I don't think you could do any better than Pololu's A4988 drivers at $9.95 each. Or for another 4 bucks you can get 1/2 amp more with their DRV8825 model.
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ "Anyone who believes exponential growth can go on forever in a finite world is either a madman or an economist." -Kenneth Boulding, economist “How unfortunate that the Earth’s first intelligent social animal is a tribal carnivore” -E.O. Wilson, sociobiologist >________________________________ > From: Gregg Eshelman <[email protected]> >To: [email protected] >Sent: Wednesday, September 11, 2013 7:14 PM >Subject: [Emc-users] I'm going to build something small, need a cheap >stepper driver. > > >Bought someone's failed hot wire foam cutter project (it used full extension, >ball bearing drawer slides) for $20 to get the four NEMA 23, 85 oz-in dual >shaft motors. > >Got the motors off, going to put the drawer slides on the yard sale tomorrow. > >Any reccomends on a really inexpensive way to drive these 6 wire motors? I >have a bunch of 40/40 T-slot extrusion ($2.49 foot at a surplus company) with >connectors that fit into the ends *and* inside corner brackets so it'll make a >very rigid frame. > >I am thinking about a 3D printer, but I'll want the thing built very rigid. I >recently saw a Solidoodle 3 in action. Not much impressed! The build platform >is only supported on one side and I could see it wiggle, which appeared to >harmonically combine with the motor motion to produce a visible waviness to >the edges of every layer. > >------------------------------------------------------------------------------ >How ServiceNow helps IT people transform IT departments: >1. Consolidate legacy IT systems to a single system of record for IT >2. Standardize and globalize service processes across IT >3. Implement zero-touch automation to replace manual, redundant tasks >http://pubads.g.doubleclick.net/gampad/clk?id=51271111&iu=/4140/ostg.clktrk >_______________________________________________ >Emc-users mailing list >[email protected] >https://lists.sourceforge.net/lists/listinfo/emc-users > > > ------------------------------------------------------------------------------ How ServiceNow helps IT people transform IT departments: 1. Consolidate legacy IT systems to a single system of record for IT 2. Standardize and globalize service processes across IT 3. Implement zero-touch automation to replace manual, redundant tasks http://pubads.g.doubleclick.net/gampad/clk?id=51271111&iu=/4140/ostg.clktrk _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
