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vorillaz

Member since Jun 2019 • Last active Oct 2019
  • 2 conversations
  • 3 comments

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    Wow, @Gordon that was fast and damn awesome as well.
    Thanks so much for the info, I'll give it a try and let you know :)

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    Hey, y'all. I have the MDBT42Q breakout board and I am trying to create a simple example where a button is pressed and the stepper motor rotates for like a half revolution.

    I am using the A4988 drivers and I have managed to connect and continuously rotate the stepper motor using this sample code:

    const PIN_ENABLE = D14; 
    const PIN_STEP = D13;
    const PIN_DIRECTION = D12;
    
    digitalWrite(PIN_DIRECTION, direction);
    digitalWrite(PIN_ENABLE, enabled);
    
    analogWrite(PIN_STEP, 0.9, {freq: 100});
    

    I am not sure though how is it possible to count the steps per revolution and how frequency is related to rotation and time.
    Thanks in advance for your help :)

  • in Electronics
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    Hello y'all. I recently bought the MDBT42Q breakout board for quick prototyping as well as a few bare modules. As my prototype on the breadboards works, I want to design and order a few PCBs.

    In the bare module documentation, it is noted that:

    A 3v non-rechargeable lithium cell is ideal for this (LiPo batteries have a voltage that is too high and will need the voltage dropping with a diode or voltage regulator).x

    I was hoping if someone has any examples of circuits powering the MDBT42Q module. My goal is creating a prototype with a LiPo charger on board via a USB port, so any help, schematics or advice will be highly appreciated.

    Thanks in advance.

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