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Question #: 13761

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

Current Solution

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

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Other Possible Solutions to this Question

  • I have a "Based on planet-cnc's diy cnc usb controller", how I can connect a signal to turn on a mist?

    If you need to control mist, coolant or spindle using the USB Planet-cnc controller, you will need to connect that specific output terminal to an SSR (Solid State Relay). The solid state relay will act as a switch when the output signal is engaged.

    Additional Information:

    I did it, I activated the output signal in the planetcnc software but at the output there is no voltage

    Click the link to add information to this solution:
    I have a "Based on planet-cnc's diy cnc usb controller", how I can connect a signal to turn on a mist?

  • 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 hope this helps. If not, please add additional information on this thread.

    Additional Information:
    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!

    Click the link to add information to this solution:
    How can I connect the Pokeys57CNC controller to a DRV8825 / A4988 expansion board?

  • Please provide detailed instructions on how to connect limit switches to CNC USB BOARD. I can not find instructions anywhere. I am new to cnc world and really need help. Thanks

    The USB Interface page: https://buildyourcnc.com/item/electronicsAndMotors-electronic-component-USB-Controller-Breakout

    On this page, there is a datasheet that explains the connection schemes for the limit switches on step 1 of the instructions. The datasheet explains single and multiple switch configurations and parallel/serial connections schemes for the NO/NC (Normally Open/Normally Closed states).

    If there is further information you need, please reply on this FAQ.

    Click the link to add information to this solution:
    Please provide detailed instructions on how to connect limit switches to CNC USB BOARD. I can not find instructions anywhere. I am new to cnc world and really need help. Thanks

  • How can I connect an inductive proximity sensor to the Mach3 USB controller?

    I would suggest using the NPN proximity sensor for the Mach3 USB or the Pokeys57cnc. The proximity sensors have a top DC voltage limit of 30 volts, so it would be best to use the 24V power supply that is used to power the controller. Both controllers have a 24V power requirement, so that is convenient.

    The blue wire of the proximity sensor is the GND wire and is connected to the 24V power supply's V- terminal. The brown wire is the positive wire and is connected to the V+ terminal of the 24V power supply. The black wire is the signal wire and is connected to the input terminal of the controller.

    Click the link to add information to this solution:
    How can I connect an inductive proximity sensor to the Mach3 USB controller?

  • HOW DO I CONNECT A TOUCH PLATE TO THE BREAKOUT BOARD?

    The instructions on how to do this are found here, in these two videos, http://buildyourcnc.com/PrimeronHomingandLimitSwitches.aspx

    Additional Information:

    Click the link to add information to this solution:
    HOW DO I CONNECT A TOUCH PLATE TO THE BREAKOUT BOARD?

  • I HAVE YOUR MACH3 USB BOB, DO YOU GUYS SELL A TORCH CONTROL RELAY CAN WIRE UP TO TURN MY PLASMA ON AND OFF HOW WOULD WIFE THAT TOO THIS BOB?

    We do have a relay board that words like a standard relay.

    Here is the URL of the relay board that we offer:

    https://www.buildyourcnc.com/item/electronicsAndMotors-breakout-Relays-relay-board-250V-12A-5V

    Click the link to add information to this solution:
    I HAVE YOUR MACH3 USB BOB, DO YOU GUYS SELL A TORCH CONTROL RELAY CAN WIRE UP TO TURN MY PLASMA ON AND OFF HOW WOULD WIFE THAT TOO THIS BOB?

  • Can you tell me the correct way to wire tool probe on your Mach3 USB board?

    Please not using output 3 & 4 Termials on board as manual states dose not work!

    Click the link to add information to this solution:
    Can you tell me the correct way to wire tool probe on your Mach3 USB board?

  • Please explain how to connect 2.5AMP stepper motor driver to USB board. All parts are from your store. Thanks

    From the USB controller, the CP+ and CW+ are connected to the 5V terminal. The CP- is connected to the CP terminal of the driver and the CW- is connected to the CW terminal of the driver.

    Additional Information:

    Click the link to add information to this solution:
    Please explain how to connect 2.5AMP stepper motor driver to USB board. All parts are from your store. Thanks

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

    "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).

    Additional Information:


    Additional Information:

    Click the link to add information to this solution:
    How do I connect a Z-Axis touch plate to the Planet-CNC USB interface?

  • Whereb can I find directions on how to install the Mach3 USB board with Mach 4 software? I do not have a parallell port.

    You can find instructions for the Mach3 USB here:
    https://www.buildyourcnc.com/item/electronicsAndMotors-electronic-component-breakout-Mach3-USB-Board

    You will probably need to use the Mach3 USB board with Mach3. We have not tested the Mach3 usb card with Mach4.

    Click the link to add information to this solution:
    Whereb can I find directions on how to install the Mach3 USB board with Mach 4 software? I do not have a parallell port.

  • I have your mach3 USB BoB, do you guys sell a torch control relay I can wire up to turn my plasma torch on and off and how I would wife that too this BoB?
  • Should I connect both the USB and the 25 pin connector of the parallel breakout board to the computer?

    The parallel breakout board has the db25 connector for data and the USB connector for power. Connect the USB from the computer to the parallel breakout board so the breakout board will have 5V of power coming from the computer. The db25 connector (connector with the 25 pins) receive data signals for each pin from 1 to 17 and have respective numbered screw terminals, some for input and some for output (18 to 25 are gnd pins).

    Click the link to add information to this solution:
    Should I connect both the USB and the 25 pin connector of the parallel breakout board to the computer?

  • How do I connect the outputs on the USB motion card for Mach3?

