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Thread: DIY Arduino THC - Video

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EmptyNester DIY Arduino THC - Video 12-27-2012, 07:39 PM
acourtjester I bet you feel like an... 12-28-2012, 01:55 PM
greygizmo Looks like it is coming... 12-28-2012, 05:16 PM
EmptyNester Thanks MuttonHawq. I've... 01-25-2013, 11:04 AM
EmptyNester Status Update 01-02-2013, 12:58 AM
sportbike That looks nice. I will have... 01-02-2013, 01:12 AM
SeanMurphy265 I bet there are some THC... 01-03-2013, 02:37 AM
EmptyNester I doubt that. :) There's... 01-03-2013, 04:18 PM
sportbike That's probably not too big... 01-06-2013, 11:36 PM
EmptyNester More Understanding - not much... 01-06-2013, 11:18 PM
sportbike I would think running the... 01-06-2013, 11:40 PM
EmptyNester Sorry for the delay Sportbike... 01-10-2013, 11:59 PM
Rambozo Because of the tip outside... 01-11-2013, 05:05 AM
EmptyNester It's funny, but I had never... 01-11-2013, 11:13 AM
EmptyNester I'm currently using an... 01-26-2013, 12:39 AM
Rambozo I've seen one video where... 01-26-2013, 12:59 AM
EmptyNester Any idea what kind of... 01-26-2013, 01:51 AM
sportbike I just looked at it again and... 02-01-2013, 12:52 AM
EmptyNester I hadn't notice that before... 02-01-2013, 01:53 AM
sportbike Wow, that looks pretty good... 02-01-2013, 12:49 AM
EmptyNester Latest Update 01-11-2013, 12:17 AM
EmptyNester Working on Torch Control... 01-16-2013, 11:40 PM
EmptyNester Test Cuts with THC Control 01-25-2013, 12:57 AM
MuttonHawg This is a heck of a project -... 01-25-2013, 04:43 AM
agent4573 Sorry for taking so long, got... 01-25-2013, 07:34 PM
EmptyNester No problem, I completely... 01-25-2013, 07:51 PM
MuttonHawg Do you mean the sample rate... 01-25-2013, 08:21 PM
EmptyNester I was seeing variability... 01-25-2013, 08:57 PM
sportbike There is a post in the Pi... 01-26-2013, 10:20 PM
EmptyNester Kerf Detection Appears to Work 02-03-2013, 08:53 PM
Rambozo Very nice. I'm sure you can... 02-04-2013, 02:17 AM
furkanyilmaz Hi all, I made some cnc... 05-21-2015, 07:33 PM
EmptyNester Furkanyilmaz, I'll try to... 05-22-2015, 01:07 PM
furkanyilmaz Hi Rege, Thank you so much... 05-22-2015, 02:07 PM
none Although this thread looks... 08-19-2015, 12:20 PM
EmptyNester The micro-usb on the Arduino... 08-20-2015, 02:04 AM
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  1. Default

    Hi all,

    I made some cnc plasma cutters before, I use some standalone voltage THC's, candcnc's thc and capacitive thcs.
    I am using hypertherm plasma unit right now for test. Because I just found it from a friend for test the thc.


    There are two options on hypertherm's connections;

    1-Using the divided volts from a cnc interface connector.
    2-Using the undivided arc voltage from the inside of the plasma.

    I am using first option, there are 50:1 divided volts. I can reading this voltage well with voltmeter. And I am not using the voltage divider resistors.
    I have arc ok output from plasma. And one dry contact torch fire input.



    I have few questions;

    1-In the revESchematic the C8 value is 10uF but in the manual thats 68uF, in the component list same(68uF).
    Which one is right? My voltage isnt stabil enough and I am not sure why?

    2-I am trying to use windows thc interface but I have some trouble about it. I cant changing the modes, set volts etc.
    But I can see the leds and current volts working well with changes in arduinos Analog input. And I cant using the signal
    test screen to. When I hit the buttons there are no changes at the arduino output. Whats wrong? I can write a program in C.
    But I dont know so much things about object based programming languages like c++, csharp, java etc. So I cant commenting the
    source codes of windows interface.

