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Brushless gimbal motors as steppers

Posted by leprud 
Brushless gimbal motors as steppers
December 21, 2016 01:00AM
Howdy.
Don't know why and what for, but i made brushless gimbal motors to act as steppers spinning smiley sticking its tongue out
Used open-source BGC (martinez design, i guess, widely available) with L6234, simple coding, and whoila!

Tick-tock on full speed with 250 steps [www.youtube.com]
with 150 steps [www.youtube.com]
and acting as driver for standard marlin/ramps [www.youtube.com]

Now i'm thinking of how can i use them: torque is real low, motors get really hot, they are not as fast as specialized galvo, they cost exactly as nema17, etc..
What do you think?
Re: Brushless gimbal motors as steppers
December 21, 2016 01:43AM
I always thought their torque/weight ratio would be better than normal steppers, because of the strong magnets.
Does the L6234 have inbuilt current control or is it on the Martinez controller?
I know the drivers can handle up to 5A, so it needs optimized code and hardware or the BLDC need some better windings.
Re: Brushless gimbal motors as steppers
December 21, 2016 01:54AM
I got rather small motors, less then 40 gramms.
No current control, always at max, so using PWM for "power control"

The only good thing about BL motors is tiny step, i guess, even with 8 bit PWM
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