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Stepper Motor Microstep Driver

The IMT 901 IC from the German firm Nanotec makes it easy to build a stepper motor controller. You can find a data sheet with complete technical specifications at the Nanotec site (http://nanotec.de).The circuit diagram can be kept very simple. In the application shown here, the IC is controlled manually, but it can naturally also be controlled by a microcontroller or PC. Signals M1 and M2 select the number of current steps for each mechanical step (see Table 1).
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