    3-I couldnt install the mach3 files. I copy the dll files in to PlugIns folder and Mach3 folder but there are no wizards
    or plugins to use? So is there an any info about how to use the mach's thc plugin?

    4-In my country its hard to find resistors like 9.53k. So I am using trimpot as a resistor. And I need to redesign pcb
    for my components. I am using proteus to design the pcbs.But to be sure I am drawing the pcb without any mistakes
    I want to see pcb layout.But when I open the eagle layout there are some pins not connected
    to anywhere. Is there an complete layout or what should I change to see the all connections or layers. I tried something
    but didnt work. If there is a printed complete pcb for arduino mega it will be great, I can buy it.


    So I know something about electronic but not so much. I need just filters, and another things from arc voltages to
    Arduinos analog pin. After I make filters of project, other part is not hard to make i think. Could anyone help me
    about this? I buy lt1632 op-amp from an other country because there are no lt1632 in my country. But currently my
    filter is not working nicely. I need very stabilized arc voltages at my arduino's analog pin.

    Very perfect work EmptyNester(regeg). I will share my updates and changes with you. And I hope you will like it...

    I am so sorry about my bad english.
    Thanks in advance, have a nice arcs :)
    Last edited by furkanyilmaz; 05-21-2015 at 07:35 PM.

  2. #2

    Default

    Quote Originally Posted by furkanyilmaz View Post
    Hi all,

    I made some cnc plasma cutters before, I use some standalone voltage THC's, candcnc's thc and capacitive thcs.
    I am using hypertherm plasma unit right now for test. Because I just found it from a friend for test the thc.


    There are two options on hypertherm's connections;

    1-Using the divided volts from a cnc interface connector.
    2-Using the undivided arc voltage from the inside of the plasma.

    I am using first option, there are 50:1 divided volts. I can reading this voltage well with voltmeter. And I am not using the voltage divider resistors.
    I have arc ok output from plasma. And one dry contact torch fire input.



    I have few questions;

    1-In the revESchematic the C8 value is 10uF but in the manual thats 68uF, in the component list same(68uF).
    Which one is right? My voltage isnt stabil enough and I am not sure why?

    2-I am trying to use windows thc interface but I have some trouble about it. I cant changing the modes, set volts etc.
    But I can see the leds and current volts working well with changes in arduinos Analog input. And I cant using the signal
    test screen to. When I hit the buttons there are no changes at the arduino output. Whats wrong? I can write a program in C.
    But I dont know so much things about object based programming languages like c++, csharp, java etc. So I cant commenting the
    source codes of windows interface.

    3-I couldnt install the mach3 files. I copy the dll files in to PlugIns folder and Mach3 folder but there are no wizards
    or plugins to use? So is there an any info about how to use the mach's thc plugin?

    4-In my country its hard to find resistors like 9.53k. So I am using trimpot as a resistor. And I need to redesign pcb
    for my components. I am using proteus to design the pcbs.But to be sure I am drawing the pcb without any mistakes
    I want to see pcb layout.But when I open the eagle layout there are some pins not connected
    to anywhere. Is there an complete layout or what should I change to see the all connections or layers. I tried something
    but didnt work. If there is a printed complete pcb for arduino mega it will be great, I can buy it.


    So I know something about electronic but not so much. I need just filters, and another things from arc voltages to
    Arduinos analog pin. After I make filters of project, other part is not hard to make i think. Could anyone help me
    about this? I buy lt1632 op-amp from an other country because there are no lt1632 in my country. But currently my
    filter is not working nicely. I need very stabilized arc voltages at my arduino's analog pin.

    Very perfect work EmptyNester(regeg). I will share my updates and changes with you. And I hope you will like it...

    I am so sorry about my bad english.
    Thanks in advance, have a nice arcs
    Furkanyilmaz,

    I'll try to answer the best I can. I'm not at home, so I don't have everything in front of me. But I wanted to get you some answers right away.

    On the torch voltage.....

    Using a volt meter won't tell you how much noise you have on the signal. You really need to have an oscilloscope to get a good idea how clean the signal is. The other alternative is once you have the board working you can capture the input it's seeing using the PC app.

