https://goodchildengineering.com/blog/Goodchild Engineering designs robotics and drone hardware that's easy to use and versatile, built for research, education and makers.https://goodchildengineering.com/blog/drone-powertrain-design/https://goodchildengineering.com/blog/drone-powertrain-design/A walk through sizing the propeller, motor KV, battery and cell count for a multirotor, the physics behind each choice and the constraints that end up deciding the design, with live calculator examples.Sat, 07 Nov 2026 00:00:00 GMThttps://goodchildengineering.com/blog/flight-controller-vs-companion-computer/https://goodchildengineering.com/blog/flight-controller-vs-companion-computer/Why most capable drones carry two computers, what each one is responsible for, and how they talk to each other over MAVLink.Sun, 25 Oct 2026 00:00:00 GMT