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Type: Posts; User: KOC62

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  1. Replies
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    Re: open source Atmel/arduino PID motor control

    The protection is a fuse in the motor wiring. The fuse should be sized such that if the motor stalled the fuse will blow. This fuse amperage selection will vary depending on the motor selected and...
  2. Thread: Too Much

    by KOC62
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    34

    Re: Too Much

    That is part of the key to success. Under the circumstances, you know that you did the best that you could do, and that the rest is beyond your control. Then you may be at peace with yourself and...
  3. Thread: Too Much

    by KOC62
    Replies
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    Re: Too Much

    Only you can decide. We're not in your shoes.

    I do know that being in a "pressure cooker" work environment is not good for anyone's health, however you value that.
    Secondly, I prefer to find...
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    Re: open source Atmel/arduino PID motor control

    So the pulses do move relative to the zero crossing signal. The next step is to figure out why the motor doesn't change rpm with the pot change.
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    Re: open source Atmel/arduino PID motor control

    Have you used EXT trigger?
    Must be a front panel jack for an external trigger. You would this jack to connect to the ZC signal going to your Arduino input. Then set your trigger mode to external....
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    Re: open source Atmel/arduino PID motor control

    I would use the Arduino input (ZC) to also trigger your 'scope and then 'scope your pulse output of the Arduino, which should move position with pot rotation.
  7. Replies
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    Re: open source Atmel/arduino PID motor control

    That certainly is not right. Your zero cross detector is suppose to sync with your line freq. Are you triggering your 'scope to the line freq? Else it will stay the same if it triggers with itself.
  8. Replies
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    Re: open source Atmel/arduino PID motor control

    OK.
    Is it possible that you have the wrong opto-isolator for triggering your triac? Some of them use a "zero-cross" circuit inside that only allows OFF - ON operation, with no delay triggering.
    ...
  9. Replies
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    Re: open source Atmel/arduino PID motor control

    Have you been able to get your controller to work?
    If not, have you been able to test the triac circuit to see if controls the motor manually?

    For example, the analogValue is forced to fall...
  10. Replies
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    Re: open source Atmel/arduino PID motor control

    I don't have a working unit as I never completed this project.

    Regarding the potentiometer (pot) changes, I have two suggestions;

    a) you could remove the comment slashes (i.e. //) in front of...
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    Re: NEMA34 stepper motor driver

    Ahh... just noticed the 160K/min which I was seeing as 160K/sec. My bad...
  12. Replies
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    Re: NEMA34 stepper motor driver

    If one is using Mach 3 with a kernel speed of 25KHZ then you can't exceed 25000 steps per second, right? Unless you get a license and have around 100KHZ kernel rate - if the PC hardware permits.
    You...
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    Re: NEMA34 stepper motor driver

    You can also increase the stepper motor speed by increasing the power supply voltage. Take a look at this primer; https://www.geckodrive.com/support.html
  14. Replies
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    Re: open source Atmel/arduino PID motor control

    No, there isn't a complete guide. Member "straga" has working code. He posted his code and schematic here; https://github.com/straga/PIDSPINO
    You will need to know enough about electricity and...
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    Re: How do you CAD/CAM/G-Code

    Many here started before Fusion360 was around. So they developed and trained on different software packages that were available within their price range and ease of use. Most don't want to spend the...
  16. Thread: CNC Quilting

    by KOC62
    Replies
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    24

    Re: CNC Quilting

    I'd be interested in the cnc quilting long arm idea.
  17. Replies
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    Re: NEWBIE IN ELECTRONICS - PLEASE HELP!!!

    Your stepper is a 1.5A while your driver board can only handle 1 amp. With a proper heatsink it could handle your 1.5A motor. you may want to review this.
    When you wire all the parts together it is...
  18. Thread: 20W Fiber Laser!

    by KOC62
    Replies
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    30

    Re: 20W Fiber Laser!

    The keyboard and mouse connect to a computer, not the laser unit.
    This video shows a similar unit and it uses a computer built in a monitor.
    It also appears to use the LAN from the laser unit to...
  19. Thread: 20W Fiber Laser!

    by KOC62
    Replies
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    30

    Re: 20W Fiber Laser!

    Generally you need a computer connection, which in your case is a USB port.
    Then you need software, installed on your computer, which understands the laser commands.
    Your system appears to...
  20. Thread: 20W Fiber Laser!

    by KOC62
    Replies
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    30

    Re: 20W Fiber Laser!

    According to your link, USB.
    You didn't get a user manual with it?
  21. Re: Hi all, new member here, Loren Coty in California

    Welcome to the forum. Many posts here that you can read to see what others have done, and are doing.
    Regarding your request for advice is difficult as you didn't provide any info to advise on. If...
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    Will you have a brake to stop the motor? If not,...

    Will you have a brake to stop the motor? If not, how will you be assured that the motor inertia won't keep the motor turning for a small moment?
    It is this portion of your algorithm that I'm not...
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    Re: DIY- CNC Embroidery Machine

    Yes, I believe you!
    I have the electronics skills, but have not bought the parts to experiment. Many other projects (e.g. fixing audio power amplifiers, refurbish computers for friends...) and...
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    Re: DIY- CNC Embroidery Machine

    Mike:
    Welcome to this thread. Good to have experienced people to guide us.
    This thread started with the idea of using a basic general purpose, and readily available sewing machine. This idea has...
  25. Replies
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    Re: DIY- CNC Embroidery Machine

    golinux:
    At what point did you want to pause the needle motor?

    I've watched my wife's commercial embroidery machine and it only pauses when the thread breaks, or when the user needs to change...
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