Despite the best efforts of UPS to loose the package, the steppers got here today. Short quick evaluation - I'm impressed.
1) The break out board that goes to the LPT port on a PC (that I dismissed as useless early on) is quite complex. It appears to be opto isolated !!
2) The controllers seem to be well made and they can be mounted easily.
3) The motors are massive .... big heavy tall things (yes they are the same ones in the picture and no taller than they show on the spec sheet).
The detent torque on the motors is high enough that I suspect it will hold a fairly heavy print head up in the air with no power applied. They are at the "hard to turn with your fingers" level.
The motors are indeed round shaft / no flat as the drawings show.
Everything in the package is Wanti labeled. That goes for the ... 36V power supply as well. It's a MeanWell rip off supply. Part number is a S-350-36. That would suggest that a 350W supply is probably a good idea for one of these setups. It also suggests to me that the 50V rating on the controllers may be a bit optimistic. Not quite sure how / why I got the supply, I'll have to go back and look at the listing.
All connections are made via the same sort of screw down and plug in connectors used on the Ramps for the main supply input.
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Somehow the screws that were quite securely holding the top cover on managed to come loose .... I suspect my warranty is no longer valid.
The board inside is well made. It's conformably coated. The electrolytic caps are China product rather than Japanese. They show as being rated for 63V and 105C. That would suggest that the 50V may not be all that optimistic.
Power is via a switcher and then some linear regulation after that. The setup is opto's into a .... Atmel Mega ... into some logic and then a full discrete FET H bridge for each stepper. More or less, if the Mega on the Ramps can spit out pulses, I'd bet this thing can receive pulses. I doubt that the top end stepping speed on one is much higher than the top end speed on the other.
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I haven't hooked them up yet. The family seems to have some sort of holiday plans for the next couple days. It may be a bit before I can fire them up. At this point I'm happy with them.
1) The break out board that goes to the LPT port on a PC (that I dismissed as useless early on) is quite complex. It appears to be opto isolated !!
2) The controllers seem to be well made and they can be mounted easily.
3) The motors are massive .... big heavy tall things (yes they are the same ones in the picture and no taller than they show on the spec sheet).
The detent torque on the motors is high enough that I suspect it will hold a fairly heavy print head up in the air with no power applied. They are at the "hard to turn with your fingers" level.
The motors are indeed round shaft / no flat as the drawings show.
Everything in the package is Wanti labeled. That goes for the ... 36V power supply as well. It's a MeanWell rip off supply. Part number is a S-350-36. That would suggest that a 350W supply is probably a good idea for one of these setups. It also suggests to me that the 50V rating on the controllers may be a bit optimistic. Not quite sure how / why I got the supply, I'll have to go back and look at the listing.
All connections are made via the same sort of screw down and plug in connectors used on the Ramps for the main supply input.
-----
Somehow the screws that were quite securely holding the top cover on managed to come loose .... I suspect my warranty is no longer valid.
The board inside is well made. It's conformably coated. The electrolytic caps are China product rather than Japanese. They show as being rated for 63V and 105C. That would suggest that the 50V may not be all that optimistic.
Power is via a switcher and then some linear regulation after that. The setup is opto's into a .... Atmel Mega ... into some logic and then a full discrete FET H bridge for each stepper. More or less, if the Mega on the Ramps can spit out pulses, I'd bet this thing can receive pulses. I doubt that the top end stepping speed on one is much higher than the top end speed on the other.
------
I haven't hooked them up yet. The family seems to have some sort of holiday plans for the next couple days. It may be a bit before I can fire them up. At this point I'm happy with them.