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IndustryArena Forum > MetalWorking Machines > Benchtop Machines > BL-USBMach3 controller board Index issue, not work, random RPM value

Thread: BL-USBMach3 controller board Index issue, not work, random RPM value

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  1. 11-30-2020, 02:30 PM #1
    wy6688
    wy6688 is offline Member
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    BL-USBMach3 controller board Index issue, not work, random RPM value

    I'm using BL-USBMach3 board for my 7x12 mini lathe, setting Pin 15 as index input, following same rule as Parallel breakout board.
    but got random Spindle RPM value from 10-1000 RPM.

    I have no problem with LPT breakout board.

    Anyone have success with the BL-USBMach3 board to process Index input?

    Thanks
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  2. 12-01-2020, 04:38 AM #2
    CitizenOfDreams
    CitizenOfDreams is offline Member
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    Re: BL-USBMach3 controller board Index issue, not work, random RPM value

    What kind of tachometer do you have on your spindle? What kind of output does it have?
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  3. 12-01-2020, 05:35 AM #3
    wy6688
    wy6688 is offline Member
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    Re: BL-USBMach3 controller board Index issue, not work, random RPM value

    I use Hall sensor A3144, it produce one pulse every revolution, it is very stable with parallel breakout board.
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