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             Electronics














             Stepper Motor Driver and
             Computer Interface Boards


             This chapter deals with the design and construction of the elec-
             tronics required for controlling stepper motors using a computer
             and Keam software. The requirements for the drivers are based on
             the step-syn motor purchased in the previous chapter from the
             surplus department of Princess Auto (see Figure 2.2).

                                                                             Figure 2.1
                                                                             The finished boards.















             In addition to these surplus motors, I also bought three new
             motors from Pacific Scientific, also mentioned in the previous
             chapter (see Figure 2.3).


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