Bipolar Stepper Motor Driver, 50 Volt, 3 Amp, Microstep

Microstepping Bipolar Chopper Stepper Motor Driver Kit (55Vdc, 3 Amp)

The bare board and programmed AVR as included in this auction:

Note that you will need to obtain the rest of the parts to assemble the board such that it looks like this:

These additional parts cost approximately $45-55 are all readily available from DigiKey, Jameco, Future and other similar sources.  Complete parts list and other documentation on my website.

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Features

• Open Source - The schematic, parts list, and software are all free downloads!

• Now ROHS compliant.

• Hobbyist-friendly - No surface mount parts means allows this drive to be easily repaired!

• DMOS driver chips rated at 55V and 3 Amps.

• DIP Switch selectable modes of stepping:
  1. Full Step, Both Phases On
  2. Full Step, Wave Drive
  3. Half Step
  4. Quarter Step
  5. Sixth Step
  6. Eighth Step
  7. Tenth Step
  8. Twelfth Step

• Optically isolated step, direction, & enable signals.
  These signals are ground referenced so no +5VDC is required - hook directly to your parallel port.
  

• Selectable automatic idle current reduction to reduce motor heating.
  Motor current can be reduced if no steps are received for 3 seconds. Oscilloscope Image

• DIP switch selectable motor test mode.
  Allows for testing of motor/drive/wiring without an externally generated step signal.

• Motor braking can be activated when drive is disabled.
  Alternatively, motor braking can also be disabled such that the motor will freewheel when drive is disabled.

• Motor current is adjustable by two potentiometers. (One for each motor phase)

• Removable screw terminals for all wiring connections.

• Status LED flashes during normal operation to let the user know the microcontroller is running.
  Illuminates solid during a fault condition.

• Quality double-sided printed circuit board with ground plane and silkscreen legend.
  Board size is 3.25" x 4.30" with mounting holes for #6 screws in each corner.

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Documentation

For schematics, parts list, design notes, AVR firmware and etc. please visit this website.

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Shipping

Please use shipping calculator to determine charges.

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Let me know what you want.  I have plenty of items in stock and will happy to list completely assembled and tested boards, parts kits, and/or larger quantities.

Thanks for looking.