a connection.

There is a diagram on the USB page of the various limit switch configurations. If you need more information (visual and/or otherwise), please let us know and we will immediately add that information to benefit everyone.

How can I convert from Xylotex to yours, four axis with limit switches. Have parallel PC and steppers on machine.

• how do I connect my spindle to mach3 so mach3 can control it

It is not necessary to connect the spindle VFD (Variable Frequency Drive also called an Inverter) to the computer or CNC motion electronics. The VFD can be controlled independently using the control panel on the VFD. The control panel has the ability to control all aspects of the spindle including Speed, Torque, limits, etc. However, you can connect the VFD to the computer so the CNC control program can control the spindle during the CNC Machine operation. You will need to connect the VFD to the computer via a serial conection (in this case, it is the RS-485 protocol).

The following are instructions on how to connect the VFD to Mach3 via this RS-485 serial connection.

The first thing you will need is the dynamic link library to pair with mach3 called the Huanyang VFD Mach3 PlugIn. You can find this file at the mach3 support forum here: http://www.machsupport.com/forum/index.php/topic,14182.0.html

Follow the pdf that comes with the library file, but here is a synopsis of what you need to do (I also added a lot more information that may be useful during this process as the manual does not cover the main connections that need to be done):

You will need to program your VFD so that it knows how to communicate with mach3 and the computer (go into the programming mode of the VFD and change these parameters):
- PD001 - value 2 - Enables with communication aspect of the VFD
- PD002 - value 2 - Enables frequency control from the communcations port
- PD163 - value 1 - VFD address
- PD164 - value 1 - Baud rate of 9600 (speed of the communication)
- PD165 - value 3 - 8N1 RTU - 8 bits (that's the size of the word that gets communicated), N (No parity or no error checking) and 1 (1 stop bit)

Copy the dll file to the PlugIns folder of mach3.

Connect the RX and TX lines to your computer. There are a couple ways you can do this, but the recommended way would be to use an FTDI USB device which converts a USB to a serial com port. The device will have Rx and Tx connectors to connect to the VFD terminals with the same labels. This method is recommended since serial ports are not as common in computers these days.

Next, you will need to configure mach3 to use the plugin library. Start mach3 and click on Menu -> config ->Config Plugins. Enable the new plugin by clicking on the red cross on the left column next to the plug in. Restart mach3 after doing this.

No you need to configure mach3 to use the HuanyangVFD plugin. Go to the ports & pins configuration and select the spindle setup tab. Make sure that the Disable Spindle Relays checkbox is unchecked. We don't want mach3 to output a signal for a relay since the spindle will start up and turn off within the VFD and not from an external relay.

Next, go to the HuanyangVFD settings by clicking on Menu -> plugin control -> HuanyangVFD. Set the parameters to the same settings you put into the VFD programming. The com port will be shown as new hardward when you plug in the USB FTDI device. A little bubble will be displayed at the bottom right where it will notify you that a new device is being installed (be patient while windows assigns a com port). Alternatively, you can use the windows device manager to see which port was set for the new USB FTDI device). You may need to restart mach3 several times until you get the correct information displayed in the PD001 and PD002 fields. When the com port is correct and the other parameters, like baud and VFD address is the same as you entered in the programming, then the PD001 and PD002 will show the number 2, otherwise, a 99 will appear which means that communication was not successful.

You can now control the on/off and RPM of the spindle using the RS485 communication between mach3 and the VFD.

The question was how to connect the spindle to the redfy. I did not receive a VFD.
I have the redFly system and a 2.2kW Spindle - 110V how do i connect the spindle?

Hi, how is this setup in mach4?

how do I connect my spindle to mach3 so mach3 can control it

• How can I connect my pc to my motor drivers and motors?

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.

How can I connect my pc to my motor drivers and motors?

• Can you supply a "KIT" to convert my 4060Z CNC to a Laser Cutter? What is the difference capabilities between the 40Watt and 80Watt?

We can supply all of the laser components, but you will need to determine how to mount the components.

Alternatively, you can purchase our greenBull machine that has the laser/spindle combo head. You can see the laser/spindle head here: https://www.buildyourcnc.com/item/cnc-machine-laser-spindle-combo-head

Can you supply a "KIT" to convert my 4060Z CNC to a Laser Cutter? What is the difference capabilities between the 40Watt and 80Watt?

