{"product_id":"waveshare-rs485-can-expansion-board-for-jetson-nano-digital-isolation-built-in-protection-circuit","title":"Waveshare RS485 CAN Expansion Board for Jetson Nano Digital Isolation Built-In Protection Circuit","description":"\u003cmeta name=\"description\" content=\"Buy Waveshare RS485 CAN Expansion Board for Jetson Nano Digital Isolation Built-In Protection Circuit 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\u003eWaveshare RS485 CAN Expansion Board for Jetson Nano Digital Isolation Built-In Protection Circuit\u003c\/h1\u003e\n\n\u003cp\u003eThe Waveshare RS485 CAN Expansion Board is a professional-grade communication module designed specifically for Jetson Nano edge computing platforms, enabling simultaneous dual-protocol industrial communication through RS485 and CAN bus interfaces. This expansion board is widely used by embedded systems engineers, IoT developers, and industrial automation professionals who require robust multi-protocol connectivity for real-time data acquisition and device control in harsh industrial environments. It solves the critical challenge of integrating legacy industrial equipment with modern AI-enabled edge computing by providing galvanic isolation and comprehensive protection circuits that safeguard sensitive Jetson Nano GPIO pins from voltage spikes, ground loops, and electromagnetic interference common in factory automation and remote monitoring applications.\u003c\/p\u003e\n\n\u003ch2\u003eProduct Overview\u003c\/h2\u003e\n\n\u003cp\u003eThe Waveshare RS485 CAN Expansion Board implements dual isolated communication channels through optocoupler-based digital isolation technology, which completely decouples the Jetson Nano's 3.3V logic levels from the industrial RS485 and CAN bus voltage domains. The board features integrated SN65HVD230 CAN transceiver and SP3485 RS485 transceiver chips, both operating at industrial temperature ranges and supporting standard baud rates up to 1 Mbps for CAN and 115.2 kbps for RS485. The digital isolation barrier provides 2500V isolation voltage rating, preventing ground potential differences from damaging the host Jetson Nano while maintaining signal integrity in electrically noisy environments such as motor control systems, power distribution networks, and multi-node industrial sensor networks.\u003c\/p\u003e\n\n\u003cp\u003eThis expansion board includes comprehensive protection circuits featuring TVS diodes, current-limiting resistors, and ferrite beads that protect against transient overvoltage events, ESD discharge, and common-mode noise typical in industrial installations. The board integrates a 120-ohm termination resistor for CAN bus matching and supports standard industrial connectors (DB9 or screw terminals depending on variant) for field-proven reliability. Its compact form factor allows direct mounting on Jetson Nano's 40-pin GPIO header without requiring external power supplies, as it derives all operating power from the host platform while maintaining low quiescent current consumption of approximately 50mA per channel.\u003c\/p\u003e\n\n\u003ch2\u003eKey Specifications\u003c\/h2\u003e\n\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\u003eRS485 CAN Dual Protocol Expansion Board\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eWaveshare 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\u003eIsolation Voltage Rating\u003c\/td\u003e\n\u003ctd\u003e2500V DC galvanic isolation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCAN Bus Speed\u003c\/td\u003e\n\u003ctd\u003eUp to 1 Mbps with SN65HVD230 transceiver\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRS485 Speed\u003c\/td\u003e\n\u003ctd\u003eUp to 115.2 kbps with SP3485 transceiver\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e-40 to 85 degrees Celsius industrial grade\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Supply\u003c\/td\u003e\n\u003ctd\u003e3.3V from Jetson Nano GPIO header\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eQuiescent Current\u003c\/td\u003e\n\u003ctd\u003eApproximately 50mA per channel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCAN Termination\u003c\/td\u003e\n\u003ctd\u003e120-ohm integrated resistor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInterface Connectors\u003c\/td\u003e\n\u003ctd\u003eDB9 or screw terminal variants available\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003eDual isolated communication channels with 2500V galvanic isolation protecting Jetson Nano from industrial voltage transients and ground loops\u003c\/li\u003e\n\u003cli\u003eIntegrated SN65HVD230 CAN transceiver supporting 1 Mbps high-speed CAN communication for real-time industrial control applications\u003c\/li\u003e\n\u003cli\u003eSP3485 RS485 transceiver with 115.2 kbps support enabling legacy equipment integration and long-distance serial communication up to 1200 meters\u003c\/li\u003e\n\u003cli\u003eComprehensive protection circuit with TVS diodes, ferrite beads, and current-limiting resistors providing ESD immunity and transient overvoltage suppression\u003c\/li\u003e\n\u003cli\u003eDirect GPIO header mounting on Jetson Nano with no external power supply required, simplifying deployment in space-constrained edge computing installations\u003c\/li\u003e\n\u003cli\u003eIndustrial temperature rating from -40 to 85 degrees Celsius ensuring reliable operation in temperature-extreme environments\u003c\/li\u003e\n\u003cli\u003eIntegrated 120-ohm CAN termination resistor eliminating the need for external matching components\u003c\/li\u003e\n\u003cli\u003eLow quiescent current consumption maintaining optimal power efficiency on battery-powered Jetson Nano edge devices\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eApplications and Use Cases\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003eIndustrial IoT sensor networks where Jetson Nano collects data from multiple RS485 temperature, pressure, and humidity sensors distributed across manufacturing floors with distances exceeding 100 meters\u003c\/li\u003e\n\u003cli\u003eAutonomous vehicle and robotics projects requiring simultaneous CAN bus communication with motor controllers and sensor fusion modules while maintaining