{"product_id":"pololu-3551-micro-gripper-kit-with-position-feedback-servo","title":"Pololu 3551 Micro Gripper Kit with Position Feedback Servo","description":"\u003cmeta name=\"description\" content=\"Buy Pololu 3551 Micro Gripper Kit with Position Feedback Servo online in India at best price from The Engineer Store, Bengaluru. Authentic product, 7-day warranty on manufacturing defects, fast delivery across India.\"\u003e\n\n\u003ch1\u003ePololu 3551 Micro Gripper Kit with Position Feedback Servo\u003c\/h1\u003e\n\n\u003cp\u003eThe Pololu 3551 Micro Gripper Kit is a compact robotic gripper system featuring integrated position feedback servo control, designed for precision manipulation in constrained spaces. Roboticists, automation engineers, and research professionals utilize this kit to develop dexterous robotic arms, pick-and-place systems, and collaborative robot end-effectors with real-time grip force monitoring. This product solves the critical challenge of achieving repeatable, feedback-controlled grasping in applications where space is limited and precise object manipulation is essential.\u003c\/p\u003e\n\n\u003ch2\u003eProduct Overview\u003c\/h2\u003e\n\u003cp\u003eThe Pololu 3551 Micro Gripper Kit integrates a high-torque servo motor with position feedback circuitry, enabling closed-loop gripper control with microsecond-level response times. The servo mechanism uses a precision gear train to convert rotational motion into linear gripper jaw movement, with integrated potentiometric feedback providing real-time position data to the control electronics. The kit includes pre-assembled gripper jaws with textured contact surfaces, a dedicated servo driver module with PWM input compatibility, and comprehensive firmware supporting both open-loop and closed-loop operation modes.\u003c\/p\u003e\n\n\u003cp\u003eWhat distinguishes the Pololu 3551 is its exceptionally compact form factor measuring just 45mm x 35mm x 28mm, making it ideal for robotic hands and confined manipulation environments. The position feedback servo operates at 4.8-6V with a maximum grip force of 2.5kg, delivering 60-degree jaw opening range with 0.1mm positional accuracy. The integrated feedback system eliminates the need for external sensors, reducing system complexity and cost while improving reliability in production robotics, surgical instrument prototyping, and educational robotics projects.\u003c\/p\u003e\n\n\u003ch2\u003eKey Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpecification\u003c\/td\u003e\n\u003ctd\u003eDetails\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eMicro Gripper Kit with Position Feedback Servo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003ePololu Robotics and Electronics\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eOriginal\/Authentic\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e7 days on manufacturing defects\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShipping\u003c\/td\u003e\n\u003ctd\u003e1-5 days from Bengaluru\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDelivery\u003c\/td\u003e\n\u003ctd\u003e7-8 days across India\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupport\u003c\/td\u003e\n\u003ctd\u003e24\/7 via Email and WhatsApp\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Voltage\u003c\/td\u003e\n\u003ctd\u003e4.8V to 6V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Grip Force\u003c\/td\u003e\n\u003ctd\u003e2.5 kilograms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eJaw Opening Range\u003c\/td\u003e\n\u003ctd\u003e0 to 60 degrees\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePositional Accuracy\u003c\/td\u003e\n\u003ctd\u003e0.1 millimeters\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eServo Speed\u003c\/td\u003e\n\u003ctd\u003e0.15 seconds per 60 degrees\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFeedback Type\u003c\/td\u003e\n\u003ctd\u003eIntegrated potentiometric position sensor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e45mm x 35mm x 28mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e65 grams\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eControl Interface\u003c\/td\u003e\n\u003ctd\u003ePWM signal input compatible with microcontrollers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eIntegrated Position Feedback Servo with closed-loop control enabling real-time grip force monitoring and adaptive grasping strategies for fragile objects\u003c\/li\u003e\n\u003cli\u003eCompact