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· Stepper Motors for Custom made Ultimaker Original
I'm not a stepper expert. This is really not my expertise. I am an electrical engineer but specifications for these things is complex. I'm pretty sure any of those steppers would work. The 1.8 degrees is not critical (200 steps per rotation). You could do double or half that and all you really have to do is change the configuration.h file to setup the proper value for steps/mm. However if you have too many steps then you can't go as fast. With the current design the XY steppers can only go up to a little over 300mm/sec which is much faster than anyone would want to print at anyway. In other words arduino can put out up to exactly 40,000 steps per second and no faster.
I wouldn't worry too much about voltage specs. Steppers are tough as hell. The current specification I would worry a bit - higher current implies more heating at the stepper driver and those can burn out. Although if you burn one out they are very cheap - around 10€ or $10 USD. But the steppers themselves should be fine. My steppers get very hot - sometimes around 70C, yet they work fine.
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gr5 2,224
I'm not a stepper expert. This is really not my expertise. I am an electrical engineer but specifications for these things is complex. I'm pretty sure any of those steppers would work. The 1.8 degrees is not critical (200 steps per rotation). You could do double or half that and all you really have to do is change the configuration.h file to setup the proper value for steps/mm. However if you have too many steps then you can't go as fast. With the current design the XY steppers can only go up to a little over 300mm/sec which is much faster than anyone would want to print at anyway. In other words arduino can put out up to exactly 40,000 steps per second and no faster.
I wouldn't worry too much about voltage specs. Steppers are tough as hell. The current specification I would worry a bit - higher current implies more heating at the stepper driver and those can burn out. Although if you burn one out they are very cheap - around 10€ or $10 USD. But the steppers themselves should be fine. My steppers get very hot - sometimes around 70C, yet they work fine.
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