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  1. #1
    Join Date
    May 2005
    Posts
    35

    Question Mach3 & DigiSpeed

    Hi guys.
    Maybe this is an easy fix.
    A wile back I connected Peter's DigiSpeed to my Sieg (Cummins) 7x12 lathe.
    I just got Arturo's Bi-directional, Mini Power Supply and Charge Pump boards because I didn't have any more available inputs on my HobbyCNC board.
    The more I read, the more I thing I should run Step/Direction vers. PWM.
    The Charge Pump is/was giving me fits (the relay is opening and closing really fast) so I disconnected it from the circuit. was set to Port 2 Pin 1

    With the Bi-directional board connected to my second port (B800)
    Enable for DigiSpeed - port 2 pin 16
    PWM for DigiSpeed - port 2 pin 14
    Mach3Turn Disable Spindle Relays box unchecked
    Clockwise Output #1
    CCW Output #1
    checked Spindle Motor Output box
    checked PWM Control
    Enabled Output #1 port 2 pin 14

    I am a lot confused as to what to do with the Enable for DigiSpeed
    Enabled Enable1 port 2 pin 16

    I tried both Active Low and High, all I get is a solid red LED on the DigiSpeed

    Maybe it's my 2nd port? It's a SYBA (Model No. SB-PCI9715-2P) 2 parallel ports, I bought off Newegg a year ago. Or that long cable I'm using.

    Thanks,
    Bill

  2. #2
    Join Date
    May 2005
    Posts
    35
    OK, laugh with me now.
    Wile lying in bed last night thinking, I thought, I wonder ......
    I got up this morning and had a look, sure enough I'd forgotten to plug the mini-Din cable into the DigiSpeed.
    Now the other (correct) LED is a solid red.
    But it still don't work.
    I've been using Mach3 Ver. R1.83.044 and making chips with success.
    Now I want to try Surface Feet and Threading.

    On the Motor Outputs Tab, where should I have the Spindle set using PWM Control?
    The DigiSpeed has Enable and PWM not Step and Dir.

    Bill

  3. #3
    Join Date
    May 2005
    Posts
    35
    K, after getting the mini-Din cable plugged in and setting Mach3 Spindle Step to pin 14 port 2 I'm getting a fast flashing red led.
    Still no spindle on.
    I put the switch in manual, turn the manual switch to forward and the manual pot on. As I turn the manual pot up the spindle starts turning and the led is now flashing green fast as well as the red.
    Sounds like / looks like my spindle timing pulse it somehow tied to Step/Dir input mode.
    I have Ver. 1a breakout board and I checked the pinouts on the cable/board to the manual. Everything look correct.

    Bill

  4. #4
    Join Date
    May 2005
    Posts
    35
    With some step by step from Peter and some scratching of my head, I got it.
    My LPT2 is not the port on my SYBA 2 parallel port card, it's the second port that is attached by the ribbon cable to the card.
    Now I just need to figure out why it wont turn the spindle on and why my timing/index circuit don't work the way I thought it would.

    Bill

  5. #5
    Join Date
    Oct 2007
    Posts
    30

    PWM problem

    I have similiar problem.
    Can not measure any impulses coming out of LPT for PWM spindle speed control.
    I tested everything, Changed LPT pins, setting, etc. No luck!

    Very funny, first day it worked OK. Next morning turn on the system, and this feature is OUT!
    I lost 2 days trying to figure it out, but still no idea!

    Anyone with similiar problems? And solutions?

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