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Stepper motor controller board version 1 (el cheapo)

A simple and cheap L298 based stepper motor controller. The phases are driven by 4 outputs from the PC parallel port/Mega8.
The mega8 controls the 2 phases of the stepper motor using 4 outputs. The mega8 receives commands for the PC over the serial port and converts them into pulses.
The bipolar motor should be alot stronger than the unipolar motor I used to test. Lets see....

Based on afew quick tests the bipolar motors are alot stronger than the unipolar motors I been using to test. The bipolars are slower but they have 200steps per rotation in fullstep mode and 400 in halfstep.