Description:
The RS485 CAN HAT will enable your Pi to communicate with other devices stably long-distance via RS485/CAN functions. The functionality of the RS485 CAN HAT involves handling all message reception and transmission on the CAN bus. When sending a message, it is first loaded into the appropriate message buffer and control registers. Sending operations can be initiated by setting the corresponding bits in the control registers via the SPI interface or by using the transmit enable pin. Communication status and errors can be checked by reading the respective registers.
Any messages detected on the CAN bus undergo error checking, and then are matched with user-defined filters to determine whether the message should be moved to one of the two receive buffers.
Specifications:
- Operating Voltage: 3.3V
- CAN Chip: MCP2515
- CAN Transceiver: SN65HVD230
- 485 Transceiver: SP3485
- Dimensions: 65mmx30mm
- Mounting Hole Size: 3.0mm
Features:
- Standard Raspberry Pi 40PIN GPIO extension header, supports Raspberry Pi series boards
- 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 suppress surge voltage and transient spike voltage in the circuit for RS485 transceiving, lightning-proof & anti-electrostatic
- Reserved control pins, allows working with other control boards
- RS485 CAN HAT comes with development resources and manual (examples in wiringPi/python)
Useful Link:
Package Included:
1 x Waveshare RS485 CAN HAT for Raspberry Pi 4B/3B+/3B/2B/B+/A+/Zero/Zero W/WH/Zero 2W