{"product_id":"2-5a-bipolar-stepper-driver-with-micro-stepping-current-and-decay-control-arduino-compatible","title":"2.5A Bipolar Stepper Driver with Micro-Stepping, Current and Decay Control – Arduino Compatible","description":"\u003cp\u003eThis is an Arduino compatible board that contains an \u003cstrong\u003eAtmega328\u003c\/strong\u003e microcontroller and Bipolar Stepper Motor Driver chip \u003cstrong\u003eSTK682-010\u003c\/strong\u003e. This Hybrid IC from ON Semiconductor can deliver up to \u003cstrong\u003e2.5A\u003c\/strong\u003e current and it can have an input supply up to \u003cstrong\u003e32V DC\u003c\/strong\u003e. It has multiple micro-stepping options such as Full step, 1\/2th Step, 1\/4th Step, 1\/8th Step, 1\/16th Step, 1\/32th Step, 1\/64th Step, 1\/128th Step.  PR1 trimmer potentiometer is provided to set the decay, 3.5V Slow Decay, 1.1V to 3.1V Mixed Decay, 0.8V-1V Fast Decay, and PR2 Trimmer Potentiometer provided to set the output current. Chopping frequency set to \u003cstrong\u003e83.3 Khz\u003c\/strong\u003e using capacitor C5 100PF. Micro-Stepping can be set with the help of jumper J1, J2, J3. This board is by default enabled since the enable pin has a pull-up resistor, but you can provide a low signal to disable the motor driver chip. \u003cstrong\u003eAtmega328D\u003c\/strong\u003e provides Direction pulse, Step pulse, Enable control, etc. The IC has built-in automatic half current functions to reduce the vibrations \u0026amp; current while the motor is in static mode. It is important to use a heatsink on the motor driver chip. Refer to the micro-stepping table to set the micro-stepping. Board requires a Motor power supply as well logic supply 5Vdc.\u003c\/p\u003e\n\u003ch3\u003eArduino Programming\u003c\/h3\u003e\n\u003cp\u003eArduino code is provided to test the board. The user will be able to control stepper motor speed using a 10K potentiometer connected to \u003cstrong\u003eAnalog pin\u003c\/strong\u003e \u003cstrong\u003eA0\u003c\/strong\u003e using connector \u003cstrong\u003eU3\u003c\/strong\u003e. Users may write their own code to drive the motor as per requirements, micro-stepping is separate and independent from micro-controller. Only Pulse\/Clock input, Direction, enable pins are connected to Arduino hardware.\u003c\/p\u003e\n\u003ch3\u003eArduino Pins\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eDigital Pin D6: Enable STK682-010, Default this pin is High Using Pull-up Resistor R9, Pull Down this Pin to disable the motor driver\u003c\/li\u003e\n\u003cli\u003eDigital Pin D5: Clock\/Pulse STK682-010\u003c\/li\u003e\n\u003cli\u003eDigital Pin D10: Dir (Motor CCW\/CW Low or High) STK682-010, Default this Pin is High Using pullup Resistors R3\u003c\/li\u003e\n\u003cli\u003eAnalog Pin A1: Analog input, Potentiometer or Sensor Connection\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSupply Voltage Range 9-32V DC (Connector CN1)\u003c\/li\u003e\n\u003cli\u003eLogic Supply 5V DC (CN4 Pin 4=GND, Pin 5=5V DC Input)\u003c\/li\u003e\n\u003cli\u003eMotor Load 2.5A Continues (Connector CN2)\u003c\/li\u003e\n\u003cli\u003eJ1, J2, J3 Jumpers for Micro-Stepping\u003c\/li\u003e\n\u003cli\u003ePR2 Current Adjust Trimmer Potentiometer\u003c\/li\u003e\n\u003cli\u003ePR1 FDT Trimmer Pot to adjust Decay\u003c\/li\u003e\n\u003cli\u003eBuilt-In Automatic Half Current Maintenance energizing function\u003c\/li\u003e\n\u003cli\u003eBuilt-in Over Current Protection Circuit (Within IC)\u003c\/li\u003e\n\u003cli\u003eBuilt Thermal Shutdown Circuit (Within IC)\u003c\/li\u003e\n\u003cli\u003eOn-Board Power LED D1\u003c\/li\u003e\n\u003cli\u003ePCB Dimensions 57.94 x 46.67 mm\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"dotfry","offers":[{"title":"Default Title","offer_id":47246940405932,"sku":"M131","price":40.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0757\/6436\/7532\/files\/M131A.jpg?v=1789811446","url":"https:\/\/dotfry.com\/products\/2-5a-bipolar-stepper-driver-with-micro-stepping-current-and-decay-control-arduino-compatible","provider":"dotfry","version":"1.0","type":"link"}