Re: Camtronics and Sanyo-Denki Review

Yes Mike,

That was a good review. I'm trying to decide which to get for my next
CNC efforts. The 180 oz/in steppers from Sanyo-Denki, or Sherline's 134
oz/in for 1/2 the price! Both look good! I intend to use about 35v
from a linear supply. Lotts of old 24v regulated supplies over here at
Weird Stuff, even the ones that don't work usually have OK transformers,
rectifiers and filters. Strip out the regulator boards, maybe adjust
the taps, and I've got all the supplies I need! It seems that you do
have to push the 35v limit to get the max out of a driver/motor. I was
getting poor results out of a nema 34 motor rotating a Yagi beam
antenna, until I cranked the voltage up. Then the acceleration and speed
were as the controller (CY525) promised.

Alan

Randy Gordon-Gilmore wrote:

>
> At 07:57 PM 11/8/00 -0800, Mike wrote:
>
> >I've recently tested the new 2amp Camtronics (
> >http://www.seanet.com/~dmauch/ ) controller and am quite happy with
> [snip]
> >145oz system. With a 24 volt power supply, it rivals their servo system
> in
> >speed.
>
> Thanks for the great and informative post, Mike! Now I'm drooling. I've
> got Dan's 2A board and three Sherline 110/134 oz-in motors and a 24V, 8A
> power supply (switcher) from Marlin P. Jones ( http://www.mpja.com ) on
> order for my Sherline mill.
>
> I'll plan on providing a heatsink as you suggest. Have you built a duct
> around your board/heatsink, or are you just blowing air onto the heatsink?
>
> Best regards,
>
> Randy
>