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Question #: 969

Question: On the blacktooth machine wiring diagram for parallel breakout a wire goes from 6 on the BOB to TL on the laser power supply. My power supply has an"H" followed by a "L". Which is correct? I've connected to the "L" but the laser appears always on.

Current Solution

The digital signal portion of the CO2 laser tube power supply has various terminals for signal power, signal gnd, laser intensity and engaging the laser (turning it on or off). The TL and TH are triggers to turn the laser power on or off. These may be labeled L or H on some laser power supplies. You can use either TL/L, or TH/H to control the laser.

If you use the TL or L terminal to control the laser:
If a low signal (gnd) is present at that terminal, the laser will turn on. If a high signal (5v) is present, the laser will turn off.

If you use the TH or H terminal to control the laser:
If a high signal (5v) is present at that terminal, the laser will turn on. If a low signal (gnd) is present, the laser will turn off.

You should first test the control signal from the interface with a multimeter to make sure the laser will be controlled correctly before powering the laser power supply

Respond:

Other Possible Solutions to this Question

  • I am assebling the Blacktooth CNC laser 20x24" with what appears to be an updated power supply. After refrencing the wiring diagram on line and the totorial, may I ask for an updated diagram or totorial, the current version do not appear to match match the configuration provided. I do not feel confidant in the educational guess, that I have. thanks

    Wiring diagrams for the Laser Power Supply will be mostly the same with the updated power supply. The main difference is the newer power supply contains a secondary green terminal block on the front of the power supply next where the hard leads are connected. This differs from the older power supply which had contact points on the back of the power supply. Please refer to the tutorials section for updated information and if you have specific questions please email techsupport@buildyourcnc.com

    Click the link to add information to this solution:
    I am assebling the Blacktooth CNC laser 20x24" with what appears to be an updated power supply. After refrencing the wiring diagram on line and the totorial, may I ask for an updated diagram or totorial, the current version do not appear to match match the configuration provided. I do not feel confidant in the educational guess, that I have. thanks

  • I connected the electronics (for 2 x 4 feet) that I ordered from you. But how do I check if I connected all the wiring properly. There is neither any light on motor drivers nor on breakout board. And the motor shaft also does not move before and after the power supply is given.
  • I'm new to this and was wondering if I connected something incorrectly... I followed the schematics found on this site for wiring. I purchased the heavy gantry kit with the USB power option. All my lights come on and motor shafts resist turning but, I cannot get movement from Mach3. How do I test my equipment to see if I've damaged anything?

    By USB power do you mean the USB board? or do you mean that it is powered through USB but you have the parallel breakout board?


    Additional Information:
    I was referring to USB Board. Thanks for responding but that issue was resolve. I noticed that Mach 3 was downloaded twice. I copied and pasted RNR file to second copy of Mach 3 and motor runs properly. Should I remove one copy of Mach3 so there is only one? Seems like that could cause confusion. Thanks

    Additional Information:
    I was referring to USB Board. Thanks for responding but that issue was resolve. I noticed that Mach 3 was downloaded twice. I copied and pasted RNR file to second copy of Mach 3 and motor runs properly. Should I remove one copy of Mach3 so there is only one? Seems like that could cause confusion. Thanks

    Additional Information:
    I was referring to USB Board. Thanks for responding but that issue was resolve. I noticed that Mach 3 was downloaded twice. I copied and pasted RNR file to second copy of Mach 3 and motor runs properly. Should I remove one copy of Mach3 so there is only one? Seems like that could cause confusion. Thanks

    Click the link to add information to this solution:
    I'm new to this and was wondering if I connected something incorrectly... I followed the schematics found on this site for wiring. I purchased the heavy gantry kit with the USB power option. All my lights come on and motor shafts resist turning but, I cannot get movement from Mach3. How do I test my equipment to see if I've damaged anything?

  • I have nearly completed the CNC machine from the book, but I am using it with a USB breakout board, and have no idea how to wire the 6 limit switches to the board. I'm having difficulty following the diagram on the USB breakout board screen. Can someone please help me?

    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.

    Click the link to add information to this solution:
    I have nearly completed the CNC machine from the book, but I am using it with a USB breakout board, and have no idea how to wire the 6 limit switches to the board. I'm having difficulty following the diagram on the USB breakout board screen. Can someone please help me?

  • What's the cure for 110 volt pumps (air and water) and a 110volt laser power supply, in a Blacktooth Kit sent to Australia, where 240 volts is pleasingly normal. The fan and other power supply are 220 volts.

    If your country requires 220 volt peripherals (water pump or air pump) for the blackTooth laser system, then we will either send the 220/240 volt equivalents, or we will have them drop shipped from another location in your country, or a country with compatible power requirements.

