I was thinking to make a long range quadcopter after doing to some search about frame and i found less power to weight ratio frame hskrc x328. When i start work i have very good experience of building HSKRC 328 Quadcopter with gps compatibility and insane flight time. I am using following hardware in my build

Hardware

1. Matek 405 STD flight controller

2. Mavic Pro’s motors 2008-1400KV 1400kv

2. Mavic Pro’s Low Noise Corban Fiber Propellers
3. Eachine 800 analog VTX
4. Racerstar 35A 4 in 1 ESC (Running Bluejay Firmware)
5. Camera Caddax Ratil Baby
6. Radio Receiver Jumper 2.4G ELRS

7. Radio Transmitter Jumper T-Pro
8. Matek GPS & Compass M8Q-5883
9. 3dr Telemeter module

10. Sony 21700 based Lion 3s Battery

Flight Controller Firmware

There where 3 firmware options current available.

1. Inav
2. betaflight
3. Ardupilot

I was looking for good first option was inav is good firmware but still inav version 5 there is an issue of horizonal drift