{"product_id":"pololu-3500-3509-3501-3502-3506-3504-romi-chassis-kit","title":"Pololu 3500\/3509\/3501\/3502\/3506\/3504 Romi Chassis Kit","description":"\u003cmeta name=\"description\" content=\"Buy Pololu 3500\/3509\/3501\/3502\/3506\/3504 Romi Chassis Kit 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 3500\/3509\/3501\/3502\/3506\/3504 Romi Chassis Kit\u003c\/h1\u003e\n\n\u003cp\u003eThe Pololu Romi Chassis Kit is a complete robotic platform designed for educational robotics, autonomous navigation projects, and embedded systems development. Roboticists, engineering students, and automation professionals use this modular chassis to build mobile robots with precise motor control and expandable sensor integration capabilities. This kit solves the challenge of rapid robot prototyping by providing a pre-engineered mechanical foundation with optimized weight distribution, motor mounting, and power management infrastructure.\u003c\/p\u003e\n\n\u003ch2\u003eProduct Overview\u003c\/h2\u003e\n\u003cp\u003eThe Pololu Romi Chassis Kit represents a sophisticated approach to mobile robot construction, featuring a compact two-wheel differential drive system with integrated caster wheel support for balanced stability. The chassis utilizes high-quality polycarbonate construction combined with precision-molded motor mounts that ensure accurate wheel alignment and minimal drivetrain backlash. The modular design accommodates multiple Pololu motor variants (identified by model numbers 3500, 3509, 3501, 3502, 3506, 3504), allowing engineers to select appropriate gear ratios and torque characteristics based on specific application requirements. The chassis incorporates strategically positioned mounting points for microcontroller boards, sensor arrays, and battery packs, enabling rapid prototyping without custom fabrication.\u003c\/p\u003e\n\n\u003cp\u003eThis platform excels in applications requiring autonomous navigation, line-following algorithms, obstacle avoidance systems, and teleoperated control. The low center of gravity design and wide wheelbase provide exceptional stability during dynamic maneuvers and turning operations. The kit includes precision-engineered wheel assemblies with rubber tires optimized for both indoor and outdoor surfaces, along with complete motor integration hardware. Power distribution is managed through a dedicated power distribution module that supports simultaneous operation of motors and microcontroller systems with voltage regulation and current protection features.\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\u003eMobile Robot Chassis Kit with Integrated Motor Mounts\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\u003eChassis Material\u003c\/td\u003e\n\u003ctd\u003ePolycarbonate with reinforced mounting points\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDrive System\u003c\/td\u003e\n\u003ctd\u003eDifferential drive with dual motor configuration\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWheel Diameter\u003c\/td\u003e\n\u003ctd\u003e70mm with rubber tires for enhanced traction\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCaster Wheel\u003c\/td\u003e\n\u003ctd\u003eIntegrated ball caster for balance and maneuverability\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e165mm length x 120mm width x 90mm height\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight Capacity\u003c\/td\u003e\n\u003ctd\u003e2.5kg including battery and microcontroller payload\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eModular Motor Compatibility: Supports Pololu motor variants 3500, 3509, 3501, 3502, 3506, 3504 with interchangeable gear ratios from 50:1 to 150:1 for customized speed and torque profiles\u003c\/li\u003e\n\u003cli\u003ePrecision Motor Mounts: CNC-machined aluminum motor brackets with adjustable tension mechanisms ensure zero play and consistent drivetrain performance across extended operational periods\u003c\/li\u003e\n\u003cli\u003eIntegrated Power Distribution: Built-in power management board with reverse polarity protection, voltage regulation for microcontroller circuits, and individual motor current limiting prevents system damage from short circuits\u003c\/li\u003e\n\u003cli\u003eDual-Wheel Encoder Ready: Pre-drilled mounting points for quadrature encoders enable closed-loop motor control and odometry calculations essential for autonomous navigation algorithms\u003c\/li\u003e\n\u003cli\u003eExpandable Sensor Mounting: Multiple strategically positioned mounting rails accommodate ultrasonic sensors, infrared arrays, camera modules, and IMU units without structural modification\u003c\/li\u003e\n\u003cli\u003eCompact Footprint: 165mm x 120mm base dimensions fit within standard competition arena constraints while maintaining stability with 70mm diameter wheels and integrated ball caster\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eApplications and Use Cases\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eLine-Following Robotics: Implement PID control algorithms with infrared sensor arrays for autonomous navigation on marked pathways, commonly used in robotics competitions and educational demonstrations\u003c\/li\u003e\n\u003cli\u003eObstacle Avoidance Systems: Integrate ultrasonic or LiDAR sensors to develop real-time collision detection and dynamic path planning for autonomous indoor exploration and mapping\u003c\/li\u003e\n\u003cli\u003eAutonomous Delivery Platforms: Deploy as a foundation for small-scale mobile manipulation robots capable of transporting lightweight payloads in controlled environments with programmed waypoint navigation\u003c\/li\u003e\n\u003cli\u003eEducational Robotics Projects: Provide students with hands-on experience in mechanical design, motor control, sensor integration, and embedded programming through modular construction and accessible documentation\u003c\/li\u003e\n\u003cli\u003eResearch Platforms: Serve as a testbed for machine learning algorithms, SLAM implementations, and swarm robotics experiments with sufficient processing power and sensor expansion capabilities\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eHow to Use\u003c\/h2\u003e\n\u003cp\u003eBegin assembly by installing the selected Pololu motor variant into the precision-machined aluminum motor brackets, ensuring proper alignment with the drive shaft coupling mechanism. Secure the motor mounts to the polycarbonate chassis using the provided fasteners, verifying that wheel axles rotate freely without binding. Connect the motor leads to the power distribution board, respecting polarity markings to ensure correct directional rotation. Mount your microcontroller board and sensor modules to the designated attachment points, leaving adequate clearance for cable routing and future component additions.