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IndustryArena Forum > CNC Electronics > Hobbycnc (Products) > Help finding good BOB for 5 Axis mill with KBMM-125 spindle speed controller

Thread: Help finding good BOB for 5 Axis mill with KBMM-125 spindle speed controller

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  1. 11-14-2023, 08:38 PM #1
    joeavaerage
    joeavaerage is online now Member
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    Re: Help finding good BOB for 5 Axis mill with KBMM-125 spindle speed controller

    Hi,
    I suspect you'll need a specialized circuit to control the speed of your spindle, you are replacing a potentiometer rather than a straight varying 0V-10V.

    The C10 is a basic BoB and does not have any PWM output circuit, but you could make your own circuit, a half a dozen components or so on some vero-board.

    Craig
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  2. 11-14-2023, 09:01 PM #2
    joeavaerage
    joeavaerage is online now Member
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    Re: Help finding good BOB for 5 Axis mill with KBMM-125 spindle speed controller

    Hi,
    there are two ways to control this unit, either by replacing the potentiometer an opto-isolated MOSFET switch OR supply an isolated varying 0-9V analogue signal in voltage follower
    mode. Of the two methods the voltage follower mode is the best.

    Craig
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