The “N” in CAN stands for network, after all. The trick is to create a device ID for each desired CANSerial interface, which is done in his library using the usual Arduino setup step.

Nuvoton Technology has announced an Arduino-like development board for its own Arm Cortex-M4 based M467 “Ethernet – crypto microcontroller series”, it calls them. The board, ‘NuMaker-UNO-M4’ has the ...

Universal (ish) Arduino grbl opto-coupler interface also works with logic-level pwm In adding an alternative cutter drive motor (‘spindle’) to an existing cnc machine, an electrically isolated pwm to ...

An Arduino can interface with them but the code is a bit tricky and to get a webpage of it starts costing alot. You can get a standalone server here but I have no idea how well they work.

It’s a small PCB with an onboard CAN interface from an ESP32-S3 and a car-friendly power supply circuit, and perhaps most importantly, it has an auto-shutdown feature to prevent battery drain.