Ok, the maslow kit is $410 IIRC, I thought the very high power hobby motors were
more expensive than that. I was thinking that they were $100-150
David Lang
Very nice! Have a look at the CoreXY machine I’m building, I think a design similar to that would be very good for lasering. Especially since the moving mass is minimal, especially in the X direction, so it would raster very well.
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not counting the Z axis
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Yes, the 370 gearbox fits the turnigy motor @madcowswe proposed - it has a 6mm shaft the same as the current one.
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The issue at those speeds will be wear - brass worm drive gears will get very hot, very fast, if spun at many thousands of rpm. 900:1 gears are very fine-pitched and will cut into each other even more.
Which probably dictates a sealed planetary gearbox, over a worm drive.
The current maslow motors have an 8mm output shaft, not 6mm. I don’t know what
the input is as I’ve never taken them apart.
lookup a cyclodial drive, they work well at high ratios and cannot be
backdriven. Two stage ones work really well well to get high ratios.
900::1 is probably a little steep, how fast to the big hobby motors spin? (I
know you can get ones that have very high torque that spin slower, but they need
less gear reduction)
I was going by the 290:1 370 gearbox spec - all the ones Ive seen have 6mm input shafts.
Thats cool!
Do the mount holes also line up??? To mount the motor to the gearbox.
I have a little BLDC somewhere, , it then only needs an encoder…
somewhere between 3500 and 12000
I’m also wondering if there are also cheaper / less fancy looking BLDC motors.
I also looked at the industrial BLDC’s but they are as expensive as steppermotors and even more expensive…
The HobbyKing Donkey ST4010-820kv is $13, I would consider that pretty cheap?
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We’re getting back to some of the thoughts I had early on about how to build the machine 
Here’s the video I made about the design process before the kickstarter and if you look around 2:18 you can see a low KV brushless motor. I don’t think the 1:8 reduction that I was proposing would have ever worked and it could be back driven which would be a big issue, but that’s why I never actually built it and went with an all in one motor
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Maybe if we can find a combo of BLDC + wormgear + encoder at a competitive price, that this might work.
The speed of the BLDC high compared to brushed 555 or 755 brushed motors, no wearing brushes… Thats also a positive in the long run.
It would not hurt is we keep an open mind on this. Still since you already tried this route it seems a bit backwards to go again back to BLDC.
We are slowly catching up on all things Maslow. 
Much respect for all the groundwork @Bar!
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Maybe if we can find a combo of BLDC + wormgear + encoder at a competitive price, that this might work.
competitive to what? (don’t forget to include the driver board, ODrive is in the
$200 range)
The speed of the BLDC high compared to brushed 555 or 755 brushed motors, no wearing brushes… Thats also a positive in the long run.
It would not hurt is we keep an open mind on this. Still since you already tried this route it seems a bit backwards to go again back to BLDC.
he didn’t try that hard, he saw the complexity and went for something simpler.
driving a BLDC motor is really hard compared to driving a DC motor, you need to
switch three poles instead of two, and you need to switch them fast as well.
This means that you are going to need a lot more components to drive your BLDC
motor.
Now, if you are not looking for the cheapest machine, and are willing to spend
money to get higher performance, then shifting to a BLDC can be an interesting
thing to consider.
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The radio control guys have made a lot of cheap motors, controls, etc. Poke around hobbyking or one of those sites, pretty interesting. In the eyes bigger than stomach pile I’ve got the parts to make an ER11 spindle out of an 8mm shaft outrunner, think it’s from a design on buildlog.net but there’s a lot of discussion about it in several places
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That could be ineresting on a small Maslow
This approach can be interesting even on a large machine.
You could even power the motor with batteries (you need the weight on the sled
after all, right 
) and you could quite easily end up with a fully portable
maslow.
I’ve also got a few ER11 spindles around for similar purposes.
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Hello.
Can i change parameters and make calibration via UART from arduino board?
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Hey @ivan_films, welcome to the community. This thread is about using an ODrive motor controller, not for troubleshooting the standard controller.
Try creating a new thread for your question, you will be much more likely to get an answer.
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