Waveshare RS485 CAN HAT for Raspberry Pi
The RS485 CAN HAT will enable your Pi to communicate with other devices (e.g. the Huvud Controller Board) via RS485/CAN over long distances.
Features
- Raspberry Pi connectivity, compatible with Raspberry Pi Zero/Zero W/Zero WH/2B/3B/3B+/4B
- CAN function, onboard CAN controller MCP2515 via SPI interface, onboard transceiver SN65HVD230
- RS485 function, controlled via UART, half-duplex communication, supports automatic TX/RX control without programming, onboard transceiver SP3485
- Onboard TVS (Transient Voltage Suppressor), effectively suppresses surge voltages and transient spike voltages in the circuit for the RS485 transceiver
- Reserved control pins, allows to work with other controller boards
- Comes with development resources and manual (examples in wiringPi/python)
Specifications
- Operating voltage: 3.3V
- CAN controller: MCP2515
- CAN transceiver: SN65HVD230
- 485 transceiver: SP3485
- Dimension: 65mm x 30mm
- Mounting hole size: 3.0mm
Pinout:
| PIN | Raspberry Pi (BCM) | DESCRIPTION |
|---|---|---|
| 3V3 | 3V3 | 3.3V Power |
| GND | GND | Ground |
| SCK | P11 / SCLK | SPI clock input |
| MOSI | P10 / MOSI | SPI data input |
| MISO | P9 / MISO | SPI data output |
| CS | P8 / CE0 | SPI chip selection |
| INT | P25 | Interrupt |
| RXD | P15 / RXD | RS485 UART receive |
| TXD | P14 / TXD | RS485 UART transmit |
| RSE | P4 | RS485 TX/RX control (auto control by default, some soldering is required to enable manual control), high for TX, low for RX |
More Resources in the Waveshare wiki
Package Content
- RS485 CAN HAT
- RPi screws pack (2pcs)
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