HELP ! Apm 2.5.2 external 3w LEDs/ Buzzer

Hi everybody,

I just bought a 3W 4LEDs LED Module LED Indicator V1.0 for APM MegaPirate RC From Ebay and I would like to add it to my Apm 2.5.2 board. I do have no idea how to do this . There are no videos on youtube about these LED boards, some of th

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