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Green rectangular PCB with black connectors and silver components

Seeed Studio

Seeed Studio CANBed ATmega32U4 MCP2515 MCP2551 CAN-BUS Development Board

SKU CH-JM15-XM3VS

Combines an ATmega32U4 Arduino board with MCP2515 and MCP2551 CAN-BUS interfaces, offering 18 I/O pins and up to 1 Mb/s communication

  • TypeSensors
  • ATmega32U4 runs Arduino sketches directly
  • CAN V2.0B at 1 Mb/s via MCP2515 and MCP2551
  • 18 I/O pins including digital, analog, UART and I2C
  • Dual CAN interfaces: sub-D9 and terminal block
  • Ready for Arduino IDE with CAN library

CANBed ATmega32U4 development board

The Seeed Studio CANBed combines an ATmega32U4 microcontroller with an MCP2515 CAN controller and MCP2551 transceiver on a single board. It ships with the Arduino Leonardo bootloader and is fully compatible with the Arduino IDE. The board targets engineers, students and hobbyists who need a compact platform for CAN-BUS prototyping, vehicle diagnostics or industrial automation experiments. No external MCU is required to run CAN applications.

18 pins with UART and I2C

The ATmega32U4 provides 18 accessible pins covering digital I/O, analogue inputs, a hardware UART and an I2C interface. CAN V2.0B is supported at up to 1 Mb/s through the MCP2515 SPI controller. Connectivity options include a sub-D9 connector and a terminal block for flexible wiring. The single-chip MCU limits overall processing headroom, so very high message rates or complex real-time tasks may exceed its capacity.

Low-power USB operation

The board draws power directly from the USB connection used for programming and serial monitoring. With no onboard voltage regulators for high-current loads and no active cooling, thermal output remains minimal during typical development work. The MCP2551 transceiver operates within standard CAN voltage levels, and the ATmega32U4 runs at modest clock speeds, keeping noise and power draw negligible in normal bench use.

Highlights

  • ATmega32U4 runs Arduino sketches directly
  • CAN V2.0B at 1 Mb/s via MCP2515 and MCP2551
  • 18 I/O pins including digital, analog, UART and I2C
  • Dual CAN interfaces: sub-D9 and terminal block
  • Ready for Arduino IDE with CAN library

Specifications

TypeSensors

Questions about this item

Will the CANBed work alongside my older Arduino shields that use the standard 18-pin header layout?

Yes, the board exposes 18 pins including digital, analog, UART and I2C so existing shields that match that pinout can be connected directly.

How can I verify the MCP2515 controller is communicating at 1 Mb/s after I upload a sketch?

Open the serial monitor in the Arduino IDE and watch for valid CAN frames; the MCP2515 with MCP2551 transceiver implements CAN V2.0B up to 1 Mb/s so correct traffic confirms operation.

Does the box include both the sub-D9 and terminal block cables, or do I need to buy them separately?

The board provides a sub-D9 connector and a terminal block interface on-board; cables for either connection method are not included and must be sourced separately.

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