We did LEDs in 20 mins by:
Buying a WS2812 LED strip on Amazon. These can be cut up and soldered together with wires. https://www.amazon.com/s?k=WS2812&crid=FI0UCDOA29CV&sprefix=ws2812%2Caps%2C158&ref=nb_sb_noss_1
Then, using the VRM or PCM, connect VCC and GND to the 5-volt 2-amp rail.
Connect the signal to the signal pin on any port on the PWM rail on the RIO.
Finally, use the AddressableLED class from WPILib. Implement some super simple logic and you’re good to go.
Docs: Addressable LEDs — FIRST Robotics Competition documentation
Example: allwpilib/Robot.java at main · wpilibsuite/allwpilib · GitHub
It’s so easy I don’t see the point in using a CTRE CANdle or REV Blinkin.