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Green rectangular circuit board 65mm by 30mm with gold edge connector and black chips

WaveShare

WaveShare RS485 CAN HAT development board 65mm x 30mm

SKU CH-YRN9-1X3ZR

Adds RS485 and CAN bus to Raspberry Pi boards via MCP2515 and SP3485 transceivers with TVS protection in a 65mm x 30mm HAT

  • CPU TypeOther
  • Adds CAN bus to Raspberry Pi via MCP2515 SPI controller
  • Enables RS485 half-duplex links through SP3485 UART transceiver
  • Onboard TVS diodes suppress surges and ESD events
  • 65mm x 30mm HAT fits Pi 4B, 3B+, 3B, 2B, Zero and Zero W
  • Includes wiringPi and Python examples for rapid development

What it is

The WaveShare RS485 CAN HAT is a new development board that adds industrial RS485 and CAN interfaces to Raspberry Pi models from the 4B down to Zero WH. It measures 65mm x 30mm and runs at 3.3V with a 3.0mm mounting hole.

Who it suits

Makers and engineers who need reliable long-distance serial or CAN links for sensor networks, automation or vehicle diagnostics will find the onboard MCP2515, SN65HVD230 and SP3485 transceivers plus TVS protection ready to use. Builders who need wireless connectivity, high-speed Ethernet or more than two wired protocols should look at other expansion options.

Key specification

The board combines a SPI-connected MCP2515 CAN controller with an SN65HVD230 transceiver and a UART-driven SP3485 RS485 transceiver featuring automatic TX/RX control, all protected by onboard TVS diodes.

Points forts

  • Adds CAN bus to Raspberry Pi via MCP2515 SPI controller
  • Enables RS485 half-duplex links through SP3485 UART transceiver
  • Onboard TVS diodes suppress surges and ESD events
  • 65mm x 30mm HAT fits Pi 4B, 3B+, 3B, 2B, Zero and Zero W
  • Includes wiringPi and Python examples for rapid development

Caractéristiques

CPU TypeOther

Questions sur cet article

Does the 3.3V SP3485 transceiver on the 65mm x 30mm board generate noticeable heat during continuous RS485 traffic?

The SP3485 is a low-power half-duplex transceiver; at 3.3V supply it draws only a few milliamps, so the HAT stays cool even with all-day RS485 communication.

Which Raspberry Pi models must I already own to plug this HAT directly onto the GPIO header?

The 40-pin header matches Raspberry Pi 4B, 3B+, 3B, 2B, B+, A+, Zero, Zero W and Zero WH, so any of those boards will work without an adapter.

Will the MCP2515 CAN controller on this HAT share the SPI bus cleanly with an older SPI display I keep on the same Pi?

The MCP2515 uses the standard SPI interface with its own chip-select line, so it coexists with other SPI peripherals as long as each device has a separate CS pin.

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