• Can you supply a "KIT" to convert my 4060Z CNC to a Laser Cutter? What is the difference capabilities between the 40Watt and 80Watt?

We can supply all of the laser components, but you will need to determine how to mount the components.

Alternatively, you can purchase our greenBull machine that has the laser/spindle combo head. You can see the laser/spindle head here: https://www.buildyourcnc.com/item/cnc-machine-laser-spindle-combo-head

Can you supply a "KIT" to convert my 4060Z CNC to a Laser Cutter? What is the difference capabilities between the 40Watt and 80Watt?

• I HAVE BLACKTOE 4.1 WITH PORTER CABLE 890 ROUTER.TO CONVERT TO SPINDLE(2.2KW) CAN JUST CHANGE THE MOUNT?

If you would like to use a spindle rather than a router on your existing CNC, we will send you another set of components that will allow the spindle to be mounted properly which includes the z-axis rails, rail support, spindle mounts and the dust shoe components. You can find this item to purchase here: https://www.buildyourcnc.com/category/z-axis

I HAVE BLACKTOE 4.1 WITH PORTER CABLE 890 ROUTER.TO CONVERT TO SPINDLE(2.2KW) CAN JUST CHANGE THE MOUNT?

• I have blacktoe 4.1 with porter cable 890 router.To convert to spindle(2.2kw) can I just change the mount?

If you would like to use a spindle rather than a router on your existing CNC, we will send you another set of components that will allow the spindle to be mounted properly which includes the z-axis rails, rail support, spindle mounts and the dust shoe components. You can find this item to purchase here: https://www.buildyourcnc.com/category/z-axis

I have blacktoe 4.1 with porter cable 890 router.To convert to spindle(2.2kw) can I just change the mount?

• How can I determine which wires on my stepper motor bellong to A+ A- B+ or B-?

You can use a multimeter to determine the wires of the same coil (i.e A+ and A- belong to he same coil). The wires that are connected on the same coil will have relatively low resistance. A wire from one coil to another coil with have no continuity since the two coils are not touching each other.

How can I determine which wires on my stepper motor bellong to A+ A- B+ or B-?

• How can I to connect a signal to turn on a mist in a USB board? Thank you

You will need a 24V relay to control mist using the Mach3 USB breakout board. The wiring diagram (link below) will show one of the output terminals (O1, O2, O3 or O4) connected to one of the leads of the relay. The other lead is connected to the V+ to complete the circuit. The other part of the relay is used as a switch to control the mist on/off.

Wiring diagram: https://www.buildyourcnc.com/Documents/Electric%20Wiring%20Diagram.pdf

Mach3 USB Breakout Board for CNC Routers: https://buildyourcnc.com/item/electronicsAndMotors-electronic-component-breakout-Mach3-USB-Board

How can I to connect a signal to turn on a mist in a USB board? Thank you

• How can I control my VFD using Mach4 cnc control software?

The best way to determine how to control your VFD using Mach4 is to read the MAch4 manual found here:

You will find that there a a few ways to control the spindle/VFD on your CNC machine or CNC Router.
- The first and easiest is to have your VFD's power controlled by a relay. This will allow your spindle to have on/off control through Mach4 with an output pin.
- The second is to have a controller output a DAC voltage between 0-10 volts to control speed on the VFD/Spindle. There is a termial on the VFD to receive this signal line. The controller will also have an output that outputs a high or low and that can control the on/off on the VFD.
- The third, and more difficult of the three methods is to use a USB to Serial adapter (USB to USART or RS-485). The Computer plugs into the adapter using a USB cable and the adapter uses the RX/TX to connect to the VFD's terminals for communication. This will provide a great amount of control. Mach4 will need a plug-in to make this option work.

How can I control my VFD using Mach4 cnc control software?

• my laser power supply has quit again how can I contact you?

I'm very sorry to hear that your laser power is not working. Did you check to see if the problem is actually with the laser tube? The laser tube has a finite number of hours of running time and this may be exhausted. We can send another power supply right away once we confirm that the problem is the power supply.

At the bottom of the page, you will see a link "Contact Us". The email link for customer service is there. http://www.buildyourcnc.com/contactus.aspx. Contact us and we will assist you with the power supply and/or send you a new one to replace yours.

my laser power supply has quit again how can I contact you?

