Using Revolution board, the data output can be set to: - FlexiIO_pin4,
- FlexiIO_pin3
- servo outputs.
NOTE: If FlexiIO_pin3 or FlexiIO_pin4 do not work for you, try using a spare servo output. Led is powered using Gnd and +5V from board. 
Go into UAVOBrowser, HWSettings > WS2811LED_Out and select the output. Click on the red arrow pointing up on a hard drive near the top of the screen  to save the change to the board. Reset or power cycle the board and the LEDs will begin working. | 