    I found that the noise was to large compared to the signal if I used anything but full arc voltage. The PP50 is nice because it offers that voltage at the CNC port. You will need to change the voltage divider resistor values if you don't use full arc voltage.


    1. I have to look at this at home. If C8 is the cap on the voltage divider, I believe it's 10 uF. (I'll have to check that when I'm at home.)

    2. I had problems with communications. There were two main causes. Incorrect wiring and bad opto-isolators. The wiring is easier to check. I got my opto-isolators on ebay. They are higher speed, so a bunch on them were bad. I used an oscilloscope to see the wave form and determine they are bad.

    3. You need the full licensed version of Mach for THC support. The Mach manual tells you how to install a plug-in.

    4. The Eagle files on github are the files that I used to get the boards made. If there are missing connections, then they aren't needed. If you want the actual Arduino Mega files, they are open source and you should be able to find them somewhere on the web. But, the parts are high density and can't be hand soldered.

    Rege
    Just starting in Aug '10
    ---
    Hobart Handler 187
    Power Plasma 50

  3. Default

    Quote Originally Posted by EmptyNester View Post
    Furkanyilmaz,

    I'll try to answer the best I can. I'm not at home, so I don't have everything in front of me. But I wanted to get you some answers right away.

    On the torch voltage.....

    Using a volt meter won't tell you how much noise you have on the signal. You really need to have an oscilloscope to get a good idea how clean the signal is. The other alternative is once you have the board working you can capture the input it's seeing using the PC app.

    I found that the noise was to large compared to the signal if I used anything but full arc voltage. The PP50 is nice because it offers that voltage at the CNC port. You will need to change the voltage divider resistor values if you don't use full arc voltage.


    1. I have to look at this at home. If C8 is the cap on the voltage divider, I believe it's 10 uF. (I'll have to check that when I'm at home.)

    2. I had problems with communications. There were two main causes. Incorrect wiring and bad opto-isolators. The wiring is easier to check. I got my opto-isolators on ebay. They are higher speed, so a bunch on them were bad. I used an oscilloscope to see the wave form and determine they are bad.

    3. You need the full licensed version of Mach for THC support. The Mach manual tells you how to install a plug-in.

    4. The Eagle files on github are the files that I used to get the boards made. If there are missing connections, then they aren't needed. If you want the actual Arduino Mega files, they are open source and you should be able to find them somewhere on the web. But, the parts are high density and can't be hand soldered.

    Rege
    Hi Rege,

    Thank you so much because of your fast reply.

    If you send me a pm about when you are gonna be available, I will be online in the same time.

    So c8 isnt the cap at the voltage divider. Its right before Arduino's analog pin. I will wait to go your home about it.

    In serial communucation I am using the arduino's usb port. I think I should tell I am not using the complete board. I install the filter circuit on a breadboard. And When I want to send a logic data to your design I am using jumpers on breadboard. So for example I am connecting the torch on pin to gnd after this I am connecting the arc ok input pin to gnd. After this arc ok and torch on leds turning on. And I am using leds on breadboard to see the output status of arduino...

    I am going step by step because when I am designing a circuit, when I design everything and after build everything usually something going wrong. And in this method its hard to find whats wrong. So I am using one step, test, one step, test method.

    And my friend have very nice soldering workstation, oscilloscope etc. When I am soldering a optocoupler, I am not burning out the ic. Usually I am using socket for ics like mcu, opto... But I couldnt use oscilloscope when I am making test cause my friend is out of the city right now. So dont worry about the component soldering. But I will take a look the system with an osciloscope soon.

    My mach3 is licensed.

    I tried to copy files like I did before. Ok I am gonna take a look to the mach3's manual.

    But I am not sure about eagle files. Because some diodes and some capacitors one leg isnt connected to anywhere in eagle layout. I am skipping something about eagle or there is a different method about circuit designing, and I couldnt understand because of I am not a guru about electronics.

    Rege Thank you very much again, thats really helpful documents. And thank you very much again for you are spending time for me...

    Have a nice day

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