Re: Azteeg X3 pro and stepper motor questions
Does anyone know how to use the DC motor and encoder with a reprap type board?
View ArticleRe: Unusual stepper ratings - vref settings for new Melzi
Yes I've used that plenty of times now cheers! Ok, so the latest is that I've tried again using the Marlin firmware with the device defined as a Mendel. It behaves strangely with this. 'most' of the...
View ArticleRe: Azteeg X3 pro and stepper motor questions
DC servos have typically much higher torque than steppers, and now a dc servo with a gearbox, that will be hard to replace with a stepper at comparable dynamic torque, you would have to go much much...
View ArticleRe: Unusual stepper ratings - vref settings for new Melzi
Make sure that you define the correct motherboard and it has correct pinout in a file called like pins.h or something like that. Perhaps the poor behaviour is because some pins are wrong, just...
View ArticleRe: Unusual stepper ratings - vref settings for new Melzi
Thanks - the board is right, it's set as 62 which is the Melzi, but I'm not sure about the pins thing in all honesty. I'll check what is set in that file but I've no idea what it should be so I'll...
View ArticleRe: Unusual stepper ratings - vref settings for new Melzi
Here's the pins file for the marlin firmware that's on currently. I've no idea if it's right or not though sorry! [dl.dropboxusercontent.com]
View ArticleRe: Unusual stepper ratings - vref settings for new Melzi
I think in that file 62 is sanguinololu and then melzi is 63 instead. The uC has a pin numbering scheme. If you open the pcb source (the source file in which the pcb was made), that will show...
View ArticleRe: Azteeg X3 pro and stepper motor questions
The phrase that comes to mind: Well if it were easy, everyone would do it! I did find the motor on the Pittman site. Its a brushless DC that runs up to 6000 rpm, with 30-50 oz/in of torque. When...
View ArticleRe: Stepper motors vibration with RUMBA
Hi NoobMan, I have seen the posts and the noise is different, it's not patterned it's just the normal sound but multiplied by 4, hehehe. It's much more appreciable when I rise the drivers to 0,5V that...
View ArticleRe: Stucked steppers. Anyone saw something similar before?
Thank you NoobMan for your reply! But I determined that not just the drivers, but the motors are also in good condition. Because as i mentioned Quoteon the "Z" wiriring both of them (the "Z" and the...
View ArticleRe: Stepper motors vibration with RUMBA
Then maybe values of Rsense, the sense resistors, are different between the drivers under comparison, that would make the relations vref to current different and then 0.5v has different meanings for...
View ArticleRe: Stucked steppers. Anyone saw something similar before?
Oh i see, my bad. Then both drivers and the motors are good, just they dont work for X axis. That could be because of step/dir line, need to identify on which uC pin number these start and where end...
View ArticleRe: Azteeg X3 pro and stepper motor questions
Huh, what i said in post no. 2 is that i dunno of any firmware that works with servos. I suppose it could be done, just i dunno of any, but have not looked for that either, so check it. On the other...
View ArticleRe: Stepper motors vibration with RUMBA
NoobMan, Thanks again for your help, could you be more specific? I don't know what do you mean by Rsense and PFD... are them in the RUMBA board, drivers or any other component? sorry but I don't know...
View ArticleRe: Stucked steppers. Anyone saw something similar before?
Check the pins.h file with pins definition for the motherboard defined in config.h and write down the numbers of Xstep and Xdir and Xenable. Download and open the source files for the electronics of...
View ArticleRe: Stepper motors vibration with RUMBA
All stepper drivers have some resistors, sinking the current from motor coils into ground. Because the coil current passes through them, then a voltage appears across the sense resistors, which the...
View ArticleRe: Stepper motors vibration with RUMBA
Thanks again, I'll try it out. As far as I understand you think the vibration/stuttering is due to drivers, doen't it?
View ArticleRe: Stepper motors vibration with RUMBA
Yes that is what was going for, but you have to keep in mind, i am rather guessing, its hard both to describe or try to understand issues on forum, sometimes descriptions depend just on how one...
View ArticleRe: Stepper motors vibration with RUMBA
Yes, I totally agree, thanks again for your help, I'll see if I'm able to cross that resistance without damaging the drivers, hehehe.
View ArticleRe: RAMPS for BeagleBone
QuoteDougl Quotemodmaker Hmm, I'm curious to hear what you have to say about EU products... Please share your thoughts with us. -- Bas oops, I didn't mean it the way it might have been taken. I know...
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