skpang

Yes, you can use can3 in Classic CAN mode.

Sparkfun have the T4.1 in stock now. Just placed an order with them.

I wonder if there is a way to tell the new Teensy is manufactured by Sparkfun ? It would be useful to know.

I've attempted to port CANopenNode to Teensy but failed. Couldn't get the directory structure and search path to compile on the Arduino IDE. I did managed to get CANopenNode STM32 example to compile and working. Tested with CANopen Magic.

News made it on to Electronics Weekly: https://www.electronicsweekly.com/news/products/bus-systems-sbcs/arduino-compatible-teesny-cortex-m7-dev-boards-now-made-by-sparkfun-2025-03

Sparkfun offer cheaper shipping so that is good news. I wish they will offer an option of no printed card. The Teensy I buy will into a board that I sell and I don't need the printed card. I've got thousands of printed cards that go into the...

Best to use FlexCAN_T4.h CAN1 and CAN2 are the same. CAN3 has FD capability.

Yes, you can use a level shifter but your Teensy 4.1 might have already been damaged if you applied 5v to its input. Try to use CAN1 or CAN2 instead of CAN3.

The MCP2551 is a 5v device with a 5v on the logic pin. The Teensy 4.1 is not tolerant on its input, you will damage the Teensy if it receives 5v. Try and use the MCP2562 instead. It has a separate VIO pin for the logic.

I can get 5Mb/s to work with these settings: CANFD_timings_t config; config.clock = CLK_60MHz; config.baudrate = 500000; config.baudrateFD = 5000000; config.propdelay = 188; config.bus_length = 1; config.sample = 75; You might...