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Italian documentation

Step motors driver

Into the left connector the microcontroller send data input to drive motors.

This circuit consists of two identical parts: one for each motor.

You can think each part divided into two sections: logic and power.

The logic part receive data from microcontroller. The power drivers, mounted under the board with a big dissipator, are connected directly to the motors.

The motors has a step of 1,8° and an electrical input of 0.3A.

Electric sheet

Printed circuit board

COMPONENTS:

R1=R2=R3=R4= 0.5 ohm - 1 W
R5= 22 Kohm - 1/4 W
R6= 47 Kohm - 1/4 W
R7= 10 Kohm - 1/4 W
C1=C2= 220 uF - 50 V - electrolitic
C3= 3.3 nF - 63 V - polyester
C4=C5=C6=C7=C8=C9= 0.1 uF - 63 V - polyester
D1 --> D16= BYV27
IC1=IC3= L297
IC2=IC4= L298
MSX=MDX= step motor - 1.8° - 8.5V
MORS1= 6 pole connector
2 pole connectors (4x)

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