APM2.5 AND TRADITIONAL HELICOPTER WIRING PROBLEM 

i dont know if it makes a difference or not, but when i built a quad i had an ardupilot. and it was nothing but problems, so i bought a different one, "arducopter" ardupilot would not update to lateset firmware, but the arducopter would. both are APM.

Olá sou do Brasil ví seus vídeos como faço para usar o arducopter em um helicoptero trex 450?

comofaço pra instalar a nova pixhawk 4 lite no meu trex 450?

re calibrate esc with apm high and low throttle settings ?

First slide the stick down!