Micro Form Factor at 45x35x28mm allows integration into robotic hands, surgical instruments, and space-constrained manipulation systems without bulk\u003c\/li\u003e\n\u003cli\u003eHigh Grip Force of 2.5kg combined with 60-degree jaw opening provides versatile object manipulation from delicate electronics to industrial components\u003c\/li\u003e\n\u003cli\u003ePrecision Potentiometric Feedback delivers 0.1mm positional accuracy with microsecond response times, critical for repeatable pick-and-place operations\u003c\/li\u003e\n\u003cli\u003ePWM Control Interface ensures seamless integration with Arduino, Raspberry Pi, and industrial PLC systems using standard servo control protocols\u003c\/li\u003e\n\u003cli\u003ePre-assembled Gripper Jaws with textured contact surfaces minimize object slippage while protecting delicate surfaces during manipulation\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eApplications and Use Cases\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eCollaborative Robot End-Effectors where position feedback enables force-limiting grasping modes to ensure human-safe interaction in shared workspaces\u003c\/li\u003e\n\u003cli\u003eSurgical and Medical Robotics requiring millimeter-level precision and feedback control for minimally invasive instrument manipulation and tissue handling\u003c\/li\u003e\n\u003cli\u003eEducational Robotics Projects and university research programs developing multi-fingered robotic hands with feedback-controlled dexterous manipulation capabilities\u003c\/li\u003e\n\u003cli\u003eAutomated Assembly and Pick-and-Place Systems for electronics manufacturing where precise object positioning and grip verification prevent product damage and assembly errors\u003c\/li\u003e\n\u003cli\u003eDrone Payload Manipulation where the lightweight 65-gram gripper enables aerial robots to grasp, transport, and release objects with real-time position confirmation\u003c\/li\u003e\n\u003cli\u003eProsthetic Hand Development utilizing the integrated feedback mechanism to provide sensory feedback to amputees through neural interfaces\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eHow to Use\u003c\/h2\u003e\n\u003cp\u003eBegin by connecting the Pololu 3551 Micro Gripper to your control system using the three-wire PWM interface: power supply positive, ground, and PWM signal input. Supply 4.8V to 6V DC power to the servo connector, ensuring adequate current capacity of at least 1 ampere for peak grip force operations. Configure your microcontroller PWM output to generate standard servo control signals between 1000 and 2000 microseconds pulse width, where 1500 microseconds represents the neutral position and values below and above this range control jaw opening and closing respectively.\u003c\/p\u003e\n\n\u003cp\u003eFor closed-loop feedback control, read the analog feedback pin voltage which varies proportionally with jaw position, allowing you to implement position verification routines that confirm successful object grasping before proceeding with manipulation tasks. When operating in high-precision applications, implement software filtering on the feedback signal to eliminate noise from PWM switching, and use PID control loops to achieve smooth acceleration and deceleration profiles that prevent shock loads on the gripper mechanism. Always calibrate the feedback sensor at startup by commanding the gripper to full open and full closed positions to establish accurate position mapping for your specific application.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is the difference between the Pololu 3551 and other micro grippers without position feedback?\u003c\/summary\u003e\n\u003cp\u003eThe Pololu 3551 integrates a potentiometric position sensor directly into the servo mechanism, enabling closed-loop feedback control without requiring external sensors. This allows your microcontroller to verify grip success, measure object thickness, and implement adaptive grasping strategies. Non-feedback grippers operate open-loop, meaning they cannot confirm whether an object was successfully grasped or measure grip force, making them unsuitable for applications requiring grip verification or variable object handling.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan the Pololu 3551 be controlled by Arduino or Raspberry Pi?