I want to make my own transmitter and receiver for my quad.  Can anybody help?

When i power my apm 2.8 its LED glow for just one sec and then turns off and it does not works

I m making a racer drone. I am using 2300kv motors. Whenever i try to run them they dont run properly. Some motors spin, some donot, some stop automatically, some spin at slow speed, some at correct speed. And also i m using 30A ESC.Anybody can help?

Anybody knows how to use andropilot app?

my telemetry modules are not working properly. i am using 433mhz telemetry module, apm 2.8. many times when i try to connect them mission planer shows "No Heartbeat Packet Recieved" and then they are not connected. many times their connection break…