Cytron Motion 2350 Pro COM port not appearing

[dennisma]

Using a Cytron Motion 2350 Pro boards and latest release 4.0.2

I can upload code using the UF2 method (hold bootselect and power on) but I'm not seeing the COM port appear after doing so like I do with the RP2040 versions.

Just curious if this has not been fully implemented yet.

Thanks!!

[Andy2No]

Have you tried unplugging the USB cable and plugging it back in again?

I've been having to do that with a Pi Pico (RP2040), lately, with a project I've been tinkering with (extending TinyBasicPlus a bit). I can't say I understand why, but that makes the port appear again, and I have to do it after each upload.

[earlephilhower]

The Cytron was contributed by a user, but there's nothing special about the board as far as the core or USB goes (since the RP2350 SOC runs everything in SW). It's probably all good, just a config thing.

If blink.ino runs and blinks the LED then the USB port is working, but Windows isn't happy for some reason. Check the Zadig installation instructions on https://github.com/earlephilhower/arduino-pico/blob/master/docs/install.rst#windows-7-driver-notes . Each board will give its own USB VID/PID per the configuration and Windows expects a special driver for each different one (unlike Mac or Linux where the OS goes "oh, you're a CDC serial port? I'll automatically hook up a /dev/ttyxxxx for you").

[dquadros]

Windows 10 will use a default CDC driver if there is no special driver assigned to the VID/PID (but still assign a new COM port if it thinks it is a new device - I am up to COM 70). You can check if the board was detected and what driver (if any) was used by look in the Device Manager.

[earlephilhower]

...COM70...

And to think, I was upset that I have /dev/ttyACM1 and /dev/ttyACM2 on my system. 😆

[dennisma]

The Cytron was contributed by a user, but there's nothing special about the board as far as the core or USB goes (since the RP2350 SOC runs everything in SW). It's probably all good, just a config thing.

If blink.ino runs and blinks the LED then the USB port is working, but Windows isn't happy for some reason. Check the Zadig installation instructions on https://github.com/earlephilhower/arduino-pico/blob/master/docs/install.rst#windows-7-driver-notes . Each board will give its own USB VID/PID per the configuration and Windows expects a special driver for each different one (unlike Mac or Linux where the OS goes "oh, you're a CDC serial port? I'll automatically hook up a /dev/ttyxxxx for you").

It appears to be a hardware issue with the board. I got another Cytron Motion 2350 board in and it works perfectly fine. I'm going to see if I can figure this other one out but I'm happy at least one of them is working.

Thanks again!