    Click the link to add information to this solution:
    What's the cure for 110 volt pumps (air and water) and a 110volt laser power supply, in a Blacktooth Kit sent to Australia, where 240 volts is pleasingly normal. The fan and other power supply are 220 volts.

  • I am using 5 limit switches on my 3 axis machine. I am using the usb controller for planet cnc. I would like to know where all the wires related to the limit switches get connected? A diagram would be helpful.

    The diagram for wiring the USB interface board is located here: https://buildyourcnc.com/item/electronicsAndMotors-electronic-component-USB-Controller-Breakout#prettyPhoto/2/

    Under the board illustration, there are three smaller diagrams of limit switch wiring. On each, there are two connections, the GND and the pin which are labeled at the ends of the circuit on the diagrams. The pin side would go to the axis label ++ or -- terminal (i.e. X++, or X--). The other end, labeled GND would connect to any ground terminal on the board.

    Click the link to add information to this solution:
    I am using 5 limit switches on my 3 axis machine. I am using the usb controller for planet cnc. I would like to know where all the wires related to the limit switches get connected? A diagram would be helpful.

  • I am building my own laser and have watch your trocen videos.....but laser wont fire...double checked wiring and all seems correct to diagram....but the kit i bought was for a 40 watt and i amd using a 60 watt power supply and tube.....What size does the power switching unit need to be ....I think mine is too small for the trigger mA

    Is there a test button on the laser tube power supply? You can test the laser output by using the test button. This will help you determine if the laser tube is bad, or if you have wiring issues. Sometimes, wiring to he TL may not work as some controllers are set to active low, so you may need to wire the controller to TH instead.

    Additional Information:
    Additionally, the mA on the high tension line does not have any relationship to the digital trigger signal from the controller to the power supply.

    Click the link to add information to this solution:
    I am building my own laser and have watch your trocen videos.....but laser wont fire...double checked wiring and all seems correct to diagram....but the kit i bought was for a 40 watt and i amd using a 60 watt power supply and tube.....What size does the power switching unit need to be ....I think mine is too small for the trigger mA

  • Hi - I have wired in a breakout board (with relay) as per suggested wiring instructions (black toe 2X4). I want to wire in an estop but need some guidance on wiring. Also Mach3 is requesting I reset the estop, which suggests its expecting one? Can anyone help? Thanks. Miles

    The e-stop should be wired like a limit switch and can also be within the same limit switch circuit. Use one of the input pins to create the e-stop circuit.

    1. Run a wire from the input pin terminal to the e-stop switch red side (one of the two terminals on the red side). The red side is NC (Normally Closed).

    2. Run a wire from the other side of the red side of the e-stop switch back to the gnd terminal (or to the next switch - limit switch, NC terminal, then back to gnd, or to the next NC terminal of the next switch, do you see a recursive pattern here?).

    The wire that you use for the connections should be shielded and the shielding and any other loose wire within the cable should be tied to gnd.

    Click the link to add information to this solution:
    Hi - I have wired in a breakout board (with relay) as per suggested wiring instructions (black toe 2X4). I want to wire in an estop but need some guidance on wiring. Also Mach3 is requesting I reset the estop, which suggests its expecting one? Can anyone help? Thanks. Miles

  • I purchased limit switches from you mounted them on my machine and wire them to the breakout for using pin 12 and the ground on the breakout board, after a few minutes I got a message about a limit switch trip. Am I supposed to use the extra outport on the board instead of the ground?

    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.

    Click the link to add information to this solution:
    I purchased limit switches from you mounted them on my machine and wire them to the breakout for using pin 12 and the ground on the breakout board, after a few minutes I got a message about a limit switch trip. Am I supposed to use the extra outport on the board instead of the ground?

  • My Z-axis seems to be reversed on a fully assembled machine... I've tried reversing it in the config settings on Mach 3, but to no avail. What do I need to do? IS this a wiring issue that was not done correctly at the factory?

    If your Z axis is moving in the opposite direction, go into Mach3, click on config, ports & pins, then click on the motor outputs tab. You will see the axes labeled on the left and the parameters labeled on the top of this dialog box. Toggle the dir low active for the z-axis.

    Additional Information:
    What if I'm having the same issue on a different axis?

    Additional Information:
    You can follow the same procedure as with the z-axis. When you get to the motors outputs tab, toggle the dir low active checkbox for the axis that you would like to change.

    If you are using another control program, let me know and I will add the recommended action here.