    A 24V connection to the USB motion card is only needed if you are using limit switches (inputs), powering the spindle/VFD speed and direction, and for the outputs, for powering other devices (mist, coolant, etc.).

    If you are using a VFD (Variable Frequency Drive, also called Inverter) for a spindle, they typically have a 24V out terminal that can be used with our USB motion card. If you are not using a spindle/VFD (we highly recommend one), then you will need to purchase a 24v power supply to power that side of the board.

    The outputs mentioned above are to connect to external devices and will require a relay (a mechanical switch that is controlled by a digital signal). This mechanical switch can turn on a device like coolant and mist, or even a router, if you are using one. A relay is required to turn on these devices because the devices are typically higher voltage, like mains (110v or 220v). So, a relay can turn on or off a high voltage device with a lower voltage (24v) signal.

    Click the link to add information to this solution:
    How do I connect the outputs on the USB motion card for Mach3?

  • 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

    You will also need to download the Microsoft .net 3.5 framework and install it: https://www.microsoft.com/en-us/download/details.aspx?id=21

    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.

    Additional Information:
    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?

    Additional Information:
    If you received a spindle without a VFD, please contact us asap. Our spindle will not work without a VFD.

    Additional Information:
    Hi, how is this setup in mach4?

    Click the link to add information to this solution:
    how do I connect my spindle to mach3 so mach3 can control it

  • How do I connect the outputs on the Mach3 USB motion card?

    A 24V connection to the USB motion card is only needed if you are using limit switches (inputs), powering the spindle/VFD speed and direction, and for the outputs, for powering other devices (mist, coolant, etc.).

    If you are using a VFD (Variable Frequency Drive, also called Inverter) for a spindle, they typically have a 24V out terminal that can be used with our USB motion card. If you are not using a spindle/VFD (we highly recommend one), then you will need to purchase a 24v power supply to power that side of the board.

    The outputs mentioned above are to connect to external devices and will require a relay (a mechanical switch that is controlled by a digital signal). This mechanical switch can turn on a device like coolant and mist, or even a router, if you are using one. A relay is required to turn on these devices because the devices are typically higher voltage, like mains (110v or 220v). So, a relay can turn on or off a high voltage device with a lower voltage (24v) signal.

    Click the link to add information to this solution:
    How do I connect the outputs on the Mach3 USB motion card?

  • 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.

    Click the link to add information to this solution:
    How can I connect my pc to my motor drivers and motors?

  • I AM PUTTING TOGETHER THE BLACKFOOT AND USING A PORTER CABLE ROUTER. CONFUSED ON HOW TO RELAY ROUTETR WITH USB BOARD. IS THERE ANOTHER SWITCH THAT GOES BETWEEN BOARD ROUTER SO PLANET CNC CAN TURN PERHAPS VACUUM OFF?

    We are currently working on a relay board that will connect to USB breakout board, and the router/spindle for both the on/off function. Unfortunately we still do not have it completed or ready to be placed on our website, but it is in the final stages of testing. Please check back regularly for updated stock!

    Here is a link to a tutorial for a DIY relay circuit:



    There is no vacuum control on the Planet-CNC program, however you could use the same concept of the router/spindle on/off using the relay circuit. Although you will have to use either the flood or mist function for the vacuum.

    Click the link to add information to this solution:
    I AM PUTTING TOGETHER THE BLACKFOOT AND USING A PORTER CABLE ROUTER. CONFUSED ON HOW TO RELAY ROUTETR WITH USB BOARD. IS THERE ANOTHER SWITCH THAT GOES BETWEEN BOARD ROUTER SO PLANET CNC CAN TURN PERHAPS VACUUM OFF?

  • I recently purchesed a USB Mach3 breakout board and need help setting mach3 to use a relay to start the router can you show how to set the pins and which port to use on the board to attached the relay?

    Sure, connect O2 (output #2) on your mach3 USB board to the GND side of your relay coil. Connect the 24V power supply to the positive side of your 24v relay.

    You will want to connect a flyback diode (1N4007) between the coil connections to make sure the coil back current does not damage the Mach3 USB board.

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

    Please let me know if this helps and if you need further guidance.

    Thanks

    Click the link to add information to this solution:
    I recently purchesed a USB Mach3 breakout board and need help setting mach3 to use a relay to start the router can you show how to set the pins and which port to use on the board to attached the relay?

  • I have a "Based on planet-cnc's diy cnc usb controller", I activated the output signal (mist, coolant or spindle) in the planetcnc software but at the output there is no voltage, what can I do to turn on this elements?

    On the Planet-CNC board, the Mist, Spindle and Coolant outputs will require a relay to switch on those devices. Test one of those terminals with a multi-meter (Mist, Coolant, or Spindle). Each of these terminals have a GND next to the terminal for the device.

    Test the voltage across the GND to the terminal with the arrow that you want to test. Go to the software and click on the device you want to test (mist, coolant or spindle) and note the voltage. If no voltage is output then check under the board to where the terminals are soldered. Re-test the terminals across the solder joints rather than the terminal block wire inputs. If you get a voltage, then there is a problem with the terminal block. If you don't get a voltage, then the board is not functioning properly.

    Additional Information:
    I activated the output signal.. I did the tests indicated and I did not get voltage. I heated the welds of the three outputs and now works coolant but no mist or spindle, what should I do?

    Additional Information:
    There are probably cold joints on the board at the chip or the resistors on the traces for those terminals. You can send the board back to us and we will repair and test the board.

    Click the link to add information to this solution:
    I have a "Based on planet-cnc's diy cnc usb controller", I activated the output signal (mist, coolant or spindle) in the planetcnc software but at the output there is no voltage, what can I do to turn on this elements?

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