This page documents various stepping motor controllers built in EDF over the years.

New Super-K Power Box

This box is designed to be driven by the Hytec 2256 VME module, or any other source of step/direction pulses

• Hytec_Notes
• Schematic ​PDF ​ExpressPCB
• Stepping_Motor_Design_notes
• Finished Layout 6/30/06

​ExpressPCB

• ​StepMotor_Nov07a.zip Updated CPLD design which de-energizes motor when not stepping
  • ​step_cpld.zip
• SuperK_Box_Rev2
• ​Project1.zip project for testing stepping motors from PC parallel port. See Visual_Basic_Stepping_Motor_Notes

Old Power Box for MACRO/Super-K

This is a Bud box with a 12V power supply, a PCB and 3 connectors (DB15, DB25 and 20 pin header). It provides power switching electronics for a 5V motor.

• ​PCB Schematic

partly-legible original! Component references may not be 100% correct.

• ​ExpressPCB file (no PCB layout done)

Commercial Modules

• ​Hytec 2256 step/direction outputs for 4 motors. No power drive electronics. ​User Manual

El-Batanouny Lab

Three-motor control in rack-mount box. Uses 3 "power box" boards, wired to a DB-25 connector on the rear panel.

• ​Documentation
  • Revised 10 Feb 2006

Control Basics

The Airpac motors we have lots of from a surplus lot are configured like this:

:​http://joule.bu.edu/~hazen/SteppingMotors/stepper1.gif

This is the standard step sequence:

	A	B	C	D
1	ON	-	-	ON
2	ON	-	ON	-
3	-	ON	ON	-
4	-	ON	-	ON

Other Links

• ​Jones on Stepping Motors
  • Suggest L298 and LMD18200 chips (Digi-Key has both)