Gene, I am pretty sure they have a 4A and a higher version of it, not only 2amp at 40VDC....
I never used them myself, but I here they where cheap and pretty reliable. This guy didn't put them on his 34HS9802 (Nema 42), but in a box with some additional cooling. Ries On Jul 30, 2011, at 6:15 PM, gene heskett wrote: > On Saturday, July 30, 2011 06:41:18 PM R. van Twisk did opine: > >> Gene, >> >> I don't have experience with the G540, I am using the Vampire series >> which are a great set of drivers but they are not faultless!! But there >> return and support on broken drivers are very good. >> >> I did hear some good news from the UIM 2400xx series www.uirobot.com >> I know a couple of guys using them on there mechmates without issues. >> >> Ries >> > That looks like a backwards step, only 2 amps, generally designed for > nema 17 motors I assume. > > I just found this one, doesn't look too bad. > > <http://cgi.ebay.com/4-2A-2M542-CNC-Stepper-Motor-Driver-controller-24V-48V-/120755603538?pt=LH_DefaultDomain_0&hash=item1c1d984852> > > Upto 64 microsteps, current turndown when quiet. I am tempted to order > 5 so I have a spare, at 10 bucks more than the G540. 4.2 amps, 48 volt > maximum. > > And I just did, but it will be about 2 weeks free delivery from China. > > Or, speak of el-cheapo, 70 bucks for what looks like that's about what > its worth: > > <http://cgi.ebay.com/4-Axis-TB6560-CNC-Stepper-Motor-Driver-Controller-Board-/130532324742?pt=LH_DefaultDomain_0&hash=item1e64553586> > > Nice fan cooled heat sink, but that chip doesn't impress me too much. > And its not a step up, 3 amps 36 volts, about the same as the Allegro > A3977 but all 4 in one package. The 2M542 is a step up, allowing me > to raise the motor voltage if I am so inclined. > > Cheers, gene > -- > "There are four boxes to be used in defense of liberty: > soap, ballot, jury, and ammo. Please use in that order." > -Ed Howdershelt (Author) > Rune's Rule: > If you don't care where you are, you ain't lost. > > ------------------------------------------------------------------------------ > Got Input? Slashdot Needs You. > Take our quick survey online. Come on, we don't ask for help often. > Plus, you'll get a chance to win $100 to spend on ThinkGeek. > http://p.sf.net/sfu/slashdot-survey > _______________________________________________ > Emc-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/emc-users ------------------------------------------------------------------------------ Got Input? Slashdot Needs You. Take our quick survey online. Come on, we don't ask for help often. Plus, you'll get a chance to win $100 to spend on ThinkGeek. http://p.sf.net/sfu/slashdot-survey _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
