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Product description: CAN Expansion HAT - 2-channel isolated CAN shield for Raspberry Pi - MCP2515 + SN65HVD230 - Waveshare 17912
CAN Expansion HAT is a Waveshare- made CAN bus expansion HAT for Raspberry Pi . It offers dual-channel CAN 2.0 communication with MCP2515 and SI65HVD230 chips, ensuring stable and secure data transmission. Built-in digital isolator and power supply isolation protect against interference and surges. The module is equipped with TVS SM24CANB, 3.3V/5V voltage support, 120Ω switchable resistor and SPI interface. Standard 40-pin GPIO connector guarantees full compatibility with Raspberry Pi Zero / Zero W / Zero WH /2B/3B/ 3B+ / 4B / 5 . It is ideal for automotive and industrial applications.
Product compatible with Raspberry Pi and Arduino !
The manufacturer provides a user guide that contains, among other things, sample program codes and instructions for connecting the overlay.
CAN Expansion HAT - 2-channel isolated CAN shield for Raspberry Pi - MCP2515 + SN65HVD230 - Waveshare 17912.
The shield has a 40-pin GPIO connector.
Key Features of the CAN Expansion HAT
- Dual Channel CAN : CAN2.0 communication with MCP2515 and SI65HVD230
- Power and signal isolation : ensures stability and protection against interference
- ESD Protection : TVS SM24CANB protects against surges and electrostatic charges
- 3.3V/5V Support : Configurable via Jumper
- 120 Ω Terminating Resistor : Switchable for Optimized Transmission
- Raspberry Pi Compatibility : Standard 40-pin GPIO connector
Arrangement of elements on the overlay
- MCP2515 Controller
- Transceiver SI65HVD230
- SI8642ED Digital Isolator
- Power supply unit RT9193-33
- B0505LS-1W Power Isolation Module
- TVS diode SM24CANB
- Standard Raspberry Pi 40-pin GPIO header
- CAN bus screw terminal
- MCU control pins for use with motherboards such as Arduino
- 120 Ohm Terminating Resistor Switch
- 3.3V/5V Logic Level Switch
- Power indicator
Components on the CAN Expansion HAT board.
The shield is compatible with many Raspberry Pi models.
Connection and compatibility with Raspberry Pi
The module supports Raspberry Pi Zero, 2B, 3B, 4B and 5 via a standard 40-pin GPIO connector . SPI must be enabled in the system configuration. It is recommended to use spacers for stable mounting and short circuit protection. Changes to the config.txt file are required to configure the module to work with CAN0 and CAN1.
CAN Expansion HAT Technical Specification
- Type: CAN expansion board
- Built-in chip: MCP2515 and SI65HVD230
- Supply voltage: 5V
- Logic voltage: 3.3V/5V
- Interface: SPI
- Dimensions: 65 x 56.5 mm
Kit Contents
- 1x CAN Expansion HAT - 2-channel isolated CAN shield for Raspberry Pi - MCP2515 + SI65HVD230 - Waveshare 17912
- 1x Header 2x20pin female
- 1x Set of screws and spacers
The sale is for the shield only - the Raspberry Pi must be purchased separately. 