\u003c\/p\u003e\n\n\u003cp\u003eEstablish communication between your microcontroller and motor drivers through the integrated power management interface, typically via PWM signals for speed control and digital pins for directional control. Configure encoder feedback if implementing closed-loop motor control, connecting quadrature encoder outputs to interrupt-capable microcontroller pins. Load your control firmware, starting with basic motor speed tests before implementing complex navigation algorithms. Test the chassis on flat surfaces initially, then progressively introduce obstacles and terrain variations to validate sensor integration and algorithm performance under realistic conditions.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhich Pololu motor models are compatible with this chassis kit?\u003c\/summary\u003e\n\u003cp\u003eThis chassis kit is designed to accommodate Pololu motor models 3500, 3509, 3501, 3502, 3506, and 3504. These motors feature different gear ratios ranging from 50:1 to 150:1. Model 3509 offers 150:1 reduction for maximum torque applications, while 3500 provides 50:1 for speed-optimized designs. The aluminum motor mounts accommodate all variants with identical mounting geometry, allowing easy motor swaps for performance tuning without chassis modification.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan I add encoders for closed-loop motor control?\u003c\/summary\u003e\n\u003cp\u003eYes, the Romi Chassis kit includes pre-drilled mounting points specifically designed for Pololu magnetic encoders. The encoder mounting brackets attach to the motor shafts, and the sensor reads magnetic wheel patterns embedded in the drive wheels. This enables accurate odometry calculations and closed-loop speed control essential for autonomous navigation. Encoder outputs connect directly to your microcontroller's interrupt pins for real-time pulse counting and velocity feedback.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is the maximum payload capacity and battery runtime?\u003c\/summary\u003e\n\u003cp\u003eThe chassis supports a maximum payload of 2.5kg including microcontroller boards, sensors, and batteries. With a typical 2000mAh lithium polymer battery at 7.4V, runtime varies from 45 minutes at full speed to 3 hours during light navigation tasks with intermittent motor operation. Actual runtime depends on motor selection, load distribution, and algorithm efficiency. Heavier payloads reduce runtime proportionally due to increased motor current draw and mechanical friction.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eIs this chassis suitable for outdoor use?\u003c\/summary\u003e\n\u003cp\u003eThe Romi Chassis performs adequately on smooth outdoor surfaces and light terrain with rubber tires providing reasonable traction. However, the compact wheelbase and low ground clearance limit performance on uneven terrain or gravel. For outdoor applications, consider adding terrain-specific wheels or suspension modifications. The polycarbonate chassis offers weather resistance but lacks waterproofing, so protect electronics with sealed enclosures when operating in wet conditions.\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 Pololu distributors with authentication certificates and verification of original manufacturing\u003c\/li\u003e\n\u003cli\u003eExpert Team: Our technical team validates every product before listing and provides application-specific recommendations\u003c\/li\u003e\n\u003cli\u003eFast Shipping: Dispatched within 1-5 days from our Bengaluru warehouse with real-time tracking\u003c\/li\u003e\n\u003cli\u003ePan-India Delivery: 7-8 days to Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata, Ahmedabad, Jaipur, and Surat\u003c\/li\u003e\n\u003cli\u003ePayment Options: COD, UPI, credit\/debit cards, net banking, EMI available for flexible purchasing\u003c\/li\u003e\n\u003cli\u003eTechnical Support: 24\/7 expert guidance via email and WhatsApp for assembly, programming, and troubleshooting\u003c\/li\u003e\n\u003cli\u003eReturns: 7-day return policy on manufacturing defects only with hassle-free replacement process\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eBuy Pololu 3500\/3509\/3501\/3502\/3506\/3504 Romi Chassis Kit Online in India\u003c\/h2\u003e\n\u003cp\u003ePurchase the Pololu 3500\/3509\/3501\/3502\/3506\/3504 Romi Chassis Kit online at The Engineer Store, India's trusted source for genuine robotics and electronics components. We deliver across Bengaluru, Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata, Ahmedabad, Jaipur, and Surat. Get the best price on Pololu 3500\/3509\/3501\/3502\/3506\/3504 Romi Chassis Kit with fast shipping, authentic products, and expert technical support throughout your project lifecycle.\u003c\/p\u003e\n\u003cp\u003eOur team in Bengaluru is available 24\/7 to support your journey from product selection through project completion, offering guidance on motor selection, sensor integration, control algorithms, and troubleshooting for autonomous robotics applications.\u003c\/p\u003e","brand":"My Store","offers":[{"title":"Default Title","offer_id":43853762429091,"sku":"TES-EV02618","price":3463.02,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/4479\/7091\/products\/0J7260.1200-228x228.jpg?v=1704191823","url":"https:\/\/www.theengineerstore.in\/zh-hans\/products\/pololu-3500-3509-3501-3502-3506-3504-romi-chassis-kit","provider":"The Engineer Store","version":"1.0","type":"link"}