S550 Hexacopter Drone Build with Pixhawk 2.4.8 Flight Controller | Complete Walkthrough 

@@karmayogi5531 hi, so are you sure the signal wire on receiver is on sbus out and not subs in? Secondly the signal wire on rc in Port of pixhawk is connected to the bottom pin and middle being power and top being ground so the order of wire is correct? When you hear the alarm sound do you see the error message on mission planner hud screen? If the above steps are correct then it's mostly like the sbus protocol for receiver is not set correctly in radio. Do you see channels active in receiver menu of mission planner?

@@RakishRc yes, whatever you said, I have done all these things correctly. I am able to arm the drone but motors are spinning automatically, i am not able to control the motor speed using transmitter throttle stick. I have calibrated the radio transmitter again and all the channel bars are moving...this means pixhawk is receiving the SBUS signal from transmitter through receiver. I think there is some settings I need to do in mission or in transmitter to take control of the flight controller. Can you give me your whatsapp no. or any email id?

@@karmayogi5531 have you mapped the channels correctly in mixer page of the radio settings? You can contact me at telegram @rakish33

@@RakishRc yes...i think so....ch 1- Ail, ch2-Ele, ch3- thr, ch4- Rud.....

@@karmayogi5531 send you pictures and mission planner screenshot on telegram will get it working for you