CANBed M4 development board based on Microchip SAM E51 Cortex-M4 microcontroller and MCP2542FD CAN transceiver provides a more powerful alternative to the CANBed RP2040 with a Raspberry Pi dual-core Cortex-M0+ microcontroller introduced last year.
The board supports both CAN 2.0 and CAN FD with a 4-pin terminal block or a DB-9 connector, and offers expansion capabilities though two Grove connectors, and an 18-pin IO header.
CANBed M4 specifications:
- MCU – Microchip ATSAME51G19A Arm Cortex M4 core @ up to 120 MHz with 512KB flash, 192KB RAM
- CAN
- Microchip MCP2542FD CAN transceiver with support for CAN 2.0 and CAN FD up to 2+ Mbps
- Input interface – DB-9 connector or terminal block
- 120 Ohm terminal resistor
- USB – 1x Micro USB port for programming
- Expansion
- I2C Grove connector
- UART Grove connector
- SPI header
- 18-pin I/O header with up to 12x GPIOs, UART, I2C, 4x analog inputs, 5V, and GND
- Misc – Reset button, CAN Tx/Tx LEDs
- Input voltage – 7~28V
- Dimensions – 56 x 41 mm
That’s exactly the same layout as the CANBed RP2040 board except CAN FD is supported. The board ships with a DB-9 connector, a 4-pin terminal block, two Grove connectors, a 9×2 2.54mm pitch header, and a 3×3 2.54mm header for SPI, which you can solder to the board if needed.
The board can be programmed with the Arduino IDE and instructions can be found on Longan Labs’ wiki. Longan Labs are made a couple of those over the years as shown in the table below with some typos and inaccuracies (e.g. ATSAM51G19A is clocked at 120 MHz).
While the CANBed M4 appears in the “new arrivals” feed on Seeed Studio, it looks like it was designed in 2020. Some companies appear to be desperate and show older products as “new arrivals”, and in recent days, I had started to write articles about some “new” products only to find out I had already written about them one or two years ago, and cancel the post.
CANBed M4 can be purchased for $19.90 on Seeed Studio or directly on the Longan Labs website.
Jean-Luc started CNX Software in 2010 as a part-time endeavor, before quitting his job as a software engineering manager, and starting to write daily news, and reviews full time later in 2011.
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