pololu board
thingiverse
The Pololu stepper board is designed for the RepRap, featuring power and end stop inputs/outputs. It allows microstepping adjustment via jumpers. Recently, a pull-down resistor was added to enhance performance. Check out my blog post for more details: http://mike-mack.blogspot.com/2010/07/another-board-it-was-slow-day.html
Download Model from thingiverse
With this file you will be able to print pololu board with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on pololu board.