Isolated RS485/CAN HAT (B) for Raspberry Pi - 2x RS485 + 1x CAN with protections
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Isolated RS485/CAN HAT (B) for Raspberry Pi - 2x RS485 + 1x CAN with protections
Application:
- Extension of the Raspberry Pi with isolated and stable CAN and RS485 interfaces
- Integration with industrial devices, controllers, counters and sensors
- Creation of custom communication gateways and protocol converters
Key features:
- Compatible with Raspberry Pi - 40 PIN GPIO connector
- 1 CAN channel - MCP2515 chip + CAN transceiver (SPI → CAN)
- 2 RS485 channels - SC16IS752 + SP3485 chip (SPI → RS485)
- Support for communication via SPI interface
- Supports power supply from Raspberry Pi or external 8-28 V DC source
- Integrated power supply isolation - no separate power supply needed for isolated terminal
- Digital isolation - noise immunity, low power consumption
- Protection: TVS, self-correcting fuse, protection diodes
- Built-in 120Ω termination resistor - jumper configurable
- Screw connectors and goldpins - convenient connection
- SPI pins - can be used with other controllers
BOARD DESCRIPTION
- MCP2515
CAN controller - SIT65HVD230DR/SN65HVD23D
CAN transceiver - SP3485
RS485 transceiver - SC16IS752
UART extension - 163M31
Digital isolator - B0505LS-1W
Power supply isolation
- Power supply interface
DC 8~28V, can power HAT and Raspberry Pi - RS485 bus interface
Connected via screw terminals/pin connector - CAN bus interface
Connected via screw terminals/pin connector - Raspberry Pi GPIO connector
- SPI control connector
For connection to motherboards such as STM32/Arduino - CAN termination resistor jumper
Switched to 120Ω by default - RS485 termination resistor jumper
Switched to 120Ω by default - Power supply indicator
Technical specifications:
- Communication interface: SPI
- Expansion interfaces: 2× RS485, 1× CAN
- CAN controller: MCP2515
- CAN transceiver: SIT65HVD230DR / SN65HVD23D
- CAN speed: up to 1 Mbps
- UART chip: SC16IS752
- RS485 transceiver: SP 3485
- RS485 speed: 300 - 921600 bps
- Power supply: from Raspberry Pi or external 8-28 V DC
- Operating voltage: 3.3 V
- Dimensions: 65 × 56.5 mm
Kit contents
- RS485 CAN HAT (B) x1
- Connector 2x20PIN x 1
- Screws x 4
Wiki: https://www.waveshare.com/wiki/RS485_CAN_HAT_(B)
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