Wiper motor not getting sufficient current

[svkabd May 9, 2019 at 5:32 pm Post count: 0]

#35873 Reply |

I have a 12V wiper motor connected to the DROK motor driver (https://www.droking.com/160w-2-channel-dc-motor-driver-module-positive-negative-pwm-speed-regulation-optocoupler-isolation-dual-h-bridge-motor-controller) powered by a 24V 10A power supply and controlled by an ESP32.

I have connected the motor directly to a 12V power supply (bypassing the motor driver) to test it, and it runs fine – pulling about 2A.

When the ESP sends HIGH to the EN pin and HIGH/LOW to the INPUTS, the motor stutters and does not spin.  Measuring the current on the both the input and outputs of the driver shows that it is pulling less than 1A, thus not enough to power the motor.

Is this a faulty driver, or is there something else that I am missing?

[DrokKeymaster May 10, 2019 at 6:20 am Post count: 2971]

#35875 Reply |

Hello svkabd,

Thanks for writing in.

Did you send high to input 1 and low to input 2? or  input 1 is low, input 2 is high.

Best regards.

[svkabd May 10, 2019 at 2:41 pm Post count: 0]

#35876 Reply |

Both, depending on the desired direction of the motor.

[DrokKeymaster May 12, 2019 at 8:52 am Post count: 2971]

#35878 Reply |

Hello svkabd,

Do you mean you have tried both of below situations?

Could you please kindly tell us more details about the  connecton siganl terminal? It would be appreicated if you can show that by image.

Best regards.

[SVKABD May 13, 2019 at 2:31 pm Post count: 0]

#35884 Reply |

I exchanged this motor driver for a new one, and the new one is working properly.  The previous driver was defective.  Thank you for your assistance!

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