Re: DRV8825 vs TMC2100 vs THB6128
QuoteAndrewBCN I don't have any of these new drivers but I assume you can adjust the current to the steppers. If so, what is the current you have set for your steppers? What was it previously set to...
View ArticleRe: DRV8825 vs TMC2100 vs THB6128
I believe the formula to calculate current is slightly different for the TMC2100 drivers, in this video they have Vref set @ 1.1V: [www.youtube.com] Also, did you configure them for spreadCycle mode...
View ArticleRe: DRV8825 vs TMC2100 vs THB6128
QuoteAndrewBCN I believe the formula to calculate current is slightly different for the TMC2100 drivers, in this video they have Vref set @ 1.1V: [www.youtube.com] Also, did you configure them for...
View ArticleRe: DRV8825 vs TMC2100 vs THB6128
Quotemdcompositi QuoteAndrewBCN I believe the formula to calculate current is slightly different for the TMC2100 drivers, in this video they have Vref set @ 1.1V: [www.youtube.com] Also, did you...
View ArticleBasics of Stepper Motor
Hi all, We are using stepper motor from sanyodenki (SH2863-5141) for one of our projects. Also we are using Stepper motor drive from US Digital (MD2S-P) [www.usdigital.com] If we see the motor...
View ArticleRe: Basics of Stepper Motor
Quotegenn If we see the motor datasheet its resistance is 1ohm and rated current is 4A, so that the consumed power is P =I2R = 16W. So if we power the driver with a 48V supply the motor is taking...
View ArticleRe: Basics of Stepper Motor
Quote The drive manufacturers says that the drive wont allow more than rated current to flow through the motor windings . Then where does this excess current flow? Contrar to popular belief, nothing...
View ArticleRe: DRV8825 vs TMC2100 vs THB6128
I read the page [www.micromo.com] but I am not entirely sure that I understand. Is the reduced torque only a problem for holding the given position (microstep) and for reverse moves? I mean if the sum...
View ArticleRe: DRV8825 vs TMC2100 vs THB6128
@LarsK Instead of hijacking this thread I suggest you create a new thread, where you can ask questions about microstepping and torque. :)o
View ArticleRe: DRV8825 vs TMC2100 vs THB6128
Hello Andrew, Read the original thread (it got side tracked a little down). This is very much a continuation of that. The answer to my question have a great deal of influence on how many microsteps it...
View ArticleRe: DRV8825 vs TMC2100 vs THB6128
Quotemdcompositi Hi guys, I've installed today on my printer drivers tmc2100 I have a corexy and as electronic I use an arduino mega 2560 with ramps 1.4 I installed the drivers only for x and y and I...
View ArticleRe: DRV8825 vs TMC2100 vs THB6128
Did anybody ever thought of adding capacitors at the motor voltage inputs of the driver modules? The capacitors that are already on the boards look very small to me, and I bet that they aren't low ESR...
View ArticleRe: DRV8825 vs TMC2100 vs THB6128
Quoteuhrheber Did anybody ever thought of adding capacitors at the motor voltage inputs of the driver modules? The capacitors that are already on the boards look very small to me, and I bet that they...
View ArticleDid anyone used linear hall sensors on BLDCs for position sensing?
I am searching for a suitable solution for using DC motors (actually BLDC) to create closed-loop position controls that could replace/improve over the steppers we use in most of our 3D printers. While...
View ArticleRe: Did anyone used linear hall sensors on BLDCs for position sensing?
Hi Misan, I read the paper that you linked to, and I can see a couple of major obstacles to bringing the price point of a brushless DC motor with closed loop positioning based on linear hall effect...
View ArticleRe: Did anyone used linear hall sensors on BLDCs for position sensing?
HI AndrewBCN, Good points, let me elaborate on them. QuoteAndrewBCN 1. The price of adding the many required linear hall effect sensors to any brushless DC motor assembly is not negligible. First,...
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Re: Did anyone used linear hall sensors on BLDCs for position sensing?
Hello Misan I have checked the all-in-one ClearPath brushless servo system and while I find the technology very impressive, their prices are stated to be around $250 for a NEMA 23 sized servo. :( I...
View ArticleRe: Did anyone used linear hall sensors on BLDCs for position sensing?
Hi AndrewBCN, Thank you for your kind words. I have tested three motors I think could be used. The cheapest one was $5 but it was a MABUCHI 370 brushed motor [www.mabuchi-motor.co.jp] with 448 CPR...
View ArticleRe: Did anyone used linear hall sensors on BLDCs for position sensing?
Misan, I found this on YouTube: [www.youtube.com] This AS5134 chip seems to integrate every component required and only needs a single 2-pole magnet rotating over the center of the chip to function,...
View ArticleRe: Did anyone used linear hall sensors on BLDCs for position sensing?
Good catch AndrewBCN, These chips cost around $4 each and they can provide an alternative to optical encoders. It is a cool technology slightly more expensive than optical but dust proof.
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