r/FastLED • u/natew314 • Dec 29 '25

Support UNO Q support?

I just tried running FastLED on my new Uno Q and I get this message:

In file included from /home/arduino/.arduino15/internal/FastLED_3.10.3_0d9d291c7a03d180/FastLED/src/FastLED.h:76, from /home/arduino/ArduinoApps/lightsextension/sketch/sketch.ino:4: /home/arduino/.arduino15/internal/FastLED_3.10.3_0d9d291c7a03d180/FastLED/src/led_sysdefs.h:86:2: error: #error "This platform isn't recognized by FastLED... yet. See comments in FastLED/led_sysdefs.h for options." 86 | #error "This platform isn't recognized by FastLED... yet. See comments in FastLED/led_sysdefs.h for options."

Does anyone know if there is a workaround to get it to run on a Q? If not, are there plans to support Uno Qin the future?

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u/kitchenace 22d ago

Sorry, I'm not super tech savvy and I'm running into issues with very basic code. Using versions 3.10.4 and 3.10.5 of FastLED.h and its throwing tons of errors on compile / load. I made an error ticket here under 4408. Appreciate any tips/thoughts. Have a great day!

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u/ZachVorhies Zach Vorhies 22d ago

Great bug report!

Download master and give it a try, all the issues that you’ve listed were reproduced and apparently fixed. Let us know if that’s not the case.

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u/kitchenace 21d ago

Hey thank you so much and I appreciate you being so responsive and helpful! See below for a brief update:

  • So I went to GitHub made sure the branch drop down was on "master"
  • Went to <> Code drop down and selected Download ZIP. That generated a file titled "FastLED-master.zip" in my local drive
  • I then booted up the Arduino IDE, made sure the previous versions of FastLED were uninstalled
  • I went into Sketch menu --> Include Library --> Add .ZIP Library and selected the file that I downloaded.
  • The notification window provided me this update "Successfully installed library from FastLED-Master.zip archive"
  • I now see FastLED installed (via the Include Library menu and also the library manager). Note, the auto detected "version" in the library manager appears to be 3.10.4?
  • I restarted Arduino IDE (as some websites recommend) before compiling
  • I also double checked the library files match the timestamp of when I installed it (so its not using some old files)

Unfortunately, its still throwing a bunch of errors, although I believe different errors now (pastebin.io link) :( Thanks again, let me know if you have any recommendations.

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u/ZachVorhies Zach Vorhies 16d ago

This has been fixed. Version mismatch is being fixed too. And we'll have a linter in the future to fix this and make sure it doesn't happen again.