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    jerome83136

    @jerome83136

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    • How to supress high frequency sound with ATOM STEPMOTOR and stepper motor ?

      Hello,

      I need to control a step motor with an ATOM STEPMOTOR.
      The motor is this one / specifications

      My wiring is:

      Connected pin 1 of the motor to the A+ of ATOM STEPMOTOR
      Connected pin 4 of the motor to the A- of ATOM STEPMOTOR
      Connected pin 3 of the motor to the B+ of ATOM STEPMOTOR
      Connected pin 6 of the motor to the B of ATOM STEPMOTOR
      Connected the + pin of a DC power supply (12V / 1.0A / 12.0 W) to the DC12V of ATOM STEPMOTOR
      Connected the - pin of a DC power supply (12V / 1.0A / 12.0 W) to the GND of ATOM STEPMOTOR
      

      NB: I also tried with another power supply (12V / 4.0A) and got the same result.

      I loaded the UIFlow example from M5Stack to the Atom

      When I test the build; the motor works correctly; but I can hear a very disturbing "high frequency" sound when the motor is idle.

      I tried removing all the UIFlow code except the ADC part and I still have this sound.
      alt text

      So I guess I have something to fine-tune regarding ADC; but what ?
      I tried reducing the "variable resistance" (little screw) until the noise gets suppressed. It worked but my motor has not enough torque for my need. How can I deal with this problem ?

      Thank you for your appreciate help.
      Best regards

      posted in Atom
      J
      jerome83136