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Running stepper with Arduino Uno and A4988: Less torque, random rotation, switch signal always high - Motors, Mechanics, Power and CNC - Arduino Forum
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AZDelivery CNC Shield V3.0 Expansion Board Bundle, 4PCS A4988 Stepper Motor Drivers with 4PCS Heatsink Kits compatible with Arduino, 3D Printer Including E-Book! : Amazon.co.uk: Business, Industry & Science
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Using A4988 motor driver with stepper motor turning on and off - Motors, Mechanics, Power and CNC - Arduino Forum
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