trinket Mo USB issue

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macgman2000
 
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trinket Mo USB issue

Post by macgman2000 »

Hi,

Hoping someone can help. I bought two trinket M0 3.3v modules. I installed the boards as it says on the adafruit website for trinket.
When I plug the trinket into USB it shows up as libusb-win32 device USBtiny. It does not show up under any COM port. When I go into the IDE, I can find the board, but the programmer only has J-link and some ATMEL programmer.

What am I doing wrong? Any help would be appreciated.

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neradoc
 
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Re: trinket Mo USB issue

Post by neradoc »

Hi, try putting the board in bootloader mode by double-clicking the reset button to get the port to show up.
The Arduino IDE should then be able to detect the board and list it in the serial ports.
Don't select a programmer, try uploading a blink program once you have selected the board and the port.

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macgman2000
 
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Re: trinket Mo USB issue

Post by macgman2000 »

When I do double click it refreshes the list in device manager. But no com port pops up. It's happens on my win 10 and win 11 machines.

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neradoc
 
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Re: trinket Mo USB issue

Post by neradoc »

Can you confirm the boards you are using ?
You mention the trinket M0, but it looks like these are 3.3V trinkets ?
Trinket M0: https://www.adafruit.com/product/3500
Trinket: https://www.adafruit.com/product/1500

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macgman2000
 
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Re: trinket Mo USB issue

Post by macgman2000 »

The second short cut you listed is the board I have. It says Trinket 3.3v at the bottom.

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neradoc
 
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Re: trinket Mo USB issue

Post by neradoc »

Ah, on my Windows 10 machine I had to install the Adafruit drivers to get the upload to work, see here: https://learn.adafruit.com/introducing- ... dows-setup

Also, the trinket does not use a port for programming. (See the orange box in the link).
Make sure to select the correct board, not the M0, it's "Adafruit Boards" > "Adafruit Trinket (ATtiny85 @ 8MHz)".
Now you should be able to select the USBTinyISP programmer.
When you are ready to upload, press reset once to put it into bootloader mode, the red LED should pulse. (For a limited amount of time).
Click upload in the Arduino IDE.

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macgman2000
 
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Re: trinket Mo USB issue

Post by macgman2000 »

Thank you very much! It is working now with the blink sketch :)

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