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  • Author Author: Former Member
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Dual Stepper Motor Driver for Arduino

Former Member

Dear fellows,

 

I want to share with you some info about a neat steeper driver board we designed, for driving two or four stepper motors (by stacking two boards) using Arduino UNO (& friends). This neat shield can be used for making pan and tilt mechanisms for cameras, small CNCs, 3D printers you name it.

This shield has a free downloadable example software (INO) and a video to demonstrate some of the capabilities. The driver chip used is L6470 from ST Microelectronics, a complex motion controller and microstepping driver, which may be a little bit discouraging, but after understanding how it works, and with the help of software examples it all starts to make sense. Schematics and a datasheet are availble also for download

Please watch the video, feel free to ask questions and leave feedback (I apologize for the bad sound, it was raining....)

 

 


And the most important ....Have fun!
Aurash

This shield can be sourced from amazon.co.uk or from altelectronics.co.uk - for 42 Eur (~ 35 Pounds Sterling)

image

Happy, prototyping

Aurash
  • in reply to Former Member

    I'm glad it helps, we are working on a few videos to cover more aspects like matching the parameters with your motors which can be quite challenging, am how to deal with coordinated movements when 2 motors need to move on a certain trajectory.

    you can find this shield now on sale amazon.co.uk or on our website.

    More, we are planing to write a short example on how to interface the shield with Raspberry Pi.

    Have fun,

    Aurash

  • This is a very educational video, it showed me the answer i'm looking for. image

     

    I'm building an motiondetecting autonomous paintballturret and i'm looking for a way to replace the servomotors with steppermotors, because the servos are to violent and jitter a lot. Via a code i wrote for the arduino uno and processing i made a program that detects motion via a webcam. in the videoframe there is a crosshair(targetbox) that follows a moving object and sends a signal to arduino so that my pan/tilt servos are causing the paintball gun to aim to the area where the crosshair on my screen is aiming. but the servomovements are so rough that the gun overshoots and makes my whole frame+tripot vibrate.

     

    With steppermotors i would like to make sure that when the onscreen crosshair detects movement, it will go from 0 to 1 without the rough movement.

     

    For exampel. a moving object coming from the right walks into the camera field of vision, and the gun/crosshair is aiming left cause there was nothing moving. With my servo's it instantly reacts, aims the gun at the target coming from the right and keeps aiming at it, but the servo is moving very spastic, with steppers i would like to have the gun slow down the moment it's on target and follows it very smoothly as the target moves forward.

     

    So this might be the way to go image

     

    Really helpfull video image