Re: Estimating stepper torque
Hi Traumflug, That seems to be the case till you reach corner speed, according to [www.geckodrive.com] But it is unclear to me whether we are passing that limit or not on our machines. misan
View ArticleRe: Speed-dependent acceleration
QuotemisanTrouble is that stepper's torque depends on the speed of rotation (rate of steps). The faster the speed the lower the torque. True only with old style, not constant current stepper drivers....
View ArticleRe: Estimating stepper torque
Calculate it :) You have a rough steps/mm value, you have a speed expectation, you know the pulley's diameter, so you can calculate RPM at maximum speed.
View ArticleRe: Speed-dependent acceleration
Hi Traumflug, But what to do if you want to go beyond the constant torque zone? (Please note that torque is not even constant but higher than holding-torque for a while [www.ti.com] ) As the speed...
View ArticleRe: Speed-dependent acceleration
The constant torque zone is when the current in the coil is limited by the pot on the driver, meaning its working how its supposed to be. Now in an inductor, when the voltage is applied the current...
View ArticleRe: Specs for Stepper Motors?
On the same topic - the voltage for the steppers is not mentioned in many of the pages of the Prusa i3 builds. The Ramps 1.4 circuit diagram shows 12V supply on the drivers, but many kits I have found...
View ArticleRe: Specs for Stepper Motors?
On label the physical properties are the coil resistance and max current. The voltage is supposed to be a relation of these two in a context where the motor would be supplied with dc voltage. But its...
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Re: Stepper motor breather hole.
Looks like you can seal the openings on a stepper motor to make them dust, and waterproof. Unless there is some thing else that I'm not aware of that make a wet/dry stepper motor different.
View ArticleRe: Stepper motor breather hole.
Haha yes i like that, its quite extreme :) Nice one :)
View ArticleRe: internal rewire 5 wire unipolar to 4, 6 or 8 wire bi-polar
Hi all, I find all the above verry interesting, I have a small five wire stepper with no markings, I would like to re wire it as a four wire, the diagrams above though clear to understand using four...
View ArticleLooking for sub 50gram standard stepper ?
Hy guy`s I`m already printing very successfull with my Nema14 geared extruders (+400mm/s) but i want to make the extruder even more lightweight without switching to a bowden extruder. i already have a...
View ArticleWill this stepper work with ramps1.4? (3 phase)
Hi all, I've got a nema 23 motor, 4.32V 1.8A Japan Servo KT56JM4-552 Here's the specs. [paroco.hihosting.hinet.net] The motor is 3 phase, is it possible to get this to work with ramps1.4? Thanks, Vaughan
View ArticleRe: Will this stepper work with ramps1.4? (3 phase)
The pololus are stepper driver on ramps and their outputs are for 2 coils only, so wont work. You would need to remove or not install a pololu driver, use the step/dir/en signals from that header, and...
View ArticleRe: Will this stepper work with ramps1.4? (3 phase)
Thanks for the help NOOB....ended up ordering a nema 17 2 phase..to be like the cool kids
View Articleone driver must go down :( help
i have this problem with drivers at first my printer work couple times and suddenly one of the drivers gets hot (the extruder driver ) when i connect it and does not work i get another one and tried...
View ArticleRe: one driver must go down :( help
You have put same post in 100 locations :( And i dont understand what you are saying either. Imo try find your country Reprap User Group and try post there in your native language, perhaps would be...
View ArticleRe: one driver must go down :( help
QuoteNoobMan You have put same post in 100 locations :( And i dont understand what you are saying either. Imo try find your country Reprap User Group and try post there in your native language,...
View ArticleStepper motor issue
Hi all :) so i am building a 3d printer of my own. So far i have Sanguinololu 1.3a and extruder with 1 stepper motor. I think i programmed the chip on the board properly. When i test the heat bed and...
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