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74hc595 + uln2803 + unipolar stepper issue [SOLVED] - Motors, Mechanics, Power and CNC - Arduino Forum
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Source DRV-2803 8CH 50V 500mA Darlington Arrays Step Motor Relay LED Electromagnet Driver ULN2803 on m.alibaba.com
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ULN2803: 8 Channel Darlington Driver (Solenoid/Unipolar Stepper) [ULN2803A] : ID 970 : $3.95 : Adafruit Industries, Unique & fun DIY electronics and kits
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