Arduino IDE doesn't show Trinket or Trinket Pro

[donerick]

I have Windows 11 on a laptop. Arduino IDE version 1,8,16. I have put the recommended json file in the preferences. but neither of the Trinkets are listed in the boards manager.

[blnkjns]

After adding the json, you need to go to Tools->Board->Board manager to actually install the needed libraries. Use the search field to find the correct library.

[donerick]

My boards manager in the IDE does not find trinket or adafruit. I had even added some drivers to my Windows 11 for adafruit, but that did not help. I am on the verge of putting this Trinket and Pro Trinket in my box for things that don't work. Maybe the json file I used is obsolete? Most examples and documentation I find on the internet seem to be 7 or 8 years old.

[danhalbert]

Did you go to Boards Manager and install the Adafruit AVR Boards board support package?

More help is here: https://learn.adafruit.com/introducing- ... rduino-ide

The original Trinket and Trinket Pro are quite old, and don't work properly with USB3 ports, so that might also be your issue.

[donerick]

The board manager in my ide 1.8.19 can not find the Adafruit AVR boards package. The best it can do is an "Adafruit circuit playground."

[danhalbert]

Make sure the URL is correct:

ksnip_20220210-163612.png (53.04 KiB) Viewed 772 times

Then, in Tools->Board->Board Manager, search for "adafruit avr":

ksnip_20220210-163518.png (54.4 KiB) Viewed 772 times

[donerick]

I have followed the instructions exactly, but my boards manager still can not see the adafruit boards. so, I give up. I will go back to a couple of projects using the Arduino Nano, which actually works. Thanks for your effort.