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Green circuit board with 40-pin header, black chips and terminal blocks

LORDWORLD

LORDWORLD RS485 CAN Expansion Board for Jetson Nano

SKU CH-FVWM-G2EHG

Adds isolated CAN and RS-485 interfaces to a Jetson Nano via a 40-pin GPIO header with onboard TVS protection

  • Direct Jetson Nano fit via standard 40PIN GPIO header
  • CAN bus ready with MCP2515 controller and SIT65HVD230DR transceiver
  • RS485 surge protection from onboard TVS, lightningproof and anti-electrostatic
  • Isolated signals through digital isolation chip for stable anti-interference comms
  • Automatic RS485 TX/RX control via UART, no programming needed

Jetson Nano RS485 CAN Expansion

This LORDWORLD board adds isolated CAN and RS485 interfaces to a Jetson Nano through the standard 40PIN GPIO header. It targets developers building industrial IoT gateways, robotics controllers or vehicle diagnostics tools that need reliable serial buses. The onboard isolation chip and TVS protection suit electrically noisy environments where ground loops or transients would damage a bare module.

Upgrading from bare module or USB adapters

A bare Jetson Nano exposes only UART and SPI, so adding CAN or RS485 normally means external dongles or custom PCBs. This board integrates the MCP2515 controller with a SIT65HVD230DR transceiver and an SP3485 for half-duplex RS485, removing cable clutter and driver conflicts. The jump is worth it when deterministic timing, galvanic isolation and surge suppression are required for field deployment.

Direct GPIO install with reserved pins

The 40PIN header aligns with the Jetson Nano for a solderless press fit, and reserved control pins leave room for additional hats. CAN runs over SPI using the MCP2515 while RS485 uses UART with automatic TX/RX switching, so no extra GPIO toggling code is needed. Common issues include forgetting to enable the SPI and UART overlays in the device tree and mismatching RS485 termination on long cable runs.

Highlights

  • Direct Jetson Nano fit via standard 40PIN GPIO header
  • CAN bus ready with MCP2515 controller and SIT65HVD230DR transceiver
  • RS485 surge protection from onboard TVS, lightningproof and anti-electrostatic
  • Isolated signals through digital isolation chip for stable anti-interference comms
  • Automatic RS485 TX/RX control via UART, no programming needed

Specifications

BrandLORDWORLD

Questions about this item

Does the 40-pin GPIO header align directly with the Jetson Nano without an adapter?

The board uses a standard 40-pin GPIO extension header that attaches directly to the Jetson Nano, so no separate adapter is required for the physical connection.

Which pins on the Jetson Nano must be configured for the MCP2515 CAN controller and the SP3485 RS485 transceiver?

The MCP2515 connects through the SPI interface on the 40-pin header, while the SP3485 RS485 transceiver uses the UART interface; both share the same header, so enable SPI and the relevant UART in the Jetson device tree.

Can the onboard TVS and digital isolation chip be replaced if they fail after a surge event?

The TVS suppressor and digital isolation chip are surface-mounted components; they are not socketed, so replacement would require hot-air rework equipment and is not a routine field-service task.

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