{"product_id":"a4988-stepper-motor-driver-module-with-heatsink","title":"A4988 Stepper Motor Driver Module with Heatsink 1\/16 Microstepping 3D Printer CNC","description":"\u003cp\u003eThe A4988 Stepper Motor Driver Module is a high-performance compact carrier board designed to drive bipolar stepper motors in full, half, quarter, eighth, and sixteenth-step modes. The gold standard for DIY 3D printers (RepRap, Prusa i3), desktop CNC routers, and custom robotics, it simplifies control to just two pins from your microcontroller — STEP and DIR — thanks to its built-in translator. Each module includes a custom aluminium heatsink with pre-applied thermal adhesive tape for optimal thermal performance during continuous operation.\u003c\/p\u003e\u003cp\u003eAn onboard potentiometer allows precise current limiting to match your motor’s rated specs, while built-in protection circuits guard against thermal shutdown, under-voltage lockout (UVLO), crossover-current, and ground faults.\u003c\/p\u003e\u003ch3\u003eKey Specifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMotor Supply Voltage (VMOT):\u003c\/strong\u003e 8V to 35V DC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLogic Voltage (VDD):\u003c\/strong\u003e 3.3V to 5.5V DC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutput Current:\u003c\/strong\u003e 1A per phase continuous (up to 2A with heatsink and active airflow)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMicrostep Resolutions:\u003c\/strong\u003e Full, 1\/2, 1\/4, 1\/8, 1\/16\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eControl Pins:\u003c\/strong\u003e STEP + DIR (plus MS1, MS2, MS3 for microstepping selection)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProtection:\u003c\/strong\u003e Thermal shutdown, UVLO, crossover-current, ground fault\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 20 × 15 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eForm Factor:\u003c\/strong\u003e 16-pin DIP (compatible with RAMPS 1.4, CNC shields, breadboards)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003ePinout Reference\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eVMOT:\u003c\/strong\u003e Motor power supply (8–35V external PSU)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGND (Motor):\u003c\/strong\u003e Motor power ground\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVDD:\u003c\/strong\u003e Logic power (3.3V or 5V from MCU)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGND (Logic):\u003c\/strong\u003e Logic ground (MCU GND)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1A, 1B, 2A, 2B:\u003c\/strong\u003e Bipolar stepper motor phase wires (e.g., NEMA 17)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSTEP:\u003c\/strong\u003e Step pulse input from MCU digital pin\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDIR:\u003c\/strong\u003e Direction control from MCU digital pin\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eImportant:\u003c\/strong\u003e Always connect a 100µF electrolytic capacitor across VMOT and GND to prevent voltage spikes from damaging the driver IC.\u003c\/p\u003e\u003ch3\u003eApplications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eFDM 3D printers (RepRap, Prusa i3, RAMPS 1.4-based systems) for precise NEMA 17 motor control\u003c\/li\u003e\n\u003cli\u003eDesktop CNC routers and laser engravers for smooth axis movement\u003c\/li\u003e\n\u003cli\u003eArduino, ESP32, and Raspberry Pi robotics projects requiring step and direction control\u003c\/li\u003e\n\u003cli\u003eAutomated camera sliders, telescope mounts, and precision positioning systems\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003ePackage Includes\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e1 x A4988 Stepper Motor Driver Module\u003c\/li\u003e\n\u003cli\u003e1 x Anodised Aluminium Heatsink\u003c\/li\u003e\n\u003cli\u003e1 x Pre-applied Thermal Conductive Adhesive Tape\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cem\u003e\u003cstrong\u003eNote: Image is for representation purpose only.\u003c\/strong\u003e\u003c\/em\u003e\u003c\/p\u003e","brand":"Allegro MicroSystems","offers":[{"title":"Default Title","offer_id":47889423040689,"sku":"CC-001270","price":69.88,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0707\/0937\/9249\/files\/777_copy_2.png?v=1788429948","url":"https:\/\/circuitcomps.com\/products\/a4988-stepper-motor-driver-module-with-heatsink","provider":"Circuitcomps","version":"1.0","type":"link"}