Just wanted to let you all know there is a new design, board layout, and kit coming out for the Linistepper (the smooth linear driver with higher speed active current regulation for medium to small, low cost, unipolar motors).

The new Linistepper Version 2 features a few small but important improvements:
  • PMinMO standard connections so you can mix and match with other break out boards and drivers
  • Screw terminals for the motor leads
  • Onboad mode selection (full, high torque half, low resonance 6th and 18th micro-stepping)
  • Network resistors for a lower component count and less soldering
  • Still open source, still your best bet for great performance from low cost motors. (Unipolar, 1.5 amps/phase, up to 35Volts)


Same great linear microstepping features:
  • Ultra smooth, low resonance operation in 6th and 18th over microstepping modes with analog ramping.
  • Active current regulation via the onboard PIC microcontroller (open source) and a tricky little feedback circuit for faster operation than the old style linear drivers.
  • High-Torque half stepping mode provides 28% more torque and less resonance when half stepping at high speeds.
  • Low cost "junk-box" component list for outstanding value. We order large quantities so if you don't have a PIC programmer or a fully stocked parts bin, we can get you a kit for less than you can order the parts from a distributor.


Now we have some good news and some bad news:

BAD NEWS: They aren't quite in stock yet and we are still working on the documentation. We expect to be done updating the web page, publishing the new layout and build instructions, in the next few days, and the shipment of kits is in the air as we speak.

GOOD NEWS: If you are willing to order the kits now, and wait a week or so for delivery, we are knocking $5 off the kit price. That makes a 3 axis system just $75 or $25 per axis!

Place your order at:
http://www.ecomorder.com/techref/ecomprice.asp?p=416015 BEFORE we get the kits in stock, and save! At that price, we are pretty close to loosing money, so there is a limit of 3 drivers per customer.

And... as if that weren't enough... there is a new open source design coming from Roman for a 3A/phase SLA7062 based microstepping driver. The web page with all the documentation should be up soon, and we will be offering a kit for price that is pretty close to the Linistepper.

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