• I want to fix the tramming issue, how can I measure this

You can measure the tramming angle by putting a long L shaped rod that will fit into the spindle's collet and affix a piece that will tough the table to the other end of the rod. Rotate the rod to determine how far out you are. The longer the rod, the more accurate the measurement will be.

I want to fix the tramming issue, how can I measure this

• I have motors and drivers, how can I control them from my pc?

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.

I have motors and drivers, how can I control them from my pc?

• I currently own a blacktoe router cnc.Want to convert to spindle.Do I use the same Z axis mount?

You will not be able to use a router mount for a spindle. You will need to get a spindle mount for your Z axis.

I currently own a blacktoe router cnc.Want to convert to spindle.Do I use the same Z axis mount?

• I need my spindle and cnc electronics repaired. How can I fix it?

Yes, you can send your electronics to us for repair, or retrofit to work with either Mach3, Mach4 or LinuxCNC. You can send us an email at customerService@buildyourcnc.com to set up your appointment.

Some of the types of CNC electronics we will consider.

- We will work on electronics from other manufacturers as long as you are ok with the Mach3, Mach4 or LinuxCNC control software for your CNC machine or CNC router.

- We will repair or retrofit used CNC electronics.

- Some customers find that electronics are overwhelming to put together so we will finish these electronics wiring and assembly for you.

The cost for these includes labor cost for the time it takes to finish the CNC electronics repair or retrofit and for any parts that need to be replaced or added.

Here is an example of CNC electronics that we worked on for a customer:

This is the type of response that you can expect to receive after the CNC electronics are repaired or retrofitted to work under Mach3, Mach4 or LinuxCNC. You can see the entire work, which also shows the time involved. We also show what we were able to accomplish at the beginning of the video.

I need my spindle and cnc electronics repaired. How can I fix it?

• How can I control my motors and drivers from my pc?

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.

How can I control my motors and drivers from my pc?

• How can I connect the Pokeys57CNC controller to a DRV8825 / A4988 expansion board?

The DRV8825 driver IC by TI (Texas Instruments) has two main connections called STEP and DIR. These are the two main connections that you need to use to connect to the Pokeys57CNC controller. You also need to connect the positive digital voltage pin (5V) from the Pokeys57CNC controller's motor connector to both the reset and sleep pins. The GND pin from the Pokeys57CNC motor connector is connected to the GND pin of the DRV8825 driver. The enable pin of the DRV88525 can remain unconnected.

There is a trimmer potentiometer on the DRV8825 that can increase or decrease the amperage setting for the motor. Depending on the DRV8825 board you purchased, there may be two pads to determine the amp setting while turning the trimmer (in the voltage setting on your multimeter).

The A1 and A2 is connected to one of the motor's coils and B1 and B2 is connected to the other motor's coil. There is a pin on the DRV8825 called VMOT that you will connect to the power supply (max 45VDC) and the GND pin next to the VMOT is the V- for the same power supply.

I followed (to the best of my ability) the instructions provided to my original question, but I did not receive successful results. When I followed the instructions and connected the ground pin from the Pokeys57CNC motor connector to the DRV8825 / A4988 expansion board, it stops the communication between the Pokeys57CNC board & the motors 1-3 that I had working previously. The DRV8825 / A4988 expansion board will be the fourth driver I am connecting to the Pokeys57CNC. The previous three drivers are PoStep-60's if that helps understand the issue.

Prior to hooking up the ground pin (I used pin 10 from the Pokeys57CNC motor connector) to the DRV8825 / A4988 expansion boards ground pin, I was able to see the power being applied via the red LED being illuminated on the DRV8825 board; after this new configuration the light is not turning on.

With the new recommended setup, I used a heat shrink solder piece to add the shunt for the connection to the sleep pin. The connection to the sleep pin is where I believe my issues are stemming from. I must be connecting it to the incorrect pin (within the 9 pin layout on the DRV8825 / A4988 expansion board). Do you have any reference to the 9 pin pinout on the A4988 expansion board? I double checked the pinout provided on the Texas Instruments page, but it only gives clarity to the pinouts on the DRV8825 board itself. After reviewing their documentation, I tried connecting the 5v (pin 9 from the Pokeys57CNC motor connection that's split to connect with the reset pin on the DRV8825 / A4988) wire directly to the terminal on the DRV8825 board and that didn't work either.

Any help or clarification you can provide would be greatly appreciated!

How can I connect the Pokeys57CNC controller to a DRV8825 / A4988 expansion board?

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