Little Step-U Motor Controller


These are for controlling Unipolar Stepper Motors. I have just a couple of these that are new, old stock (NOS). See description below for complete product details.

2 in stock

SKU: SC00103 Category: Tags: ,


Using an intelligent module allows the host system to concentrate on the task at hand while the Little Step-U performs all calculations and operation of the motor. The desired operating speed, ramp time and drive mode can be configured once and then a single command used as required, to move to fixed or relative positions. While the motor is in motion, a BUSY output is active and the movement can be optionally interrupted by one of the two external inputs.

Key Features:

  • Full step, half step and wave drive modes
  • 1-5,000 steps per second
  • Inbuilt speed ramp (0.1-20.0 seconds)
  • Simple serial commands (TTL interface)
  • Separate power input for motor and logic
  • Suitable for direct and L/R operation in all modes
  • On board clamping diodes
  • Current position register (+/-100,000,000)
  • Zero position and user marker registers
  • Absolute & Relative movement commands
  • Busy output
  • Two inputs suitable for optical stops
  • Slave mode using inputs for STEP & DIR
  • Stop with motor coils on or off
  • Power Requirements: 4.5 to 5.5 VDC
  • Communication: Serial
  • Dimensions: 1.96 x 0.98 x 0.15 in (50 x 25 x 4 mm)
  • Operating Temperature: +32 to +158 °F (0 to +70 °C

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