oardRevolution board Revolution, Sparky2 and RevoNano boards supports external leds, up to 10 of the WS2811, WS2812 and WS2812B multi-color LEDs can be used. To use more than 10 leds you need to put the strips in parallel instead of series. The WS281x leds do not work on cc3d CC3D/Atom boards. The WS281x leds work only using the servo1 output with RevoNano. | Board | WS281x Led outputs |
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| Revolution | Servo outputs (1 to 6) + FlexiIO (receiver port) pin3 and pin4 | | Sparky2 | Servo outputs (1 to 6) | | RevoNano | Servo output #1 only |
External Led provides visual information about flight modes or warnings during flight/pre-flight checks. 
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