Hemera cause EMI for BLTouch

Discussion in 'HotEnds & Extruders' started by Mosher, Jan 22, 2020.

  1. Mosher

    Mosher Member

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    Hello guys,

    i need your help. Today i have installed Hemera with BLTouch on my Ender. During extrusion BLTouch randomly deploy and stows probe. I have posted a video here showcasing a problem

    I am using SKR 1.4 Turbo with Marlin 2.0.1 bugfix and BLtouch 3.1

    Do you have any idea how can i fix it?

    Thank you in advance for your help
     
  2. blt3dp

    blt3dp Member

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    Can't watch the video where I am, but are the wires running together in the same bundle? Stepper motors are known to induce interference in signal cables. Your best bet will be to either separate them or remove the Hemera wires from the sheath, twist each of the coils (black/green) and (blue/red). Then twist those 2 twisted pairs around each other the opposite direction.
     
  3. Mosher

    Mosher Member

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    Hello,
    it was a case. I replaced the cabe for steppers with CAT6a shielded cable with twisted pairs and the problem is solved.
    Thank you
     
    BladerunnerxRC likes this.

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