•  
  •  

Super simple stepper motor controller

The circuit shown above can be used to control a unipolar stepper motor which has FOUR coils (I’ve swiped it off an old fax machine). The above circuit can be for a motor current of up to about 500mA per winding with suitable heat sinks for the SL100. For higher currents power transistors like 2N3055 can be used as darlington pair along with SL100. The diodes are used to protect the transistor from transients.

Activating sequence:-

Inputs

 

Coils Energised

D0

D1

0

0

A,B

0

1

B,C

1

0

C,D

1

1

D,A

To reverse the motor just reverse the above sequence viz. 11,10,01,00.

Alternately a 2bit UP/DOWN counter can also be used to control the direction , and a 555 multi-vibrator can be used to control the speed

If there are any problems please contact webmaster@electronic-circuits-diagrams.com

Please share & like

NEW Parker Compumotor OEMZL6104 stepper Microstepping Drive / Controller
$1750.0 NEW Parker Compumotor OEMZL6104 stepper Microstepping Drive / Controller picture
NEW Parker Compumotor GEMINI GT6-L8 stepper Drive / Controller
$1695.0 NEW Parker Compumotor GEMINI GT6-L8 stepper Drive / Controller picture
LOT Parker Compumotor 6K2 2-AXIS Servo Stepper Controller 6K2 ,OMRON S82K-10024
$1199.0 LOT  Parker Compumotor 6K2 2-AXIS Servo Stepper Controller 6K2 ,OMRON S82K-10024 picture
AMRAY 124-002 92011 PC 16V STEPPER MOTOR DRIVE 800-2722
$999.0 AMRAY 124-002 92011 PC 16V STEPPER MOTOR DRIVE 800-2722 picture
Parker Compumotor OEMZL6104 stepper Microstepping Drive / Controller | EXCELLENT
$895.0 Parker Compumotor OEMZL6104 stepper Microstepping Drive / Controller | EXCELLENT picture