electrical isolation from high-current power distribution systems\u003c\/li\u003e\n\u003cli\u003eSmart building automation systems where Jetson Nano acts as an edge AI gateway integrating legacy Building Management System devices via RS485 with modern CAN-based HVAC and lighting control networks\u003c\/li\u003e\n\u003cli\u003ePredictive maintenance platforms analyzing vibration and temperature data from industrial machinery through dual-protocol acquisition, enabling real-time anomaly detection and equipment health monitoring\u003c\/li\u003e\n\u003cli\u003eAgricultural IoT applications deploying Jetson Nano in field monitoring stations with RS485 soil moisture sensors and CAN-based irrigation valve controllers operating in electrically noisy environments near high-voltage farm equipment\u003c\/li\u003e\n\u003cli\u003ePower distribution and renewable energy monitoring where the board interfaces Jetson Nano with Modbus RTU devices via RS485 and solar inverter CAN networks for grid-tied system optimization\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eHow to Use\u003c\/h2\u003e\n\n\u003cp\u003eInstallation begins by carefully aligning the 40-pin expansion board connector with the Jetson Nano's GPIO header, ensuring proper orientation with pin 1 alignment markers visible. The board draws power directly from the GPIO header's 3.3V and GND pins, requiring no additional power connections. Once mechanically secured, connect your RS485 devices to the designated terminal block or DB9 connector and CAN devices to the CAN connector, observing proper polarity and termination requirements. For RS485 networks exceeding 100 meters, ensure the 120-ohm termination resistor is enabled on both network ends by checking the solder jumper configuration on the board.\u003c\/p\u003e\n\n\u003cp\u003eSoftware integration requires loading appropriate Linux kernel modules for CAN and serial communication. For CAN bus operation, enable the SocketCAN interface using standard Linux commands and configure the bitrate matching your industrial devices, typically 250 kbps or 500 kbps. For RS485 communication, configure the serial port at the appropriate baud rate and enable RS485 mode through device tree modifications or userspace serial configuration tools. The Waveshare documentation provides detailed Python and C code examples demonstrating simultaneous dual-protocol communication, allowing developers to implement multi-sensor data fusion and distributed control algorithms leveraging Jetson Nano's GPU acceleration for real-time processing.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eDoes the RS485 CAN board require external power supply or does it draw power from Jetson Nano GPIO header?\u003c\/summary\u003e\n\u003cp\u003eThe board is completely self-powered from the Jetson Nano's 3.3V and GND GPIO pins with typical quiescent current of 50mA per channel. No external power supply is required, simplifying installation in compact edge computing enclosures. However, ensure your Jetson Nano power supply has sufficient headroom beyond the base system requirements when operating both RS485 and CAN channels simultaneously with high-current transceiver loads.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eWhat is the maximum cable length for RS485 and CAN bus connections from this expansion board?\u003c\/summary\u003e\n\u003cp\u003eRS485 communication supports distances up to 1200 meters at lower baud rates due to the differential signaling and twisted-pair cable requirements, though practical industrial installations typically operate at 300-500 meters with proper shielding. CAN bus supports up to 40 meters at 1 Mbps or 5 kilometers at lower speeds like 125 kbps. Always use shielded twisted-pair cables with proper grounding and termination to maximize reliable communication distance in electrically noisy industrial environments.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eCan I use both RS485 and CAN communication simultaneously on the same Jetson Nano board?\u003c\/summary\u003e\n\u003cp\u003eYes, the expansion board provides complete galvanic isolation between both communication channels and the Jetson Nano GPIO interface, allowing simultaneous independent operation of RS485 and CAN protocols. This enables sophisticated multi-protocol industrial applications where you can simultaneously acquire data from legacy Modbus RTU devices via RS485 while communicating with modern CAN-based controllers, all processed by Jetson Nano's GPU for real-time AI inference.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eWhat protection does the digital isolation provide against industrial electrical noise and transients?\u003c\/summary\u003e\n\u003cp\u003eThe 2500V galvanic isolation completely decouples the Jetson Nano's logic circuits from industrial voltage domains, preventing ground loops and common-mode noise from affecting the host platform. The integrated TVS diodes suppress voltage transients exceeding the safe operating range, ferrite beads attenuate high-frequency noise, and current-limiting resistors protect against overcurrent conditions. This comprehensive protection is essential in environments with motor drives, variable frequency drives, and high-power switching equipment that generate significant electromagnetic interference.\u003c\/p\u003e\n\u003c\/details\u003e\n\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\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\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\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 Waveshare RS485 CAN Expansion Board for Jetson Nano Digital Isolation Built-In Protection Circuit Online in India\u003c\/h2\u003e\n\n\u003cp\u003e\u003c\/p\u003e","brand":"My Store","offers":[{"title":"Default Title","offer_id":43847507902627,"sku":"TES-EV00006828","price":2170.88,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/4479\/7091\/products\/rs485-can-for-jetson-nano-1-314x252.jpg?v=1703855700","url":"https:\/\/www.theengineerstore.in\/zh-hans\/products\/waveshare-rs485-can-expansion-board-for-jetson-nano-digital-isolation-built-in-protection-circuit","provider":"The Engineer Store","version":"1.0","type":"link"}