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Arduino - Control Position of DC Motor Precisely via Web

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  • Arduino - Control Position of DC Motor Precisely via Web 4 months ago

    Hi Dan Murphy,
    Unlike step motor, DC motor itself does not have mechanism to control its position.
    If we supply power to motor, motor just rotates until we stop supplying power. The more power, the faster it rotates. Therefore, position of DC motors is decided by the power we put on it. So, to control position of DC motor, we needs to control its power supply.
    There is no information that how many watt we should supply to make DC motor move to a specific position.
    What we can do is:
    - supply a amount of power in short time.
    - observe the how fast the motor rotates and current position
    - increase or decrease power based on the the observation
    Repeat this process until DC motor reaches the desired position and then stop supply power.
    That is how PID controller works.
    You can imagine:
    "DC controller controlled DC motor do a desired position" like "Driver drive car to a desired position"

    For more information, you can refer to https://forum.phpoc.com/blogs/iot-lover/1289-arduino-pid-controller-auto-tuning-library-and-example-for-dc-motor

  • Arduino - Detect Someone Taking Your Stuff and send Gmail 8 months ago

    I am sorry for late reply. I did NOT get notification from your comment.
    Of course it can. you can replace the warning lights & electric horns with led and buzzer only.
    By that way, you do NOT need to use relay.

  • Arduino - Detect Someone Taking Your Stuff and send Gmail 8 months ago

    I am sorry for late reply. I have no knowledge with NodeMCU

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