    Additional Information:
    Girbl

    Additional Information:
    I have a grbl laser machine tronhoo machine that is running back wards and side ways wrong help

    Additional Information:
    I have a grbl laser machine tronhoo machine that is running back wards and side ways wrong help

    Additional Information:
    I have a grbl laser machine tronhoo machine that is running back wards and side ways wrong help

    Additional Information:
    I have a grbl laser machine tronhoo machine that is running back wards and side ways wrong help

    Additional Information:
    I have a grbl laser machine tronhoo machine that is running back wards and side ways wrong help

    Additional Information:
    I have a grbl laser machine tronhoo machine that is running back wards and side ways wrong help

    Additional Information:
    I have a grbl laser machine tronhoo machine that is running back wards and side ways wrong help

    Additional Information:
    I have a grbl laser machine tronhoo machine that is running back wards and side ways wrong help

    Additional Information:
    I have a grbl laser machine tronhoo machine that is running back wards and side ways wrong help

    Additional Information:
    I have a grbl laser machine tronhoo machine that is running back wards and side ways wrong help

    Additional Information:
    I have a grbl laser machine tronhoo machine that is running back wards and side ways wrong help

    Additional Information:
    I have a grbl laser machine tronhoo machine that is running back wards and side ways wrong help

    Additional Information:
    I have a grbl laser machine tronhoo machine that is running back wards and side ways wrong help

    Click the link to add information to this solution:
    My Z-axis seems to be reversed on a fully assembled machine... I've tried reversing it in the config settings on Mach 3, but to no avail. What do I need to do? IS this a wiring issue that was not done correctly at the factory?

  • The electronics for my current cnc machine has a 36v 8.8 amp power supply. Is this power supply sufficient to power my new Mach3 USB interface?

    The Mach3 USB interface card uses 5V (powered from the computer's USB) and a 24v to power the inputs, outputs and spindle control

    the mach3 usb interface can be found here:

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

    But the mach3 usb does not absolutely need the 24V supply. The 24v supply is only needed if you will be using limit switches (I1-4), VFD controlled automatically and for use with the outputs (O1-4)


    Additional Information:
    The 36v 8.8 amp power supply we typically recommend is for powering the stepper motor drivers.

    Click the link to add information to this solution:
    The electronics for my current cnc machine has a 36v 8.8 amp power supply. Is this power supply sufficient to power my new Mach3 USB interface?

  • Correct kit of motors and electronics, I bough a book in Amazons kindle to build a CNC, this book mention a kit of motors and electronics for parallel port, I want to use USB, can you suggest me the correct kit fot this machine.

    Dealing with our scratch Build kit/BYO CNC Book Kit, you will use our basic 3 axis electronics kit (https://buildyourcnc.com/item/electronicsAndMotors-3axis-425-elcombo). Now dealing with the Breakout Board, the book specifies the parallel port BoB, but you can use the USB BoB and use Planet-CNC rather than using Mach 3 or Linux-CNC as your control software.

    Click the link to add information to this solution:
    Correct kit of motors and electronics, I bough a book in Amazons kindle to build a CNC, this book mention a kit of motors and electronics for parallel port, I want to use USB, can you suggest me the correct kit fot this machine.

  • [575] I want to run a SAKO VFD SKI780 by means of this break out board. On https://www.youtube.com/watch?v=P6xxHj6qYSA is mentioned that the 10V terminal on the BOB is an input connection and that it ha to be connected with an external 10V supply source to obtain a 0-10V PWM signal on the AVI terminal of the BOB. I this correct?

    Make sure to watch this video that I created to correctly connect a VFD to the Mach3 USB controller. Yes, the 10V terminal on this controller is an input. VFDs typically have a 10V output that can be connected to this terminal.

    Additional Information:
    The video is here:

    &t=17s

    Additional Information:
    I have connected the VFD to the BOB and configured Mach3 confirm the video. It works perfect! I have only one question left: In the Spindle setup I entered 200 in the field for the PWMBase Freq. Now I measure a PWM signal at the AVI terminal of the BOB with a frequency of 1000Hz. Should this not be 200Hz? What could be the reason? What do I have to change to obtain 200Hz?

    Click the link to add information to this solution:
    [575] I want to run a SAKO VFD SKI780 by means of this break out board. On https://www.youtube.com/watch?v=P6xxHj6qYSA is mentioned that the 10V terminal on the BOB is an input connection and that it ha to be connected with an external 10V supply source to obtain a 0-10V PWM signal on the AVI terminal of the BOB. I this correct?

  • I have been using a Blacktooth for some time, with Vectric2d and Mach3. I have always found that the laser burns a hole before moving off. I have always set material thickness at actual value. Should it be set very low? Also, of the many post processors supplied with 2d, which is best for Blacktooth?

    If you have the laser firing using the Z direction, then you want to make sure that the thickness and clearance plane is extremely small. The time it takes for the software to think that the z axis has lowered to the depth set in the design is causing the laser to stay on in a single position for too long. Make sure that the depth is extremely small, like .0001" or the smallest amount allowed by the Vectric software. Also, make sure the clearance plane (the height that the z axis would raise to clear any protrusions like clamps and the such) is extremely low.

