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Arduino Forum High Power Arduino Motor Control
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  • motion_control
  • robot
  • cnc
  • motors
  • servo
  • arduino
Related

High Power Arduino Motor Control

chrisbaron
chrisbaron over 14 years ago

Hi All,

 

Wanted to let you know about my company's new motor control shield for Arduino - the MegaMoto.  This is a 7V-28V, 13A continuous, 30A+ peak stacking shield.  It contains two half-bridge MOSFET chips so it can control one motor in H-bridge (forward/reverse) mode or two in half-bridge (forward only) mode.

 

Jumpers connect the MOSFET inputs to the Arduino output pins so you can choose which pins control the Enable and PWM inputs.  Since the Uno has 6 PWM outputs you can stack 3 of the MegaMotos on one Arduino.  Also since the MOSFETs are independent half-bridge chips you can control brushless and stepper motors as well.

 

Info here:  http://www.robotpower.com/products/MegaMoto_info.html

 

Photos attached.

 

Chris Baron

Robot Power

chris@robotpower.com

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  • Catwell
    Catwell over 14 years ago

    Chris,

     

    Welcome to Element14! And you bring a gift, I  see.

     

    Excellent work. How easy would it be to set up  stepper motor control with your MegaMoto boards? Or can you make a stepper driver as well?

     

    Cabe

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  • chrisbaron
    chrisbaron over 14 years ago in reply to Catwell

    Hi Cabe,

     

    Stepper control should be easy.  The half-bridge circuits are independent so you can use as many as needed for the coils on your stepper.  There is no high-voltage chopper circuit and the maximum voltage is 28V so you can't get as much out of your motors as some dedicated drives.

     

    We haven't done any examples of stepper control yet unfortunately.

     

    Chris

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  • Catwell
    Catwell over 14 years ago in reply to chrisbaron

    Chris,

     

    Yes 28V is rather low. What mosfet IC are you using?

     

    Cabe

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  • chrisbaron
    chrisbaron over 14 years ago in reply to Catwell

    The MOSFET chips are the BTN7960b from Infineon.  These are P-N MOSFET pairs not DMOS so they are higher current and lower voltage.  Unfortunately they are an integrated chip with drivers and protection built-in so there is no chance to upgrade the voltage.  I've asked the Infineon guys about a 42V automotive version but they said that one probably won't happen.  So, 28V is it.

     

    Chris

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  • chrisbaron
    chrisbaron over 14 years ago in reply to Catwell

    The MOSFET chips are the BTN7960b from Infineon.  These are P-N MOSFET pairs not DMOS so they are higher current and lower voltage.  Unfortunately they are an integrated chip with drivers and protection built-in so there is no chance to upgrade the voltage.  I've asked the Infineon guys about a 42V automotive version but they said that one probably won't happen.  So, 28V is it.

     

    Chris

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  • chrisbaron
    chrisbaron over 14 years ago in reply to chrisbaron

    Looks like the MegaMoto will be in the next Jameco catalog.  We are jazzed about that. I've been looking at those catalogs since the 70s so it is cool to have a product for sale in there.

     

    Chris

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