Just confirming, FastLED works with the atmega32u4 correct? Any downsides?
Yeah, that’s the chip in the Arduino Leonardo, Arduino Micro, Teensy 2.0, and Adafruit has a ATmega32u4 Feather board. Downsides are most of the dev boards are light on features, and it’s slow compared to many boards that are cheaper, unless you buy a cheap clone or build your own. Depending on the project, I’d recommend the Teensy 3.2 which is cheaper and way more powerful, especially if you’re doing anything that uses interrupts (IR, Wi-Fi, BLE, etc).
When in doubt, you can search the FastLED project on GitHub. If there’s a define for it, it’s most likely supported: https://github.com/FastLED/FastLED/search?q=atmega32u4
I was planning on buying a bunch of these to use in my products to sell. The program Basically runs through a bunch of patterns and changes with different durations of presses of a single button. Super simple. I’ve been using pro minis with the 328p for years previously. https://www.ebay.com/itm/292030376026
Well, for some time I was using Aliexpress-Nano-clones. You hardly can beat 14 €/$ for a lot of 10. 