\u003c\/summary\u003e\n\u003cp\u003eYes, the Pololu 3551 is fully compatible with Arduino, Raspberry Pi, and any microcontroller capable of generating PWM signals. Connect the PWM signal pin to any PWM-capable GPIO pin on your microcontroller, supply 4.8-6V power, and use standard servo control libraries. The analog feedback pin can be connected to an ADC input for position monitoring. We recommend using the Servo library for Arduino or RPi.GPIO with PWM for Raspberry Pi implementations.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is the maximum grip force and how is it measured?\u003c\/summary\u003e\n\u003cp\u003eThe Pololu 3551 delivers a maximum grip force of 2.5 kilograms when fully closed with full servo torque applied. This force is measured as the compressive force between the gripper jaws when grasping a cylindrical test object. The actual grip force on your specific object depends on object geometry, jaw contact surface friction, and servo supply voltage. Higher supply voltages within the 4.8-6V range produce slightly increased grip force due to increased servo motor torque.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow accurate is the position feedback and can it measure object thickness?\u003c\/summary\u003e\n\u003cp\u003eThe integrated potentiometric feedback provides 0.1 millimeter positional accuracy across the full 60-degree jaw opening range. By reading the feedback voltage and mapping it to jaw position using calibration values, you can accurately measure object thickness placed between the gripper jaws. This enables applications like automated object sorting by size, quality verification, and adaptive grasping where grip force is adjusted based on detected object dimensions.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhen will I receive my order?\u003c\/summary\u003e\n\u003cp\u003eOrders are dispatched within 1-5 business days from our Bengaluru warehouse. Delivery takes 7-8 days to most locations across India.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is your return and warranty policy?\u003c\/summary\u003e\n\u003cp\u003eWe offer a 7-day return policy on manufacturing defects only. Contact support within 7 days of receipt for free replacement or full refund. Not applicable for user damage or misuse.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eAre bulk discounts available?\u003c\/summary\u003e\n\u003cp\u003eYes, wholesale pricing for orders of 10 or more units. Contact our sales team via WhatsApp or email for a customized bulk quote.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003ch2\u003eWhy Buy from The Engineer Store\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eGenuine Products: Sourced directly from authorized distributors with authentication\u003c\/li\u003e\n\u003cli\u003eExpert Team: Our technical team validates every product before listing\u003c\/li\u003e\n\u003cli\u003eFast Shipping: Dispatched within 1-5 days from our Bengaluru warehouse\u003c\/li\u003e\n\u003cli\u003ePan-India Delivery: 7-8 days to Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata\u003c\/li\u003e\n\u003cli\u003ePayment Options: COD, UPI, credit\/debit cards, net banking, EMI available\u003c\/li\u003e\n\u003cli\u003eTechnical Support: 24\/7 expert guidance via email and WhatsApp\u003c\/li\u003e\n\u003cli\u003eReturns: 7-day return policy on manufacturing defects only\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eBuy Pololu 3551 Micro Gripper Kit with Position Feedback Servo Online in India\u003c\/h2\u003e\n\u003cp\u003ePurchase the \u003cstrong\u003ePololu 3551 Micro Gripper Kit with Position Feedback Servo\u003c\/strong\u003e online at \u003ca href=\"https:\/\/theengineerstore.in\"\u003eThe Engineer Store\u003c\/a\u003e, India's trusted source for genuine electronics. We deliver across Bengaluru, Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata, Ahmedabad, Jaipur, and Surat. Get the best price on \u003cstrong\u003ePololu 3551 Micro Gripper Kit with Position Feedback Servo\u003c\/strong\u003e with fast shipping and expert support.\u003c\/p\u003e\n\u003cp\u003eOur team in Bengaluru is available 24\/7 to support your journey from product selection to project completion.\u003c\/p\u003e","brand":"My Store","offers":[{"title":"Default Title","offer_id":43853764853923,"sku":"TES-EV02654","price":2162.4,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/4479\/7091\/products\/3551-228x228.jpg?v=1704191919","url":"https:\/\/www.theengineerstore.in\/zh-hans\/products\/pololu-3551-micro-gripper-kit-with-position-feedback-servo","provider":"The Engineer Store","version":"1.0","type":"link"}