Basics

This page goes over potential methods for controlling cheap (80-200USD) quadcopter camera "drones" with a PC rather than the included remote and/or mobile app
Many work via an unsecured 5ghz wifi connection, and thus are quite "hackable"
Despite not being as user maintainable / capable as a custom built Quadcopter , they are heavily accessable, and quite cost effective, and thus may be of use

Internal Links

An article by "Medium" Titled "Hacking a Toy Drone to Put Artificial Intelligence on It, Part 1: The Hack!"
A Video by the Youtube Channel "Adam Savage's Tested Titled "Hacking a $20 Toy Helicopter into an Autonomous Drone" (Used a 20 USD "Micro Helicopter (no onboard camera 1 counterotor) ", an arduino mega connected to the gutted ir remote, and a program using the arduino mega as a Logic Analyser (via an open source project (which project) ), then custom code for the hid devices they added in