    Click the link to add information to this solution:
    I have been using a Blacktooth for some time, with Vectric2d and Mach3. I have always found that the laser burns a hole before moving off. I have always set material thickness at actual value. Should it be set very low? Also, of the many post processors supplied with 2d, which is best for Blacktooth?

  • I have a YDH-18-5 Power Supply AC Input:100-240v 47-63Hz, Ouput: 5v - 2A and need to know if its safe to use with the Parallel Breakout Board.

    The 5V power required for the breakout board can be a simple USB male to male cable, that will connect from your computer to the board itself.
    Now adding a external power supply make sure that it does not exceed a total of 5V and the standard 500 MilliAMP - 1 A.

    Click the link to add information to this solution:
    I have a YDH-18-5 Power Supply AC Input:100-240v 47-63Hz, Ouput: 5v - 2A and need to know if its safe to use with the Parallel Breakout Board.

  • In my 4'x8' Blackfoot rig, there is a maximum wire length of 16" between drivers, breakout board, and power supply as well as a maximum wire length of 10' from drivers to motors. What AWG wires should I use to connect power supply to drivers, drivers to motors, and drivers to breakout board?

    What we intend our customers to use for wiring the motors to the drivers will be 4 conductor 20 AWG cable, now for the PSU to Drivers; 16-18 Gauge wire should be used, and drivers to BB(Breakout Board) should be a 24 AWG wires.

    Click the link to add information to this solution:
    In my 4'x8' Blackfoot rig, there is a maximum wire length of 16" between drivers, breakout board, and power supply as well as a maximum wire length of 10' from drivers to motors. What AWG wires should I use to connect power supply to drivers, drivers to motors, and drivers to breakout board?

  • What is the difference between the 3 Blacktooth laser packages offered? Specifically, one with/without a computer? Why do I need one? Also, is the $2100 assembled vs the $1700 which is not? What am I paying $400 more for?

    If you read the description the first uses a parallel interface for computer hookup. The second uses USB interface for computer hookup. The third utilizes an integrated computer which is built into the package thus you do not need an external computer.

    Click the link to add information to this solution:
    What is the difference between the 3 Blacktooth laser packages offered? Specifically, one with/without a computer? Why do I need one? Also, is the $2100 assembled vs the $1700 which is not? What am I paying $400 more for?

  • As I am building my 20" x 24" laser engraver cutter, I notice that there is no parallel port on the onboard computer and I have the parallel breakout board any answers?

    Most motherboard do contain parallel ports, but the port connector may not be at the back (in the section where external connectors will be connected). Instead, the motherboard may contain an LPT ribbon connector on the actual face of the motherboard (usually along one of the edges). You will need a ribbon connector to a DB25 female connector.

    If your motherboard does not contain an LPT header on the motherboard, you can purchase a parallel printer adapter that plugs into one of the PCI slots. The price of the adapter is very inexpensive and sometimes is actually less costly than the actual ribbon connector.

    Click the link to add information to this solution:
    As I am building my 20" x 24" laser engraver cutter, I notice that there is no parallel port on the onboard computer and I have the parallel breakout board any answers?

  • Hello! Question about the x motor on the vlxl. There is no black lead. Is the yellow in its position? Also, I really just want to double check that this wiring diagram is solid. About to finish the wiring. Juan told me to use the 36V for the tube and 24 for the drivers. Correct?

    The stepper motor on the X axis on the VLXL is this motor here:
    https://www.buildyourcnc.com/item/electronicsAndMotors-nema34-651ozin

    There is no black lead on that motor and the connection diagram can be found here:
    https://www.buildyourcnc.com/Documents/PN.SM86HT80-5504B-U(inhouse%20PN.85BYGH450A-47-80)%20(1).pdf

    Red - A+
    Green - A-
    Yellow - B+
    Blue - B-

    The wiring diagram on the instructions for the Vertical Laser XL is meant as a general guide for all laser systems. The motor specific to the axis should be checked against the datasheet to insure proper wiring.

    The 24V power supply should be connected to the laser controller. The 36V power supply should be connected to the drivers to power the motion electronics.

    Additional Information:
    My fault. Must have had that backwards. I'm sure he told me the right way.

    Additional Information:
    Not a problem. The laser controller has two terminals labeled for the 24V connection.

    The 36V power supply works really well for stepper motor drivers as the voltage/current on this power supply allows for best stepper motor performance with this laser application.

    Click the link to add information to this solution:
    Hello! Question about the x motor on the vlxl. There is no black lead. Is the yellow in its position? Also, I really just want to double check that this wiring diagram is solid. About to finish the wiring. Juan told me to use the 36V for the tube and 24 for the drivers. Correct?

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